(24) Themis
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	5 May 2025	12.3	2.812 AU	2.330 AU	10h18m	+11°09'	108.1°	19.9°
Opposition	30 May 2026	11.5	3.187 AU	2.174 AU	16h29m	-22°24'	179.3°	0.2°

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)                : 0.1152743
            a (Semimajor axis)              : 3.1427396
            i (Inclination)                 : 0.73676
            Ω (Longitude of ascending node) : 36.38939
            ω (Argument of perihelion)      : 109.03456
            M (Mean anomaly)                : 21.45734
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : -34.57459
            B (Latitude of perihelion)      : 0.69647
            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
2025-05-05 00:00 UT   10 18 50.9   +11 09 09     2.330    2.812  108.1   19.9   111   12.3 
2025-05-05 06:49 UT   10 18 58.4   +11 08 20     2.334    2.812  107.9   20.0   111   12.3 
2025-05-06 00:00 UT   10 19 17.8   +11 06 14     2.343    2.813  107.3   20.0   111   12.3 
2025-05-07 00:00 UT   10 19 45.8   +11 03 12     2.356    2.813  106.4   20.1   111   12.4 
2025-05-08 00:00 UT   10 20 15.0   +11 00 04     2.369    2.814  105.6   20.2   111   12.4 
2025-05-09 00:00 UT   10 20 45.3   +10 56 50     2.383    2.814  104.7   20.3   111   12.4 
2025-05-10 00:00 UT   10 21 16.7   +10 53 29     2.396    2.815  103.9   20.4   111   12.4 
2025-05-11 00:00 UT   10 21 49.2   +10 50 02     2.409    2.815  103.1   20.4   111   12.4 
2025-05-12 00:00 UT   10 22 22.8   +10 46 28     2.422    2.816  102.3   20.5   111   12.4 
2025-05-13 00:00 UT   10 22 57.4   +10 42 49     2.436    2.816  101.5   20.6   111   12.4 
2025-05-14 00:00 UT   10 23 33.1   +10 39 03     2.449    2.817  100.7   20.6   111   12.5 
2025-05-15 00:00 UT   10 24 09.8   +10 35 11     2.463    2.818   99.9   20.7   111   12.5 
2025-05-16 00:00 UT   10 24 47.5   +10 31 13     2.476    2.818   99.1   20.7   111   12.5 
2025-05-17 00:00 UT   10 25 26.2   +10 27 10     2.489    2.819   98.3   20.8   111   12.5 
2025-05-18 00:00 UT   10 26 05.9   +10 23 00     2.503    2.819   97.5   20.8   111   12.5 
2025-05-19 00:00 UT   10 26 46.5   +10 18 45     2.517    2.820   96.7   20.9   111   12.5 
2025-05-20 00:00 UT   10 27 28.1   +10 14 24     2.530    2.820   95.9   20.9   112   12.5 
2025-05-21 00:00 UT   10 28 10.7   +10 09 57     2.544    2.821   95.2   20.9   112   12.5 
2025-05-22 00:00 UT   10 28 54.1   +10 05 24     2.557    2.821   94.4   21.0   112   12.6 
2025-05-23 00:00 UT   10 29 38.5   +10 00 46     2.571    2.822   93.6   21.0   112   12.6 
2025-05-24 00:00 UT   10 30 23.8   +09 56 03     2.585    2.823   92.9   21.0   112   12.6 
2025-05-25 00:00 UT   10 31 09.9   +09 51 14     2.598    2.823   92.1   21.0   112   12.6 
2025-05-26 00:00 UT   10 31 56.9   +09 46 19     2.612    2.824   91.4   21.0   112   12.6 
2025-05-27 00:00 UT   10 32 44.8   +09 41 20     2.626    2.824   90.6   21.0   112   12.6 
2025-05-28 00:00 UT   10 33 33.5   +09 36 14     2.639    2.825   89.9   21.0   112   12.6 
2025-05-29 00:00 UT   10 34 23.1   +09 31 04     2.653    2.826   89.1   21.0   112   12.6 
2025-05-30 00:00 UT   10 35 13.4   +09 25 49     2.667    2.826   88.4   21.0   112   12.7 
2025-05-31 00:00 UT   10 36 04.5   +09 20 28     2.680    2.827   87.7   21.0   112   12.7 
2025-06-01 00:00 UT   10 36 56.4   +09 15 02     2.694    2.827   86.9   21.0   112   12.7 
2025-06-02 00:00 UT   10 37 49.1   +09 09 32     2.708    2.828   86.2   21.0   112   12.7 
2025-06-03 00:00 UT   10 38 42.5   +09 03 56     2.721    2.829   85.5   20.9   112   12.7 
2025-06-04 00:00 UT   10 39 36.7   +08 58 16     2.735    2.829   84.8   20.9   112   12.7 

    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.