(516) Amherstia
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	13 May 2026	14.4	3.072 AU	3.787 AU	00h38m	+10°20'	39.3°	12.0°
Opposition	18 Oct 2026	13.2	3.329 AU	2.358 AU	01h07m	+23°48'	164.6°	4.5°

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 Amherstia are:

            e (Eccentricity)                : 0.2756250
            a (Semimajor axis)              : 2.6777276
            i (Inclination)                 : 12.95476
            Ω (Longitude of ascending node) : 328.71146
            ω (Argument of perihelion)      : 258.05399
            M (Mean anomaly)                : 69.99126
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 46.46276
            B (Latitude of perihelion)      : -12.66948
            P (Orbital period in years)     : 4.38            
        

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
2026-05-13 00:00 UT   00 38 48.6   +10 20 48     3.787    3.072   39.3   12.0   254   14.4 
2026-05-13 15:01 UT   00 39 31.7   +10 26 57     3.782    3.073   39.7   12.1   254   14.4 
2026-05-14 00:00 UT   00 39 57.4   +10 30 37     3.780    3.074   39.9   12.2   254   14.4 
2026-05-15 00:00 UT   00 41 06.0   +10 40 24     3.773    3.076   40.5   12.3   254   14.4 
2026-05-16 00:00 UT   00 42 14.2   +10 50 10     3.766    3.078   41.2   12.5   254   14.4 
2026-05-17 00:00 UT   00 43 22.1   +10 59 55     3.759    3.080   41.8   12.6   253   14.4 
2026-05-18 00:00 UT   00 44 29.7   +11 09 37     3.752    3.082   42.5   12.8   253   14.4 
2026-05-19 00:00 UT   00 45 36.9   +11 19 18     3.744    3.084   43.1   13.0   253   14.4 
2026-05-20 00:00 UT   00 46 43.8   +11 28 58     3.737    3.086   43.7   13.1   253   14.4 
2026-05-21 00:00 UT   00 47 50.3   +11 38 35     3.729    3.089   44.4   13.3   253   14.4 
2026-05-22 00:00 UT   00 48 56.5   +11 48 11     3.722    3.091   45.0   13.4   253   14.4 
2026-05-23 00:00 UT   00 50 02.3   +11 57 45     3.714    3.093   45.7   13.5   253   14.4 
2026-05-24 00:00 UT   00 51 07.7   +12 07 17     3.706    3.095   46.3   13.7   253   14.4 
2026-05-25 00:00 UT   00 52 12.7   +12 16 48     3.698    3.097   47.0   13.8   253   14.4 
2026-05-26 00:00 UT   00 53 17.4   +12 26 16     3.690    3.099   47.6   14.0   253   14.4 
2026-05-27 00:00 UT   00 54 21.7   +12 35 43     3.681    3.101   48.3   14.1   253   14.4 
2026-05-28 00:00 UT   00 55 25.6   +12 45 08     3.673    3.103   48.9   14.3   253   14.4 
2026-05-29 00:00 UT   00 56 29.1   +12 54 31     3.664    3.105   49.6   14.4   253   14.4 
2026-05-30 00:00 UT   00 57 32.2   +13 03 52     3.656    3.107   50.3   14.5   253   14.4 
2026-05-31 00:00 UT   00 58 34.9   +13 13 12     3.647    3.109   50.9   14.7   252   14.4 
2026-06-01 00:00 UT   00 59 37.2   +13 22 29     3.638    3.111   51.6   14.8   252   14.4 
2026-06-02 00:00 UT   01 00 39.1   +13 31 45     3.629    3.113   52.2   14.9   252   14.4 
2026-06-03 00:00 UT   01 01 40.5   +13 40 58     3.620    3.115   52.9   15.1   252   14.4 
2026-06-04 00:00 UT   01 02 41.5   +13 50 10     3.611    3.117   53.6   15.2   252   14.4 
2026-06-05 00:00 UT   01 03 42.1   +13 59 20     3.601    3.119   54.2   15.3   252   14.4 
2026-06-06 00:00 UT   01 04 42.3   +14 08 27     3.592    3.121   54.9   15.4   252   14.4 
2026-06-07 00:00 UT   01 05 42.0   +14 17 33     3.582    3.123   55.6   15.5   252   14.4 
2026-06-08 00:00 UT   01 06 41.2   +14 26 37     3.573    3.125   56.3   15.7   252   14.4 
2026-06-09 00:00 UT   01 07 39.9   +14 35 38     3.563    3.127   56.9   15.8   252   14.4 

    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.