(129) Antigone
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	13 Jul 2026	13.1	3.220 AU	3.376 AU	02h36m	+04°09'	72.5°	17.5°
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)                : 0.2131575
            a (Semimajor axis)              : 2.8677886
            i (Inclination)                 : 12.27021
            Ω (Longitude of ascending node) : 135.65523
            ω (Argument of perihelion)      : 110.47772
            M (Mean anomaly)                : 108.26566
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 66.57068
            B (Latitude of perihelion)      : 11.48391
            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
2026-07-13 00:00 UT   02 36 34.5   +04 09 38     3.376    3.220   72.5   17.5   248   13.1 
2026-07-13 04:49 UT   02 36 45.5   +04 09 50     3.374    3.220   72.6   17.5   248   13.1 
2026-07-14 00:00 UT   02 37 29.2   +04 10 35     3.364    3.221   73.2   17.6   249   13.1 
2026-07-15 00:00 UT   02 38 23.3   +04 11 26     3.353    3.223   73.9   17.6   249   13.1 
2026-07-16 00:00 UT   02 39 16.7   +04 12 11     3.341    3.224   74.7   17.7   249   13.1 
2026-07-17 00:00 UT   02 40 09.5   +04 12 50     3.329    3.226   75.4   17.7   249   13.1 
2026-07-18 00:00 UT   02 41 01.6   +04 13 24     3.317    3.228   76.1   17.8   249   13.1 
2026-07-19 00:00 UT   02 41 53.1   +04 13 51     3.305    3.229   76.8   17.8   249   13.1 
2026-07-20 00:00 UT   02 42 43.8   +04 14 12     3.293    3.231   77.6   17.9   250   13.1 
2026-07-21 00:00 UT   02 43 33.8   +04 14 27     3.281    3.232   78.3   17.9   250   13.1 
2026-07-22 00:00 UT   02 44 23.2   +04 14 37     3.269    3.234   79.1   18.0   250   13.1 
2026-07-23 00:00 UT   02 45 11.8   +04 14 40     3.257    3.235   79.8   18.0   250   13.1 
2026-07-24 00:00 UT   02 45 59.7   +04 14 38     3.244    3.237   80.6   18.0   250   13.1 
2026-07-25 00:00 UT   02 46 46.8   +04 14 29     3.232    3.238   81.3   18.1   251   13.1 
2026-07-26 00:00 UT   02 47 33.2   +04 14 14     3.220    3.240   82.1   18.1   251   13.0 
2026-07-27 00:00 UT   02 48 18.9   +04 13 53     3.208    3.241   82.8   18.1   251   13.0 
2026-07-28 00:00 UT   02 49 03.7   +04 13 27     3.195    3.243   83.6   18.1   251   13.0 
2026-07-29 00:00 UT   02 49 47.8   +04 12 54     3.183    3.244   84.4   18.1   251   13.0 
2026-07-30 00:00 UT   02 50 31.1   +04 12 14     3.171    3.246   85.1   18.2   252   13.0 
2026-07-31 00:00 UT   02 51 13.6   +04 11 29     3.158    3.247   85.9   18.2   252   13.0 
2026-08-01 00:00 UT   02 51 55.3   +04 10 38     3.146    3.249   86.7   18.2   252   13.0 
2026-08-02 00:00 UT   02 52 36.1   +04 09 40     3.133    3.250   87.5   18.2   252   13.0 
2026-08-03 00:00 UT   02 53 16.1   +04 08 37     3.121    3.252   88.2   18.2   252   13.0 
2026-08-04 00:00 UT   02 53 55.3   +04 07 27     3.108    3.253   89.0   18.2   253   13.0 
2026-08-05 00:00 UT   02 54 33.6   +04 06 11     3.096    3.255   89.8   18.2   253   13.0 
2026-08-06 00:00 UT   02 55 11.0   +04 04 48     3.084    3.256   90.6   18.1   253   13.0 
2026-08-07 00:00 UT   02 55 47.5   +04 03 19     3.071    3.258   91.4   18.1   253   13.0 
2026-08-08 00:00 UT   02 56 23.1   +04 01 44     3.059    3.259   92.2   18.1   253   13.0 
2026-08-09 00:00 UT   02 56 57.7   +04 00 03     3.046    3.261   93.0   18.1   254   12.9 
2026-08-10 00:00 UT   02 57 31.5   +03 58 16     3.034    3.262   93.8   18.1   254   12.9 
2026-08-11 00:00 UT   02 58 04.2   +03 56 22     3.021    3.264   94.6   18.0   254   12.9 
2026-08-12 00:00 UT   02 58 36.1   +03 54 22     3.009    3.265   95.5   18.0   254   12.9 

    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.