2019 RJ1
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	10 Jan 2026	33.7	3.843 AU	4.217 AU	15h02m	-17°11'	61.3°	13.0°

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 2019 RJ1 are:

            e (Eccentricity)                : 0.6122259
            a (Semimajor axis)              : 2.4715937
            i (Inclination)                 : 1.21314
            Ω (Longitude of ascending node) : 213.86100
            ω (Argument of perihelion)      : 168.84466
            M (Mean anomaly)                : 207.10788
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 202.70810
            B (Latitude of perihelion)      : 0.23469
            P (Orbital period in years)     : 3.89            
        

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
2026-01-10 00:00 UT   15 02 28.6   -17 11 26     4.217    3.843   61.3   13.0   286   33.7 
2026-01-10 07:40 UT   15 02 43.6   -17 12 26     4.212    3.843   61.6   13.0   286   33.7 
2026-01-11 00:00 UT   15 03 15.2   -17 14 33     4.202    3.841   62.1   13.1   286   33.7 
2026-01-12 00:00 UT   15 04 01.4   -17 17 37     4.185    3.840   63.0   13.2   286   33.7 
2026-01-13 00:00 UT   15 04 47.0   -17 20 38     4.169    3.838   63.8   13.3   286   33.7 
2026-01-14 00:00 UT   15 05 32.1   -17 23 36     4.153    3.836   64.6   13.4   286   33.7 
2026-01-15 00:00 UT   15 06 16.6   -17 26 31     4.137    3.834   65.5   13.5   286   33.7 
2026-01-16 00:00 UT   15 07 00.7   -17 29 24     4.120    3.832   66.3   13.6   286   33.7 
2026-01-17 00:00 UT   15 07 44.1   -17 32 13     4.104    3.830   67.1   13.7   286   33.7 
2026-01-18 00:00 UT   15 08 27.0   -17 34 59     4.087    3.828   68.0   13.8   286   33.7 
2026-01-19 00:00 UT   15 09 09.4   -17 37 42     4.070    3.826   68.8   13.9   286   33.7 
2026-01-20 00:00 UT   15 09 51.1   -17 40 22     4.053    3.824   69.7   14.0   286   33.6 
2026-01-21 00:00 UT   15 10 32.2   -17 42 59     4.036    3.823   70.5   14.0   286   33.6 
2026-01-22 00:00 UT   15 11 12.7   -17 45 33     4.019    3.821   71.4   14.1   286   33.6 
2026-01-23 00:00 UT   15 11 52.6   -17 48 04     4.002    3.819   72.2   14.2   285   33.6 
2026-01-24 00:00 UT   15 12 31.8   -17 50 31     3.985    3.817   73.1   14.3   285   33.6 
2026-01-25 00:00 UT   15 13 10.4   -17 52 55     3.968    3.815   73.9   14.4   285   33.6 
2026-01-26 00:00 UT   15 13 48.3   -17 55 16     3.951    3.813   74.8   14.4   285   33.6 
2026-01-27 00:00 UT   15 14 25.5   -17 57 34     3.933    3.811   75.7   14.5   285   33.6 
2026-01-28 00:00 UT   15 15 02.1   -17 59 49     3.916    3.809   76.5   14.6   285   33.6 
2026-01-29 00:00 UT   15 15 37.9   -18 02 00     3.898    3.807   77.4   14.6   285   33.6 
2026-01-30 00:00 UT   15 16 13.1   -18 04 09     3.880    3.804   78.3   14.7   285   33.6 
2026-01-31 00:00 UT   15 16 47.5   -18 06 13     3.863    3.802   79.1   14.7   285   33.6 
2026-02-01 00:00 UT   15 17 21.2   -18 08 15     3.845    3.800   80.0   14.8   285   33.5 
2026-02-02 00:00 UT   15 17 54.1   -18 10 13     3.827    3.798   80.9   14.8   285   33.5 
2026-02-03 00:00 UT   15 18 26.3   -18 12 08     3.810    3.796   81.8   14.9   285   33.5 
2026-02-04 00:00 UT   15 18 57.7   -18 13 60     3.792    3.794   82.7   14.9   285   33.5 
2026-02-05 00:00 UT   15 19 28.3   -18 15 48     3.774    3.792   83.6   15.0   285   33.5 
2026-02-06 00:00 UT   15 19 58.2   -18 17 32     3.756    3.790   84.5   15.0   285   33.5 
2026-02-07 00:00 UT   15 20 27.2   -18 19 14     3.738    3.788   85.3   15.0   285   33.5 
2026-02-08 00:00 UT   15 20 55.4   -18 20 51     3.720    3.785   86.2   15.1   285   33.5 
2026-02-09 00:00 UT   15 21 22.7   -18 22 26     3.702    3.783   87.1   15.1   285   33.5 

    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.