2019 RO2
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	28 Jan 2026	31.6	3.505 AU	3.805 AU	16h01m	-21°18'	65.0°	14.8°

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 RO2 are:

            e (Eccentricity)                : 0.5703203
            a (Semimajor axis)              : 2.4245373
            i (Inclination)                 : 1.56476
            Ω (Longitude of ascending node) : 21.86527
            ω (Argument of perihelion)      : 5.27939
            M (Mean anomaly)                : 221.26186
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 27.14270
            B (Latitude of perihelion)      : 0.14396
            P (Orbital period in years)     : 3.78            
        

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
2026-01-28 00:00 UT   16 01 52.8   -21 18 46     3.805    3.505   65.0   14.8   281   31.6 
2026-01-28 15:33 UT   16 02 27.6   -21 20 35     3.794    3.503   65.6   14.8   281   31.6 
2026-01-29 00:00 UT   16 02 46.5   -21 21 33     3.788    3.502   65.8   14.9   281   31.6 
2026-01-30 00:00 UT   16 03 39.6   -21 24 17     3.771    3.499   66.6   15.0   281   31.6 
2026-01-31 00:00 UT   16 04 32.2   -21 26 59     3.754    3.497   67.5   15.1   281   31.5 
2026-02-01 00:00 UT   16 05 24.2   -21 29 38     3.737    3.494   68.3   15.2   281   31.5 
2026-02-02 00:00 UT   16 06 15.7   -21 32 15     3.720    3.491   69.1   15.3   281   31.5 
2026-02-03 00:00 UT   16 07 06.6   -21 34 50     3.702    3.488   69.9   15.4   281   31.5 
2026-02-04 00:00 UT   16 07 56.9   -21 37 22     3.685    3.486   70.7   15.5   281   31.5 
2026-02-05 00:00 UT   16 08 46.6   -21 39 52     3.668    3.483   71.5   15.6   280   31.5 
2026-02-06 00:00 UT   16 09 35.7   -21 42 19     3.650    3.480   72.3   15.7   280   31.5 
2026-02-07 00:00 UT   16 10 24.2   -21 44 44     3.632    3.477   73.2   15.8   280   31.5 
2026-02-08 00:00 UT   16 11 12.0   -21 47 07     3.615    3.474   74.0   15.8   280   31.5 
2026-02-09 00:00 UT   16 11 59.2   -21 49 28     3.597    3.471   74.8   15.9   280   31.5 
2026-02-10 00:00 UT   16 12 45.7   -21 51 46     3.579    3.468   75.6   16.0   280   31.5 
2026-02-11 00:00 UT   16 13 31.5   -21 54 01     3.561    3.466   76.5   16.1   280   31.4 
2026-02-12 00:00 UT   16 14 16.6   -21 56 15     3.543    3.463   77.3   16.1   280   31.4 
2026-02-13 00:00 UT   16 15 01.0   -21 58 26     3.525    3.460   78.1   16.2   280   31.4 
2026-02-14 00:00 UT   16 15 44.7   -22 00 34     3.507    3.457   79.0   16.3   280   31.4 
2026-02-15 00:00 UT   16 16 27.6   -22 02 41     3.489    3.454   79.8   16.3   280   31.4 
2026-02-16 00:00 UT   16 17 09.7   -22 04 44     3.471    3.451   80.7   16.4   280   31.4 
2026-02-17 00:00 UT   16 17 51.1   -22 06 46     3.453    3.448   81.5   16.5   280   31.4 
2026-02-18 00:00 UT   16 18 31.7   -22 08 45     3.434    3.445   82.4   16.5   280   31.4 
2026-02-19 00:00 UT   16 19 11.5   -22 10 42     3.416    3.442   83.2   16.6   280   31.4 
2026-02-20 00:00 UT   16 19 50.4   -22 12 37     3.398    3.439   84.1   16.6   280   31.3 
2026-02-21 00:00 UT   16 20 28.5   -22 14 29     3.379    3.436   84.9   16.7   280   31.3 
2026-02-22 00:00 UT   16 21 05.8   -22 16 19     3.361    3.433   85.8   16.7   280   31.3 
2026-02-23 00:00 UT   16 21 42.2   -22 18 06     3.343    3.430   86.6   16.7   279   31.3 
2026-02-24 00:00 UT   16 22 17.7   -22 19 51     3.324    3.427   87.5   16.8   279   31.3 
2026-02-25 00:00 UT   16 22 52.3   -22 21 34     3.306    3.424   88.4   16.8   279   31.3 
2026-02-26 00:00 UT   16 23 26.0   -22 23 15     3.287    3.421   89.3   16.8   279   31.3 
2026-02-27 00:00 UT   16 23 58.7   -22 24 53     3.269    3.417   90.1   16.8   279   31.3 

    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.