(346) Hermentaria
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	22 Jan 2026	13.3	3.068 AU	3.344 AU	15h42m	-13°07'	65.4°	17.0°
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
2026-01-22 00:00 UT   15 42 25.4   -13 07 28     3.344    3.068   65.4   17.0   286   13.3 
2026-01-22 06:46 UT   15 42 44.5   -13 08 22     3.341    3.068   65.6   17.0   286   13.3 
2026-01-23 00:00 UT   15 43 32.9   -13 10 38     3.331    3.067   66.1   17.1   286   13.3 
2026-01-24 00:00 UT   15 44 39.8   -13 13 44     3.318    3.067   66.8   17.2   286   13.3 
2026-01-25 00:00 UT   15 45 46.3   -13 16 46     3.304    3.067   67.6   17.3   285   13.3 
2026-01-26 00:00 UT   15 46 52.1   -13 19 44     3.291    3.067   68.3   17.4   285   13.3 
2026-01-27 00:00 UT   15 47 57.4   -13 22 38     3.277    3.066   69.1   17.5   285   13.2 
2026-01-28 00:00 UT   15 49 02.1   -13 25 27     3.263    3.066   69.8   17.5   285   13.2 
2026-01-29 00:00 UT   15 50 06.2   -13 28 13     3.250    3.066   70.5   17.6   285   13.2 
2026-01-30 00:00 UT   15 51 09.7   -13 30 54     3.236    3.065   71.3   17.7   285   13.2 
2026-01-31 00:00 UT   15 52 12.6   -13 33 32     3.222    3.065   72.0   17.8   284   13.2 
2026-02-01 00:00 UT   15 53 14.9   -13 36 05     3.208    3.065   72.8   17.9   284   13.2 
2026-02-02 00:00 UT   15 54 16.5   -13 38 34     3.194    3.064   73.6   18.0   284   13.2 
2026-02-03 00:00 UT   15 55 17.5   -13 40 60     3.180    3.064   74.3   18.0   284   13.2 
2026-02-04 00:00 UT   15 56 17.9   -13 43 21     3.166    3.064   75.1   18.1   284   13.2 
2026-02-05 00:00 UT   15 57 17.5   -13 45 38     3.152    3.063   75.8   18.2   283   13.2 
2026-02-06 00:00 UT   15 58 16.5   -13 47 52     3.137    3.063   76.6   18.3   283   13.2 
2026-02-07 00:00 UT   15 59 14.7   -13 50 01     3.123    3.063   77.4   18.3   283   13.2 
2026-02-08 00:00 UT   16 00 12.3   -13 52 06     3.109    3.062   78.1   18.4   283   13.2 
2026-02-09 00:00 UT   16 01 09.1   -13 54 08     3.094    3.062   78.9   18.4   283   13.2 
2026-02-10 00:00 UT   16 02 05.2   -13 56 05     3.080    3.062   79.7   18.5   283   13.1 
2026-02-11 00:00 UT   16 03 00.5   -13 57 58     3.066    3.061   80.5   18.5   282   13.1 
2026-02-12 00:00 UT   16 03 55.1   -13 59 48     3.051    3.061   81.3   18.6   282   13.1 
2026-02-13 00:00 UT   16 04 48.8   -14 01 34     3.037    3.060   82.0   18.6   282   13.1 
2026-02-14 00:00 UT   16 05 41.7   -14 03 15     3.022    3.060   82.8   18.7   282   13.1 
2026-02-15 00:00 UT   16 06 33.9   -14 04 53     3.008    3.060   83.6   18.7   282   13.1 
2026-02-16 00:00 UT   16 07 25.2   -14 06 27     2.993    3.059   84.4   18.7   282   13.1 
2026-02-17 00:00 UT   16 08 15.6   -14 07 57     2.979    3.059   85.2   18.8   281   13.1 
2026-02-18 00:00 UT   16 09 05.1   -14 09 24     2.964    3.059   86.0   18.8   281   13.1 
2026-02-19 00:00 UT   16 09 53.8   -14 10 46     2.949    3.058   86.8   18.8   281   13.1 
2026-02-20 00:00 UT   16 10 41.6   -14 12 05     2.935    3.058   87.6   18.8   281   13.0 
2026-02-21 00:00 UT   16 11 28.5   -14 13 21     2.920    3.057   88.4   18.9   281   13.0 

    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.