C/2022 A1 (Sarneczky)
ephemeris	date	magn	radius	delta	ra	dec	elong	phase	PA
Nearest approach	8 Jan 2022	16.7	1.302 AU	0.323 AU	06h35m	+24°30'	169.8°	7.7°	101°
Perihelion	31 Jan 2022	18.5	1.257 AU	0.800 AU	03h07m	-14°27'	88.8°	51.6°	72°
Today	2 Oct 2025	34.3	12.196 AU	12.015 AU	19h27m	-36°27'	98.1°	4.7°	79°

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/2022 A1 (Sarneczky) are:

            e (Eccentricity)                : 0.9966710
            q (Perihelion distance)         : 1.2565450
            i (Inclination)                 : 116.57900
            Ω (Longitude of ascending node) : 285.49090
            ω (Argument of perihelion)      : 201.29290
            L (Longitude of perihelion)     : 275.59900
            B (Latitude of perihelion)      : -18.95097
            T (Time of perihelion passage)  : 2459610.69660
            P (Orbital period in years)     : 7333.25

            Epoch                           : 2025 Oct 01
            Reference                       : MPEC 2022-YN2

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

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 light curve is based on the absolute magnitude and slope parameter as calculated from an MPEC, or the latest values provided by the minor planet center. (18.00 + 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
2025-10-02 00:00 UT   19 27 10.6   -36 29 24    11.994   12.191   98.9    4.7    79   34.3 
2025-10-02 21:07 UT   19 27 05.9   -36 27 57    12.015   12.196   98.1    4.7    79   34.3 
2025-10-03 00:00 UT   19 27 05.3   -36 27 45    12.017   12.197   98.0    4.7    79   34.3 
2025-10-04 00:00 UT   19 27 00.5   -36 26 05    12.040   12.204   97.0    4.7    79   34.3 
2025-10-05 00:00 UT   19 26 56.1   -36 24 25    12.064   12.210   96.1    4.7    80   34.3 
2025-10-06 00:00 UT   19 26 52.1   -36 22 45    12.087   12.217   95.1    4.7    80   34.3 
2025-10-07 00:00 UT   19 26 48.5   -36 21 04    12.110   12.223   94.1    4.7    80   34.3 
2025-10-08 00:00 UT   19 26 45.4   -36 19 22    12.133   12.230   93.2    4.7    80   34.3 
2025-10-09 00:00 UT   19 26 42.7   -36 17 40    12.157   12.236   92.2    4.7    81   34.3 
2025-10-10 00:00 UT   19 26 40.4   -36 15 58    12.180   12.243   91.3    4.7    81   34.3 
2025-10-11 00:00 UT   19 26 38.5   -36 14 15    12.203   12.249   90.3    4.7    81   34.3 
2025-10-12 00:00 UT   19 26 37.0   -36 12 32    12.226   12.256   89.3    4.7    81   34.3 

    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.