(69) Hesperia
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	8 Dec 2025	12.7	2.681 AU	3.005 AU	12h50m	-06°46'	61.6°	18.9°
Opposition	12 Apr 2026	11.1	2.887 AU	1.886 AU	13h28m	-04°59'	176.1°	1.4°

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 Hesperia are:

            e (Eccentricity)                : 0.1689530
            a (Semimajor axis)              : 2.9770572
            i (Inclination)                 : 8.58563
            Ω (Longitude of ascending node) : 184.89404
            ω (Argument of perihelion)      : 288.15032
            M (Mean anomaly)                : 42.79758
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 113.23636
            B (Latitude of perihelion)      : -8.15544
            P (Orbital period in years)     : 5.14            
        

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
2025-12-08 00:00 UT   12 50 10.4   -06 46 21     3.005    2.681   61.6   18.9   292   12.7 
2025-12-08 14:25 UT   12 50 57.4   -06 50 16     2.999    2.681   62.0   18.9   292   12.7 
2025-12-09 00:00 UT   12 51 28.6   -06 52 52     2.994    2.682   62.3   19.0   292   12.7 
2025-12-10 00:00 UT   12 52 46.2   -06 59 18     2.984    2.684   63.0   19.1   292   12.7 
2025-12-11 00:00 UT   12 54 03.3   -07 05 39     2.973    2.685   63.6   19.2   292   12.7 
2025-12-12 00:00 UT   12 55 19.9   -07 11 55     2.962    2.687   64.3   19.3   292   12.7 
2025-12-13 00:00 UT   12 56 36.0   -07 18 07     2.951    2.688   65.0   19.4   292   12.7 
2025-12-14 00:00 UT   12 57 51.5   -07 24 13     2.941    2.690   65.7   19.5   292   12.7 
2025-12-15 00:00 UT   12 59 06.4   -07 30 15     2.930    2.691   66.4   19.6   292   12.7 
2025-12-16 00:00 UT   13 00 20.8   -07 36 11     2.919    2.693   67.1   19.7   292   12.7 
2025-12-17 00:00 UT   13 01 34.6   -07 42 02     2.907    2.694   67.8   19.8   292   12.7 
2025-12-18 00:00 UT   13 02 47.8   -07 47 47     2.896    2.696   68.5   19.9   292   12.7 
2025-12-19 00:00 UT   13 04 00.4   -07 53 28     2.885    2.697   69.2   19.9   292   12.7 
2025-12-20 00:00 UT   13 05 12.3   -07 59 02     2.874    2.699   69.9   20.0   292   12.7 
2025-12-21 00:00 UT   13 06 23.7   -08 04 31     2.862    2.700   70.6   20.1   292   12.7 
2025-12-22 00:00 UT   13 07 34.4   -08 09 55     2.851    2.702   71.3   20.2   292   12.6 
2025-12-23 00:00 UT   13 08 44.4   -08 15 13     2.840    2.704   72.1   20.3   292   12.6 
2025-12-24 00:00 UT   13 09 53.8   -08 20 25     2.828    2.705   72.8   20.3   292   12.6 
2025-12-25 00:00 UT   13 11 02.5   -08 25 31     2.816    2.707   73.5   20.4   292   12.6 
2025-12-26 00:00 UT   13 12 10.4   -08 30 31     2.805    2.708   74.2   20.5   292   12.6 
2025-12-27 00:00 UT   13 13 17.7   -08 35 25     2.793    2.710   75.0   20.5   292   12.6 
2025-12-28 00:00 UT   13 14 24.3   -08 40 13     2.781    2.711   75.7   20.6   292   12.6 
2025-12-29 00:00 UT   13 15 30.2   -08 44 55     2.770    2.713   76.4   20.6   292   12.6 
2025-12-30 00:00 UT   13 16 35.3   -08 49 30     2.758    2.715   77.2   20.7   292   12.6 
2025-12-31 00:00 UT   13 17 39.7   -08 53 60     2.746    2.716   77.9   20.7   292   12.6 
2026-01-01 00:00 UT   13 18 43.3   -08 58 23     2.734    2.718   78.7   20.8   292   12.6 
2026-01-02 00:00 UT   13 19 46.1   -09 02 40     2.722    2.719   79.4   20.8   292   12.6 
2026-01-03 00:00 UT   13 20 48.2   -09 06 50     2.710    2.721   80.2   20.9   292   12.6 
2026-01-04 00:00 UT   13 21 49.5   -09 10 54     2.698    2.722   80.9   20.9   292   12.6 
2026-01-05 00:00 UT   13 22 49.9   -09 14 51     2.686    2.724   81.7   20.9   292   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.