Right ascension calculator. Calculate the solar time at Greenwich of rise and set.

Right ascension calculator If you know the coordinates something relative to the Ecliptic but want the position expressed as a Right Ascension and Declination (the Equatorial coordinate system), here is the tool for you. 440000 hrs (declination) delta = -18. This experimental chart uses equatorial right ascension planet positions instead of standard ecliptic longitude positions. Enter the coordiantes to the object, Right ascension in hours and Declination in degrees, both as decimals: Right Ascension: Declination: 2. By looking at the complete source code of this tutorial, you will see all these steps executed in the described order. hours). RA . 077971278 a. Reload form. A star's position is fixed in that system and it will be always at the exact same sidereal time that it culminates (as that's the definition of sidereal time). Input Coordinate System: Help Coordinate Calculator Hide Input Options. RA is used to locate a star on sky, and is measured between a fixed point in the sky (the crossing of the Ecliptic and the Celestial Equator) and the star's meridian. Precession Calculator Right Ascension = Declination = from coordinate year = to year = Precessed Right Ascension = Declination = Notes: Precession depends on the coordinate How To Use The Calculator. 5 days after \( d_0 \). The current Right Ascension is 08h 31m 13s and the Declination is +22° 29’ 35 ” Ephemeris Calculator. 01 RA DEC conversion from hh:mm:ss to degrees, from degrees to dd:mm:ss, from decimal to degrees. 66717. Note: In the model above for this case, this intersection is found 90° from the ascending node. As the Earth rotates, stars appear to rise in the East and set in the West just like the Sun. To obtain Right Ascension/Declination, fill in Azimuth/Altitude and click the [Calculate] button. Is there any approximate way to calculate the right ascension of the Moon? I already got declination but still, need the right ascension to calculate the final position of the moon. Right ascension, = ⁡ (⁡ ⁡), where is in the same quadrant as , To get RA at the right quadrant on computer programs use double argument Arctan function such as ATAN2(y,x) Our task is to be able to predict, from these, the right ascension and declination of the object in the sky at some Calculate the right ascension and declination (referred to \(\text{J2000. MMSS and click "Convert HH. Now this new and exciting second viewpoint--right ascension--finally reveals all of who you really are. The sun's position is irrelevant to when a star will be in its meridian; the Sun's coordinates in the RA/dec grid does change over the year. Add it all together! For DECLINATION Knowledge Check 2: Right Ascension. Also depicted are the star's right ascension and Greenwich hour angle (GHA), the local mean sidereal time (LMST) and Greenwich mean sidereal time (GMST). Due to variable atmospheric conditions and uncertainty inherent in the algorithms used, the actual observed values of sunrise, sunset and solar position may differ from the results presented here. I have a latitude / longitude / time of a location on Earth, I need to calculate the Right Ascension / Declination that's overhead at the time provided. Thanks for all your answers! The program will calculate various parameters for the Moon at the instant You have chosen. Day of Right ascension is written in terms of hours, minutes and seconds. I'm not sure what you mean by "the stellar time at Greenwich at 0h UTC is 22h20min", but I'm assuming that you mean that that is the This equation computes the right ascension of the ascending (R. Now calculate RIGHT ASCENSION angle (and convert to hours, minutes, seconds if desired). Conjunctions where the elongation from sun is greater than 15° are highlighted. Add some hours for time zones. Cambridge, England: Cambridge University Press, pp. Observation epoch . For example, a constellation with a right ascension of 3 hours 4 minutes and 38 seconds is written as 3h 5m 38s. For that part, I used the following, gleaned from said old website: For RIGHT ASCENSION. Northern latitudes are positive, East longitudes are positive: Latitude: Longitude: 3. You can enter this as HH. A full circle in HMS notation is 24 hours, which means 1 hour in HMS notation is equal to 15 degrees. Date to Day. The NASA/IPAC Extragalactic Database (NED) is funded by the National Aeronautics and Space Administration and operated by the This page is concerned with astronomical calculations. Next, we can calculate the RAAN. For Right Ascension, astronomers always use the convention of Hours:Minutes:Seconds. We really don’t need that sort of precision, as primary directions are not the appropriate technique for timing to the day anyway. Credit: NASA Follow @ We can calculate Cartesian coordinates as long as we have right ascension (α), declination (δ), (about 11:59 UTC). Assuming in this example the day of the year is the The proper motion (μ) has a magnitude and a direction, and is often broken down into the components of right ascension (μ RA) and declination (μ Dec) where. The current Right Ascension is 19h 45m 34s and the Declination is -21° 13’ 22 ” Ephemeris Calculator. An equivalent definition—one that is more useful to observational astronomers—is that sidereal time is the right ascension of celestial objects transiting (crossing) the meridian as the Earth rotates. First, we need the average right ascension of the satellite streak: a av = [a 1 + a 2] / 2. 999808000153. Equinox. The units of right ascension are hours, since the celestial equator is divided into 24 equal portions. Usually, right ascension has units of hours, minutes, and seconds. Right ascension 19 h 43 m 30 s: Declination -21° 18' 26" Range (AU) 0. The active star initially has an RA But with a normal watch we have to calculate the GST. You will likely come across different sets of equations for the RA/Dec to Alt/Az conversion. User Date I just want to ask if someone does possess the formula linking the local hour to the right ascension of the ascending node (RAAN). Denoted with the symbol Ω, it is the angle from a specified reference direction, called the origin of longitude, to You can now use step 7 and later ones from the method for the planets to calculate the right ascension and declination or the height and azimuth. Julian Date to Calendar Date. In astronomy, the hour angle or right ascension of a star is measured not in degrees, but in hours, minutes and seconds, "time units". The sidereal time identifies the $\begingroup$ @KeshetE If you were doing this for a telescope on a equatorial mount for instance, you may be mechanically limited by how many hours of Right Ascension you can observe either side of the meridian. To do this, we convert the local Standard/Daylight time to Greenwich Mean Time (GMT), also called the star's right ascension, and obtain the longitude in time units. You will also need to know your location on the Earth, as this can affect the Moon's apparent position due to parallax. Compute the position of The Sun for any date and time between 1 January 1600 and 30 December 2499 and display the results on an Calculate the RA and DEC and Earth – planet distance from the rectangular coordinates; (right ascension) alpha = 15. If Conventions: hour angle increases to the west and Right Ascension increases to the east. LAMBDA - Conversion Utilities. 0}\)) at 2002 July \(15. I will try to explain myself: I know that I want my satellite to be on a sun-synchronous orbit 10h30-22h30 with 10h30 corresponding to my local time of ascending node (LTAN) as my entrance parameter; and I want to know the RAAN because co_aberration: Calculate changes to right ascension and declination due to co_nutate: Calculate changes in right ascension and declination due to co_refract: Calculate correction to altitude due to atmospheric co_refract_forward: Calculate the true altitude of a celestial object from an cosmo_param: Derive full set of cosmological density parameters Position of the Sun [] Contents. We calculate the position of the Moon for 0:00 UTC on 1 January 2004, which is 1460. The Earth’s sky appears to turn Right Ascension: Declination: Ecliptic to Equatorial Coordinates. Each hour is split into 60 minutes and each minute into 60 seconds. You do not actually need to calculate positions This Java Script calculator (by Stephen R. Position Angle (East of North) Hide Output Options. As it measures the rotation of Earth, we can easily associate it with another angle called right ascension. Dec . u. Astronomy Calculator. If one compares the coordinate system of the Celestial Sphere with the Earth's own coordinate system -- the former being a projection into outer space of the earth -- the right ascension is equivalent to the degree of longitude on earth Last month, I had a post that briefly introduced the two primary coordinate systems for recording the position of objects on the celestial sphere: the Altitude-Azimuth (Alt-Az) and Right Ascension-Declination (RA (α)-Dec (δ)) systems. 73s = Video 2: Case 2 Simulation Viewed from the Top of the Earth (George, 2022). This equation computes the right ascension of the ascending (R. Astro-Seek online horoscopes and charts. Calendar Date to Julian Date. The formulas are based on an elliptical orbit Right Ascension. 25 we get that a day is about 9. The total range of right ascension is 24 hrs = 360 deg / 15 deg/hr. The difference of the sidereal day to the mean solar day is ~3:56 minutes (366 RAAN — Right ascension of ascending node scalar value from 0 to 360. Then 02 What is the right ascension? 03 What is the time measure or hour measure? 04 What does the Right Ascension by Degree function do? GC Wizard for 01 How do I calculate line segments? Segment Bearings. Whichever method you use, make sure you make a map with the right scale: RA from 0 to 360, Dec from -90 to 90. [toc] Ascension Difference. By default, each line should contain four numbers signifying the RA and Dec values for pairs of points. Birth Chart, Astrology Online Calculator - Enter your birth data. For hour angle, right ascension (horizontal arcs, degrees) can be used as an alternative. If you have a question about what an entry box is asking for, or Directions: Select a location from the City pulldown menu, OR select "Enter Lat/Long ->" from the pulldown menu, and manually enter the latitude, longitude and time zone information in the appropriate text boxes. It corresponds to terrestrial coordinate Latitude. Right ascension is the celestial equivalent of terrestrial longitude. Right Ascension 06:45:09, Declination -16:42:58 meaning the Right Ascension is 6 hours, 45 minutes, 09 seconds Position of the Sun [] Contents. There, I noted that Alt-Az is quick and easy to use, but is at the same time nearly useless as objects fixed on the celestial sphere do Now that we've established a non-rotating 3D coordinate system, the right ascension of the ascending node is the angle between the X axis Time of periapsis passage: if you know the last time of periapsis, you can calculate where on its orbit the satellite should be right now; Summary. MMSS" to convert to hours Calculate: When you have How To Use The Calculator. Using the library OrbitTools I can input a TLE and get back ECI coordinates. It is analogous to longitude on Earth, but RA is measured in time units and only increases in one direction (what astronomers call east). Right ascension is usually given in hour angles, declination is usually given in sexigesimal degrees (base-60, using minutes and seconds), and distance is usually given in parsecs (pc) or light-years (ly Conjunctions of Planets. For the time at which I want to calculate the longitude, time_hrs = hours + minutes / 60 then using right ascension of Sun, delta_x = time_hrs * 15 + right_ascension_sun - 180; The coordinates of the Moon's ground track at this Right Ascension (RA) Right Ascension is measured in hours (h), minutes (m) and seconds (s) and is similar to longitude on Earth. Angle in the equatorial plane from the x-axis to the location of the ascending node (point at which the satellite crosses the equator from south to north), in degrees. CALCULATE DECLINATION; Finally, also calculate angle of DECLINATION (and convert to degrees, minutes, seconds if desired). So far I've found out that Right Ascension is the same as the sidereal time for the location but I haven't found any information about declination. When combined with the radial velocity the 3D To obtain azimuth/altitude, fill in the Right Ascension/Declination and click the [Calculate] button. These coordinates can be expressed in terms of the moon's right ascension and declination, which describe the moon's position in the sky relative to the celestial equator and the Astronomy Calculator Disclaimer: These calculators are for informational and educational purposes only. Since the Earth rotates to the East, the local clock time is always later to the East. When we do want greater precision we can let a good software program do the calculation for us. Calculate the solar time at Greenwich of rise and set. a av = 291°. Input the Year, Month, and Day, as well as the Right Ascension (Epoch J2000) for the object of interest, then click the Compute button. 2' or The Right Ascension Precession calculator estimates the rate of precession of the right ascension of the ascending node (RAAN) due to Earth oblateness (J2) based on the orbital parameters. Once you have this information, you can use this online tool that incorporates the necessary algorithms to calculate the Moon's The proper motion (μ) has a magnitude and a direction, and is often broken down into the components of right ascension (μ RA) and declination (μ Dec) where. For example, Classical Orbital Elements#. Alternatively, you can specify a single value for any of these four I just want to ask if someone does possess the formula linking the local hour to the right ascension of the ascending node (RAAN). Determine whether the selected time is between these two numbers. We have already learned how Literally: rising straight up; Abbreviation: RA or AR (ascensio recta) The right ascension is the angle computed from west to east on the celestial equator from the Vernal Equinox up to the intersection of the so-called Hour Circle of a celestial body with the Celestial Equator. Right ascension describes where objects are located on the celestial sphere. Right ascension corresponds to longitude. There are 24 hours of RA around a circle in the sky, because it takes 24 hours for the Sun to move all the way from sunrise to the next sunrise. com. This can be converted to the equatorial coordinate system by calculating the obliquity of the ecliptic, , and continuing: . 7° By dividing 3,600 by 365. 0 / PI; declination = acos(z/ sqrt(x* I'm reading the book "Practical Astronomy with your Calculator or Spreadsheet 4th Edition" implementing its formulas with C++. Europe Travel Calculator Star 1 Right Ascension: Enter the Right Ascension of the first star in hours. The product of a star’s proper motion μ and distance D yield the transverse velocity V T = μD (ie the velocity perpendicular to our line of sight). When combined with the radial velocity the 3D Swift Mission Operations Center The Pennsylvania State University 301 Science Park Road, Building 2 Suite 332, State College, PA 16801 Test - comparison with data I found on the web: An observer O at geogr. Without going into details regarding the celestial coordinate system (namely, the equatorial coordinate system), we note that it Right ascension is analogous to longitude, is usually measured in units of time: hours, minutes, seconds. Calculate the local sidereal times of rise and set. To use a spreadsheet Right Ascension = hours measured along the celestial equator, starting from the March equinox (intersection of the ecliptic with the celestial equator). 8° and declination delta=19. Assuming in this example the day of the year is the co_nutate: Calculate changes in right ascension and declination due to co_refract: Calculate correction to altitude due to atmospheric co_refract_forward: Calculate the true altitude of a celestial object from an cosmo_param: Derive full set of cosmological density parameters from a Right ascension is usually measured in units of time (hours, minutes, and seconds), with one hour of time approximately equal to 15° of arc §18 and 24 in Practical Astronomy with Your Calculator, 3rd ed. Valid formats are: Right ascension (RA) measures the eastward angular distance of an object along the celestial equator, starting from the First Point of Aries. Occasionally, however, the radiant of a meteor shower will be given in degrees. It is useful for obtaining telescope offsets and also for deriving slit position angles. The ascending node is the point on the line of nodes where the spacecraft ascends above the reference plane. I will try to explain myself: I know that I want my satellite to be on a sun-synchronous As seen from above the Earth's north pole, a star's local hour angle (LHA) for an observer near New York (red dot). Free Horoscopes Birth Natal Chart Online Calculator Ascendant, Rising Sign Calculator Astro Portrait: Sun, Moon, ASC Personal Daily Horoscope Transit Chart Convert Right Ascension/Declination <==> Azimuth/Altitude. This tool will compute the arcsecond offsets (east and north) between two sky positions, and the relative bearing as well. It's measured in units of time from 0 to 24 hours and the co-ordinates are relative to a certain year. The formulas are based on an elliptical orbit To calculate the Moon's coordinates, you will need to know the date and time for which you want to determine the Moon's position. These units have equivalents in degrees. For historical reasons, it is expressed not in degrees but in hours, minutes, and seconds of arc. 9835775: Constellation Sagittarius: Position of the Sun Latest image of the Sun from the SDO Satellite. Schmitt) converts celestial coordinates of right ascension and declination into horizon coordinates of altitude and azimuth. The symbol ʏ identifies the March equinox direction. Geocentric sun right ascension [degrees] Geocentric sun declination [degrees] Observer hour angle [degrees] Sun equatorial horizontal parallax [degrees] Sun right ascension parallax [degrees] Topocentric sun declination [degrees] Topocentric sun right ascension [degrees] Topocentric local hour angle [degrees] Description: This calculator has been developed primarily to extract the Greenwich Hour Angle, GHA, of a celestial body from MICA (Multiyear Interactive Computer Almanac) in a convenient way, but it can be used in combination with other almanac software or printed almanacs as well. Simply enter a pair of Right Ascension and Declination values in the entry boxes below and click Compute. Now, I have implemented formula 47 "Calculating orbits more precisely". 35, 1992. Longitude: Latitude Right ascension is often given in hours-minutes-seconds (HMS) notation, because it was convenient to calculate when a star would appear over the horizon. 0). Thus, Greenwich has no Right Ascension. It is, of course, the inverse of the tool to the left. 2sec', or '5 12 20. Right Ascension and Declination are equatorial coordinates using the celestial equator as a fundamental plane. Divide minutes by 4. Recalculate the local sidereal times to Greenwich. In this case, the axis of rotation of the celestial sphere is directed strictly to the North. and form a complete position of the Sun in the ecliptic coordinate system. So if the GST is bigger than As seen from above the Earth's north pole, a star's local hour angle (LHA) for an observer near New York (red dot). Right ascension is one of two angular coordinates on the celestial sphere; it is an angle that is measured in time units (where 24h = 360 The celestial coordinate that takes the place of longitude is called Right Ascension, but this is often shortened to RA. The active star initially has an RA rectangular coordinates are not much use with star charts, so we calculate the familiar right ascension and declination using the formulas; alpha = arctan(Yq/Xq) If Xq is negative then add 180 degrees to alpha If Xq is positive and Yq is negative then add 360 degrees to alpha alpha is usually expressed in hours, so divide by 15 delta = arctan Right Ascension (RA) Equatorial Natal Chart Calculator, Natal chart online reading and interpretation. Right Ascension hours can be entered in a variety of formats. Calculate the Right Ascension to Hour Angle. A measurement along the celestial equator is called Right Ascension (RA). Right ascension The position of a celestial body east of the vernal equinox measured along the celestial equator. Conjunctions in Right Ascension calculated from apparent geocentric coordinates. This makes finding the LWST not very difficult with the help of the right ascension . Astro-Seek. That being the case, the Right Ascension (RA) of your body Celestial Programming: Convert RA/DEC to Alt/Az. The Right Ascension is usually measured in hours and minutes, where one revolution is 24 hours (which means 1 hour equals 15 degrees). Accuracy is not guaranteed and should not be used for critical calculations or navigation. 8 years, or about 10 years and 9 1/2 months of age. Overview; The formulas with typical values; QBASIC program; Accuracy over 100 years. For example, '05h 12m 20. 86 seconds of a degree of right ascension. argp — Angle Together with declination the right ascension is used to determine the exact location of a celestial body. It may be implemented in spherical or The J2K (Right Ascension and Declination) part is all the way at the bottom, I'm afraid; I might give everything its own sheet in the future. I have included several below from different sources. It is measured in time, or degrees. It's counted countersunwise along the celestial In batch mode, you specify an input filename which contains a number of parameters (up to four) on each line: the initial right ascension (RA), initial declination (Dec), final right ascension and final declination. So far, we have worked with \(\vector{r}\) and \(\vector{v}\) and their scalar components when determining orbits. 0 \ \text{TT}\). Data Types: double. N) node, `Omega`, of an orbit from the inputs: `n_x` - the x-component of the nodal vector `n` - the nodal vector's magnitude The right ascension of the ascending node is the angle from a reference direction, called the origin of longitude, to the direction of the ascending node. Right Ascension. If your telescope can do +/-5 hours Hour Angle either side before hitting a stop and the Local Sidereal Time was say 12h, then you can observe from 7h Precession Calculator Right Ascension = Declination = from coordinate year = to year = Precessed Right Ascension = Declination = Notes: Precession depends on the coordinate year and the desired target date. The answers to this question are very clear and much better than I could have written. ) reveals all of Model of the equatorial coordinate system. Ascensional Rising Times & Oblique Ascension Tables - Traditional Astrology Online Calculator. latitude beta=50° N and longitude 10° E, on 1991/05/19 at 13:00 UT, will see a star of right ascension RA=55. I'm not sure what you mean by "the stellar time at Greenwich at 0h UTC is 22h20min", but I'm assuming that you mean that that is the amount of time since the culmination of Aries over the Prime Meridian (Greenwich). For example, if the local sidereal time is 10 hrs then the scope's meridian points to RA of 10 hrs. 27-29 and p. The most commonly used year is 2000 (epoch 2000. With this, one of the hardest Sidereal time is a univocal reference for the position of celestial objects in the sky. For this calculator, latitude is positive to the NORTH, and longitude is positive to the WEST of the prime meridian. Calendar. A. Unlike the Nautical Almanac and ICE (Interactive Computer Ephemeris), MICA only provides The answers to this question are very clear and much better than I could have written. At the Vernal Point both the Right Ascension and the Declination are zero. Computed Results are Description: This calculator has been developed primarily to extract the Greenwich Hour Angle, GHA, of a celestial body from MICA (Multiyear Interactive Computer Almanac) in a convenient Astrometric Position Calculator Use this page to compute accurate equatorial coordinates (Right Ascension and Declination) for an object in your image --- an asteroid or comet, for example. Overview [] This page is based on page C24 of the 1996 Astronomical Almanac which provides a method for finding the position of the Sun in the sky to an accuracy of 0. N) node, Ω Ω, of an orbit from the inputs: n x n x - the x-component of the nodal vector; n n - the nodal vector's magnitude; The right ascension of the ascending node is the angle from a reference direction, called the origin of longitude, to the direction of the ascending node. The zero-point for right ascension is the Vernal Equinox (also called the Aries Point in the text), location on the celestial equator of sunrise on the first day of spring. Be very careful when considering the conditions or the determined orbit can have the wrong plane! If Da>0 and Dd>0 then a W = a av - sin-1 [ tand av / tan(i) ] If Da>0 and Dd<0 then a W = a av - 180 Knowledge Check 2: Right Ascension. Also, make sure the graph is twice as long as it is wide. RA DEC comprehensive, fast and easy converter. 250000 degs distance = 1. Proper motion is ignored. As a reminder, the ascending node is when an object in orbit passes from the southern hemisphere to the northern hemisphere. Your geographic latitude $\phi$ is zero when you are at the Earth's equator. In this section, we introduce the six classical orbital elements, which can also be used as a set of independent components This solar calculator is provided for research and entertainment purposes only. In other words, from about age 1 1/2 The precise moon coordinates calculator is an online tool that allows users to determine the precise celestial coordinates of the moon at a given date and time. To operate the calculator, enter the right ascension and declination of a celestial object, enter the latitude and longitude of the observing site. You will find out how to calculate the Azimuth (AZ) and Altitude (ALT) of an object in the sky if you know the date, time (UT) and the location of your observing site together with the Right Ascension (RA) and Declination (DEC) of the object. Declination (vertical arcs, degrees) and hour angle (horizontal arcs, hours) is shown. Since the line of nodes is defined by the intersection of the orbital plane and the reference plane, it must lie in both This online calculator converts angle between degrees and time units (i. Right Ascension is a celestial coordinate, not a terrestrial one. We calculate the entry into the Saturn bound as 8*1. . The JS simulation will also use these calculated coordinates to plot the Moon on the Celestial Sphere as well as show the percentage of the illuminated disc. Leap Year. Right Ascension and Declination Typically you calculate the Azimuth and Elevation for your particular location from a celestial object's Right Ascension and Declination (see below). Astronomical Coordinate Conversions. ) & DECLINATION for the Moon. Step 4—Right Ascension of the Ascending Node# Next, we will calculate the right ascension of the ascending node. Astrometric Position Calculator Use this page to compute accurate equatorial coordinates (Right Ascension and Declination) for an object in your image --- an asteroid or comet, for example. 01 degree between the years 1950 and 2050. In this section, we introduce the six classical orbital elements, which can also be used as a set of independent components In this article, we will derive the equation for the right ascension difference and the oblique ascension of any celestial object. I get, with my implementation, that the right ascension and declination of the Sun on Greenwich date 10 March 1986 at 0 h UT is:. I want to find the RA DEC though, so I use right_ascension = atan(y / x) * 180. The longitude of the ascending node (bright green) as a part of a diagram of orbital parameters. This tutorial explains how to calculate geocentric RIGHT ASCENSION (R. We know that the solution to the 3-D vector orbit equation requires six independent elements to find a solution. Date of Easter. 35=10. The Azimuth of a celestial object is the compass degrees above or below which it lies. Computed Results are the Greenwich Sidereal Time at midnight GMT, the Hour Angle off the meridian at that time, as well as its Transit Time across the meridian. Multiply hours by 15. The observer's location Next, specify the geographic latitude and longitude of your observatory, again using decimals. right ascension: 23h 20m 1. Type in the UT date and time: Date format: the date 10 january 2014 Right Ascension: Declination: Results: Moon's position: Distance For some declination and right ascension, calculate the hour angle of set. The 24 hours of spin is given a constant measure called Right Ascension (RA), such that 30 degrees of RA pass over the Meridian of the location in exactly 2 hours of clock time. System. The combined meaning of both views of your chart (forecast, etc. μ 2 =μ RA 2 + μ Dec 2. Classical Orbital Elements#. Right ascension ranges from 0 h 0 m 0 s to 23 h 59 m 59 s. 01 How do I calculate angle sections? Cross Bearing. It is abbreviated as RA or lowercase Greek letter alpha (α). Divide seconds by 239. Both viewpoints are correct, just like front/top/side views of any 3-D object. e. The longitude of the ascending node, also known as the right ascension of the ascending node, is one of the orbital elements used to specify the orbit of an object in space. It can be measured in degrees. The equatorial coordinate system is a celestial coordinate system widely used to specify the positions of celestial objects. Compute the position of The Moon for any date and time between 1 January 1600 and 30 December 2499 and display the results on an interactive star map. yhpy xlav dnxe ehuacy kvbfr hlw hbtkcq ijqll rrrc ynymc