(24) Themis
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	25 May 2026	11.7	3.182 AU	2.174 AU	16h34m	-22°32'	173.2°	2.2°
Opposition	30 May 2026	11.5	3.188 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)                : 0.1153430
            a (Semimajor axis)              : 3.1432542
            i (Inclination)                 : 0.73670
            Ω (Longitude of ascending node) : 36.39221
            ω (Argument of perihelion)      : 109.10755
            M (Mean anomaly)                : 56.76452
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : -34.49877
            B (Latitude of perihelion)      : 0.69611
            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.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2026-05-25 00:00 UT   16 34 11.6   -22 32 58     2.174    3.182  173.2    2.2   283   11.7 
2026-05-25 08:58 UT   16 33 52.9   -22 32 24     2.173    3.182  173.6    2.0   284   11.6 
2026-05-26 00:00 UT   16 33 21.4   -22 31 26     2.173    3.183  174.3    1.8   284   11.6 
2026-05-27 00:00 UT   16 32 31.1   -22 29 53     2.173    3.184  175.5    1.4   286   11.6 
2026-05-28 00:00 UT   16 31 40.7   -22 28 19     2.173    3.185  176.6    1.1   289   11.6 
2026-05-29 00:00 UT   16 30 50.1   -22 26 43     2.173    3.186  177.7    0.7   294   11.5 
2026-05-30 00:00 UT   16 29 59.6   -22 25 06     2.174    3.187  178.8    0.4   309   11.5 
2026-05-31 00:00 UT   16 29 09.0   -22 23 27     2.174    3.188  179.4    0.2    21   11.5 
2026-06-01 00:00 UT   16 28 18.6   -22 21 47     2.175    3.189  178.6    0.4    74   11.5 
2026-06-02 00:00 UT   16 27 28.2   -22 20 06     2.177    3.190  177.5    0.8    85   11.6 
2026-06-03 00:00 UT   16 26 38.1   -22 18 25     2.179    3.191  176.4    1.2    90   11.6 
2026-06-04 00:00 UT   16 25 48.1   -22 16 42     2.181    3.192  175.2    1.5    92   11.6 
2026-06-05 00:00 UT   16 24 58.4   -22 14 59     2.183    3.194  174.1    1.9    93   11.7 
2026-06-06 00:00 UT   16 24 09.1   -22 13 15     2.185    3.195  172.9    2.2    94   11.7 
2026-06-07 00:00 UT   16 23 20.1   -22 11 31     2.188    3.196  171.8    2.6    95   11.7 
2026-06-08 00:00 UT   16 22 31.5   -22 09 46     2.191    3.197  170.6    3.0    96   11.7 
2026-06-09 00:00 UT   16 21 43.3   -22 08 01     2.195    3.198  169.5    3.3    96   11.8 
2026-06-10 00:00 UT   16 20 55.7   -22 06 16     2.198    3.199  168.4    3.7    97   11.8 
2026-06-11 00:00 UT   16 20 08.6   -22 04 32     2.202    3.200  167.2    4.0    97   11.8 
2026-06-12 00:00 UT   16 19 22.1   -22 02 47     2.206    3.201  166.1    4.4    97   11.8 
2026-06-13 00:00 UT   16 18 36.2   -22 01 03     2.211    3.202  164.9    4.7    98   11.9 
2026-06-14 00:00 UT   16 17 51.1   -21 59 20     2.215    3.203  163.8    5.1    98   11.9 
2026-06-15 00:00 UT   16 17 06.6   -21 57 37     2.220    3.204  162.7    5.4    98   11.9 
2026-06-16 00:00 UT   16 16 23.0   -21 55 55     2.226    3.205  161.6    5.8    98   11.9 
2026-06-17 00:00 UT   16 15 40.1   -21 54 13     2.231    3.207  160.4    6.1    98   12.0 
2026-06-18 00:00 UT   16 14 58.1   -21 52 33     2.237    3.208  159.3    6.4    98   12.0 
2026-06-19 00:00 UT   16 14 17.0   -21 50 55     2.243    3.209  158.2    6.8    99   12.0 
2026-06-20 00:00 UT   16 13 36.8   -21 49 17     2.249    3.210  157.1    7.1    99   12.0 
2026-06-21 00:00 UT   16 12 57.5   -21 47 41     2.256    3.211  156.0    7.4    99   12.0 
2026-06-22 00:00 UT   16 12 19.3   -21 46 07     2.263    3.212  154.9    7.7    99   12.1 
2026-06-23 00:00 UT   16 11 42.0   -21 44 35     2.270    3.213  153.8    8.0    99   12.1 
2026-06-24 00:00 UT   16 11 05.9   -21 43 04     2.277    3.214  152.7    8.3    99   12.1 

    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.