(82) Alkmene
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	26 Apr 2024	14.6	3.324 AU	3.910 AU	23h18m	-06°31'	48.1°	13.0°
Opposition	19 Sep 2024	12.6	3.157 AU	2.153 AU	23h52m	-02°59'	178.0°	0.6°

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)                : 0.2206495
            a (Semimajor axis)              : 2.7624349
            i (Inclination)                 : 2.82622
            Ω (Longitude of ascending node) : 25.43297
            ω (Argument of perihelion)      : 110.90985
            M (Mean anomaly)                : 159.32432
            Epoch                           : 2023 Sep 13

            L (Longitude of perihelion)     : -43.63392
            B (Latitude of perihelion)      : 2.63996
            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. 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
2024-04-26 00:00 UT   23 18 04.1   -06 31 50     3.910    3.324   48.1   13.0   245   14.6 
2024-04-26 11:49 UT   23 18 36.1   -06 28 29     3.904    3.323   48.5   13.1   245   14.6 
2024-04-27 00:00 UT   23 19 09.0   -06 25 03     3.898    3.323   48.8   13.2   245   14.6 
2024-04-28 00:00 UT   23 20 13.6   -06 18 18     3.887    3.322   49.5   13.3   245   14.6 
2024-04-29 00:00 UT   23 21 17.8   -06 11 35     3.875    3.322   50.2   13.5   245   14.6 
2024-04-30 00:00 UT   23 22 21.7   -06 04 53     3.863    3.321   50.9   13.6   245   14.6 
2024-05-01 00:00 UT   23 23 25.3   -05 58 14     3.851    3.320   51.6   13.7   245   14.6 
2024-05-02 00:00 UT   23 24 28.5   -05 51 36     3.839    3.319   52.2   13.9   245   14.6 
2024-05-03 00:00 UT   23 25 31.3   -05 45 01     3.827    3.319   52.9   14.0   245   14.6 
2024-05-04 00:00 UT   23 26 33.8   -05 38 27     3.815    3.318   53.6   14.2   245   14.6 
2024-05-05 00:00 UT   23 27 35.9   -05 31 56     3.803    3.317   54.3   14.3   245   14.6 
2024-05-06 00:00 UT   23 28 37.6   -05 25 27     3.790    3.316   55.0   14.4   245   14.6 
2024-05-07 00:00 UT   23 29 39.0   -05 19 00     3.778    3.315   55.7   14.6   245   14.6 
2024-05-08 00:00 UT   23 30 39.9   -05 12 36     3.765    3.315   56.4   14.7   246   14.6 
2024-05-09 00:00 UT   23 31 40.5   -05 06 14     3.752    3.314   57.1   14.8   246   14.6 
2024-05-10 00:00 UT   23 32 40.6   -04 59 55     3.740    3.313   57.8   14.9   246   14.6 
2024-05-11 00:00 UT   23 33 40.3   -04 53 38     3.727    3.312   58.5   15.1   246   14.6 
2024-05-12 00:00 UT   23 34 39.6   -04 47 24     3.714    3.311   59.2   15.2   246   14.6 
2024-05-13 00:00 UT   23 35 38.5   -04 41 12     3.700    3.310   59.9   15.3   246   14.6 
2024-05-14 00:00 UT   23 36 37.0   -04 35 03     3.687    3.310   60.6   15.4   246   14.6 
2024-05-15 00:00 UT   23 37 35.0   -04 28 57     3.674    3.309   61.3   15.5   246   14.6 
2024-05-16 00:00 UT   23 38 32.5   -04 22 54     3.660    3.308   62.0   15.7   246   14.6 
2024-05-17 00:00 UT   23 39 29.7   -04 16 53     3.647    3.307   62.7   15.8   246   14.6 
2024-05-18 00:00 UT   23 40 26.3   -04 10 56     3.633    3.306   63.4   15.9   246   14.6 
2024-05-19 00:00 UT   23 41 22.6   -04 05 01     3.620    3.305   64.1   16.0   246   14.5 
2024-05-20 00:00 UT   23 42 18.3   -03 59 10     3.606    3.305   64.8   16.1   246   14.5 
2024-05-21 00:00 UT   23 43 13.6   -03 53 21     3.592    3.304   65.5   16.2   246   14.5 
2024-05-22 00:00 UT   23 44 08.4   -03 47 36     3.578    3.303   66.2   16.3   246   14.5 
2024-05-23 00:00 UT   23 45 02.7   -03 41 53     3.564    3.302   66.9   16.4   246   14.5 
2024-05-24 00:00 UT   23 45 56.5   -03 36 14     3.550    3.301   67.7   16.5   246   14.5 
2024-05-25 00:00 UT   23 46 49.8   -03 30 38     3.536    3.300   68.4   16.6   246   14.5 
2024-05-26 00:00 UT   23 47 42.6   -03 25 06     3.522    3.299   69.1   16.7   246   14.5 

    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.