(409) Aspasia
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Opposition	21 Feb 2025	11.2	2.543 AU	1.585 AU	09h56m	-06°59'	161.7°	7.0°
Today	13 Mar 2025	11.4	2.528 AU	1.611 AU	09h41m	-04°58'	151.2°	10.9°

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)                : 301.18000
            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
2025-03-13 00:00 UT   09 41 04.0   -04 58 19     1.611    2.528  151.2   10.9    74   11.4 
2025-03-13 17:49 UT   09 40 35.8   -04 52 59     1.614    2.527  150.5   11.2    76   11.4 
2025-03-14 00:00 UT   09 40 26.1   -04 51 08     1.615    2.527  150.3   11.2    76   11.4 
2025-03-15 00:00 UT   09 39 49.5   -04 43 53     1.619    2.526  149.4   11.6    77   11.4 
2025-03-16 00:00 UT   09 39 14.3   -04 36 37     1.623    2.525  148.5   11.9    79   11.5 
2025-03-17 00:00 UT   09 38 40.6   -04 29 20     1.628    2.525  147.5   12.2    80   11.5 
2025-03-18 00:00 UT   09 38 08.2   -04 22 02     1.633    2.524  146.6   12.5    81   11.5 
2025-03-19 00:00 UT   09 37 37.4   -04 14 44     1.638    2.523  145.7   12.9    83   11.5 
2025-03-20 00:00 UT   09 37 08.1   -04 07 25     1.643    2.522  144.7   13.2    84   11.5 
2025-03-21 00:00 UT   09 36 40.3   -04 00 07     1.649    2.522  143.7   13.5    85   11.5 
2025-03-22 00:00 UT   09 36 14.0   -03 52 50     1.654    2.521  142.8   13.8    86   11.6 
2025-03-23 00:00 UT   09 35 49.3   -03 45 34     1.660    2.520  141.8   14.2    87   11.6 
2025-03-24 00:00 UT   09 35 26.3   -03 38 20     1.666    2.519  140.8   14.5    88   11.6 
2025-03-25 00:00 UT   09 35 04.8   -03 31 08     1.673    2.518  139.9   14.8    88   11.6 
2025-03-26 00:00 UT   09 34 45.0   -03 23 59     1.679    2.518  138.9   15.1    89   11.6 
2025-03-27 00:00 UT   09 34 26.9   -03 16 52     1.686    2.517  137.9   15.4    90   11.7 
2025-03-28 00:00 UT   09 34 10.4   -03 09 49     1.693    2.516  137.0   15.7    91   11.7 
2025-03-29 00:00 UT   09 33 55.6   -03 02 50     1.700    2.515  136.0   16.0    92   11.7 
2025-03-30 00:00 UT   09 33 42.5   -02 55 55     1.707    2.515  135.1   16.3    92   11.7 
2025-03-31 00:00 UT   09 33 31.1   -02 49 04     1.714    2.514  134.1   16.6    93   11.7 
2025-04-01 00:00 UT   09 33 21.4   -02 42 18     1.722    2.513  133.1   16.9    94   11.7 
2025-04-02 00:00 UT   09 33 13.5   -02 35 37     1.730    2.512  132.2   17.1    94   11.8 
2025-04-03 00:00 UT   09 33 07.2   -02 29 02     1.737    2.512  131.2   17.4    95   11.8 
2025-04-04 00:00 UT   09 33 02.7   -02 22 33     1.745    2.511  130.3   17.7    95   11.8 
2025-04-05 00:00 UT   09 32 59.8   -02 16 09     1.754    2.510  129.3   17.9    96   11.8 
2025-04-06 00:00 UT   09 32 58.6   -02 09 52     1.762    2.509  128.4   18.2    96   11.8 
2025-04-07 00:00 UT   09 32 59.2   -02 03 41     1.770    2.509  127.5   18.5    97   11.9 
2025-04-08 00:00 UT   09 33 01.4   -01 57 37     1.779    2.508  126.5   18.7    97   11.9 
2025-04-09 00:00 UT   09 33 05.3   -01 51 40     1.788    2.507  125.6   18.9    98   11.9 
2025-04-10 00:00 UT   09 33 10.9   -01 45 49     1.797    2.506  124.7   19.2    98   11.9 
2025-04-11 00:00 UT   09 33 18.1   -01 40 06     1.806    2.506  123.8   19.4    99   11.9 
2025-04-12 00:00 UT   09 33 26.9   -01 34 31     1.815    2.505  122.9   19.6    99   11.9 

    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.