(346) Hermentaria
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	24 Oct 2025	13.1	3.082 AU	4.064 AU	13h42m	-04°03'	8.0°	2.6°
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)                : 186.97744
            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
2025-10-24 00:00 UT   13 42 53.8   -04 03 06     4.064    3.082    8.0    2.6   341   13.1 
2025-10-24 13:26 UT   13 43 40.4   -04 07 46     4.063    3.082    8.3    2.7   339   13.1 
2025-10-25 00:00 UT   13 44 17.1   -04 11 26     4.062    3.082    8.4    2.7   338   13.1 
2025-10-26 00:00 UT   13 45 40.4   -04 19 44     4.061    3.082    8.9    2.8   335   13.1 
2025-10-27 00:00 UT   13 47 03.8   -04 27 59     4.059    3.082    9.3    3.0   332   13.1 
2025-10-28 00:00 UT   13 48 27.3   -04 36 13     4.057    3.082    9.8    3.1   329   13.1 
2025-10-29 00:00 UT   13 49 50.7   -04 44 24     4.054    3.082   10.3    3.3   327   13.1 
2025-10-30 00:00 UT   13 51 14.2   -04 52 33     4.052    3.082   10.8    3.5   325   13.1 
2025-10-31 00:00 UT   13 52 37.7   -05 00 39     4.049    3.082   11.3    3.6   323   13.1 
2025-11-01 00:00 UT   13 54 01.3   -05 08 43     4.047    3.082   11.8    3.8   321   13.2 
2025-11-02 00:00 UT   13 55 24.8   -05 16 45     4.044    3.082   12.4    4.0   320   13.2 
2025-11-03 00:00 UT   13 56 48.4   -05 24 44     4.041    3.082   12.9    4.1   318   13.2 
2025-11-04 00:00 UT   13 58 12.0   -05 32 41     4.038    3.082   13.5    4.3   317   13.2 
2025-11-05 00:00 UT   13 59 35.6   -05 40 35     4.034    3.082   14.0    4.5   316   13.2 
2025-11-06 00:00 UT   14 00 59.2   -05 48 27     4.031    3.082   14.6    4.6   314   13.2 
2025-11-07 00:00 UT   14 02 22.8   -05 56 16     4.027    3.082   15.2    4.8   313   13.2 
2025-11-08 00:00 UT   14 03 46.4   -06 04 03     4.023    3.082   15.7    5.0   312   13.2 
2025-11-09 00:00 UT   14 05 10.1   -06 11 47     4.020    3.081   16.3    5.2   311   13.2 
2025-11-10 00:00 UT   14 06 33.7   -06 19 28     4.015    3.081   16.9    5.4   310   13.2 
2025-11-11 00:00 UT   14 07 57.3   -06 27 07     4.011    3.081   17.5    5.5   310   13.2 
2025-11-12 00:00 UT   14 09 20.9   -06 34 43     4.007    3.081   18.1    5.7   309   13.2 
2025-11-13 00:00 UT   14 10 44.6   -06 42 16     4.002    3.081   18.7    5.9   308   13.2 
2025-11-14 00:00 UT   14 12 08.2   -06 49 47     3.998    3.081   19.3    6.1   307   13.2 
2025-11-15 00:00 UT   14 13 31.7   -06 57 14     3.993    3.081   19.9    6.3   307   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.