2020 OL4
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	8 Nov 2025	29.2	2.115 AU	3.092 AU	14h19m	-17°52'	7.8°	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 2020 OL4 are:

            e (Eccentricity)                : 0.4309356
            a (Semimajor axis)              : 1.5594536
            i (Inclination)                 : 5.53781
            Ω (Longitude of ascending node) : 316.77499
            ω (Argument of perihelion)      : 56.63102
            M (Mean anomaly)                : 234.69653
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 13.28277
            B (Latitude of perihelion)      : 4.62269
            P (Orbital period in years)     : 1.95            
        

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
2025-11-08 00:00 UT   14 19 45.8   -17 52 07     3.092    2.115    7.8    3.7   261   29.2 
2025-11-08 10:34 UT   14 20 37.1   -17 56 27     3.091    2.114    8.0    3.8   262   29.2 
2025-11-09 00:00 UT   14 21 42.6   -18 01 57     3.088    2.113    8.3    3.9   262   29.2 
2025-11-10 00:00 UT   14 23 39.7   -18 11 45     3.084    2.110    8.8    4.1   264   29.2 
2025-11-11 00:00 UT   14 25 37.3   -18 21 30     3.079    2.108    9.2    4.3   265   29.2 
2025-11-12 00:00 UT   14 27 35.2   -18 31 12     3.074    2.105    9.7    4.5   266   29.3 
2025-11-13 00:00 UT   14 29 33.6   -18 40 52     3.069    2.102   10.2    4.8   267   29.3 
2025-11-14 00:00 UT   14 31 32.3   -18 50 30     3.064    2.100   10.6    5.0   268   29.3 
2025-11-15 00:00 UT   14 33 31.4   -19 00 05     3.059    2.097   11.1    5.2   269   29.3 
2025-11-16 00:00 UT   14 35 30.9   -19 09 37     3.054    2.095   11.6    5.5   269   29.3 
2025-11-17 00:00 UT   14 37 30.8   -19 19 06     3.049    2.092   12.1    5.7   270   29.3 
2025-11-18 00:00 UT   14 39 31.1   -19 28 33     3.043    2.089   12.6    5.9   271   29.3 
2025-11-19 00:00 UT   14 41 31.8   -19 37 56     3.037    2.086   13.1    6.1   271   29.3 
2025-11-20 00:00 UT   14 43 32.8   -19 47 17     3.031    2.084   13.6    6.4   272   29.3 
2025-11-21 00:00 UT   14 45 34.3   -19 56 34     3.026    2.081   14.0    6.6   272   29.3 
2025-11-22 00:00 UT   14 47 36.2   -20 05 49     3.019    2.078   14.5    6.8   273   29.3 
2025-11-23 00:00 UT   14 49 38.5   -20 14 60     3.013    2.075   15.0    7.1   273   29.3 
2025-11-24 00:00 UT   14 51 41.2   -20 24 07     3.007    2.072   15.5    7.3   273   29.3 
2025-11-25 00:00 UT   14 53 44.3   -20 33 12     3.000    2.069   16.0    7.6   273   29.3 

    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.