2017 BH30
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	20 Aug 2026	34.9	3.554 AU	3.120 AU	02h30m	+12°39'	107.2°	15.8°

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 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
2026-08-20 00:00 UT   02 30 42.2   +12 39 07     3.120    3.554  107.2   15.8   252   34.9 
2026-08-20 01:13 UT   02 30 42.4   +12 39 06     3.119    3.554  107.3   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 
2026-08-22 00:00 UT   02 30 49.2   +12 38 19     3.085    3.548  109.1   15.6   252   34.9 
2026-08-23 00:00 UT   02 30 51.1   +12 37 46     3.068    3.545  110.1   15.5   252   34.8 
2026-08-24 00:00 UT   02 30 51.8   +12 37 08     3.051    3.542  111.1   15.4   252   34.8 
2026-08-25 00:00 UT   02 30 51.3   +12 36 24     3.034    3.539  112.0   15.4   253   34.8 
2026-08-26 00:00 UT   02 30 49.6   +12 35 34     3.017    3.537  113.0   15.3   253   34.8 
2026-08-27 00:00 UT   02 30 46.8   +12 34 38     3.000    3.534  114.0   15.1   253   34.8 
2026-08-28 00:00 UT   02 30 42.8   +12 33 36     2.983    3.531  115.0   15.0   253   34.7 
2026-08-29 00:00 UT   02 30 37.6   +12 32 28     2.967    3.528  116.0   14.9   253   34.7 
2026-08-30 00:00 UT   02 30 31.2   +12 31 14     2.950    3.525  117.0   14.8   253   34.7 
2026-08-31 00:00 UT   02 30 23.5   +12 29 54     2.934    3.522  118.0   14.7   253   34.7 
2026-09-01 00:00 UT   02 30 14.7   +12 28 28     2.917    3.519  119.0   14.5   253   34.7 
2026-09-02 00:00 UT   02 30 04.5   +12 26 56     2.901    3.516  120.0   14.4   253   34.7 
2026-09-03 00:00 UT   02 29 53.2   +12 25 17     2.885    3.513  121.0   14.3   253   34.6 
2026-09-04 00:00 UT   02 29 40.5   +12 23 32     2.869    3.510  122.0   14.1   253   34.6 
2026-09-05 00:00 UT   02 29 26.6   +12 21 41     2.853    3.507  123.1   13.9   253   34.6 
2026-09-06 00:00 UT   02 29 11.4   +12 19 43     2.837    3.503  124.1   13.8   253   34.6 
2026-09-07 00:00 UT   02 28 54.8   +12 17 39     2.822    3.500  125.1   13.6   253   34.6 
2026-09-08 00:00 UT   02 28 37.0   +12 15 29     2.807    3.497  126.2   13.4   253   34.5 
2026-09-09 00:00 UT   02 28 17.9   +12 13 12     2.791    3.494  127.2   13.3   253   34.5 
2026-09-10 00:00 UT   02 27 57.5   +12 10 48     2.776    3.491  128.3   13.1   253   34.5 
2026-09-11 00:00 UT   02 27 35.7   +12 08 19     2.761    3.488  129.4   12.9   253   34.5 
2026-09-12 00:00 UT   02 27 12.7   +12 05 42     2.746    3.485  130.4   12.7   253   34.5 
2026-09-13 00:00 UT   02 26 48.3   +12 02 59     2.732    3.481  131.5   12.5   253   34.4 
2026-09-14 00:00 UT   02 26 22.6   +12 00 10     2.717    3.478  132.6   12.3   254   34.4 
2026-09-15 00:00 UT   02 25 55.6   +11 57 14     2.703    3.475  133.7   12.1   254   34.4 
2026-09-16 00:00 UT   02 25 27.3   +11 54 11     2.689    3.472  134.8   11.9   254   34.4 
2026-09-17 00:00 UT   02 24 57.7   +11 51 03     2.675    3.469  135.9   11.6   254   34.3 
2026-09-18 00:00 UT   02 24 26.8   +11 47 47     2.662    3.465  137.0   11.4   254   34.3 
2026-09-19 00:00 UT   02 23 54.6   +11 44 26     2.648    3.462  138.1   11.2   254   34.3 

    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.