(409) Aspasia
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	9 May 2025	12.4	2.485 AU	2.096 AU	09h46m	+00°03'	100.4°	23.6°
Opposition	9 Jul 2026	10.9	2.446 AU	1.447 AU	19h09m	-08°39'	166.3°	5.7°

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)                : 0.0731923
            a (Semimajor axis)              : 2.5747933
            i (Inclination)                 : 11.28539
            Ω (Longitude of ascending node) : 242.05210
            ω (Argument of perihelion)      : 355.76508
            M (Mean anomaly)                : 301.17999
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 237.89877
            B (Latitude of perihelion)      : -0.82803
            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. 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
2025-05-09 00:00 UT   09 46 50.4   +00 03 33     2.096    2.485  100.4   23.6   108   12.4 
2025-05-09 08:07 UT   09 47 06.6   +00 04 05     2.100    2.485  100.1   23.6   108   12.4 
2025-05-10 00:00 UT   09 47 38.7   +00 05 06     2.108    2.484   99.6   23.6   108   12.4 
2025-05-11 00:00 UT   09 48 28.1   +00 06 30     2.119    2.484   98.9   23.7   108   12.4 
2025-05-12 00:00 UT   09 49 18.6   +00 07 45     2.130    2.483   98.1   23.8   108   12.4 
2025-05-13 00:00 UT   09 50 10.2   +00 08 51     2.141    2.482   97.4   23.8   108   12.4 
2025-05-14 00:00 UT   09 51 02.9   +00 09 49     2.153    2.481   96.6   23.9   109   12.4 
2025-05-15 00:00 UT   09 51 56.7   +00 10 37     2.164    2.481   95.9   23.9   109   12.4 
2025-05-16 00:00 UT   09 52 51.5   +00 11 18     2.176    2.480   95.2   24.0   109   12.5 
2025-05-17 00:00 UT   09 53 47.3   +00 11 49     2.187    2.479   94.4   24.0   109   12.5 
2025-05-18 00:00 UT   09 54 44.1   +00 12 12     2.198    2.479   93.7   24.0   110   12.5 
2025-05-19 00:00 UT   09 55 41.9   +00 12 26     2.210    2.478   93.0   24.1   110   12.5 
2025-05-20 00:00 UT   09 56 40.6   +00 12 32     2.221    2.477   92.3   24.1   110   12.5 
2025-05-21 00:00 UT   09 57 40.3   +00 12 29     2.233    2.477   91.6   24.1   110   12.5 
2025-05-22 00:00 UT   09 58 41.0   +00 12 18     2.244    2.476   90.9   24.1   110   12.5 
2025-05-23 00:00 UT   09 59 42.5   +00 11 58     2.256    2.475   90.2   24.1   111   12.5 
2025-05-24 00:00 UT   10 00 45.0   +00 11 30     2.267    2.474   89.5   24.2   111   12.5 
2025-05-25 00:00 UT   10 01 48.4   +00 10 53     2.279    2.474   88.8   24.2   111   12.6 
2025-05-26 00:00 UT   10 02 52.7   +00 10 09     2.290    2.473   88.1   24.2   111   12.6 
2025-05-27 00:00 UT   10 03 57.8   +00 09 15     2.302    2.472   87.4   24.2   111   12.6 
2025-05-28 00:00 UT   10 05 03.8   +00 08 14     2.313    2.472   86.7   24.2   111   12.6 
2025-05-29 00:00 UT   10 06 10.6   +00 07 05     2.325    2.471   86.0   24.2   112   12.6 
2025-05-30 00:00 UT   10 07 18.2   +00 05 47     2.336    2.470   85.4   24.1   112   12.6 
2025-05-31 00:00 UT   10 08 26.6   +00 04 22     2.348    2.470   84.7   24.1   112   12.6 
2025-06-01 00:00 UT   10 09 35.8   +00 02 48     2.359    2.469   84.0   24.1   112   12.6 
2025-06-02 00:00 UT   10 10 45.8   +00 01 06     2.370    2.468   83.4   24.1   112   12.6 
2025-06-03 00:00 UT   10 11 56.5   +00 00 43     2.382    2.468   82.7   24.1   112   12.6 
2025-06-04 00:00 UT   10 13 08.0   +00 02 40     2.393    2.467   82.1   24.0   113   12.7 
2025-06-05 00:00 UT   10 14 20.2   +00 04 44     2.405    2.466   81.4   24.0   113   12.7 
2025-06-06 00:00 UT   10 15 33.1   +00 06 57     2.416    2.466   80.8   24.0   113   12.7 
2025-06-07 00:00 UT   10 16 46.6   +00 09 16     2.427    2.465   80.1   23.9   113   12.7 
2025-06-08 00:00 UT   10 18 00.9   +00 11 43     2.439    2.464   79.5   23.9   113   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.