A861 HC
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	21 Nov 2024	11.1	2.551 AU	1.638 AU	05h37m	+10°42'	151.6°	10.6°
Opposition	11 Dec 2024	10.7	2.530 AU	1.562 AU	05h22m	+09°35'	166.4°	5.2°

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 A861 HC are:

            e (Eccentricity)                : 0.1701533
            a (Semimajor axis)              : 2.9747967
            i (Inclination)                 : 8.59300
            Ω (Longitude of ascending node) : 184.98781
            ω (Argument of perihelion)      : 288.85367
            M (Mean anomaly)                : 171.79336
            Epoch                           : 2022 Aug 09

            L (Longitude of perihelion)     : 114.04017
            B (Latitude of perihelion)      : -8.12875
            P (Orbital period in years)     : 5.13            
        

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
2024-11-21 00:00 UT   05 37 59.7   +10 42 44     1.638    2.551  151.6   10.6   292   11.1 
2024-11-21 13:08 UT   05 37 39.7   +10 40 26     1.635    2.550  152.2   10.4   293   11.1 
2024-11-22 00:00 UT   05 37 22.9   +10 38 32     1.632    2.550  152.6   10.3   293   11.1 
2024-11-23 00:00 UT   05 36 44.9   +10 34 23     1.626    2.549  153.6    9.9   295   11.0 
2024-11-24 00:00 UT   05 36 05.5   +10 30 20     1.620    2.548  154.6    9.6   296   11.0 
2024-11-25 00:00 UT   05 35 25.0   +10 26 21     1.615    2.547  155.6    9.2   298   11.0 
2024-11-26 00:00 UT   05 34 43.3   +10 22 27     1.610    2.546  156.5    8.9   299   11.0 
2024-11-27 00:00 UT   05 34 00.4   +10 18 39     1.605    2.545  157.5    8.5   301   10.9 
2024-11-28 00:00 UT   05 33 16.5   +10 14 56     1.600    2.544  158.4    8.2   303   10.9 
2024-11-29 00:00 UT   05 32 31.6   +10 11 19     1.596    2.542  159.3    7.9   305   10.9 
2024-11-30 00:00 UT   05 31 45.7   +10 07 48     1.591    2.541  160.2    7.6   308   10.9 
2024-12-01 00:00 UT   05 30 58.9   +10 04 23     1.587    2.540  161.1    7.2   310   10.9 
2024-12-02 00:00 UT   05 30 11.2   +10 01 05     1.584    2.539  161.9    6.9   313   10.8 
2024-12-03 00:00 UT   05 29 22.8   +09 57 53     1.580    2.538  162.6    6.7   316   10.8 
2024-12-04 00:00 UT   05 28 33.7   +09 54 49     1.577    2.537  163.4    6.4   319   10.8 
2024-12-05 00:00 UT   05 27 43.9   +09 51 51     1.574    2.536  164.0    6.1   323   10.8 
2024-12-06 00:00 UT   05 26 53.5   +09 49 00     1.572    2.535  164.6    5.9   327   10.8 
2024-12-07 00:00 UT   05 26 02.7   +09 46 17     1.569    2.534  165.2    5.7   331   10.8 
2024-12-08 00:00 UT   05 25 11.4   +09 43 42     1.567    2.533  165.6    5.5   335   10.7 
2024-12-09 00:00 UT   05 24 19.8   +09 41 14     1.566    2.532  166.0    5.4   340   10.7 
2024-12-10 00:00 UT   05 23 27.8   +09 38 54     1.564    2.532  166.2    5.3   345   10.7 
2024-12-11 00:00 UT   05 22 35.7   +09 36 42     1.563    2.531  166.4    5.2   350   10.7 
2024-12-12 00:00 UT   05 21 43.3   +09 34 38     1.562    2.530  166.5    5.2   355   10.7 
2024-12-13 00:00 UT   05 20 50.9   +09 32 42     1.561    2.529  166.4    5.3     0   10.7 
2024-12-14 00:00 UT   05 19 58.5   +09 30 55     1.561    2.528  166.2    5.3     6   10.7 
2024-12-15 00:00 UT   05 19 06.2   +09 29 15     1.561    2.527  166.0    5.4    11   10.7 
2024-12-16 00:00 UT   05 18 13.9   +09 27 45     1.561    2.526  165.6    5.6    15   10.7 
2024-12-17 00:00 UT   05 17 21.9   +09 26 23     1.561    2.525  165.2    5.7    20   10.7 
2024-12-18 00:00 UT   05 16 30.1   +09 25 09     1.562    2.524  164.6    5.9    24   10.7 
2024-12-19 00:00 UT   05 15 38.6   +09 24 05     1.563    2.523  164.0    6.2    28   10.8 
2024-12-20 00:00 UT   05 14 47.5   +09 23 09     1.564    2.522  163.3    6.4    31   10.8 
2024-12-21 00:00 UT   05 13 56.9   +09 22 22     1.565    2.521  162.6    6.7    35   10.8 

    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.