(69) Hesperia
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Opposition	12 Apr 2026	11.1	2.887 AU	1.886 AU	13h28m	-04°59'	176.1°	1.4°
Today	21 Apr 2026	11.3	2.901 AU	1.909 AU	13h21m	-04°00'	169.0°	3.8°

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
2026-04-21 00:00 UT   13 21 57.0   -04 00 35     1.909    2.901  169.0    3.8   135   11.3 
2026-04-21 08:56 UT   13 21 41.2   -03 58 07     1.910    2.902  168.6    3.9   134   11.3 
2026-04-22 00:00 UT   13 21 14.7   -03 53 59     1.913    2.903  167.9    4.2   133   11.3 
2026-04-23 00:00 UT   13 20 32.9   -03 47 30     1.917    2.905  166.8    4.5   131   11.3 
2026-04-24 00:00 UT   13 19 51.7   -03 41 07     1.921    2.906  165.7    4.9   130   11.4 
2026-04-25 00:00 UT   13 19 11.1   -03 34 50     1.926    2.908  164.6    5.3   128   11.4 
2026-04-26 00:00 UT   13 18 31.1   -03 28 40     1.931    2.910  163.4    5.7   127   11.4 
2026-04-27 00:00 UT   13 17 51.8   -03 22 37     1.937    2.912  162.3    6.0   126   11.4 
2026-04-28 00:00 UT   13 17 13.3   -03 16 41     1.942    2.913  161.2    6.4   126   11.5 
2026-04-29 00:00 UT   13 16 35.5   -03 10 54     1.948    2.915  160.0    6.8   125   11.5 
2026-04-30 00:00 UT   13 15 58.5   -03 05 13     1.954    2.917  158.9    7.1   124   11.5 
2026-05-01 00:00 UT   13 15 22.3   -02 59 41     1.961    2.918  157.8    7.5   124   11.5 
2026-05-02 00:00 UT   13 14 47.0   -02 54 17     1.967    2.920  156.7    7.9   123   11.6 
2026-05-03 00:00 UT   13 14 12.5   -02 49 02     1.974    2.922  155.5    8.2   123   11.6 
2026-05-04 00:00 UT   13 13 39.0   -02 43 55     1.982    2.924  154.4    8.6   122   11.6 
2026-05-05 00:00 UT   13 13 06.5   -02 38 57     1.989    2.925  153.3    8.9   122   11.6 
2026-05-06 00:00 UT   13 12 34.9   -02 34 08     1.997    2.927  152.2    9.2   121   11.7 
2026-05-07 00:00 UT   13 12 04.3   -02 29 28     2.004    2.929  151.1    9.6   121   11.7 
2026-05-08 00:00 UT   13 11 34.8   -02 24 57     2.013    2.930  150.0    9.9   121   11.7 
2026-05-09 00:00 UT   13 11 06.3   -02 20 35     2.021    2.932  148.9   10.2   120   11.7 
2026-05-10 00:00 UT   13 10 38.8   -02 16 23     2.029    2.934  147.8   10.6   120   11.8 
2026-05-11 00:00 UT   13 10 12.5   -02 12 21     2.038    2.935  146.7   10.9   120   11.8 
2026-05-12 00:00 UT   13 09 47.3   -02 08 28     2.047    2.937  145.7   11.2   120   11.8 
2026-05-13 00:00 UT   13 09 23.2   -02 04 45     2.056    2.939  144.6   11.5   119   11.8 
2026-05-14 00:00 UT   13 09 00.2   -02 01 12     2.066    2.941  143.5   11.8   119   11.8 
2026-05-15 00:00 UT   13 08 38.5   -01 57 49     2.076    2.942  142.5   12.1   119   11.9 
2026-05-16 00:00 UT   13 08 17.9   -01 54 36     2.085    2.944  141.4   12.4   119   11.9 
2026-05-17 00:00 UT   13 07 58.5   -01 51 33     2.095    2.946  140.4   12.7   118   11.9 
2026-05-18 00:00 UT   13 07 40.3   -01 48 39     2.106    2.947  139.3   12.9   118   11.9 
2026-05-19 00:00 UT   13 07 23.4   -01 45 57     2.116    2.949  138.3   13.2   118   12.0 
2026-05-20 00:00 UT   13 07 07.7   -01 43 24     2.127    2.951  137.2   13.5   118   12.0 
2026-05-21 00:00 UT   13 06 53.2   -01 41 01     2.138    2.952  136.2   13.7   118   12.0 

    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.