Planet's position on ecliptic and equatorial planes Calculator

Calculates the ecliptic longitude and latitude, right ascension, celestial declination, and distance of the planets from Earth.

If your local time is on Daylight Saving time, add one hour to the time zone.
Planet's position on ecliptic and equatorial planes
Date
    1.  /
    2. ,
    3. (1900~2099)
    1. Local time
    2. h,
    3. Time zone
    4. h

The accuracy of the planet's position is ±6" in 1970- 2030.
    Planet's position on ecliptic and equatorial planes
    [1-10] /22Disp-Num
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    [1]  2018/12/03 00:21   Male / 40 years old level / A teacher / A researcher / Useful /
    Purpose of use
    simulation of the starry night
    Comment/Request
    I need to simulate stary night for simulation of a star sensor. For this purpose, I utilize HIPPARCOS catalog for stars, but in order to complete my simulation, I need the position of the sun, moon and the planets of the solar system in right ascension coordinate system (right acension and declination). Could you help me on this subject?

    Best regards
    [2]  2018/10/15 02:41   Male / 30 years old level / A teacher / A researcher / Very /
    Purpose of use
    Astrology
    Bug report
    I think the plane in graphic labeled "equinoctial" should be named "equatorial" ?
    from Keisan
    Thank you for your advice.
    We have revised it to "celestial equator".
    [3]  2018/07/12 00:06   Male / 20 years old level / High-school/ University/ Grad student / Very /
    Purpose of use
    PROJECT
    [4]  2016/07/03 20:49   Male / 20 years old level / High-school/ University/ Grad student / A little /
    Purpose of use
    Corresponding year 2016 with astronomical time by pinpointing quarters and cross-quarters.
    Comment/Request
    I love the simplicity and it would really be a useful tool for me, but I needed Earth's longitude. It would also really help out if the reverse search could be done, entering the coordinate and getting the date as an output, since what I was searching for is the exact day and time Earth's longitude reached 135°.
    [5]  2016/06/25 03:47   Male / 60 years old level or over / A retired people / Very /
    Purpose of use
    Setting-up starting positions on a Ptolemaic orrery
    [6]  2015/06/21 02:01   Male / 40 years old level / A teacher / A researcher / Useful /
    Purpose of use
    Data collection of planets
    [7]  2015/04/27 02:40   Male / 60 years old level or over / A retired people / Very /
    Purpose of use
    As a retired navigator of ships on the high the seas (long before GPS) I have had a genereal interest in astronomy during my whole professional life. The interest is still there!
    [8]  2015/02/01 02:39   Male / 60 years old level or over / Self-employed people / Very /
    Purpose of use
    teaching planet gravity assists for spacecraft.
    Comment/Request
    I also need the Earth's longitude for specific times. Any suggestions?
    [9]  2015/01/08 02:45   Male / 60 years old level or over / A retired people / Very /
    Purpose of use
    Build my own software using VSOP87 as described in "Astronomical Algloritms" from Meeus. Used this site to compare the results. No more than 2 seconds difference in Right ascension.
    [10]  2015/01/03 02:21   Male / 60 years old level or over / A teacher / A researcher / - /
    Purpose of use
    Need accurate star positions for prediction of occultations.
    Comment/Request
    Need to correct RA and Dec for precession.
    Expect to convert to ecliptic longitude and latitude, apply shift to longitude, then convert back.

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