(81) Terpsichore
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	8 Oct 2026	15.1	3.454 AU	4.261 AU	14h47m	-21°31'	32.0°	8.8°
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
2026-10-08 00:00 UT   14 47 46.6   -21 31 01     4.261    3.454   32.0    8.8   116   15.1 
2026-10-08 15:23 UT   14 48 35.2   -21 34 31     4.265    3.454   31.6    8.7   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 
2026-10-10 00:00 UT   14 50 18.8   -21 41 57     4.275    3.454   30.7    8.5   116   15.1 
2026-10-11 00:00 UT   14 51 35.4   -21 47 25     4.282    3.454   30.0    8.3   116   15.1 
2026-10-12 00:00 UT   14 52 52.2   -21 52 53     4.289    3.454   29.3    8.1   116   15.1 
2026-10-13 00:00 UT   14 54 09.4   -21 58 20     4.296    3.454   28.7    8.0   116   15.1 
2026-10-14 00:00 UT   14 55 26.9   -22 03 47     4.302    3.453   28.0    7.8   116   15.1 
2026-10-15 00:00 UT   14 56 44.6   -22 09 14     4.309    3.453   27.3    7.6   117   15.1 
2026-10-16 00:00 UT   14 58 02.7   -22 14 40     4.315    3.453   26.7    7.4   117   15.1 
2026-10-17 00:00 UT   14 59 21.0   -22 20 06     4.321    3.453   26.0    7.3   117   15.0 
2026-10-18 00:00 UT   15 00 39.6   -22 25 31     4.327    3.453   25.4    7.1   117   15.0 
2026-10-19 00:00 UT   15 01 58.4   -22 30 56     4.332    3.453   24.7    6.9   118   15.0 
2026-10-20 00:00 UT   15 03 17.5   -22 36 20     4.338    3.452   24.0    6.7   118   15.0 
2026-10-21 00:00 UT   15 04 36.9   -22 41 44     4.343    3.452   23.4    6.6   118   15.0 
2026-10-22 00:00 UT   15 05 56.5   -22 47 07     4.349    3.452   22.7    6.4   118   15.0 
2026-10-23 00:00 UT   15 07 16.4   -22 52 29     4.354    3.452   22.1    6.2   119   15.0 
2026-10-24 00:00 UT   15 08 36.5   -22 57 50     4.359    3.452   21.4    6.0   119   15.0 
2026-10-25 00:00 UT   15 09 56.9   -23 03 11     4.363    3.451   20.8    5.9   119   15.0 
2026-10-26 00:00 UT   15 11 17.5   -23 08 30     4.368    3.451   20.1    5.7   120   15.0 
2026-10-27 00:00 UT   15 12 38.4   -23 13 49     4.372    3.451   19.5    5.5   120   15.0 
2026-10-28 00:00 UT   15 13 59.5   -23 19 07     4.377    3.451   18.8    5.3   121   15.0 
2026-10-29 00:00 UT   15 15 20.8   -23 24 24     4.381    3.451   18.2    5.2   121   15.0 
2026-10-30 00:00 UT   15 16 42.3   -23 29 40     4.384    3.450   17.5    5.0   122   15.0 
2026-10-31 00:00 UT   15 18 04.1   -23 34 55     4.388    3.450   16.9    4.8   122   15.0 
2026-11-01 00:00 UT   15 19 26.1   -23 40 09     4.392    3.450   16.3    4.6   123   15.0 
2026-11-02 00:00 UT   15 20 48.3   -23 45 22     4.395    3.450   15.6    4.4   124   14.9 
2026-11-03 00:00 UT   15 22 10.8   -23 50 33     4.398    3.449   15.0    4.3   124   14.9 

    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.