2019 RO2
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	22 May 2026	29.3	3.108 AU	2.096 AU	15h54m	-21°49'	178.4°	0.5°

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
2026-05-22 00:00 UT   15 54 53.6   -21 49 47     2.096    3.108  178.4    0.5   350   29.3 
2026-05-22 06:10 UT   15 54 36.0   -21 49 00     2.095    3.107  178.5    0.5     1   29.3 
2026-05-23 00:00 UT   15 53 44.8   -21 46 43     2.092    3.104  178.4    0.5    35   29.3 
2026-05-24 00:00 UT   15 52 35.7   -21 43 36     2.088    3.100  177.6    0.8    64   29.3 
2026-05-25 00:00 UT   15 51 26.6   -21 40 26     2.084    3.095  176.6    1.1    77   29.3 
2026-05-26 00:00 UT   15 50 17.3   -21 37 13     2.080    3.091  175.4    1.5    83   29.4 
2026-05-27 00:00 UT   15 49 08.1   -21 33 57     2.077    3.087  174.2    1.9    87   29.4 
2026-05-28 00:00 UT   15 47 58.9   -21 30 39     2.074    3.082  173.0    2.3    90   29.4 
2026-05-29 00:00 UT   15 46 49.8   -21 27 18     2.071    3.078  171.8    2.7    92   29.4 
2026-05-30 00:00 UT   15 45 40.8   -21 23 56     2.069    3.073  170.6    3.1    94   29.4 
2026-05-31 00:00 UT   15 44 32.2   -21 20 31     2.067    3.069  169.4    3.5    95   29.5 
2026-06-01 00:00 UT   15 43 23.8   -21 17 05     2.065    3.065  168.2    3.9    96   29.5 
2026-06-02 00:00 UT   15 42 15.7   -21 13 37     2.064    3.060  167.0    4.3    96   29.5 
2026-06-03 00:00 UT   15 41 08.1   -21 10 08     2.063    3.056  165.7    4.7    97   29.5 
2026-06-04 00:00 UT   15 40 00.9   -21 06 38     2.062    3.051  164.5    5.1    98   29.5 
2026-06-05 00:00 UT   15 38 54.2   -21 03 08     2.061    3.047  163.3    5.5    98   29.6 
2026-06-06 00:00 UT   15 37 48.2   -20 59 36     2.061    3.042  162.1    5.9    99   29.6 
2026-06-07 00:00 UT   15 36 42.7   -20 56 04     2.061    3.038  160.9    6.3    99   29.6 
2026-06-08 00:00 UT   15 35 38.0   -20 52 32     2.061    3.033  159.7    6.7    99   29.6 
2026-06-09 00:00 UT   15 34 33.9   -20 49 01     2.062    3.029  158.5    7.1   100   29.6 
2026-06-10 00:00 UT   15 33 30.7   -20 45 29     2.063    3.024  157.2    7.5   100   29.6 
2026-06-11 00:00 UT   15 32 28.3   -20 41 58     2.064    3.020  156.0    7.8   100   29.6 
2026-06-12 00:00 UT   15 31 26.9   -20 38 28     2.065    3.015  154.8    8.2   101   29.7 
2026-06-13 00:00 UT   15 30 26.4   -20 34 59     2.067    3.011  153.6    8.6   101   29.7 
2026-06-14 00:00 UT   15 29 26.8   -20 31 32     2.069    3.006  152.5    9.0   101   29.7 
2026-06-15 00:00 UT   15 28 28.4   -20 28 06     2.071    3.001  151.3    9.4   101   29.7 
2026-06-16 00:00 UT   15 27 31.0   -20 24 42     2.073    2.997  150.1    9.7   102   29.7 
2026-06-17 00:00 UT   15 26 34.8   -20 21 20     2.076    2.992  148.9   10.1   102   29.7 
2026-06-18 00:00 UT   15 25 39.8   -20 18 01     2.079    2.987  147.7   10.5   102   29.8 
2026-06-19 00:00 UT   15 24 45.9   -20 14 44     2.082    2.983  146.5   10.8   102   29.8 
2026-06-20 00:00 UT   15 23 53.4   -20 11 30     2.085    2.978  145.4   11.2   102   29.8 
2026-06-21 00:00 UT   15 23 02.1   -20 08 19     2.089    2.973  144.2   11.5   102   29.8 

    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.