(135) Hertha
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Opposition	6 May 2026	11.1	2.386 AU	1.378 AU	14h53m	-20°16'	176.2°	1.6°
Today	10 May 2026	11.1	2.377 AU	1.370 AU	14h49m	-20°02'	175.3°	2.0°

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 Hertha are:

            e (Eccentricity)                : 0.2083719
            a (Semimajor axis)              : 2.4268992
            i (Inclination)                 : 2.30329
            Ω (Longitude of ascending node) : 343.43461
            ω (Argument of perihelion)      : 340.31245
            M (Mean anomaly)                : 243.17605
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 323.76174
            B (Latitude of perihelion)      : -0.77577
            P (Orbital period in years)     : 3.78            
        

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
2026-05-10 00:00 UT   14 49 31.7   -20 02 53     1.370    2.377  175.3    2.0    57   11.1 
2026-05-10 21:17 UT   14 48 36.3   -19 59 23     1.368    2.375  174.5    2.3    66   11.1 
2026-05-11 00:00 UT   14 48 29.2   -19 58 56     1.368    2.375  174.4    2.4    67   11.1 
2026-05-12 00:00 UT   14 47 26.8   -19 54 55     1.367    2.373  173.4    2.8    74   11.2 
2026-05-13 00:00 UT   14 46 24.6   -19 50 51     1.365    2.370  172.4    3.2    79   11.2 
2026-05-14 00:00 UT   14 45 22.7   -19 46 45     1.364    2.368  171.3    3.7    83   11.2 
2026-05-15 00:00 UT   14 44 21.2   -19 42 36     1.364    2.366  170.2    4.2    86   11.2 
2026-05-16 00:00 UT   14 43 20.2   -19 38 25     1.363    2.363  169.0    4.7    88   11.3 
2026-05-17 00:00 UT   14 42 19.8   -19 34 12     1.363    2.361  167.9    5.2    90   11.3 
2026-05-18 00:00 UT   14 41 20.0   -19 29 58     1.363    2.359  166.7    5.7    92   11.3 
2026-05-19 00:00 UT   14 40 21.0   -19 25 43     1.363    2.356  165.6    6.1    93   11.3 
2026-05-20 00:00 UT   14 39 22.7   -19 21 28     1.364    2.354  164.4    6.6    95   11.3 
2026-05-21 00:00 UT   14 38 25.4   -19 17 13     1.365    2.352  163.2    7.1    96   11.4 
2026-05-22 00:00 UT   14 37 29.0   -19 12 58     1.366    2.349  162.1    7.6    97   11.4 
2026-05-23 00:00 UT   14 36 33.6   -19 08 45     1.367    2.347  160.9    8.1    97   11.4 
2026-05-24 00:00 UT   14 35 39.4   -19 04 32     1.368    2.345  159.7    8.6    98   11.4 
2026-05-25 00:00 UT   14 34 46.2   -19 00 22     1.370    2.342  158.6    9.1    99   11.5 
2026-05-26 00:00 UT   14 33 54.4   -18 56 13     1.372    2.340  157.4    9.6    99   11.5 
2026-05-27 00:00 UT   14 33 03.7   -18 52 07     1.374    2.338  156.2   10.1   100   11.5 
2026-05-28 00:00 UT   14 32 14.4   -18 48 03     1.377    2.335  155.1   10.5   100   11.5 
2026-05-29 00:00 UT   14 31 26.5   -18 44 03     1.380    2.333  153.9   11.0   101   11.5 
2026-05-30 00:00 UT   14 30 40.0   -18 40 06     1.383    2.331  152.8   11.5   101   11.6 
2026-05-31 00:00 UT   14 29 55.0   -18 36 13     1.386    2.328  151.7   11.9   102   11.6 
2026-06-01 00:00 UT   14 29 11.6   -18 32 25     1.389    2.326  150.5   12.4   102   11.6 
2026-06-02 00:00 UT   14 28 29.6   -18 28 40     1.393    2.323  149.4   12.8   102   11.6 
2026-06-03 00:00 UT   14 27 49.3   -18 25 01     1.396    2.321  148.3   13.3   103   11.6 
2026-06-04 00:00 UT   14 27 10.6   -18 21 26     1.400    2.319  147.2   13.7   103   11.7 
2026-06-05 00:00 UT   14 26 33.6   -18 17 57     1.404    2.316  146.1   14.1   103   11.7 
2026-06-06 00:00 UT   14 25 58.3   -18 14 34     1.409    2.314  145.0   14.6   104   11.7 
2026-06-07 00:00 UT   14 25 24.7   -18 11 17     1.413    2.312  143.9   15.0   104   11.7 
2026-06-08 00:00 UT   14 24 52.9   -18 08 06     1.418    2.309  142.8   15.4   104   11.7 
2026-06-09 00:00 UT   14 24 22.8   -18 05 01     1.423    2.307  141.7   15.8   104   11.8 

    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.