2018 RH73
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Opposition	21 Oct 2024	11.0	3.431 AU	2.439 AU	01h40m	+15°56'	174.8°	1.5°
Today	4 Dec 2024	11.8	3.450 AU	2.728 AU	01h16m	+12°57'	130.5°	12.6°

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 2018 RH73 are:

            e (Eccentricity)                : 0.1077209
            a (Semimajor axis)              : 3.1412981
            i (Inclination)                 : 3.82430
            Ω (Longitude of ascending node) : 282.99640
            ω (Argument of perihelion)      : 313.75150
            M (Mean anomaly)                : 38.72367
            Epoch                           : 2023 Feb 25

            L (Longitude of perihelion)     : 236.81170
            B (Latitude of perihelion)      : -2.76149
            P (Orbital period in years)     : 5.57            
        

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. A more printer-friendly version of the same chart can be found below.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2024-12-04 00:00 UT   01 16 46.2   +12 57 01     2.728    3.450  130.5   12.6    72   11.8 
2024-12-04 09:00 UT   01 16 42.5   +12 56 04     2.733    3.450  130.1   12.6    72   11.8 
2024-12-05 00:00 UT   01 16 36.6   +12 54 32     2.740    3.451  129.4   12.7    72   11.8 
2024-12-06 00:00 UT   01 16 28.2   +12 52 10     2.752    3.451  128.4   12.9    71   11.8 
2024-12-07 00:00 UT   01 16 21.0   +12 49 54     2.764    3.451  127.3   13.1    71   11.8 
2024-12-08 00:00 UT   01 16 15.0   +12 47 46     2.777    3.452  126.3   13.3    71   11.8 
2024-12-09 00:00 UT   01 16 10.2   +12 45 45     2.789    3.452  125.2   13.5    71   11.9 
2024-12-10 00:00 UT   01 16 06.6   +12 43 50     2.802    3.453  124.2   13.6    71   11.9 
2024-12-11 00:00 UT   01 16 04.3   +12 42 03     2.815    3.453  123.1   13.8    71   11.9 
2024-12-12 00:00 UT   01 16 03.1   +12 40 22     2.828    3.453  122.1   14.0    71   11.9 
2024-12-13 00:00 UT   01 16 03.1   +12 38 49     2.841    3.454  121.1   14.1    70   11.9 
2024-12-14 00:00 UT   01 16 04.3   +12 37 23     2.854    3.454  120.1   14.3    70   11.9 
2024-12-15 00:00 UT   01 16 06.7   +12 36 03     2.867    3.454  119.1   14.4    70   12.0 
2024-12-16 00:00 UT   01 16 10.3   +12 34 51     2.881    3.455  118.1   14.6    70   12.0 
2024-12-17 00:00 UT   01 16 15.0   +12 33 45     2.894    3.455  117.1   14.7    70   12.0 
2024-12-18 00:00 UT   01 16 20.8   +12 32 47     2.908    3.455  116.1   14.8    70   12.0 
2024-12-19 00:00 UT   01 16 27.9   +12 31 56     2.922    3.456  115.1   14.9    70   12.0 
2024-12-20 00:00 UT   01 16 36.0   +12 31 11     2.936    3.456  114.1   15.1    70   12.0 
2024-12-21 00:00 UT   01 16 45.3   +12 30 34     2.950    3.457  113.1   15.2    70   12.0 
2024-12-22 00:00 UT   01 16 55.8   +12 30 04     2.964    3.457  112.1   15.3    70   12.1 
2024-12-23 00:00 UT   01 17 07.3   +12 29 40     2.978    3.457  111.2   15.4    69   12.1 
2024-12-24 00:00 UT   01 17 20.0   +12 29 23     2.993    3.458  110.2   15.5    69   12.1 
2024-12-25 00:00 UT   01 17 33.8   +12 29 14     3.007    3.458  109.2   15.6    69   12.1 
2024-12-26 00:00 UT   01 17 48.7   +12 29 11     3.022    3.458  108.3   15.7    69   12.1 
2024-12-27 00:00 UT   01 18 04.6   +12 29 15     3.036    3.459  107.3   15.8    69   12.1 
2024-12-28 00:00 UT   01 18 21.7   +12 29 26     3.051    3.459  106.4   15.8    69   12.1 
2024-12-29 00:00 UT   01 18 39.8   +12 29 43     3.065    3.459  105.4   15.9    69   12.2 
2024-12-30 00:00 UT   01 18 59.0   +12 30 07     3.080    3.460  104.5   16.0    69   12.2 
2024-12-31 00:00 UT   01 19 19.2   +12 30 38     3.095    3.460  103.5   16.0    69   12.2 
2025-01-01 00:00 UT   01 19 40.5   +12 31 16     3.110    3.460  102.6   16.1    69   12.2 
2025-01-02 00:00 UT   01 20 02.8   +12 31 59     3.125    3.461  101.7   16.2    69   12.2 
2025-01-03 00:00 UT   01 20 26.2   +12 32 50     3.140    3.461  100.7   16.2    69   12.2 

    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.