(82) Alkmene
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	8 Jul 2026	13.2	2.215 AU	2.827 AU	10h09m	+12°49'	44.2°	18.7°
Opposition	2 Jun 2027	12.1	2.906 AU	1.892 AU	16h38m	-25°17'	176.8°	1.1°

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 Alkmene are:

            e (Eccentricity)                : 0.2208602
            a (Semimajor axis)              : 2.7633127
            i (Inclination)                 : 2.82522
            Ω (Longitude of ascending node) : 25.38315
            ω (Argument of perihelion)      : 110.67315
            M (Mean anomaly)                : 14.24591
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : -43.92067
            B (Latitude of perihelion)      : 2.64317
            P (Orbital period in years)     : 4.59            
        

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
2026-07-08 00:00 UT   10 09 03.7   +12 49 51     2.827    2.215   44.2   18.7   109   13.2 
2026-07-08 13:45 UT   10 10 08.5   +12 43 24     2.832    2.216   43.9   18.6   109   13.2 
2026-07-09 00:00 UT   10 10 56.8   +12 38 36     2.836    2.216   43.7   18.5   109   13.2 
2026-07-10 00:00 UT   10 12 49.7   +12 27 17     2.845    2.217   43.3   18.3   109   13.2 
2026-07-11 00:00 UT   10 14 42.7   +12 15 55     2.854    2.219   42.8   18.1   109   13.2 
2026-07-12 00:00 UT   10 16 35.6   +12 04 31     2.863    2.220   42.4   18.0   110   13.2 
2026-07-13 00:00 UT   10 18 28.5   +11 53 03     2.871    2.221   41.9   17.8   110   13.2 
2026-07-14 00:00 UT   10 20 21.4   +11 41 33     2.880    2.223   41.5   17.6   110   13.2 
2026-07-15 00:00 UT   10 22 14.2   +11 29 60     2.889    2.224   41.0   17.4   110   13.2 
2026-07-16 00:00 UT   10 24 07.0   +11 18 24     2.897    2.225   40.5   17.3   110   13.2 
2026-07-17 00:00 UT   10 25 59.7   +11 06 45     2.906    2.227   40.1   17.1   110   13.2 
2026-07-18 00:00 UT   10 27 52.4   +10 55 04     2.914    2.228   39.6   16.9   110   13.2 
2026-07-19 00:00 UT   10 29 45.0   +10 43 20     2.923    2.229   39.2   16.7   110   13.2 
2026-07-20 00:00 UT   10 31 37.6   +10 31 34     2.931    2.231   38.7   16.6   110   13.2 
2026-07-21 00:00 UT   10 33 30.1   +10 19 46     2.939    2.232   38.3   16.4   110   13.2 
2026-07-22 00:00 UT   10 35 22.6   +10 07 55     2.947    2.233   37.8   16.2   110   13.2 
2026-07-23 00:00 UT   10 37 15.0   +09 56 02     2.956    2.235   37.4   16.0   110   13.2 
2026-07-24 00:00 UT   10 39 07.3   +09 44 06     2.964    2.236   36.9   15.8   110   13.2 
2026-07-25 00:00 UT   10 40 59.6   +09 32 09     2.972    2.238   36.5   15.6   110   13.2 

    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.