2018 RH73
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	27 Jul 2024	12.3	3.380 AU	3.209 AU	01h58m	+16°23'	90.8°	17.5°
Opposition	21 Oct 2024	11.0	3.431 AU	2.439 AU	01h40m	+15°56'	174.8°	1.5°

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 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
2024-07-27 00:00 UT   01 58 37.6   +16 23 42     3.209    3.380   90.8   17.5   250   12.3 
2024-07-27 06:55 UT   01 58 46.8   +16 24 50     3.205    3.380   91.1   17.5   250   12.3 
2024-07-28 00:00 UT   01 59 09.2   +16 27 36     3.196    3.380   91.6   17.5   250   12.2 
2024-07-29 00:00 UT   01 59 39.9   +16 31 26     3.182    3.381   92.4   17.5   250   12.2 
2024-07-30 00:00 UT   02 00 09.7   +16 35 12     3.168    3.382   93.3   17.4   250   12.2 
2024-07-31 00:00 UT   02 00 38.6   +16 38 52     3.155    3.382   94.1   17.4   250   12.2 
2024-08-01 00:00 UT   02 01 06.6   +16 42 28     3.141    3.383   94.9   17.4   250   12.2 
2024-08-02 00:00 UT   02 01 33.6   +16 45 59     3.128    3.384   95.8   17.4   249   12.2 
2024-08-03 00:00 UT   02 01 59.6   +16 49 25     3.114    3.385   96.6   17.3   249   12.2 
2024-08-04 00:00 UT   02 02 24.7   +16 52 46     3.101    3.385   97.4   17.3   249   12.2 
2024-08-05 00:00 UT   02 02 48.8   +16 56 02     3.088    3.386   98.3   17.2   249   12.2 
2024-08-06 00:00 UT   02 03 12.0   +16 59 14     3.074    3.387   99.1   17.2   249   12.2 
2024-08-07 00:00 UT   02 03 34.1   +17 02 20     3.061    3.387  100.0   17.2   249   12.1 
2024-08-08 00:00 UT   02 03 55.2   +17 05 20     3.047    3.388  100.8   17.1   249   12.1 
2024-08-09 00:00 UT   02 04 15.2   +17 08 16     3.034    3.389  101.7   17.0   249   12.1 
2024-08-10 00:00 UT   02 04 34.3   +17 11 06     3.021    3.389  102.6   17.0   249   12.1 
2024-08-11 00:00 UT   02 04 52.3   +17 13 52     3.008    3.390  103.4   16.9   249   12.1 
2024-08-12 00:00 UT   02 05 09.2   +17 16 31     2.994    3.391  104.3   16.8   249   12.1 
2024-08-13 00:00 UT   02 05 25.0   +17 19 05     2.981    3.391  105.2   16.8   249   12.1 
2024-08-14 00:00 UT   02 05 39.8   +17 21 34     2.968    3.392  106.1   16.7   249   12.1 
2024-08-15 00:00 UT   02 05 53.5   +17 23 58     2.955    3.392  107.0   16.6   249   12.1 
2024-08-16 00:00 UT   02 06 06.1   +17 26 15     2.942    3.393  107.9   16.5   249   12.0 
2024-08-17 00:00 UT   02 06 17.6   +17 28 27     2.930    3.394  108.8   16.4   249   12.0 
2024-08-18 00:00 UT   02 06 28.0   +17 30 34     2.917    3.394  109.7   16.3   249   12.0 
2024-08-19 00:00 UT   02 06 37.3   +17 32 34     2.904    3.395  110.6   16.2   248   12.0 
2024-08-20 00:00 UT   02 06 45.4   +17 34 29     2.891    3.396  111.5   16.1   248   12.0 
2024-08-21 00:00 UT   02 06 52.4   +17 36 18     2.879    3.396  112.4   16.0   248   12.0 
2024-08-22 00:00 UT   02 06 58.3   +17 38 01     2.866    3.397  113.4   15.9   248   12.0 
2024-08-23 00:00 UT   02 07 03.0   +17 39 38     2.854    3.398  114.3   15.7   248   12.0 
2024-08-24 00:00 UT   02 07 06.5   +17 41 09     2.842    3.398  115.2   15.6   248   11.9 
2024-08-25 00:00 UT   02 07 08.8   +17 42 34     2.830    3.399  116.2   15.5   248   11.9 
2024-08-26 00:00 UT   02 07 10.0   +17 43 52     2.817    3.399  117.1   15.3   248   11.9 

    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.