(129) Antigone
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	26 Mar 2025	11.9	2.310 AU	2.532 AU	20h01m	-13°12'	65.8°	23.2°
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) : 135.65436
            ω (Argument of perihelion)      : 110.57265
            M (Mean anomaly)                : 27.02675
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 66.66631
            B (Latitude of perihelion)      : 11.47564
            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
2025-03-26 00:00 UT   20 01 06.2   -13 12 48     2.532    2.310   65.8   23.2   262   11.9 
2025-03-26 10:45 UT   20 01 50.5   -13 10 59     2.528    2.310   66.0   23.2   261   11.9 
2025-03-27 00:00 UT   20 02 45.0   -13 08 43     2.522    2.311   66.4   23.3   261   11.9 
2025-03-28 00:00 UT   20 04 23.1   -13 04 37     2.513    2.312   66.9   23.4   261   11.9 
2025-03-29 00:00 UT   20 06 00.5   -13 00 30     2.503    2.313   67.5   23.5   261   11.9 
2025-03-30 00:00 UT   20 07 37.3   -12 56 22     2.493    2.314   68.1   23.6   261   11.9 
2025-03-31 00:00 UT   20 09 13.3   -12 52 13     2.483    2.315   68.7   23.7   260   11.9 
2025-04-01 00:00 UT   20 10 48.6   -12 48 04     2.473    2.316   69.3   23.8   260   11.9 
2025-04-02 00:00 UT   20 12 23.1   -12 43 54     2.463    2.318   69.9   23.9   260   11.9 
2025-04-03 00:00 UT   20 13 57.0   -12 39 44     2.453    2.319   70.4   24.0   260   11.9 
2025-04-04 00:00 UT   20 15 30.0   -12 35 34     2.443    2.320   71.0   24.1   260   11.9 
2025-04-05 00:00 UT   20 17 02.4   -12 31 23     2.433    2.321   71.6   24.1   259   11.9 
2025-04-06 00:00 UT   20 18 33.9   -12 27 13     2.423    2.322   72.2   24.2   259   11.9 
2025-04-07 00:00 UT   20 20 04.7   -12 23 03     2.413    2.323   72.8   24.3   259   11.9 
2025-04-08 00:00 UT   20 21 34.7   -12 18 53     2.403    2.325   73.4   24.4   259   11.9 
2025-04-09 00:00 UT   20 23 04.0   -12 14 44     2.393    2.326   74.0   24.5   258   11.9 
2025-04-10 00:00 UT   20 24 32.4   -12 10 36     2.382    2.327   74.6   24.5   258   11.9 
2025-04-11 00:00 UT   20 26 00.1   -12 06 28     2.372    2.328   75.3   24.6   258   11.9 
2025-04-12 00:00 UT   20 27 26.9   -12 02 21     2.362    2.330   75.9   24.7   258   11.9 
2025-04-13 00:00 UT   20 28 53.0   -11 58 14     2.352    2.331   76.5   24.7   258   11.8 
2025-04-14 00:00 UT   20 30 18.2   -11 54 10     2.341    2.332   77.1   24.8   257   11.8 
2025-04-15 00:00 UT   20 31 42.6   -11 50 06     2.331    2.333   77.7   24.8   257   11.8 
2025-04-16 00:00 UT   20 33 06.1   -11 46 04     2.320    2.335   78.3   24.9   257   11.8 
2025-04-17 00:00 UT   20 34 28.8   -11 42 03     2.310    2.336   79.0   24.9   257   11.8 

    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.