(346) Hermentaria
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Opposition	21 May 2026	11.5	3.011 AU	2.003 AU	15h59m	-13°31'	173.1°	2.3°
Today	29 Jun 2026	12.1	2.984 AU	2.160 AU	15h31m	-13°53'	136.8°	13.5°

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 Hermentaria are:

            e (Eccentricity)                : 0.1025553
            a (Semimajor axis)              : 2.7955455
            i (Inclination)                 : 8.75772
            Ω (Longitude of ascending node) : 91.84899
            ω (Argument of perihelion)      : 290.64483
            M (Mean anomaly)                : 229.21118
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 22.71649
            B (Latitude of perihelion)      : -8.19133
            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
2026-06-29 00:00 UT   15 31 35.4   -13 53 24     2.160    2.984  136.8   13.5   109   12.1 
2026-06-29 21:12 UT   15 31 14.3   -13 55 12     2.168    2.983  135.9   13.7   109   12.2 
2026-06-30 00:00 UT   15 31 11.6   -13 55 27     2.169    2.983  135.8   13.7   109   12.2 
2026-07-01 00:00 UT   15 30 49.1   -13 57 35     2.177    2.982  134.8   14.0   109   12.2 
2026-07-02 00:00 UT   15 30 28.0   -13 59 48     2.186    2.981  133.8   14.3   109   12.2 
2026-07-03 00:00 UT   15 30 08.3   -14 02 05     2.196    2.981  132.8   14.5   109   12.2 
2026-07-04 00:00 UT   15 29 49.9   -14 04 27     2.205    2.980  131.8   14.7   108   12.2 
2026-07-05 00:00 UT   15 29 33.0   -14 06 54     2.214    2.979  130.8   15.0   108   12.2 
2026-07-06 00:00 UT   15 29 17.4   -14 09 26     2.224    2.978  129.8   15.2   108   12.3 
2026-07-07 00:00 UT   15 29 03.2   -14 12 02     2.234    2.978  128.8   15.4   108   12.3 
2026-07-08 00:00 UT   15 28 50.5   -14 14 42     2.243    2.977  127.8   15.7   108   12.3 
2026-07-09 00:00 UT   15 28 39.1   -14 17 28     2.254    2.976  126.8   15.9   108   12.3 
2026-07-10 00:00 UT   15 28 29.1   -14 20 18     2.264    2.975  125.8   16.1   107   12.3 
2026-07-11 00:00 UT   15 28 20.6   -14 23 12     2.274    2.975  124.9   16.3   107   12.3 
2026-07-12 00:00 UT   15 28 13.5   -14 26 11     2.285    2.974  123.9   16.5   107   12.4 
2026-07-13 00:00 UT   15 28 07.7   -14 29 14     2.295    2.973  122.9   16.7   107   12.4 
2026-07-14 00:00 UT   15 28 03.4   -14 32 22     2.306    2.972  122.0   16.9   107   12.4 
2026-07-15 00:00 UT   15 28 00.6   -14 35 34     2.317    2.971  121.0   17.0   107   12.4 
2026-07-16 00:00 UT   15 27 59.1   -14 38 50     2.328    2.971  120.1   17.2   107   12.4 
2026-07-17 00:00 UT   15 27 59.0   -14 42 10     2.339    2.970  119.2   17.4   106   12.4 
2026-07-18 00:00 UT   15 28 00.4   -14 45 35     2.350    2.969  118.2   17.6   106   12.5 
2026-07-19 00:00 UT   15 28 03.1   -14 49 03     2.361    2.968  117.3   17.7   106   12.5 
2026-07-20 00:00 UT   15 28 07.2   -14 52 35     2.373    2.967  116.4   17.9   106   12.5 
2026-07-21 00:00 UT   15 28 12.7   -14 56 12     2.384    2.967  115.5   18.0   106   12.5 
2026-07-22 00:00 UT   15 28 19.6   -14 59 52     2.396    2.966  114.6   18.2   106   12.5 
2026-07-23 00:00 UT   15 28 27.9   -15 03 36     2.407    2.965  113.7   18.3   106   12.5 
2026-07-24 00:00 UT   15 28 37.5   -15 07 23     2.419    2.964  112.8   18.4   106   12.5 
2026-07-25 00:00 UT   15 28 48.4   -15 11 14     2.431    2.963  111.9   18.5   106   12.6 
2026-07-26 00:00 UT   15 29 00.7   -15 15 09     2.443    2.963  111.0   18.7   105   12.6 
2026-07-27 00:00 UT   15 29 14.3   -15 19 07     2.455    2.962  110.1   18.8   105   12.6 
2026-07-28 00:00 UT   15 29 29.2   -15 23 08     2.467    2.961  109.2   18.9   105   12.6 
2026-07-29 00:00 UT   15 29 45.4   -15 27 12     2.479    2.960  108.4   19.0   105   12.6 

    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.