2017 BH30
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	22 Jul 2026	35.3	3.630 AU	3.634 AU	02h21m	+12°11'	81.7°	16.1°

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 2017 BH30 are:

            e (Eccentricity)                : 0.6567400
            a (Semimajor axis)              : 2.3192917
            i (Inclination)                 : 1.89068
            Ω (Longitude of ascending node) : 128.90221
            ω (Argument of perihelion)      : 57.96076
            M (Mean anomaly)                : 161.99986
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 186.84894
            B (Latitude of perihelion)      : 1.60262
            P (Orbital period in years)     : 3.53            
        

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
2026-07-22 00:00 UT   02 21 37.9   +12 11 59     3.634    3.630   81.7   16.1   251   35.3 
2026-07-22 23:27 UT   02 22 07.8   +12 13 57     3.617    3.628   82.5   16.1   251   35.3 
2026-07-23 00:00 UT   02 22 08.5   +12 13 60     3.617    3.627   82.5   16.1   251   35.3 
2026-07-24 00:00 UT   02 22 38.3   +12 15 57     3.599    3.625   83.4   16.2   251   35.3 
2026-07-25 00:00 UT   02 23 07.4   +12 17 50     3.581    3.623   84.2   16.2   251   35.2 
2026-07-26 00:00 UT   02 23 35.7   +12 19 39     3.564    3.620   85.0   16.2   251   35.2 
2026-07-27 00:00 UT   02 24 03.3   +12 21 23     3.546    3.618   85.9   16.3   251   35.2 
2026-07-28 00:00 UT   02 24 30.1   +12 23 03     3.528    3.615   86.7   16.3   251   35.2 
2026-07-29 00:00 UT   02 24 56.2   +12 24 38     3.510    3.613   87.6   16.3   251   35.2 
2026-07-30 00:00 UT   02 25 21.4   +12 26 09     3.493    3.610   88.4   16.3   251   35.2 
2026-07-31 00:00 UT   02 25 45.9   +12 27 35     3.475    3.608   89.3   16.3   251   35.2 
2026-08-01 00:00 UT   02 26 09.5   +12 28 57     3.457    3.605   90.1   16.4   251   35.2 
2026-08-02 00:00 UT   02 26 32.2   +12 30 14     3.439    3.602   91.0   16.4   251   35.1 
2026-08-03 00:00 UT   02 26 54.2   +12 31 27     3.421    3.600   91.9   16.4   251   35.1 
2026-08-04 00:00 UT   02 27 15.2   +12 32 35     3.403    3.597   92.7   16.4   252   35.1 
2026-08-05 00:00 UT   02 27 35.4   +12 33 38     3.386    3.595   93.6   16.4   252   35.1 
2026-08-06 00:00 UT   02 27 54.7   +12 34 36     3.368    3.592   94.5   16.4   252   35.1 
2026-08-07 00:00 UT   02 28 13.1   +12 35 29     3.350    3.589   95.4   16.3   252   35.1 
2026-08-08 00:00 UT   02 28 30.5   +12 36 17     3.332    3.587   96.2   16.3   252   35.1 
2026-08-09 00:00 UT   02 28 47.1   +12 37 00     3.314    3.584   97.1   16.3   252   35.1 
2026-08-10 00:00 UT   02 29 02.6   +12 37 38     3.296    3.581   98.0   16.3   252   35.0 
2026-08-11 00:00 UT   02 29 17.2   +12 38 11     3.278    3.579   98.9   16.2   252   35.0 
2026-08-12 00:00 UT   02 29 30.8   +12 38 39     3.261    3.576   99.8   16.2   252   35.0 
2026-08-13 00:00 UT   02 29 43.4   +12 39 01     3.243    3.573  100.7   16.2   252   35.0 
2026-08-14 00:00 UT   02 29 54.9   +12 39 18     3.225    3.571  101.7   16.1   252   35.0 
2026-08-15 00:00 UT   02 30 05.5   +12 39 30     3.208    3.568  102.6   16.1   252   35.0 
2026-08-16 00:00 UT   02 30 14.9   +12 39 36     3.190    3.565  103.5   16.0   252   34.9 
2026-08-17 00:00 UT   02 30 23.4   +12 39 37     3.172    3.562  104.4   16.0   252   34.9 
2026-08-18 00:00 UT   02 30 30.7   +12 39 33     3.155    3.559  105.4   15.9   252   34.9 
2026-08-19 00:00 UT   02 30 37.0   +12 39 23     3.137    3.557  106.3   15.9   252   34.9 
2026-08-20 00:00 UT   02 30 42.2   +12 39 07     3.120    3.554  107.2   15.8   252   34.9 
2026-08-21 00:00 UT   02 30 46.3   +12 38 46     3.103    3.551  108.2   15.7   252   34.9 

    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.