2020 AO1
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	16 Dec 2025	28.7	2.279 AU	2.845 AU	20h48m	-15°51'	46.3°	18.2°

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 2020 AO1 are:

            e (Eccentricity)                : 0.6265873
            a (Semimajor axis)              : 1.9067072
            i (Inclination)                 : 4.18814
            Ω (Longitude of ascending node) : 294.38816
            ω (Argument of perihelion)      : 252.40199
            M (Mean anomaly)                : 64.70986
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 6.74595
            B (Latitude of perihelion)      : -3.99181
            P (Orbital period in years)     : 2.63            
        

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
2025-12-16 00:00 UT   20 48 36.3   -15 51 55     2.845    2.279   46.3   18.2    73   28.7 
2025-12-16 10:03 UT   20 49 20.3   -15 48 52     2.851    2.282   46.1   18.1    73   28.7 
2025-12-17 00:00 UT   20 50 21.3   -15 44 37     2.860    2.286   45.8   18.0    73   28.7 
2025-12-18 00:00 UT   20 52 05.9   -15 37 15     2.876    2.292   45.2   17.7    72   28.7 
2025-12-19 00:00 UT   20 53 50.2   -15 29 52     2.892    2.298   44.6   17.5    72   28.7 
2025-12-20 00:00 UT   20 55 34.3   -15 22 25     2.908    2.304   44.0   17.3    72   28.7 
2025-12-21 00:00 UT   20 57 18.0   -15 14 57     2.923    2.310   43.4   17.0    72   28.8 
2025-12-22 00:00 UT   20 59 01.3   -15 07 25     2.938    2.316   42.9   16.8    72   28.8 
2025-12-23 00:00 UT   21 00 44.4   -14 59 52     2.954    2.322   42.3   16.6    72   28.8 
2025-12-24 00:00 UT   21 02 27.2   -14 52 15     2.969    2.328   41.7   16.3    71   28.8 
2025-12-25 00:00 UT   21 04 09.6   -14 44 37     2.984    2.334   41.1   16.1    71   28.8 
2025-12-26 00:00 UT   21 05 51.8   -14 36 56     2.999    2.340   40.5   15.8    71   28.8 
2025-12-27 00:00 UT   21 07 33.6   -14 29 12     3.013    2.346   39.9   15.6    71   28.8 
2025-12-28 00:00 UT   21 09 15.1   -14 21 27     3.028    2.352   39.3   15.4    71   28.8 
2025-12-29 00:00 UT   21 10 56.4   -14 13 39     3.043    2.358   38.8   15.1    70   28.8 
2025-12-30 00:00 UT   21 12 37.3   -14 05 49     3.057    2.364   38.2   14.9    70   28.8 
2025-12-31 00:00 UT   21 14 17.9   -13 57 57     3.071    2.369   37.6   14.7    70   28.8 
2026-01-01 00:00 UT   21 15 58.2   -13 50 03     3.086    2.375   37.0   14.4    70   28.8 
2026-01-02 00:00 UT   21 17 38.2   -13 42 07     3.100    2.381   36.4   14.2    70   28.8 
2026-01-03 00:00 UT   21 19 17.9   -13 34 08     3.114    2.387   35.8   13.9    70   28.9 
2026-01-04 00:00 UT   21 20 57.3   -13 26 08     3.127    2.392   35.2   13.7    69   28.9 

    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.