A858 BA
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	3 Dec 2024	11.5	2.316 AU	1.575 AU	08h02m	+05°57'	128.0°	19.6°
Opposition	14 Jan 2025	10.6	2.286 AU	1.323 AU	07h34m	+06°07'	164.7°	6.5°

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 A858 BA are:

            e (Eccentricity)                : 0.0674647
            a (Semimajor axis)              : 2.3652141
            i (Inclination)                 : 9.97936
            Ω (Longitude of ascending node) : 175.95573
            ω (Argument of perihelion)      : 1.79714
            M (Mean anomaly)                : 61.95944
            Epoch                           : 2022 Aug 09

            L (Longitude of perihelion)     : 177.72570
            B (Latitude of perihelion)      : 0.31138
            P (Orbital period in years)     : 3.64            
        

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
2024-12-03 00:00 UT   08 02 28.3   +05 57 48     1.575    2.316  128.0   19.6   293   11.5 
2024-12-03 18:02 UT   08 02 23.4   +05 54 58     1.568    2.316  128.8   19.4   294   11.4 
2024-12-04 00:00 UT   08 02 21.6   +05 54 03     1.565    2.316  129.0   19.3   294   11.4 
2024-12-05 00:00 UT   08 02 13.1   +05 50 26     1.555    2.315  130.0   19.0   294   11.4 
2024-12-06 00:00 UT   08 02 02.7   +05 46 58     1.546    2.314  130.9   18.8   295   11.4 
2024-12-07 00:00 UT   08 01 50.5   +05 43 40     1.536    2.314  131.9   18.5   295   11.4 
2024-12-08 00:00 UT   08 01 36.4   +05 40 32     1.527    2.313  132.9   18.2   296   11.4 
2024-12-09 00:00 UT   08 01 20.4   +05 37 34     1.518    2.312  133.9   17.9   296   11.3 
2024-12-10 00:00 UT   08 01 02.6   +05 34 46     1.508    2.311  134.9   17.6   297   11.3 
2024-12-11 00:00 UT   08 00 43.0   +05 32 08     1.500    2.311  135.9   17.3   298   11.3 
2024-12-12 00:00 UT   08 00 21.6   +05 29 41     1.491    2.310  136.9   16.9   298   11.3 
2024-12-13 00:00 UT   07 59 58.3   +05 27 25     1.482    2.309  137.9   16.6   299   11.2 
2024-12-14 00:00 UT   07 59 33.3   +05 25 19     1.474    2.308  138.9   16.3   300   11.2 
2024-12-15 00:00 UT   07 59 06.5   +05 23 25     1.466    2.308  139.9   15.9   300   11.2 
2024-12-16 00:00 UT   07 58 37.9   +05 21 43     1.458    2.307  141.0   15.6   301   11.2 
2024-12-17 00:00 UT   07 58 07.5   +05 20 12     1.450    2.306  142.0   15.2   302   11.1 
2024-12-18 00:00 UT   07 57 35.4   +05 18 53     1.442    2.306  143.0   14.9   303   11.1 
2024-12-19 00:00 UT   07 57 01.6   +05 17 47     1.435    2.305  144.0   14.5   303   11.1 
2024-12-20 00:00 UT   07 56 26.2   +05 16 52     1.428    2.304  145.0   14.2   304   11.1 
2024-12-21 00:00 UT   07 55 49.0   +05 16 10     1.421    2.303  146.1   13.8   305   11.0 
2024-12-22 00:00 UT   07 55 10.3   +05 15 41     1.414    2.303  147.1   13.4   306   11.0 
2024-12-23 00:00 UT   07 54 29.9   +05 15 25     1.407    2.302  148.1   13.0   307   11.0 
2024-12-24 00:00 UT   07 53 48.0   +05 15 22     1.401    2.301  149.1   12.7   309   11.0 
2024-12-25 00:00 UT   07 53 04.6   +05 15 31     1.395    2.301  150.1   12.3   310   10.9 
2024-12-26 00:00 UT   07 52 19.8   +05 15 55     1.389    2.300  151.1   11.9   311   10.9 
2024-12-27 00:00 UT   07 51 33.5   +05 16 31     1.383    2.299  152.1   11.5   313   10.9 
2024-12-28 00:00 UT   07 50 45.8   +05 17 21     1.378    2.298  153.1   11.2   314   10.9 
2024-12-29 00:00 UT   07 49 56.9   +05 18 25     1.373    2.298  154.1   10.8   316   10.8 
2024-12-30 00:00 UT   07 49 06.7   +05 19 42     1.368    2.297  155.0   10.4   317   10.8 
2024-12-31 00:00 UT   07 48 15.3   +05 21 13     1.363    2.296  156.0   10.0   319   10.8 
2025-01-01 00:00 UT   07 47 22.8   +05 22 57     1.359    2.296  156.9    9.7   321   10.8 
2025-01-02 00:00 UT   07 46 29.2   +05 24 56     1.354    2.295  157.8    9.3   323   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.