2021 RL3
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	30 May 2026	29.4	3.731 AU	2.812 AU	18h13m	-08°45'	151.0°	7.6°

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 2021 RL3 are:

            e (Eccentricity)                : 0.7488543
            a (Semimajor axis)              : 2.1515192
            i (Inclination)                 : 10.98070
            Ω (Longitude of ascending node) : 175.19827
            ω (Argument of perihelion)      : 275.87163
            M (Mean anomaly)                : 100.78555
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 91.17862
            B (Latitude of perihelion)      : -10.92238
            P (Orbital period in years)     : 3.16            
        

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
2026-05-30 00:00 UT   18 13 56.2   -08 45 48     2.812    3.731  151.0    7.6   240   29.4 
2026-05-30 20:10 UT   18 13 10.3   -08 44 25     2.807    3.732  151.9    7.4   239   29.3 
2026-05-31 00:00 UT   18 13 01.6   -08 44 09     2.806    3.732  152.0    7.3   239   29.3 
2026-06-01 00:00 UT   18 12 06.1   -08 42 34     2.801    3.733  153.0    7.1   238   29.3 
2026-06-02 00:00 UT   18 11 10.0   -08 41 04     2.796    3.734  154.0    6.8   236   29.3 
2026-06-03 00:00 UT   18 10 13.1   -08 39 37     2.791    3.735  154.9    6.6   235   29.3 
2026-06-04 00:00 UT   18 09 15.6   -08 38 15     2.787    3.736  155.8    6.4   233   29.3 
2026-06-05 00:00 UT   18 08 17.4   -08 36 57     2.783    3.737  156.8    6.1   231   29.3 
2026-06-06 00:00 UT   18 07 18.6   -08 35 44     2.779    3.738  157.7    5.9   229   29.3 
2026-06-07 00:00 UT   18 06 19.3   -08 34 35     2.776    3.738  158.5    5.7   227   29.2 
2026-06-08 00:00 UT   18 05 19.5   -08 33 30     2.772    3.739  159.4    5.5   225   29.2 
2026-06-09 00:00 UT   18 04 19.1   -08 32 30     2.769    3.740  160.2    5.3   222   29.2 
2026-06-10 00:00 UT   18 03 18.4   -08 31 35     2.767    3.741  160.9    5.1   219   29.2 
2026-06-11 00:00 UT   18 02 17.2   -08 30 44     2.765    3.742  161.6    4.9   216   29.2 
2026-06-12 00:00 UT   18 01 15.6   -08 29 58     2.763    3.743  162.3    4.7   213   29.2 
2026-06-13 00:00 UT   18 00 13.8   -08 29 16     2.761    3.743  162.9    4.6   210   29.2 
2026-06-14 00:00 UT   17 59 11.6   -08 28 40     2.759    3.744  163.4    4.4   206   29.2 
2026-06-15 00:00 UT   17 58 09.2   -08 28 08     2.758    3.745  163.9    4.3   202   29.2 
2026-06-16 00:00 UT   17 57 06.7   -08 27 41     2.758    3.746  164.3    4.2   198   29.2 
2026-06-17 00:00 UT   17 56 03.9   -08 27 18     2.757    3.746  164.6    4.1   194   29.2 
2026-06-18 00:00 UT   17 55 01.1   -08 27 01     2.757    3.747  164.8    4.1   189   29.2 
2026-06-19 00:00 UT   17 53 58.3   -08 26 48     2.757    3.748  165.0    4.0   185   29.1 
2026-06-20 00:00 UT   17 52 55.4   -08 26 40     2.758    3.748  165.0    4.0   180   29.1 
2026-06-21 00:00 UT   17 51 52.6   -08 26 37     2.758    3.749  165.0    4.0   176   29.2 
2026-06-22 00:00 UT   17 50 49.8   -08 26 39     2.760    3.750  164.8    4.1   171   29.2 
2026-06-23 00:00 UT   17 49 47.2   -08 26 46     2.761    3.750  164.6    4.1   167   29.2 
2026-06-24 00:00 UT   17 48 44.7   -08 26 57     2.763    3.751  164.2    4.2   162   29.2 
2026-06-25 00:00 UT   17 47 42.5   -08 27 13     2.765    3.752  163.8    4.3   158   29.2 
2026-06-26 00:00 UT   17 46 40.4   -08 27 34     2.767    3.752  163.3    4.5   154   29.2 
2026-06-27 00:00 UT   17 45 38.7   -08 27 60     2.770    3.753  162.8    4.6   151   29.2 
2026-06-28 00:00 UT   17 44 37.3   -08 28 30     2.773    3.753  162.2    4.8   147   29.2 
2026-06-29 00:00 UT   17 43 36.3   -08 29 05     2.776    3.754  161.5    4.9   144   29.2 

    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.