(29) Amphitrite
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	15 Sep 2025	11.4	2.680 AU	3.636 AU	12h25m	-04°09'	15.4°	5.7°
Opposition	28 May 2026	9.7	2.739 AU	1.734 AU	16h15m	-30°32'	170.9°	3.4°

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 Amphitrite are:

            e (Eccentricity)                : 0.0734638
            a (Semimajor axis)              : 2.5539190
            i (Inclination)                 : 6.07775
            Ω (Longitude of ascending node) : 356.25572
            ω (Argument of perihelion)      : 61.88221
            M (Mean anomaly)                : 96.82761
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 58.00348
            B (Latitude of perihelion)      : 5.35822
            P (Orbital period in years)     : 4.08            
        

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
2025-09-15 00:00 UT   12 25 17.3   -04 09 24     3.636    2.680   15.4    5.7   118   11.4 
2025-09-15 14:32 UT   12 26 12.9   -04 15 58     3.638    2.680   15.1    5.6   118   11.4 
2025-09-16 00:00 UT   12 26 49.1   -04 20 14     3.639    2.680   14.9    5.5   118   11.4 
2025-09-17 00:00 UT   12 28 20.9   -04 31 05     3.643    2.681   14.3    5.3   118   11.4 
2025-09-18 00:00 UT   12 29 52.8   -04 41 55     3.647    2.681   13.8    5.1   119   11.3 
2025-09-19 00:00 UT   12 31 24.9   -04 52 45     3.650    2.682   13.2    4.9   119   11.3 
2025-09-20 00:00 UT   12 32 57.0   -05 03 34     3.653    2.682   12.7    4.7   119   11.3 
2025-09-21 00:00 UT   12 34 29.2   -05 14 24     3.656    2.683   12.1    4.5   120   11.3 
2025-09-22 00:00 UT   12 36 01.6   -05 25 13     3.659    2.683   11.6    4.3   120   11.3 
2025-09-23 00:00 UT   12 37 34.0   -05 36 02     3.662    2.684   11.0    4.1   120   11.3 
2025-09-24 00:00 UT   12 39 06.5   -05 46 51     3.665    2.685   10.5    3.9   121   11.3 
2025-09-25 00:00 UT   12 40 39.1   -05 57 39     3.667    2.685    9.9    3.7   121   11.3 
2025-09-26 00:00 UT   12 42 11.8   -06 08 26     3.670    2.686    9.4    3.5   122   11.3 
2025-09-27 00:00 UT   12 43 44.5   -06 19 13     3.672    2.686    8.9    3.3   123   11.3 
2025-09-28 00:00 UT   12 45 17.4   -06 29 60     3.674    2.687    8.3    3.1   123   11.3 
2025-09-29 00:00 UT   12 46 50.3   -06 40 46     3.676    2.687    7.8    2.9   124   11.2 
2025-09-30 00:00 UT   12 48 23.3   -06 51 31     3.678    2.688    7.2    2.7   125   11.2 
2025-10-01 00:00 UT   12 49 56.4   -07 02 16     3.680    2.688    6.7    2.5   126   11.2 
2025-10-02 00:00 UT   12 51 29.5   -07 12 60     3.682    2.689    6.1    2.3   128   11.2 
2025-10-03 00:00 UT   12 53 02.8   -07 23 43     3.683    2.689    5.6    2.1   129   11.2 
2025-10-04 00:00 UT   12 54 36.1   -07 34 25     3.685    2.690    5.1    1.9   131   11.2 
2025-10-05 00:00 UT   12 56 09.5   -07 45 07     3.686    2.690    4.6    1.7   133   11.2 

    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.