(59) Elpis
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Opposition	6 Aug 2025	11.4	2.560 AU	1.553 AU	20h58m	-08°27'	171.6°	3.3°
Today	11 Aug 2025	11.4	2.555 AU	1.550 AU	20h54m	-08°57'	170.6°	3.7°

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 Elpis are:

            e (Eccentricity)                : 0.1167475
            a (Semimajor axis)              : 2.7141370
            i (Inclination)                 : 8.64746
            Ω (Longitude of ascending node) : 169.91249
            ω (Argument of perihelion)      : 211.08400
            M (Mean anomaly)                : 284.25821
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 200.70763
            B (Latitude of perihelion)      : -4.45218
            P (Orbital period in years)     : 4.47            
        

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
2025-08-11 00:00 UT   20 54 30.4   -08 57 36     1.550    2.555  170.6    3.7   134   11.4 
2025-08-11 01:49 UT   20 54 26.7   -08 58 07     1.550    2.555  170.6    3.7   133   11.4 
2025-08-12 00:00 UT   20 53 42.4   -09 04 27     1.550    2.554  170.0    4.0   128   11.5 
2025-08-13 00:00 UT   20 52 54.7   -09 11 21     1.551    2.553  169.3    4.2   122   11.5 
2025-08-14 00:00 UT   20 52 07.4   -09 18 18     1.551    2.552  168.5    4.5   118   11.5 
2025-08-15 00:00 UT   20 51 20.5   -09 25 18     1.552    2.551  167.7    4.9   114   11.5 
2025-08-16 00:00 UT   20 50 34.1   -09 32 20     1.553    2.550  166.8    5.2   110   11.5 
2025-08-17 00:00 UT   20 49 48.3   -09 39 24     1.555    2.549  165.9    5.6   107   11.5 
2025-08-18 00:00 UT   20 49 03.0   -09 46 29     1.557    2.548  164.9    5.9   105   11.6 
2025-08-19 00:00 UT   20 48 18.5   -09 53 35     1.558    2.546  163.9    6.3   102   11.6 
2025-08-20 00:00 UT   20 47 34.7   -10 00 42     1.561    2.545  162.9    6.7   100   11.6 
2025-08-21 00:00 UT   20 46 51.6   -10 07 49     1.563    2.544  161.9    7.1    98   11.6 
2025-08-22 00:00 UT   20 46 09.4   -10 14 57     1.566    2.543  160.9    7.5    97   11.6 
2025-08-23 00:00 UT   20 45 28.2   -10 22 03     1.569    2.542  159.8    7.9    95   11.7 
2025-08-24 00:00 UT   20 44 47.8   -10 29 09     1.572    2.541  158.8    8.3    94   11.7 
2025-08-25 00:00 UT   20 44 08.6   -10 36 14     1.575    2.540  157.7    8.7    93   11.7 
2025-08-26 00:00 UT   20 43 30.3   -10 43 17     1.579    2.539  156.7    9.1    92   11.7 
2025-08-27 00:00 UT   20 42 53.2   -10 50 18     1.583    2.538  155.6    9.5    91   11.7 
2025-08-28 00:00 UT   20 42 17.3   -10 57 17     1.587    2.537  154.5    9.9    90   11.8 
2025-08-29 00:00 UT   20 41 42.5   -11 04 13     1.592    2.536  153.4   10.3    89   11.8 
2025-08-30 00:00 UT   20 41 09.0   -11 11 06     1.596    2.534  152.4   10.6    88   11.8 
2025-08-31 00:00 UT   20 40 36.8   -11 17 57     1.601    2.533  151.3   11.0    88   11.8 
2025-09-01 00:00 UT   20 40 05.9   -11 24 43     1.606    2.532  150.2   11.4    87   11.8 
2025-09-02 00:00 UT   20 39 36.4   -11 31 26     1.612    2.531  149.2   11.8    86   11.9 
2025-09-03 00:00 UT   20 39 08.3   -11 38 05     1.617    2.530  148.1   12.2    86   11.9 
2025-09-04 00:00 UT   20 38 41.6   -11 44 39     1.623    2.529  147.0   12.5    85   11.9 
2025-09-05 00:00 UT   20 38 16.3   -11 51 09     1.629    2.528  146.0   12.9    85   11.9 
2025-09-06 00:00 UT   20 37 52.5   -11 57 34     1.635    2.527  144.9   13.3    84   12.0 
2025-09-07 00:00 UT   20 37 30.2   -12 03 54     1.641    2.526  143.9   13.6    84   12.0 
2025-09-08 00:00 UT   20 37 09.5   -12 10 09     1.648    2.525  142.8   14.0    84   12.0 
2025-09-09 00:00 UT   20 36 50.2   -12 16 18     1.655    2.524  141.8   14.3    83   12.0 
2025-09-10 00:00 UT   20 36 32.5   -12 22 22     1.661    2.523  140.7   14.6    83   12.0 

    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.