(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	29 Jun 2026	12.2	3.220 AU	2.317 AU	16h08m	-21°36'	147.3°	9.8°

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) : 36.39073
            ω (Argument of perihelion)      : 109.22179
            M (Mean anomaly)                : 92.01696
            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
2026-06-29 00:00 UT   16 08 22.1   -21 36 04     2.317    3.220  147.3    9.8   100   12.2 
2026-06-29 16:17 UT   16 08 02.0   -21 35 11     2.323    3.220  146.5   10.0   100   12.2 
2026-06-30 00:00 UT   16 07 52.6   -21 34 47     2.326    3.221  146.2   10.1   100   12.2 
2026-07-01 00:00 UT   16 07 24.4   -21 33 32     2.335    3.222  145.1   10.4   100   12.3 
2026-07-02 00:00 UT   16 06 57.3   -21 32 20     2.344    3.223  144.1   10.7   100   12.3 
2026-07-03 00:00 UT   16 06 31.4   -21 31 11     2.353    3.224  143.0   10.9   100   12.3 
2026-07-04 00:00 UT   16 06 06.8   -21 30 05     2.363    3.225  142.0   11.2   100   12.3 
2026-07-05 00:00 UT   16 05 43.4   -21 29 01     2.372    3.226  140.9   11.5   100   12.3 
2026-07-06 00:00 UT   16 05 21.3   -21 28 00     2.382    3.227  139.9   11.7   100   12.4 
2026-07-07 00:00 UT   16 05 00.5   -21 27 03     2.392    3.228  138.8   12.0   100   12.4 
2026-07-08 00:00 UT   16 04 40.9   -21 26 09     2.403    3.229  137.8   12.2   100   12.4 
2026-07-09 00:00 UT   16 04 22.6   -21 25 18     2.413    3.230  136.8   12.4   100   12.4 
2026-07-10 00:00 UT   16 04 05.6   -21 24 30     2.424    3.231  135.8   12.7   100   12.4 
2026-07-11 00:00 UT   16 03 49.9   -21 23 45     2.435    3.232  134.8   12.9   101   12.5 
2026-07-12 00:00 UT   16 03 35.5   -21 23 04     2.446    3.233  133.7   13.1   101   12.5 
2026-07-13 00:00 UT   16 03 22.5   -21 22 26     2.457    3.234  132.7   13.3   101   12.5 
2026-07-14 00:00 UT   16 03 10.8   -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 

    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.