(129) Antigone
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	11 Sep 2026	12.6	3.306 AU	2.661 AU	03h06m	+02°08'	122.0°	15.0°
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
2026-09-11 00:00 UT   03 06 06.1   +02 08 11     2.661    3.306  122.0   15.0   263   12.6 
2026-09-11 07:03 UT   03 06 05.3   +02 06 45     2.658    3.307  122.3   14.9   263   12.6 
2026-09-12 00:00 UT   03 06 02.7   +02 03 15     2.650    3.308  123.0   14.8   263   12.6 
2026-09-13 00:00 UT   03 05 58.0   +01 58 15     2.640    3.309  123.9   14.6   264   12.5 
2026-09-14 00:00 UT   03 05 52.1   +01 53 11     2.631    3.310  124.9   14.4   264   12.5 
2026-09-15 00:00 UT   03 05 44.8   +01 48 02     2.621    3.312  125.8   14.3   265   12.5 
2026-09-16 00:00 UT   03 05 36.3   +01 42 50     2.611    3.313  126.8   14.1   265   12.5 
2026-09-17 00:00 UT   03 05 26.6   +01 37 34     2.602    3.314  127.8   13.9   266   12.5 
2026-09-18 00:00 UT   03 05 15.6   +01 32 14     2.593    3.315  128.7   13.7   266   12.5 
2026-09-19 00:00 UT   03 05 03.3   +01 26 50     2.583    3.317  129.7   13.5   267   12.5 
2026-09-20 00:00 UT   03 04 49.8   +01 21 24     2.575    3.318  130.7   13.3   267   12.4 
2026-09-21 00:00 UT   03 04 35.0   +01 15 54     2.566    3.319  131.7   13.1   268   12.4 
2026-09-22 00:00 UT   03 04 19.0   +01 10 22     2.557    3.321  132.7   12.8   268   12.4 
2026-09-23 00:00 UT   03 04 01.8   +01 04 47     2.549    3.322  133.6   12.6   269   12.4 
2026-09-24 00:00 UT   03 03 43.4   +00 59 09     2.541    3.323  134.6   12.4   269   12.4 
2026-09-25 00:00 UT   03 03 23.7   +00 53 29     2.533    3.324  135.6   12.2   270   12.4 
2026-09-26 00:00 UT   03 03 02.8   +00 47 47     2.525    3.325  136.6   12.0   271   12.4 
2026-09-27 00:00 UT   03 02 40.8   +00 42 03     2.517    3.327  137.6   11.7   271   12.3 
2026-09-28 00:00 UT   03 02 17.5   +00 36 17     2.510    3.328  138.6   11.5   272   12.3 
2026-09-29 00:00 UT   03 01 53.1   +00 30 30     2.503    3.329  139.6   11.3   273   12.3 
2026-09-30 00:00 UT   03 01 27.5   +00 24 41     2.496    3.330  140.5   11.0   274   12.3 
2026-10-01 00:00 UT   03 01 00.8   +00 18 51     2.489    3.332  141.5   10.8   274   12.3 
2026-10-02 00:00 UT   03 00 32.9   +00 13 01     2.482    3.333  142.5   10.5   275   12.3 
2026-10-03 00:00 UT   03 00 04.0   +00 07 10     2.476    3.334  143.5   10.3   276   12.3 
2026-10-04 00:00 UT   02 59 33.9   +00 01 19     2.470    3.335  144.5   10.0   277   12.2 
2026-10-05 00:00 UT   02 59 02.8   +00 04 33     2.464    3.336  145.5    9.8   278   12.2 
2026-10-06 00:00 UT   02 58 30.5   +00 10 24     2.458    3.338  146.4    9.5   279   12.2 
2026-10-07 00:00 UT   02 57 57.3   +00 16 15     2.453    3.339  147.4    9.3   280   12.2 
2026-10-08 00:00 UT   02 57 23.1   +00 22 04     2.448    3.340  148.3    9.0   281   12.2 
2026-10-09 00:00 UT   02 56 47.8   +00 27 53     2.443    3.341  149.3    8.8   283   12.2 
2026-10-10 00:00 UT   02 56 11.6   +00 33 40     2.438    3.342  150.2    8.5   284   12.2 
2026-10-11 00:00 UT   02 55 34.5   +00 39 26     2.434    3.344  151.2    8.3   285   12.1 

    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.