(69) Hesperia
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	12 Jul 2025	12.5	2.507 AU	3.431 AU	08h44m	+13°20'	20.8°	8.3°
Opposition	12 Apr 2026	11.1	2.887 AU	1.886 AU	13h28m	-05°00'	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)                : 0.1692846
            a (Semimajor axis)              : 2.9782674
            i (Inclination)                 : 8.58432
            Ω (Longitude of ascending node) : 184.90389
            ω (Argument of perihelion)      : 288.18018
            M (Mean anomaly)                : 4.38864
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 113.27628
            B (Latitude of perihelion)      : -8.15280
            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
2025-07-12 00:00 UT   08 44 23.6   +13 20 22     3.431    2.507   20.8    8.3   117   12.5 
2025-07-12 09:37 UT   08 45 08.0   +13 18 03     3.433    2.508   20.6    8.2   118   12.5 
2025-07-13 00:00 UT   08 46 14.4   +13 14 34     3.436    2.508   20.4    8.1   118   12.5 
2025-07-14 00:00 UT   08 48 05.1   +13 08 41     3.441    2.509   19.9    7.9   118   12.4 
2025-07-15 00:00 UT   08 49 55.8   +13 02 43     3.445    2.509   19.4    7.7   119   12.4 
2025-07-16 00:00 UT   08 51 46.5   +12 56 42     3.450    2.510   18.9    7.5   119   12.4 
2025-07-17 00:00 UT   08 53 37.0   +12 50 35     3.455    2.511   18.4    7.3   119   12.4 
2025-07-18 00:00 UT   08 55 27.5   +12 44 24     3.459    2.512   17.9    7.2   120   12.4 
2025-07-19 00:00 UT   08 57 17.9   +12 38 09     3.463    2.512   17.4    7.0   120   12.4 
2025-07-20 00:00 UT   08 59 08.3   +12 31 50     3.468    2.513   17.0    6.8   121   12.4 
2025-07-21 00:00 UT   09 00 58.5   +12 25 26     3.472    2.514   16.5    6.6   121   12.4 
2025-07-22 00:00 UT   09 02 48.7   +12 18 58     3.476    2.515   16.0    6.4   122   12.4 
2025-07-23 00:00 UT   09 04 38.8   +12 12 25     3.480    2.516   15.5    6.2   122   12.4 
2025-07-24 00:00 UT   09 06 28.8   +12 05 49     3.483    2.516   15.0    6.0   123   12.4 
2025-07-25 00:00 UT   09 08 18.7   +11 59 08     3.487    2.517   14.6    5.8   124   12.4 
2025-07-26 00:00 UT   09 10 08.6   +11 52 23     3.491    2.518   14.1    5.6   124   12.4 
2025-07-27 00:00 UT   09 11 58.3   +11 45 35     3.494    2.519   13.6    5.4   125   12.4 
2025-07-28 00:00 UT   09 13 47.9   +11 38 42     3.498    2.520   13.1    5.3   126   12.4 
2025-07-29 00:00 UT   09 15 37.4   +11 31 45     3.501    2.520   12.7    5.1   126   12.4 
2025-07-30 00:00 UT   09 17 26.8   +11 24 45     3.504    2.521   12.2    4.9   127   12.4 

    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.