(346) Hermentaria
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	13 Dec 2025	13.4	3.077 AU	3.797 AU	14h52m	-10°04'	37.7°	11.3°
Opposition	21 May 2026	11.5	3.011 AU	2.003 AU	15h59m	-13°31'	173.1°	2.3°

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 Hermentaria are:

            e (Eccentricity)                : 0.1027447
            a (Semimajor axis)              : 2.7949991
            i (Inclination)                 : 8.75798
            Ω (Longitude of ascending node) : 91.84738
            ω (Argument of perihelion)      : 290.70021
            M (Mean anomaly)                : 186.97743
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 22.77076
            B (Latitude of perihelion)      : -8.18857
            P (Orbital period in years)     : 4.67            
        

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
2025-12-13 00:00 UT   14 52 04.1   -10 04 37     3.797    3.077   37.7   11.3   295   13.4 
2025-12-13 15:52 UT   14 52 57.6   -10 08 29     3.791    3.077   38.1   11.4   295   13.4 
2025-12-14 00:00 UT   14 53 25.0   -10 10 28     3.788    3.077   38.3   11.4   295   13.4 
2025-12-15 00:00 UT   14 54 45.7   -10 16 16     3.779    3.077   39.0   11.6   294   13.4 
2025-12-16 00:00 UT   14 56 06.2   -10 21 60     3.770    3.077   39.7   11.8   294   13.4 
2025-12-17 00:00 UT   14 57 26.5   -10 27 40     3.760    3.077   40.3   11.9   294   13.4 
2025-12-18 00:00 UT   14 58 46.7   -10 33 16     3.751    3.076   41.0   12.1   294   13.4 
2025-12-19 00:00 UT   15 00 06.6   -10 38 49     3.741    3.076   41.7   12.3   293   13.4 
2025-12-20 00:00 UT   15 01 26.3   -10 44 17     3.731    3.076   42.3   12.4   293   13.4 
2025-12-21 00:00 UT   15 02 45.8   -10 49 42     3.721    3.076   43.0   12.6   293   13.4 
2025-12-22 00:00 UT   15 04 05.1   -10 55 03     3.711    3.076   43.7   12.8   293   13.4 
2025-12-23 00:00 UT   15 05 24.1   -11 00 20     3.701    3.075   44.3   12.9   292   13.4 
2025-12-24 00:00 UT   15 06 42.9   -11 05 33     3.691    3.075   45.0   13.1   292   13.4 
2025-12-25 00:00 UT   15 08 01.4   -11 10 42     3.680    3.075   45.7   13.2   292   13.4 
2025-12-26 00:00 UT   15 09 19.7   -11 15 47     3.670    3.075   46.4   13.4   292   13.4 
2025-12-27 00:00 UT   15 10 37.7   -11 20 48     3.659    3.075   47.1   13.5   291   13.4 
2025-12-28 00:00 UT   15 11 55.4   -11 25 45     3.648    3.074   47.7   13.7   291   13.4 
2025-12-29 00:00 UT   15 13 12.9   -11 30 38     3.637    3.074   48.4   13.8   291   13.4 
2025-12-30 00:00 UT   15 14 30.0   -11 35 27     3.626    3.074   49.1   14.0   291   13.4 
2025-12-31 00:00 UT   15 15 46.9   -11 40 12     3.615    3.074   49.8   14.1   291   13.4 
2026-01-01 00:00 UT   15 17 03.4   -11 44 53     3.604    3.073   50.5   14.3   290   13.4 
2026-01-02 00:00 UT   15 18 19.7   -11 49 30     3.593    3.073   51.2   14.4   290   13.3 
2026-01-03 00:00 UT   15 19 35.6   -11 54 03     3.581    3.073   51.9   14.6   290   13.3 
2026-01-04 00:00 UT   15 20 51.2   -11 58 31     3.570    3.073   52.6   14.7   290   13.3 
2026-01-05 00:00 UT   15 22 06.5   -12 02 56     3.558    3.072   53.3   14.9   289   13.3 
2026-01-06 00:00 UT   15 23 21.4   -12 07 17     3.546    3.072   53.9   15.0   289   13.3 
2026-01-07 00:00 UT   15 24 36.0   -12 11 34     3.534    3.072   54.6   15.1   289   13.3 

    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.