(516) Amherstia
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	13 Jun 2026	14.4	3.135 AU	3.523 AU	01h11m	+15°11'	59.6°	16.2°
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
2026-06-13 00:00 UT   01 11 30.1   +15 11 24     3.523    3.135   59.6   16.2   252   14.4 
2026-06-13 08:27 UT   01 11 50.0   +15 14 31     3.519    3.136   59.9   16.3   252   14.4 
2026-06-14 00:00 UT   01 12 26.4   +15 20 15     3.513    3.137   60.3   16.3   252   14.4 
2026-06-15 00:00 UT   01 13 22.1   +15 29 03     3.502    3.139   61.0   16.4   252   14.4 
2026-06-16 00:00 UT   01 14 17.3   +15 37 50     3.492    3.141   61.7   16.5   252   14.4 
2026-06-17 00:00 UT   01 15 12.0   +15 46 34     3.481    3.143   62.4   16.6   252   14.4 
2026-06-18 00:00 UT   01 16 06.1   +15 55 15     3.471    3.145   63.1   16.7   251   14.4 
2026-06-19 00:00 UT   01 16 59.7   +16 03 55     3.460    3.146   63.8   16.8   251   14.4 
2026-06-20 00:00 UT   01 17 52.7   +16 12 32     3.449    3.148   64.5   16.9   251   14.4 
2026-06-21 00:00 UT   01 18 45.1   +16 21 06     3.439    3.150   65.2   17.0   251   14.4 
2026-06-22 00:00 UT   01 19 36.9   +16 29 38     3.428    3.152   65.9   17.1   251   14.4 
2026-06-23 00:00 UT   01 20 28.1   +16 38 08     3.417    3.154   66.6   17.2   251   14.4 
2026-06-24 00:00 UT   01 21 18.7   +16 46 35     3.405    3.156   67.3   17.3   251   14.4 
2026-06-25 00:00 UT   01 22 08.7   +16 55 00     3.394    3.158   68.0   17.4   251   14.4 
2026-06-26 00:00 UT   01 22 58.0   +17 03 23     3.383    3.160   68.7   17.4   251   14.4 
2026-06-27 00:00 UT   01 23 46.8   +17 11 42     3.372    3.161   69.4   17.5   251   14.4 
2026-06-28 00:00 UT   01 24 34.9   +17 19 60     3.360    3.163   70.2   17.6   251   14.4 
2026-06-29 00:00 UT   01 25 22.3   +17 28 15     3.349    3.165   70.9   17.7   251   14.4 
2026-06-30 00:00 UT   01 26 09.1   +17 36 27     3.337    3.167   71.6   17.7   251   14.4 
2026-07-01 00:00 UT   01 26 55.2   +17 44 36     3.326    3.169   72.3   17.8   251   14.4 
2026-07-02 00:00 UT   01 27 40.6   +17 52 43     3.314    3.171   73.1   17.9   251   14.4 
2026-07-03 00:00 UT   01 28 25.3   +18 00 48     3.302    3.172   73.8   17.9   251   14.4 
2026-07-04 00:00 UT   01 29 09.3   +18 08 49     3.291    3.174   74.5   18.0   250   14.4 
2026-07-05 00:00 UT   01 29 52.6   +18 16 48     3.279    3.176   75.3   18.0   250   14.4 
2026-07-06 00:00 UT   01 30 35.1   +18 24 44     3.267    3.178   76.0   18.1   250   14.4 
2026-07-07 00:00 UT   01 31 16.9   +18 32 37     3.255    3.180   76.7   18.1   250   14.4 
2026-07-08 00:00 UT   01 31 58.0   +18 40 28     3.243    3.181   77.5   18.2   250   14.4 
2026-07-09 00:00 UT   01 32 38.2   +18 48 15     3.231    3.183   78.2   18.2   250   14.4 
2026-07-10 00:00 UT   01 33 17.7   +18 55 60     3.219    3.185   79.0   18.3   250   14.3 
2026-07-11 00:00 UT   01 33 56.4   +19 03 42     3.207    3.187   79.7   18.3   250   14.3 
2026-07-12 00:00 UT   01 34 34.2   +19 11 20     3.195    3.189   80.5   18.3   250   14.3 
2026-07-13 00:00 UT   01 35 11.3   +19 18 56     3.182    3.190   81.3   18.4   250   14.3 

    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.