(81) Terpsichore
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	10 Sep 2026	15.1	3.455 AU	3.998 AU	14h14m	-19°00'	51.1°	13.1°
Opposition	23 Jun 2027	13.3	3.254 AU	2.251 AU	18h09m	-34°44'	168.7°	3.5°

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)                : 0.2115948
            a (Semimajor axis)              : 2.8518803
            i (Inclination)                 : 7.80051
            Ω (Longitude of ascending node) : 0.89287
            ω (Argument of perihelion)      : 51.22995
            M (Mean anomaly)                : 159.60693
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 51.86251
            B (Latitude of perihelion)      : 6.07439
            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
2026-09-10 00:00 UT   14 14 42.5   -19 00 27     3.998    3.455   51.1   13.1   114   15.1 
2026-09-10 14:19 UT   14 15 21.6   -19 03 32     4.005    3.455   50.6   13.0   114   15.1 
2026-09-11 00:00 UT   14 15 48.1   -19 05 38     4.009    3.455   50.4   13.0   114   15.1 
2026-09-12 00:00 UT   14 16 54.1   -19 10 50     4.021    3.455   49.7   12.8   114   15.1 
2026-09-13 00:00 UT   14 18 00.5   -19 16 04     4.031    3.455   49.0   12.7   114   15.1 
2026-09-14 00:00 UT   14 19 07.4   -19 21 19     4.042    3.455   48.3   12.6   114   15.1 
2026-09-15 00:00 UT   14 20 14.7   -19 26 35     4.053    3.455   47.6   12.4   114   15.1 
2026-09-16 00:00 UT   14 21 22.4   -19 31 52     4.063    3.455   46.9   12.3   114   15.1 
2026-09-17 00:00 UT   14 22 30.5   -19 37 11     4.074    3.455   46.2   12.1   114   15.1 
2026-09-18 00:00 UT   14 23 39.0   -19 42 30     4.084    3.455   45.5   12.0   114   15.1 
2026-09-19 00:00 UT   14 24 47.9   -19 47 50     4.094    3.455   44.8   11.8   114   15.1 
2026-09-20 00:00 UT   14 25 57.2   -19 53 11     4.104    3.455   44.2   11.7   114   15.1 
2026-09-21 00:00 UT   14 27 06.9   -19 58 33     4.114    3.455   43.5   11.5   114   15.1 
2026-09-22 00:00 UT   14 28 17.0   -20 03 56     4.124    3.455   42.8   11.4   114   15.1 
2026-09-23 00:00 UT   14 29 27.4   -20 09 19     4.133    3.455   42.1   11.2   114   15.1 
2026-09-24 00:00 UT   14 30 38.2   -20 14 43     4.143    3.455   41.4   11.1   114   15.1 
2026-09-25 00:00 UT   14 31 49.4   -20 20 08     4.152    3.455   40.8   10.9   114   15.1 
2026-09-26 00:00 UT   14 33 01.0   -20 25 33     4.161    3.455   40.1   10.8   114   15.1 
2026-09-27 00:00 UT   14 34 12.9   -20 30 59     4.171    3.455   39.4   10.6   114   15.1 
2026-09-28 00:00 UT   14 35 25.1   -20 36 25     4.179    3.455   38.7   10.5   115   15.1 
2026-09-29 00:00 UT   14 36 37.7   -20 41 51     4.188    3.455   38.0   10.3   115   15.1 
2026-09-30 00:00 UT   14 37 50.7   -20 47 18     4.197    3.455   37.4   10.1   115   15.1 
2026-10-01 00:00 UT   14 39 04.0   -20 52 45     4.205    3.455   36.7   10.0   115   15.1 
2026-10-02 00:00 UT   14 40 17.6   -20 58 13     4.214    3.455   36.0    9.8   115   15.1 
2026-10-03 00:00 UT   14 41 31.6   -21 03 41     4.222    3.455   35.4    9.6   115   15.1 
2026-10-04 00:00 UT   14 42 46.0   -21 09 09     4.230    3.455   34.7    9.5   115   15.1 
2026-10-05 00:00 UT   14 44 00.6   -21 14 37     4.238    3.454   34.0    9.3   115   15.1 
2026-10-06 00:00 UT   14 45 15.6   -21 20 05     4.246    3.454   33.3    9.2   115   15.1 
2026-10-07 00:00 UT   14 46 30.9   -21 25 33     4.253    3.454   32.7    9.0   115   15.1 
2026-10-08 00:00 UT   14 47 46.6   -21 31 01     4.261    3.454   32.0    8.8   116   15.1 
2026-10-09 00:00 UT   14 49 02.5   -21 36 29     4.268    3.454   31.3    8.7   116   15.1 

    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.