(129) Antigone
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	2 Jul 2025	10.8	2.458 AU	1.588 AU	21h22m	-11°21'	140.5°	15.3°
Opposition	5 Aug 2025	10.0	2.526 AU	1.512 AU	21h01m	-15°58'	179.0°	0.4°

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)                : 0.2130847
            a (Semimajor axis)              : 2.8687790
            i (Inclination)                 : 12.26909
            Ω (Longitude of ascending node) : 135.65437
            ω (Argument of perihelion)      : 110.57264
            M (Mean anomaly)                : 27.02675
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 66.66631
            B (Latitude of perihelion)      : 11.47565
            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. A more printer-friendly version of the same chart can be found below.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2025-07-02 00:00 UT   21 22 20.4   -11 21 27     1.588    2.458  140.5   15.3   247   10.8 
2025-07-02 02:49 UT   21 22 18.3   -11 22 07     1.587    2.459  140.6   15.2   247   10.8 
2025-07-03 00:00 UT   21 22 02.4   -11 27 18     1.582    2.460  141.5   14.9   247   10.8 
2025-07-04 00:00 UT   21 21 43.0   -11 33 19     1.576    2.462  142.6   14.5   247   10.8 
2025-07-05 00:00 UT   21 21 22.1   -11 39 32     1.570    2.464  143.7   14.1   247   10.8 
2025-07-06 00:00 UT   21 20 59.8   -11 45 55     1.565    2.466  144.7   13.8   247   10.7 
2025-07-07 00:00 UT   21 20 36.0   -11 52 28     1.560    2.468  145.8   13.4   247   10.7 
2025-07-08 00:00 UT   21 20 10.8   -11 59 11     1.555    2.470  146.9   13.0   247   10.7 
2025-07-09 00:00 UT   21 19 44.3   -12 06 04     1.550    2.472  148.0   12.6   247   10.7 
2025-07-10 00:00 UT   21 19 16.3   -12 13 07     1.546    2.474  149.1   12.2   247   10.7 
2025-07-11 00:00 UT   21 18 47.1   -12 20 19     1.541    2.476  150.2   11.8   247   10.6 
2025-07-12 00:00 UT   21 18 16.6   -12 27 40     1.537    2.477  151.3   11.4   247   10.6 
2025-07-13 00:00 UT   21 17 44.7   -12 35 10     1.533    2.479  152.4   10.9   247   10.6 
2025-07-14 00:00 UT   21 17 11.7   -12 42 49     1.530    2.481  153.6   10.5   247   10.6 
2025-07-15 00:00 UT   21 16 37.5   -12 50 36     1.526    2.483  154.7   10.1   246   10.6 
2025-07-16 00:00 UT   21 16 02.1   -12 58 31     1.523    2.485  155.8    9.6   246   10.5 
2025-07-17 00:00 UT   21 15 25.5   -13 06 33     1.520    2.487  156.9    9.2   246   10.5 
2025-07-18 00:00 UT   21 14 47.9   -13 14 43     1.517    2.489  158.1    8.8   246   10.5 
2025-07-19 00:00 UT   21 14 09.3   -13 22 60     1.515    2.491  159.2    8.3   246   10.5 
2025-07-20 00:00 UT   21 13 29.6   -13 31 23     1.512    2.493  160.4    7.9   246   10.4 
2025-07-21 00:00 UT   21 12 49.1   -13 39 52     1.510    2.495  161.5    7.4   246   10.4 
2025-07-22 00:00 UT   21 12 07.6   -13 48 27     1.509    2.497  162.7    7.0   246   10.4 
2025-07-23 00:00 UT   21 11 25.3   -13 57 08     1.507    2.499  163.9    6.5   245   10.4 
2025-07-24 00:00 UT   21 10 42.2   -14 05 53     1.506    2.501  165.0    6.0   245   10.4 
2025-07-25 00:00 UT   21 09 58.4   -14 14 43     1.505    2.503  166.2    5.6   245   10.3 
2025-07-26 00:00 UT   21 09 13.9   -14 23 36     1.504    2.505  167.4    5.1   244   10.3 
2025-07-27 00:00 UT   21 08 28.9   -14 32 33     1.503    2.507  168.5    4.6   244   10.3 
2025-07-28 00:00 UT   21 07 43.3   -14 41 33     1.503    2.509  169.7    4.1   244   10.3 
2025-07-29 00:00 UT   21 06 57.2   -14 50 35     1.503    2.511  170.9    3.7   243   10.2 
2025-07-30 00:00 UT   21 06 10.8   -14 59 39     1.503    2.513  172.1    3.2   242   10.2 
2025-07-31 00:00 UT   21 05 24.0   -15 08 45     1.504    2.515  173.2    2.7   241   10.2 
2025-08-01 00:00 UT   21 04 36.9   -15 17 51     1.505    2.517  174.4    2.3   239   10.2 

    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.