(129) Antigone
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	12 Aug 2026	12.9	3.265 AU	3.009 AU	02h58m	+03°54'	95.5°	18.0°
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
2026-08-12 00:00 UT   02 58 36.1   +03 54 22     3.009    3.265   95.5   18.0   254   12.9 
2026-08-12 05:13 UT   02 58 42.8   +03 53 55     3.006    3.265   95.6   18.0   254   12.9 
2026-08-13 00:00 UT   02 59 06.9   +03 52 15     2.996    3.267   96.3   18.0   255   12.9 
2026-08-14 00:00 UT   02 59 36.7   +03 50 03     2.984    3.268   97.1   17.9   255   12.9 
2026-08-15 00:00 UT   03 00 05.6   +03 47 44     2.972    3.269   97.9   17.9   255   12.9 
2026-08-16 00:00 UT   03 00 33.4   +03 45 19     2.959    3.271   98.8   17.8   255   12.9 
2026-08-17 00:00 UT   03 01 00.2   +03 42 47     2.947    3.272   99.6   17.8   256   12.9 
2026-08-18 00:00 UT   03 01 25.9   +03 40 10     2.935    3.274  100.5   17.7   256   12.9 
2026-08-19 00:00 UT   03 01 50.7   +03 37 26     2.923    3.275  101.3   17.6   256   12.8 
2026-08-20 00:00 UT   03 02 14.3   +03 34 37     2.910    3.277  102.2   17.6   256   12.8 
2026-08-21 00:00 UT   03 02 36.9   +03 31 41     2.898    3.278  103.0   17.5   257   12.8 
2026-08-22 00:00 UT   03 02 58.4   +03 28 39     2.886    3.279  103.9   17.4   257   12.8 
2026-08-23 00:00 UT   03 03 18.8   +03 25 32     2.874    3.281  104.7   17.3   257   12.8 
2026-08-24 00:00 UT   03 03 38.1   +03 22 18     2.862    3.282  105.6   17.3   257   12.8 
2026-08-25 00:00 UT   03 03 56.3   +03 18 58     2.850    3.283  106.5   17.2   258   12.8 
2026-08-26 00:00 UT   03 04 13.4   +03 15 33     2.838    3.285  107.4   17.1   258   12.8 
2026-08-27 00:00 UT   03 04 29.4   +03 12 02     2.827    3.286  108.2   17.0   258   12.8 
2026-08-28 00:00 UT   03 04 44.2   +03 08 25     2.815    3.288  109.1   16.9   258   12.7 
2026-08-29 00:00 UT   03 04 57.8   +03 04 42     2.803    3.289  110.0   16.8   259   12.7 
2026-08-30 00:00 UT   03 05 10.3   +03 00 53     2.792    3.290  110.9   16.7   259   12.7 
2026-08-31 00:00 UT   03 05 21.6   +02 56 59     2.780    3.292  111.8   16.5   259   12.7 
2026-09-01 00:00 UT   03 05 31.8   +02 52 60     2.769    3.293  112.7   16.4   260   12.7 
2026-09-02 00:00 UT   03 05 40.7   +02 48 54     2.758    3.294  113.6   16.3   260   12.7 
2026-09-03 00:00 UT   03 05 48.5   +02 44 44     2.746    3.296  114.5   16.2   260   12.7 
2026-09-04 00:00 UT   03 05 55.0   +02 40 27     2.735    3.297  115.5   16.0   261   12.7 
2026-09-05 00:00 UT   03 06 00.3   +02 36 06     2.724    3.298  116.4   15.9   261   12.7 
2026-09-06 00:00 UT   03 06 04.4   +02 31 39     2.713    3.300  117.3   15.8   261   12.6 
2026-09-07 00:00 UT   03 06 07.3   +02 27 08     2.703    3.301  118.2   15.6   262   12.6 
2026-09-08 00:00 UT   03 06 08.9   +02 22 31     2.692    3.302  119.2   15.5   262   12.6 
2026-09-09 00:00 UT   03 06 09.2   +02 17 49     2.681    3.304  120.1   15.3   262   12.6 
2026-09-10 00:00 UT   03 06 08.3   +02 13 02     2.671    3.305  121.1   15.1   263   12.6 
2026-09-11 00:00 UT   03 06 06.1   +02 08 11     2.661    3.306  122.0   15.0   263   12.6 

    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.