(59) Elpis
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	18 Jul 2025	11.8	2.583 AU	1.625 AU	21h12m	-06°44'	155.2°	9.5°
Opposition	6 Aug 2025	11.4	2.560 AU	1.553 AU	20h58m	-08°27'	171.6°	3.3°

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)      : 211.08401
            M (Mean anomaly)                : 284.25821
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 200.70764
            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
2025-07-18 00:00 UT   21 12 40.6   -06 44 22     1.625    2.583  155.2    9.5   233   11.8 
2025-07-18 23:01 UT   21 12 04.4   -06 48 06     1.619    2.582  156.2    9.1   232   11.8 
2025-07-19 00:00 UT   21 12 02.8   -06 48 16     1.619    2.582  156.2    9.1   232   11.8 
2025-07-20 00:00 UT   21 11 23.9   -06 52 21     1.613    2.580  157.3    8.7   231   11.8 
2025-07-21 00:00 UT   21 10 44.1   -06 56 36     1.608    2.579  158.3    8.4   229   11.8 
2025-07-22 00:00 UT   21 10 03.3   -07 01 00     1.602    2.578  159.4    8.0   228   11.7 
2025-07-23 00:00 UT   21 09 21.5   -07 05 35     1.597    2.577  160.4    7.6   227   11.7 
2025-07-24 00:00 UT   21 08 39.0   -07 10 19     1.593    2.576  161.4    7.2   225   11.7 
2025-07-25 00:00 UT   21 07 55.6   -07 15 12     1.588    2.575  162.4    6.8   224   11.7 
2025-07-26 00:00 UT   21 07 11.5   -07 20 15     1.584    2.574  163.4    6.5   222   11.6 
2025-07-27 00:00 UT   21 06 26.7   -07 25 26     1.580    2.572  164.4    6.1   219   11.6 
2025-07-28 00:00 UT   21 05 41.2   -07 30 46     1.576    2.571  165.4    5.7   217   11.6 
2025-07-29 00:00 UT   21 04 55.2   -07 36 14     1.572    2.570  166.3    5.4   214   11.6 
2025-07-30 00:00 UT   21 04 08.6   -07 41 51     1.569    2.569  167.2    5.0   211   11.5 
2025-07-31 00:00 UT   21 03 21.6   -07 47 35     1.566    2.568  168.1    4.7   207   11.5 
2025-08-01 00:00 UT   21 02 34.2   -07 53 26     1.563    2.567  168.9    4.4   203   11.5 
2025-08-02 00:00 UT   21 01 46.4   -07 59 25     1.561    2.566  169.6    4.1   198   11.5 
2025-08-03 00:00 UT   21 00 58.3   -08 05 30     1.559    2.564  170.3    3.8   193   11.5 
2025-08-04 00:00 UT   21 00 10.0   -08 11 42     1.557    2.563  170.8    3.6   186   11.4 
2025-08-05 00:00 UT   20 59 21.5   -08 17 60     1.555    2.562  171.2    3.5   179   11.4 
2025-08-06 00:00 UT   20 58 32.9   -08 24 23     1.553    2.561  171.5    3.3   172   11.4 
2025-08-07 00:00 UT   20 57 44.3   -08 30 53     1.552    2.560  171.7    3.3   164   11.4 
2025-08-08 00:00 UT   20 56 55.6   -08 37 27     1.551    2.559  171.6    3.3   156   11.4 
2025-08-09 00:00 UT   20 56 07.1   -08 44 06     1.551    2.558  171.4    3.4   148   11.4 
2025-08-10 00:00 UT   20 55 18.6   -08 50 49     1.550    2.556  171.1    3.5   140   11.4 
2025-08-11 00:00 UT   20 54 30.4   -08 57 36     1.550    2.555  170.6    3.7   134   11.4 
2025-08-12 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 

    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.