(135) Hertha
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	11 May 2025	14.0	2.924 AU	2.888 AU	08h59m	+17°34'	82.0°	20.0°
Opposition	6 May 2026	11.1	2.386 AU	1.378 AU	14h53m	-20°15'	176.2°	1.6°

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)                : 0.2083060
            a (Semimajor axis)              : 2.4269043
            i (Inclination)                 : 2.30328
            Ω (Longitude of ascending node) : 343.43494
            ω (Argument of perihelion)      : 340.33515
            M (Mean anomaly)                : 191.00129
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 323.78476
            B (Latitude of perihelion)      : -0.77491
            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. A more printer-friendly version of the same chart can be found below.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2025-05-11 00:00 UT   08 59 13.5   +17 34 12     2.888    2.924   82.0   20.0   106   14.0 
2025-05-11 15:06 UT   08 59 44.8   +17 31 40     2.897    2.924   81.5   20.0   106   14.0 
2025-05-12 00:00 UT   09 00 03.4   +17 30 10     2.902    2.924   81.2   20.0   106   14.0 
2025-05-13 00:00 UT   09 00 54.0   +17 26 03     2.915    2.923   80.5   19.9   106   14.0 
2025-05-14 00:00 UT   09 01 45.4   +17 21 52     2.929    2.923   79.7   19.9   106   14.0 
2025-05-15 00:00 UT   09 02 37.6   +17 17 37     2.942    2.923   79.0   19.8   106   14.0 
2025-05-16 00:00 UT   09 03 30.5   +17 13 19     2.955    2.922   78.3   19.8   107   14.0 
2025-05-17 00:00 UT   09 04 24.2   +17 08 56     2.969    2.922   77.5   19.7   107   14.0 
2025-05-18 00:00 UT   09 05 18.6   +17 04 30     2.982    2.922   76.8   19.7   107   14.0 
2025-05-19 00:00 UT   09 06 13.7   +16 59 60     2.995    2.921   76.0   19.6   107   14.0 
2025-05-20 00:00 UT   09 07 09.6   +16 55 25     3.008    2.921   75.3   19.6   107   14.0 
2025-05-21 00:00 UT   09 08 06.1   +16 50 48     3.021    2.920   74.6   19.5   107   14.0 
2025-05-22 00:00 UT   09 09 03.3   +16 46 06     3.034    2.920   73.9   19.5   107   14.0 
2025-05-23 00:00 UT   09 10 01.2   +16 41 20     3.047    2.919   73.2   19.4   107   14.0 
2025-05-24 00:00 UT   09 10 59.7   +16 36 31     3.060    2.919   72.4   19.3   107   14.1 
2025-05-25 00:00 UT   09 11 58.9   +16 31 37     3.073    2.919   71.7   19.2   107   14.1 
2025-05-26 00:00 UT   09 12 58.7   +16 26 40     3.086    2.918   71.0   19.2   107   14.1 
2025-05-27 00:00 UT   09 13 59.1   +16 21 39     3.099    2.918   70.3   19.1   107   14.1 
2025-05-28 00:00 UT   09 15 00.1   +16 16 35     3.111    2.917   69.6   19.0   107   14.1 
2025-05-29 00:00 UT   09 16 01.8   +16 11 26     3.124    2.917   68.9   18.9   107   14.1 
2025-05-30 00:00 UT   09 17 04.0   +16 06 14     3.136    2.916   68.2   18.8   107   14.1 
2025-05-31 00:00 UT   09 18 06.8   +16 00 58     3.149    2.916   67.5   18.7   107   14.1 
2025-06-01 00:00 UT   09 19 10.1   +15 55 39     3.161    2.915   66.8   18.6   108   14.1 
2025-06-02 00:00 UT   09 20 14.0   +15 50 16     3.173    2.915   66.1   18.6   108   14.1 
2025-06-03 00:00 UT   09 21 18.4   +15 44 49     3.186    2.914   65.5   18.5   108   14.1 
2025-06-04 00:00 UT   09 22 23.3   +15 39 18     3.198    2.914   64.8   18.4   108   14.1 
2025-06-05 00:00 UT   09 23 28.7   +15 33 44     3.210    2.913   64.1   18.3   108   14.1 
2025-06-06 00:00 UT   09 24 34.6   +15 28 07     3.222    2.913   63.4   18.2   108   14.1 
2025-06-07 00:00 UT   09 25 41.0   +15 22 26     3.234    2.912   62.8   18.0   108   14.1 
2025-06-08 00:00 UT   09 26 47.9   +15 16 41     3.245    2.912   62.1   17.9   108   14.1 
2025-06-09 00:00 UT   09 27 55.2   +15 10 53     3.257    2.911   61.4   17.8   108   14.1 
2025-06-10 00:00 UT   09 29 03.0   +15 05 01     3.269    2.911   60.7   17.7   108   14.1 

    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.