2020 OM4
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	28 Apr 2026	27.0	2.444 AU	1.529 AU	12h19m	-28°57'	148.3°	12.5°

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 2020 OM4 are:

            e (Eccentricity)                : 0.5047802
            a (Semimajor axis)              : 1.6717280
            i (Inclination)                 : 15.41711
            Ω (Longitude of ascending node) : 308.09373
            ω (Argument of perihelion)      : 63.83601
            M (Mean anomaly)                : 143.49152
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 11.08949
            B (Latitude of perihelion)      : 13.80419
            P (Orbital period in years)     : 2.16            
        

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
2026-04-28 00:00 UT   12 19 13.6   -28 57 10     1.529    2.444  148.3   12.5    68   27.0 
2026-04-28 23:48 UT   12 18 00.9   -28 46 25     1.532    2.442  147.5   12.8    70   27.0 
2026-04-29 00:00 UT   12 18 00.3   -28 46 19     1.532    2.442  147.5   12.8    70   27.0 
2026-04-30 00:00 UT   12 16 48.8   -28 35 22     1.535    2.440  146.7   13.1    72   27.0 
2026-05-01 00:00 UT   12 15 39.4   -28 24 19     1.538    2.438  145.8   13.4    74   27.0 
2026-05-02 00:00 UT   12 14 31.9   -28 13 11     1.541    2.436  145.0   13.7    76   27.1 
2026-05-03 00:00 UT   12 13 26.4   -28 01 59     1.545    2.434  144.1   14.1    77   27.1 
2026-05-04 00:00 UT   12 12 23.1   -27 50 43     1.548    2.432  143.2   14.4    79   27.1 
2026-05-05 00:00 UT   12 11 21.9   -27 39 25     1.552    2.430  142.3   14.7    80   27.1 
2026-05-06 00:00 UT   12 10 22.8   -27 28 05     1.557    2.428  141.4   15.0    82   27.1 
2026-05-07 00:00 UT   12 09 25.8   -27 16 45     1.561    2.426  140.5   15.3    83   27.1 
2026-05-08 00:00 UT   12 08 31.1   -27 05 24     1.566    2.424  139.5   15.7    85   27.2 
2026-05-09 00:00 UT   12 07 38.6   -26 54 03     1.571    2.422  138.6   16.0    86   27.2 
2026-05-10 00:00 UT   12 06 48.3   -26 42 44     1.576    2.420  137.7   16.3    87   27.2 
2026-05-11 00:00 UT   12 06 00.2   -26 31 27     1.581    2.417  136.7   16.6    88   27.2 
2026-05-12 00:00 UT   12 05 14.5   -26 20 13     1.587    2.415  135.7   17.0    89   27.2 
2026-05-13 00:00 UT   12 04 30.9   -26 09 02     1.592    2.413  134.8   17.3    90   27.2 
2026-05-14 00:00 UT   12 03 49.7   -25 57 55     1.598    2.411  133.8   17.6    91   27.3 
2026-05-15 00:00 UT   12 03 10.7   -25 46 53     1.604    2.408  132.9   17.9    92   27.3 
2026-05-16 00:00 UT   12 02 34.0   -25 35 56     1.610    2.406  131.9   18.2    93   27.3 
2026-05-17 00:00 UT   12 01 59.6   -25 25 05     1.617    2.404  130.9   18.5    94   27.3 
2026-05-18 00:00 UT   12 01 27.5   -25 14 20     1.623    2.402  130.0   18.8    95   27.3 
2026-05-19 00:00 UT   12 00 57.7   -25 03 43     1.630    2.399  129.0   19.1    96   27.3 
2026-05-20 00:00 UT   12 00 30.1   -24 53 14     1.637    2.397  128.1   19.4    96   27.3 
2026-05-21 00:00 UT   12 00 04.8   -24 42 52     1.644    2.394  127.1   19.7    97   27.4 
2026-05-22 00:00 UT   11 59 41.6   -24 32 39     1.651    2.392  126.1   20.0    98   27.4 
2026-05-23 00:00 UT   11 59 20.8   -24 22 35     1.658    2.389  125.2   20.3    99   27.4 
2026-05-24 00:00 UT   11 59 02.1   -24 12 40     1.666    2.387  124.2   20.5    99   27.4 
2026-05-25 00:00 UT   11 58 45.6   -24 02 55     1.673    2.384  123.3   20.8   100   27.4 
2026-05-26 00:00 UT   11 58 31.2   -23 53 20     1.681    2.382  122.4   21.1   101   27.4 
2026-05-27 00:00 UT   11 58 19.0   -23 43 56     1.689    2.379  121.4   21.3   101   27.5 
2026-05-28 00:00 UT   11 58 08.9   -23 34 42     1.697    2.377  120.5   21.6   102   27.5 

    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.