(409) Aspasia
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Opposition	9 Jul 2026	10.8	2.446 AU	1.447 AU	19h09m	-08°39'	166.3°	5.7°
Today	22 Jul 2026	11.0	2.454 AU	1.474 AU	18h57m	-08°26'	160.1°	8.1°

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 Aspasia are:

            e (Eccentricity)                : 0.0734781
            a (Semimajor axis)              : 2.5755624
            i (Inclination)                 : 11.28422
            Ω (Longitude of ascending node) : 242.05128
            ω (Argument of perihelion)      : 355.71959
            M (Mean anomaly)                : 36.62705
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 237.85332
            B (Latitude of perihelion)      : -0.83682
            P (Orbital period in years)     : 4.13            
        

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
2026-07-22 00:00 UT   18 57 57.7   -08 26 24     1.474    2.454  160.1    8.1   129   11.0 
2026-07-22 18:16 UT   18 57 19.8   -08 26 18     1.477    2.455  159.4    8.4   127   11.0 
2026-07-23 00:00 UT   18 57 08.0   -08 26 17     1.478    2.455  159.2    8.4   126   11.0 
2026-07-24 00:00 UT   18 56 19.2   -08 26 17     1.482    2.455  158.4    8.8   124   11.1 
2026-07-25 00:00 UT   18 55 31.5   -08 26 24     1.487    2.456  157.5    9.1   122   11.1 
2026-07-26 00:00 UT   18 54 44.8   -08 26 38     1.491    2.457  156.6    9.5   121   11.1 
2026-07-27 00:00 UT   18 53 59.4   -08 26 59     1.496    2.457  155.7    9.8   119   11.1 
2026-07-28 00:00 UT   18 53 15.1   -08 27 27     1.501    2.458  154.7   10.1   117   11.1 
2026-07-29 00:00 UT   18 52 32.0   -08 28 02     1.506    2.459  153.8   10.5   116   11.2 
2026-07-30 00:00 UT   18 51 50.2   -08 28 43     1.512    2.459  152.9   10.9   115   11.2 
2026-07-31 00:00 UT   18 51 09.7   -08 29 30     1.518    2.460  151.9   11.2   113   11.2 
2026-08-01 00:00 UT   18 50 30.6   -08 30 24     1.524    2.461  150.9   11.6   112   11.2 
2026-08-02 00:00 UT   18 49 52.8   -08 31 23     1.530    2.461  150.0   11.9   111   11.2 
2026-08-03 00:00 UT   18 49 16.5   -08 32 28     1.536    2.462  149.0   12.3   110   11.3 
2026-08-04 00:00 UT   18 48 41.6   -08 33 39     1.543    2.463  148.0   12.6   109   11.3 
2026-08-05 00:00 UT   18 48 08.2   -08 34 55     1.549    2.463  147.1   12.9   108   11.3 
2026-08-06 00:00 UT   18 47 36.3   -08 36 17     1.556    2.464  146.1   13.3   107   11.3 
2026-08-07 00:00 UT   18 47 06.0   -08 37 44     1.563    2.465  145.1   13.6   107   11.4 
2026-08-08 00:00 UT   18 46 37.2   -08 39 15     1.571    2.465  144.2   13.9   106   11.4 
2026-08-09 00:00 UT   18 46 10.0   -08 40 52     1.578    2.466  143.2   14.3   105   11.4 
2026-08-10 00:00 UT   18 45 44.4   -08 42 32     1.586    2.467  142.2   14.6   104   11.4 
2026-08-11 00:00 UT   18 45 20.4   -08 44 17     1.594    2.467  141.2   14.9   104   11.5 
2026-08-12 00:00 UT   18 44 58.1   -08 46 07     1.602    2.468  140.3   15.2   103   11.5 
2026-08-13 00:00 UT   18 44 37.5   -08 47 60     1.610    2.469  139.3   15.5   103   11.5 
2026-08-14 00:00 UT   18 44 18.5   -08 49 56     1.619    2.469  138.3   15.8   102   11.5 
2026-08-15 00:00 UT   18 44 01.3   -08 51 56     1.627    2.470  137.4   16.1   101   11.5 
2026-08-16 00:00 UT   18 43 45.8   -08 53 60     1.636    2.471  136.4   16.4   101   11.6 
2026-08-17 00:00 UT   18 43 32.0   -08 56 06     1.645    2.471  135.5   16.7   100   11.6 
2026-08-18 00:00 UT   18 43 19.9   -08 58 15     1.654    2.472  134.5   17.0   100   11.6 
2026-08-19 00:00 UT   18 43 09.5   -09 00 27     1.664    2.473  133.6   17.2    99   11.6 
2026-08-20 00:00 UT   18 43 00.9   -09 02 41     1.673    2.473  132.7   17.5    99   11.7 
2026-08-21 00:00 UT   18 42 53.9   -09 04 57     1.683    2.474  131.7   17.8    98   11.7 

    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.