(24) Themis
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Opposition	30 May 2026	11.5	3.188 AU	2.174 AU	16h29m	-22°24'	179.3°	0.2°
Today	13 Jul 2026	12.5	3.234 AU	2.457 AU	16h03m	-21°22'	132.7°	13.3°

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)                : 0.1153800
            a (Semimajor axis)              : 3.1439977
            i (Inclination)                 : 0.73662
            Ω (Longitude of ascending node) : 36.39074
            ω (Argument of perihelion)      : 109.22178
            M (Mean anomaly)                : 92.01695
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : -34.38601
            B (Latitude of perihelion)      : 0.69555
            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
2026-07-13 00:00 UT   16 03 22.5   -21 22 26     2.457    3.234  132.7   13.3   101   12.5 
2026-07-13 12:36 UT   16 03 16.2   -21 22 07     2.463    3.235  132.2   13.5   101   12.5 
2026-07-14 00:00 UT   16 03 10.7   -21 21 52     2.469    3.235  131.7   13.6   101   12.5 
2026-07-15 00:00 UT   16 03 00.3   -21 21 21     2.480    3.237  130.7   13.8   101   12.5 
2026-07-16 00:00 UT   16 02 51.3   -21 20 53     2.492    3.238  129.8   14.0   101   12.6 
2026-07-17 00:00 UT   16 02 43.5   -21 20 29     2.504    3.239  128.8   14.2   101   12.6 
2026-07-18 00:00 UT   16 02 37.1   -21 20 09     2.516    3.240  127.8   14.4   101   12.6 
2026-07-19 00:00 UT   16 02 32.0   -21 19 52     2.528    3.241  126.8   14.5   101   12.6 
2026-07-20 00:00 UT   16 02 28.3   -21 19 39     2.540    3.242  125.8   14.7   101   12.6 
2026-07-21 00:00 UT   16 02 25.9   -21 19 29     2.553    3.243  124.9   14.9   101   12.6 
2026-07-22 00:00 UT   16 02 24.8   -21 19 23     2.565    3.244  123.9   15.1   101   12.7 
2026-07-23 00:00 UT   16 02 25.0   -21 19 20     2.578    3.245  123.0   15.2   101   12.7 
2026-07-24 00:00 UT   16 02 26.5   -21 19 21     2.591    3.246  122.0   15.4   101   12.7 
2026-07-25 00:00 UT   16 02 29.3   -21 19 26     2.604    3.247  121.1   15.5   101   12.7 
2026-07-26 00:00 UT   16 02 33.4   -21 19 34     2.617    3.248  120.1   15.7   101   12.7 
2026-07-27 00:00 UT   16 02 38.7   -21 19 45     2.630    3.249  119.2   15.8   101   12.7 
2026-07-28 00:00 UT   16 02 45.4   -21 19 60     2.644    3.250  118.3   16.0   101   12.8 
2026-07-29 00:00 UT   16 02 53.3   -21 20 18     2.657    3.251  117.3   16.1   101   12.8 
2026-07-30 00:00 UT   16 03 02.5   -21 20 39     2.671    3.252  116.4   16.2   101   12.8 
2026-07-31 00:00 UT   16 03 12.9   -21 21 04     2.684    3.253  115.5   16.4   101   12.8 
2026-08-01 00:00 UT   16 03 24.5   -21 21 33     2.698    3.254  114.6   16.5   101   12.8 
2026-08-02 00:00 UT   16 03 37.4   -21 22 04     2.712    3.255  113.7   16.6   101   12.8 
2026-08-03 00:00 UT   16 03 51.5   -21 22 39     2.726    3.256  112.8   16.7   101   12.9 
2026-08-04 00:00 UT   16 04 06.8   -21 23 17     2.740    3.257  111.9   16.8   101   12.9 
2026-08-05 00:00 UT   16 04 23.4   -21 23 58     2.754    3.258  111.0   16.9   101   12.9 
2026-08-06 00:00 UT   16 04 41.1   -21 24 42     2.768    3.259  110.1   17.0   101   12.9 
2026-08-07 00:00 UT   16 04 60.0   -21 25 29     2.782    3.260  109.2   17.1   101   12.9 
2026-08-08 00:00 UT   16 05 20.0   -21 26 20     2.797    3.261  108.4   17.2   101   12.9 
2026-08-09 00:00 UT   16 05 41.3   -21 27 13     2.811    3.262  107.5   17.2   101   12.9 
2026-08-10 00:00 UT   16 06 03.6   -21 28 09     2.826    3.263  106.6   17.3   101   13.0 
2026-08-11 00:00 UT   16 06 27.2   -21 29 08     2.840    3.264  105.7   17.4   101   13.0 
2026-08-12 00:00 UT   16 06 51.9   -21 30 10     2.855    3.265  104.9   17.5   101   13.0 

    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.