(24) Themis
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	22 Jan 2025	11.7	2.781 AU	1.964 AU	10h58m	+07°34'	138.9°	13.5°
Opposition	25 Feb 2025	10.8	2.787 AU	1.797 AU	10h38m	+09°39'	178.8°	0.4°

The interactive orbit chart above shows the body's path through the solar system and its position at the given date. Green and blue lines are shown perpendicular to the ecliptic plane: Green if the path is above the ecliptic plane, blue if it is below. (Left-click and drag to rotate the view; Right-click and drag to move the view; Use scroll wheel to zoom in our out.)

The orbital elements of Themis are:

            e (Eccentricity)                : 0.1153213
            a (Semimajor axis)              : 3.1428662
            i (Inclination)                 : 0.73676
            Ω (Longitude of ascending node) : 36.39034
            ω (Argument of perihelion)      : 108.96103
            M (Mean anomaly)                : 346.13416
            Epoch                           : 2024 Oct 17

            L (Longitude of perihelion)     : -34.64717
            B (Latitude of perihelion)      : 0.69678
            P (Orbital period in years)     : 5.57            
        

The light curve chart below shows the estimated development of the minor planet's magnitude.

The all-sky chart below shows the path of the minor planet over the same period as the light curve. The current position is marked yellow.

The following chart shows the path of the minor planet in the next few days. The field of view is optimized for (~10x50) binoculars and finderscopes. A more printer-friendly version of the same chart can be found below.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2025-01-22 00:00 UT   10 58 46.4   +07 34 11     1.964    2.781  138.9   13.5   291   11.7 
2025-01-22 05:05 UT   10 58 42.9   +07 34 35     1.962    2.781  139.1   13.4   291   11.7 
2025-01-23 00:00 UT   10 58 29.5   +07 36 06     1.955    2.781  140.0   13.2   291   11.7 
2025-01-24 00:00 UT   10 58 11.1   +07 38 10     1.946    2.781  141.1   12.9   291   11.7 
2025-01-25 00:00 UT   10 57 51.4   +07 40 21     1.938    2.781  142.2   12.5   291   11.6 
2025-01-26 00:00 UT   10 57 30.3   +07 42 41     1.929    2.782  143.3   12.2   291   11.6 
2025-01-27 00:00 UT   10 57 07.8   +07 45 09     1.921    2.782  144.4   11.9   291   11.6 
2025-01-28 00:00 UT   10 56 44.0   +07 47 44     1.914    2.782  145.5   11.6   291   11.6 
2025-01-29 00:00 UT   10 56 18.9   +07 50 28     1.906    2.782  146.6   11.2   291   11.6 
2025-01-30 00:00 UT   10 55 52.4   +07 53 18     1.899    2.782  147.8   10.9   291   11.5 
2025-01-31 00:00 UT   10 55 24.7   +07 56 17     1.891    2.782  148.9   10.5   291   11.5 
2025-02-01 00:00 UT   10 54 55.7   +07 59 22     1.885    2.782  150.1   10.2   291   11.5 
2025-02-02 00:00 UT   10 54 25.5   +08 02 34     1.878    2.782  151.2    9.8   291   11.5 
2025-02-03 00:00 UT   10 53 54.1   +08 05 52     1.871    2.782  152.4    9.5   291   11.4 
2025-02-04 00:00 UT   10 53 21.5   +08 09 17     1.865    2.783  153.5    9.1   290   11.4 
2025-02-05 00:00 UT   10 52 47.8   +08 12 48     1.859    2.783  154.7    8.7   290   11.4 
2025-02-06 00:00 UT   10 52 13.1   +08 16 25     1.854    2.783  155.9    8.3   290   11.4 
2025-02-07 00:00 UT   10 51 37.2   +08 20 08     1.848    2.783  157.0    7.9   290   11.4 
2025-02-08 00:00 UT   10 51 00.4   +08 23 56     1.843    2.783  158.2    7.6   290   11.3 
2025-02-09 00:00 UT   10 50 22.6   +08 27 48     1.838    2.783  159.4    7.2   290   11.3 
2025-02-10 00:00 UT   10 49 43.9   +08 31 46     1.834    2.784  160.6    6.8   289   11.3 
2025-02-11 00:00 UT   10 49 04.3   +08 35 48     1.829    2.784  161.8    6.4   289   11.3 
2025-02-12 00:00 UT   10 48 23.8   +08 39 55     1.825    2.784  162.9    6.0   289   11.2 
2025-02-13 00:00 UT   10 47 42.6   +08 44 05     1.821    2.784  164.1    5.6   289   11.2 
2025-02-14 00:00 UT   10 47 00.6   +08 48 19     1.818    2.784  165.3    5.2   288   11.2 
2025-02-15 00:00 UT   10 46 17.9   +08 52 36     1.814    2.784  166.5    4.7   288   11.2 
2025-02-16 00:00 UT   10 45 34.5   +08 56 56     1.811    2.785  167.7    4.3   288   11.1 
2025-02-17 00:00 UT   10 44 50.5   +09 01 19     1.809    2.785  168.9    3.9   287   11.1 
2025-02-18 00:00 UT   10 44 05.9   +09 05 44     1.806    2.785  170.1    3.5   286   11.1 
2025-02-19 00:00 UT   10 43 20.8   +09 10 11     1.804    2.785  171.3    3.1   286   11.1 
2025-02-20 00:00 UT   10 42 35.3   +09 14 40     1.802    2.785  172.5    2.6   284   11.0 
2025-02-21 00:00 UT   10 41 49.4   +09 19 10     1.800    2.786  173.7    2.2   283   11.0 

    Terminology:
            
    delta:  distance between minor planet and earth in AU
    radius: distance between minor planet and sun in AU
    magn:   magnitude (brightness) estimate    
    ra:     right ascension in hours (24h = 360deg)
    dec:    declination in degrees
    elong:  elongation in degrees (angle sun-earth-minor planet)    
    phase:  phase angle in degrees (angle sun-minor planet-earth)        
    AU:     Astronomical Unit (mean distance between earth and sun: 149597870.7 km
    

Orbital elements provided by the MPC (Minor Planet Center).
Calculations by a modified version of AAPlus, a C# implementation of the AA+ project by PJ Naughter from the algorithms presented in the book "Astronomical Algorithms" by Jean Meeus.
NGC2000 dso catalog and star labels from VizieR as provided by the Strasbourg astronomical Data Center.
Tycho2 catalog from the ESO archive.