(129) Antigone
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	16 Feb 2026	12.8	2.947 AU	3.841 AU	23h25m	-10°16'	21.8°	7.2°
Opposition	30 Oct 2026	12.0	3.365 AU	2.404 AU	02h41m	-02°19'	162.9°	5.0°

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 Antigone are:

            e (Eccentricity)                : 0.2130720
            a (Semimajor axis)              : 2.8683465
            i (Inclination)                 : 12.26995
            Ω (Longitude of ascending node) : 135.65431
            ω (Argument of perihelion)      : 110.53072
            M (Mean anomaly)                : 67.63476
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 66.62366
            B (Latitude of perihelion)      : 11.47964
            P (Orbital period in years)     : 4.86            
        

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
2026-02-16 00:00 UT   23 25 19.2   -10 16 41     3.841    2.947   21.8    7.2    82   12.8 
2026-02-16 11:31 UT   23 26 01.4   -10 12 43     3.844    2.948   21.6    7.1    82   12.8 
2026-02-17 00:00 UT   23 26 47.2   -10 08 26     3.848    2.949   21.2    7.0    82   12.8 
2026-02-18 00:00 UT   23 28 15.2   -10 00 10     3.855    2.951   20.7    6.8    83   12.8 
2026-02-19 00:00 UT   23 29 43.2   -09 51 55     3.862    2.953   20.1    6.6    84   12.8 
2026-02-20 00:00 UT   23 31 11.2   -09 43 39     3.869    2.955   19.5    6.4    84   12.8 
2026-02-21 00:00 UT   23 32 39.1   -09 35 22     3.876    2.957   18.9    6.2    85   12.8 
2026-02-22 00:00 UT   23 34 07.0   -09 27 06     3.882    2.959   18.3    6.0    85   12.8 
2026-02-23 00:00 UT   23 35 34.9   -09 18 50     3.888    2.962   17.7    5.8    86   12.8 
2026-02-24 00:00 UT   23 37 02.7   -09 10 33     3.895    2.964   17.2    5.7    87   12.8 
2026-02-25 00:00 UT   23 38 30.5   -09 02 17     3.901    2.966   16.6    5.5    88   12.8 
2026-02-26 00:00 UT   23 39 58.2   -08 54 01     3.907    2.968   16.0    5.3    89   12.8 
2026-02-27 00:00 UT   23 41 25.9   -08 45 44     3.912    2.970   15.5    5.1    90   12.8 
2026-02-28 00:00 UT   23 42 53.5   -08 37 28     3.918    2.972   14.9    4.9    91   12.8 
2026-03-01 00:00 UT   23 44 21.1   -08 29 13     3.923    2.974   14.4    4.7    92   12.8 
2026-03-02 00:00 UT   23 45 48.6   -08 20 57     3.929    2.976   13.8    4.6    93   12.8 
2026-03-03 00:00 UT   23 47 16.1   -08 12 42     3.934    2.978   13.3    4.4    94   12.8 
2026-03-04 00:00 UT   23 48 43.5   -08 04 27     3.939    2.980   12.8    4.2    96   12.7 
2026-03-05 00:00 UT   23 50 10.9   -07 56 13     3.944    2.982   12.3    4.0    97   12.7 
2026-03-06 00:00 UT   23 51 38.2   -07 47 59     3.948    2.984   11.7    3.9    99   12.7 
2026-03-07 00:00 UT   23 53 05.5   -07 39 45     3.953    2.986   11.2    3.7   100   12.7 
2026-03-08 00:00 UT   23 54 32.7   -07 31 33     3.958    2.988   10.8    3.6   102   12.7 
2026-03-09 00:00 UT   23 55 59.8   -07 23 20     3.962    2.990   10.3    3.4   104   12.7 
2026-03-10 00:00 UT   23 57 26.9   -07 15 08     3.966    2.992    9.8    3.2   107   12.7 

    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.