C/2022 N1 (Attard-Maury)
ephemeris	date	magn	radius	delta	ra	dec	elong	phase	PA
Nearest approach	23 Jul 2022	17.8	1.621 AU	0.613 AU	19h20m	-17°50'	168.4°	7.2°	103°
Perihelion	9 Sep 2022	19.6	1.479 AU	1.710 AU	15h02m	-08°15'	59.4°	35.9°	101°
Today	30 Dec 2025	32.1	10.737 AU	9.834 AU	08h23m	+19°12'	155.5°	2.2°	284°

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
2025-12-29 00:00 UT   08 24 07.3   +19 10 29     9.837   10.725  153.4    2.4   284   32.0 
2025-12-30 00:00 UT   08 23 40.3   +19 11 45     9.835   10.732  154.5    2.3   284   32.1 
2025-12-30 21:25 UT   08 23 16.0   +19 12 53     9.834   10.737  155.5    2.2   284   32.1 
2025-12-31 00:00 UT   08 23 13.0   +19 13 01     9.834   10.738  155.7    2.2   284   32.1 
2026-01-01 00:00 UT   08 22 45.6   +19 14 18     9.833   10.744  156.8    2.1   284   32.1 
2026-01-02 00:00 UT   08 22 18.0   +19 15 36     9.833   10.750  157.9    2.0   284   32.1 
2026-01-03 00:00 UT   08 21 50.2   +19 16 53     9.832   10.757  159.0    1.9   284   32.1 
2026-01-04 00:00 UT   08 21 22.2   +19 18 11     9.832   10.763  160.2    1.8   284   32.1 
2026-01-05 00:00 UT   08 20 54.1   +19 19 29     9.833   10.769  161.3    1.7   284   32.1 
2026-01-06 00:00 UT   08 20 25.9   +19 20 47     9.834   10.776  162.4    1.6   284   32.1 
2026-01-07 00:00 UT   08 19 57.5   +19 22 06     9.835   10.782  163.6    1.5   284   32.1 
2026-01-08 00:00 UT   08 19 29.0   +19 23 25     9.836   10.788  164.7    1.4   284   32.1 
2026-01-09 00:00 UT   08 19 00.3   +19 24 43     9.838   10.794  165.8    1.3   284   32.1 

    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.