2020 RA4
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	18 Jun 2026	32.9	3.494 AU	3.308 AU	11h47m	-03°04'	92.0°	16.9°

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 RA4 are:

            e (Eccentricity)                : 0.5578840
            a (Semimajor axis)              : 2.3287101
            i (Inclination)                 : 9.80770
            Ω (Longitude of ascending node) : 352.66060
            ω (Argument of perihelion)      : 8.83015
            M (Mean anomaly)                : 162.46033
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 1.36369
            B (Latitude of perihelion)      : 1.49837
            P (Orbital period in years)     : 3.55            
        

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
2026-06-18 00:00 UT   11 47 48.8   -03 04 31     3.308    3.494   92.0   16.9   113   32.9 
2026-06-18 21:39 UT   11 48 05.3   -03 06 13     3.320    3.492   91.2   16.9   113   32.9 
2026-06-19 00:00 UT   11 48 07.2   -03 06 25     3.321    3.492   91.1   16.9   113   32.9 
2026-06-20 00:00 UT   11 48 26.5   -03 08 25     3.334    3.490   90.3   16.9   113   32.9 
2026-06-21 00:00 UT   11 48 46.8   -03 10 31     3.348    3.488   89.4   16.9   114   32.9 
2026-06-22 00:00 UT   11 49 07.9   -03 12 43     3.361    3.486   88.5   16.9   114   32.9 
2026-06-23 00:00 UT   11 49 29.9   -03 15 00     3.374    3.484   87.7   16.9   114   33.0 
2026-06-24 00:00 UT   11 49 52.8   -03 17 24     3.387    3.482   86.8   16.9   114   33.0 
2026-06-25 00:00 UT   11 50 16.5   -03 19 53     3.400    3.480   86.0   16.9   114   33.0 
2026-06-26 00:00 UT   11 50 41.1   -03 22 27     3.414    3.478   85.2   16.9   114   33.0 
2026-06-27 00:00 UT   11 51 06.5   -03 25 07     3.427    3.476   84.3   16.9   114   33.0 
2026-06-28 00:00 UT   11 51 32.8   -03 27 53     3.440    3.474   83.5   16.9   114   33.0 
2026-06-29 00:00 UT   11 51 59.8   -03 30 44     3.453    3.472   82.7   16.9   114   33.0 
2026-06-30 00:00 UT   11 52 27.7   -03 33 40     3.466    3.470   81.8   16.9   114   33.0 
2026-07-01 00:00 UT   11 52 56.3   -03 36 41     3.479    3.468   81.0   16.8   114   33.0 
2026-07-02 00:00 UT   11 53 25.7   -03 39 48     3.492    3.466   80.2   16.8   114   33.0 
2026-07-03 00:00 UT   11 53 55.9   -03 42 60     3.505    3.464   79.4   16.8   114   33.0 
2026-07-04 00:00 UT   11 54 26.9   -03 46 17     3.517    3.462   78.6   16.7   114   33.0 
2026-07-05 00:00 UT   11 54 58.6   -03 49 39     3.530    3.460   77.8   16.7   114   33.0 
2026-07-06 00:00 UT   11 55 31.0   -03 53 06     3.543    3.458   77.0   16.6   114   33.0 
2026-07-07 00:00 UT   11 56 04.2   -03 56 38     3.555    3.456   76.1   16.6   114   33.0 
2026-07-08 00:00 UT   11 56 38.1   -04 00 14     3.568    3.454   75.4   16.5   115   33.0 
2026-07-09 00:00 UT   11 57 12.7   -04 03 56     3.580    3.452   74.6   16.5   115   33.0 
2026-07-10 00:00 UT   11 57 48.0   -04 07 43     3.593    3.450   73.8   16.4   115   33.0 
2026-07-11 00:00 UT   11 58 24.0   -04 11 34     3.605    3.447   73.0   16.4   115   33.1 
2026-07-12 00:00 UT   11 59 00.7   -04 15 30     3.617    3.445   72.2   16.3   115   33.1 
2026-07-13 00:00 UT   11 59 38.1   -04 19 31     3.630    3.443   71.4   16.3   115   33.1 
2026-07-14 00:00 UT   12 00 16.1   -04 23 36     3.642    3.441   70.6   16.2   115   33.1 
2026-07-15 00:00 UT   12 00 54.9   -04 27 46     3.654    3.439   69.9   16.1   115   33.1 
2026-07-16 00:00 UT   12 01 34.2   -04 32 00     3.666    3.436   69.1   16.0   115   33.1 
2026-07-17 00:00 UT   12 02 14.2   -04 36 19     3.678    3.434   68.3   16.0   115   33.1 
2026-07-18 00:00 UT   12 02 54.9   -04 40 43     3.689    3.432   67.5   15.9   115   33.1 

    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.