(69) Hesperia
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	2 Oct 2025	12.6	2.588 AU	3.493 AU	11h09m	+02°26'	21.5°	8.2°
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. 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
2025-10-02 00:00 UT   11 09 09.3   +02 26 39     3.493    2.588   21.5    8.2   286   12.6 
2025-10-02 20:33 UT   11 10 34.1   +02 18 52     3.490    2.589   22.0    8.3   286   12.6 
2025-10-03 00:00 UT   11 10 48.4   +02 17 33     3.489    2.589   22.1    8.3   286   12.6 
2025-10-04 00:00 UT   11 12 27.3   +02 08 27     3.485    2.591   22.6    8.5   286   12.6 
2025-10-05 00:00 UT   11 14 06.0   +01 59 22     3.481    2.592   23.1    8.7   287   12.6 
2025-10-06 00:00 UT   11 15 44.5   +01 50 16     3.477    2.593   23.7    8.9   287   12.6 
2025-10-07 00:00 UT   11 17 22.8   +01 41 11     3.473    2.594   24.2    9.1   287   12.6 
2025-10-08 00:00 UT   11 19 00.9   +01 32 06     3.469    2.596   24.8    9.3   287   12.6 
2025-10-09 00:00 UT   11 20 38.8   +01 23 02     3.464    2.597   25.3    9.5   288   12.6 
2025-10-10 00:00 UT   11 22 16.5   +01 13 58     3.460    2.598   25.9    9.7   288   12.6 
2025-10-11 00:00 UT   11 23 54.0   +01 04 54     3.455    2.599   26.4    9.8   288   12.6 
2025-10-12 00:00 UT   11 25 31.2   +00 55 51     3.450    2.601   27.0   10.0   288   12.6 
2025-10-13 00:00 UT   11 27 08.3   +00 46 49     3.446    2.602   27.5   10.2   288   12.6 
2025-10-14 00:00 UT   11 28 45.1   +00 37 48     3.441    2.603   28.1   10.4   288   12.6 
2025-10-15 00:00 UT   11 30 21.7   +00 28 47     3.436    2.604   28.6   10.6   289   12.6 
2025-10-16 00:00 UT   11 31 58.1   +00 19 47     3.430    2.606   29.2   10.8   289   12.6 
2025-10-17 00:00 UT   11 33 34.3   +00 10 48     3.425    2.607   29.7   10.9   289   12.6 
2025-10-18 00:00 UT   11 35 10.2   +00 01 50     3.420    2.608   30.3   11.1   289   12.7 
2025-10-19 00:00 UT   11 36 46.0   +00 07 07     3.414    2.610   30.9   11.3   289   12.7 
2025-10-20 00:00 UT   11 38 21.4   +00 16 03     3.408    2.611   31.4   11.5   289   12.7 
2025-10-21 00:00 UT   11 39 56.7   +00 24 58     3.403    2.612   32.0   11.7   290   12.7 

    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.