C/2020 O2 (Amaral)
ephemeris	date	magn	radius	delta	ra	dec	elong	phase	PA
Nearest approach	10 Jun 2021	15.4	4.896 AU	3.882 AU	16h59m	-22°33'	176.2°	0.8°	98°
Perihelion	27 Aug 2021	15.7	4.858 AU	4.688 AU	16h30m	-11°42'	93.6°	12.0°	99°
Today	5 Feb 2025	20.7	10.181 AU	10.376 AU	21h39m	+59°51'	75.9°	5.4°	6°

The interactive orbit chart above shows the comet'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 C/2020 O2 (Amaral) are:

            e (Eccentricity)                : 0.9999390
            q (Perihelion distance)         : 4.8582250
            i (Inclination)                 : 71.76150
            Ω (Longitude of ascending node) : 256.79480
            ω (Argument of perihelion)      : 10.20130
            L (Longitude of perihelion)     : 260.01830
            B (Latitude of perihelion)      : 9.68374
            T (Time of perihelion passage)  : 2459454.03010

            Epoch                           : 2025 Feb 04
            Reference                       : MPEC 2024-JU4

            Classification(s):              : Nearly isotropic; New (a > 10000 AU)
        

The light curve chart below shows the estimated development of the comet's magnitude. Blue and black dots are visual and photometric CCD observations respectively from COBS or the MPC. The gray curve is based on the absolute magnitude and slope parameter as calculated from the original MPEC, or the latest values provided by the MPC (8.00 + 5 log[∆] + 8.00 log[r]), whereas the red curve is being recalculated every 6 hours based on the available COBS/MPC observations (currently 5.52 + 5 log[∆] + 10.00 log[r]).

The all-sky chart below shows the path of the comet over the same period as the light curve. The comet's current position is marked yellow.

The following chart shows the short-term path of the comet in a field of view that is optimized for (~10x50) binoculars and finderscopes.
A more printer-friendly version of the same chart can be found further down this page as well.

The following chart shows the current location of the comet in a smaller, upside-down telescopic field of view.

A printable version of the short-term path of the comet in a field of view that is optimized for (~10x50) binoculars and finderscopes.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2025-02-05 00:00 UT   21 38 36.7   +59 50 41    10.371   10.178   76.0    5.4     6   20.7 
2025-02-05 12:02 UT   21 39 04.6   +59 51 07    10.376   10.181   75.9    5.4     6   20.7 
2025-02-06 00:00 UT   21 39 32.4   +59 51 35    10.382   10.183   75.7    5.4     5   20.7 
2025-02-07 00:00 UT   21 40 28.0   +59 52 33    10.393   10.189   75.4    5.4     5   20.7 
2025-02-08 00:00 UT   21 41 23.7   +59 53 35    10.404   10.194   75.0    5.4     4   20.7 
2025-02-09 00:00 UT   21 42 19.3   +59 54 41    10.415   10.200   74.7    5.4     3   20.7 
2025-02-10 00:00 UT   21 43 14.9   +59 55 52    10.426   10.205   74.4    5.3     2   20.7 
2025-02-11 00:00 UT   21 44 10.5   +59 57 07    10.437   10.211   74.1    5.3     2   20.7 
2025-02-12 00:00 UT   21 45 06.1   +59 58 26    10.448   10.216   73.8    5.3     1   20.7 
2025-02-13 00:00 UT   21 46 01.6   +59 59 48    10.459   10.222   73.5    5.3     0   20.7 
2025-02-14 00:00 UT   21 46 57.1   +60 01 15    10.470   10.227   73.1    5.3   359   20.7 
2025-02-15 00:00 UT   21 47 52.6   +60 02 46    10.480   10.233   72.8    5.3   358   20.7 

    Terminology:
            
    delta:  distance between comet and earth in AU
    radius: distance between comet 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-comet)    
    phase:  phase angle in degrees (angle sun-comet-earth)        
    AU:     Astronomical Unit (mean distance between earth and sun: 149597870.7 km      
    

Orbital elements usually provided by the MPC (Minor Planet Center).
Observations contributed by observers worldwide, via COBS (Comet Observation Database) or 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.