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C/2022 N1 (Attard-Maury)
ephemeris date magn radius delta ra dec elong phase PA
Nearest approach23 Jul 202217.81.621 AU0.613 AU 19h20m-17°50'168.4°7.2°103°
Perihelion9 Sep 202219.61.479 AU1.710 AU 15h02m-08°15'59.4°35.9°101°
Today19 Dec 202532.010.666 AU9.865 AU 08h28m+18°59'142.9°3.2°284°
C/2022 N1 (Attard-Maury)- 2025-12-19
astro.vanbuitenen.nl


 
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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.)


Light curve

The light curve chart below shows the estimated development of the comet's magnitude. Blue and black dots are visual and photometric CCD observations from COBS. This lightcurve is being recalculated every 6 hours based on the available COBS/MPC observations (currently 16.8 + 5 log[∆] + 10.0 log[r]). An additional green curve is displayed when an increase in apparent brightness is expected due to forward scattering of sunlight, which occurs when a dust-rich comet is located between the Earth and the Sun. (See Marcus 2007)



Charts

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.




Orbital elements

The orbital elements of C/2022 N1 (Attard-Maury) are: 

    e (Eccentricity)                : 0.9594580
    q (Perihelion distance)         : 1.4789340
    i (Inclination)                 : 164.72510
    Ω (Longitude of ascending node) : 301.87890
    ω (Argument of perihelion)      : 40.97830
    L (Longitude of perihelion)     : 261.91804
    B (Latitude of perihelion)      : 9.94855
    T (Time of perihelion passage)  : 2459832.02180
    P (Orbital period in years)     : 220.33

    Epoch                           : 2025 Nov 12
    Reference                       : MPC186629

    Classification(s):              : Nearly isotropic; Returning (a < 10000 AU); External (P > 200 years)

Ephemerides

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2025-12-18 00:00 UT   08 28 48.9   +18 57 09     9.872   10.656  141.1    3.3   284   32.0 
2025-12-19 00:00 UT   08 28 24.7   +18 58 18     9.867   10.662  142.2    3.2   284   32.0 
2025-12-19 14:48 UT   08 28 09.6   +18 59 01     9.865   10.666  142.9    3.2   284   32.0 
2025-12-20 00:00 UT   08 28 00.1   +18 59 28     9.863   10.669  143.3    3.2   284   32.0 
2025-12-21 00:00 UT   08 27 35.3   +19 00 39     9.859   10.675  144.4    3.1   284   32.0 
2025-12-22 00:00 UT   08 27 10.2   +19 01 50     9.855   10.681  145.5    3.0   284   32.0 
2025-12-23 00:00 UT   08 26 44.8   +19 03 02     9.852   10.687  146.7    2.9   284   32.0 
2025-12-24 00:00 UT   08 26 19.2   +19 04 15     9.848   10.694  147.8    2.8   284   32.0 
2025-12-25 00:00 UT   08 25 53.3   +19 05 29     9.845   10.700  148.9    2.7   284   32.0 
2025-12-26 00:00 UT   08 25 27.1   +19 06 43     9.843   10.706  150.0    2.6   284   32.0 
2025-12-27 00:00 UT   08 25 00.8   +19 07 58     9.840   10.713  151.1    2.5   284   32.0 
2025-12-28 00:00 UT   08 24 34.2   +19 09 13     9.838   10.719  152.3    2.4   284   32.0 
2025-12-29 00:00 UT   08 24 07.3   +19 10 29     9.837   10.725  153.4    2.4   284   32.0 




    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.

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