(81) Terpsichore
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Opposition	21 Apr 2026	13.4	3.398 AU	2.397 AU	13h49m	-17°21'	174.3°	1.7°
Today	4 Jun 2026	14.2	3.427 AU	2.671 AU	13h22m	-15°08'	131.4°	12.8°

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 Terpsichore are:

            e (Eccentricity)                : 0.2117711
            a (Semimajor axis)              : 2.8515286
            i (Inclination)                 : 7.80119
            Ω (Longitude of ascending node) : 0.89514
            ω (Argument of perihelion)      : 51.22360
            M (Mean anomaly)                : 118.66686
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 51.85837
            B (Latitude of perihelion)      : 6.07438
            P (Orbital period in years)     : 4.82            
        

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
2026-06-04 00:00 UT   13 22 26.3   -15 08 45     2.671    3.427  131.4   12.8   107   14.2 
2026-06-04 07:21 UT   13 22 21.6   -15 08 11     2.674    3.427  131.1   12.9   107   14.2 
2026-06-05 00:00 UT   13 22 11.3   -15 06 57     2.682    3.427  130.4   13.0   107   14.2 
2026-06-06 00:00 UT   13 21 57.6   -15 05 15     2.693    3.428  129.4   13.2   107   14.3 
2026-06-07 00:00 UT   13 21 45.0   -15 03 38     2.705    3.428  128.4   13.4   107   14.3 
2026-06-08 00:00 UT   13 21 33.6   -15 02 08     2.717    3.429  127.4   13.6   107   14.3 
2026-06-09 00:00 UT   13 21 23.5   -15 00 42     2.729    3.429  126.4   13.8   108   14.3 
2026-06-10 00:00 UT   13 21 14.5   -14 59 23     2.741    3.430  125.4   14.0   108   14.3 
2026-06-11 00:00 UT   13 21 06.8   -14 58 10     2.753    3.430  124.4   14.1   108   14.3 
2026-06-12 00:00 UT   13 21 00.2   -14 57 02     2.766    3.431  123.4   14.3   108   14.4 
2026-06-13 00:00 UT   13 20 54.8   -14 56 01     2.778    3.431  122.4   14.5   108   14.4 
2026-06-14 00:00 UT   13 20 50.7   -14 55 06     2.791    3.432  121.5   14.6   108   14.4 
2026-06-15 00:00 UT   13 20 47.7   -14 54 16     2.804    3.432  120.5   14.8   109   14.4 
2026-06-16 00:00 UT   13 20 45.9   -14 53 33     2.816    3.433  119.5   14.9   109   14.4 
2026-06-17 00:00 UT   13 20 45.3   -14 52 56     2.829    3.433  118.6   15.1   109   14.4 
2026-06-18 00:00 UT   13 20 45.9   -14 52 25     2.843    3.434  117.6   15.2   109   14.4 
2026-06-19 00:00 UT   13 20 47.7   -14 52 00     2.856    3.434  116.7   15.3   109   14.5 
2026-06-20 00:00 UT   13 20 50.6   -14 51 41     2.869    3.435  115.7   15.5   109   14.5 
2026-06-21 00:00 UT   13 20 54.6   -14 51 29     2.883    3.435  114.8   15.6   109   14.5 
2026-06-22 00:00 UT   13 20 59.8   -14 51 22     2.896    3.436  113.9   15.7   109   14.5 
2026-06-23 00:00 UT   13 21 06.1   -14 51 22     2.910    3.436  113.0   15.8   110   14.5 
2026-06-24 00:00 UT   13 21 13.6   -14 51 28     2.924    3.437  112.0   15.9   110   14.5 
2026-06-25 00:00 UT   13 21 22.1   -14 51 39     2.937    3.437  111.1   16.0   110   14.5 
2026-06-26 00:00 UT   13 21 31.8   -14 51 57     2.951    3.438  110.2   16.1   110   14.6 
2026-06-27 00:00 UT   13 21 42.5   -14 52 21     2.965    3.438  109.3   16.2   110   14.6 
2026-06-28 00:00 UT   13 21 54.4   -14 52 50     2.979    3.438  108.4   16.3   110   14.6 
2026-06-29 00:00 UT   13 22 07.3   -14 53 26     2.993    3.439  107.5   16.4   110   14.6 
2026-06-30 00:00 UT   13 22 21.2   -14 54 07     3.008    3.439  106.6   16.5   110   14.6 
2026-07-01 00:00 UT   13 22 36.2   -14 54 55     3.022    3.440  105.7   16.5   110   14.6 
2026-07-02 00:00 UT   13 22 52.2   -14 55 48     3.036    3.440  104.9   16.6   110   14.6 
2026-07-03 00:00 UT   13 23 09.3   -14 56 46     3.050    3.440  104.0   16.7   111   14.7 
2026-07-04 00:00 UT   13 23 27.3   -14 57 51     3.065    3.441  103.1   16.7   111   14.7 

    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.