C/2022 A1 (Sarneczky)
ephemeris	date	magn	radius	delta	ra	dec	elong	phase	PA
Nearest approach	8 Jan 2022	16.7	1.302 AU	0.322 AU	06h35m	+24°27'	169.9°	7.6°	101°
Perihelion	31 Jan 2022	18.5	1.256 AU	0.799 AU	03h07m	-14°29'	88.9°	51.6°	72°
Today	4 Jul 2025	33.8	11.596 AU	10.637 AU	19h59m	-37°23'	159.5°	1.8°	310°

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)                : 0.9966250
            q (Perihelion distance)         : 1.2561590
            i (Inclination)                 : 116.57310
            Ω (Longitude of ascending node) : 285.49280
            ω (Argument of perihelion)      : 201.28380
            L (Longitude of perihelion)     : 275.60744
            B (Latitude of perihelion)      : -18.94397
            T (Time of perihelion passage)  : 2459610.64140
            P (Orbital period in years)     : 7180.53

            Epoch                           : 2025 Jul 03
            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
2025-07-04 00:00 UT   19 59 19.3   -37 23 17    10.637   11.595  159.5    1.8   310   33.8 
2025-07-04 00:05 UT   19 59 19.2   -37 23 18    10.637   11.596  159.5    1.8   310   33.8 
2025-07-05 00:00 UT   19 58 50.6   -37 24 05    10.641   11.602  160.1    1.7   313   33.8 
2025-07-06 00:00 UT   19 58 21.8   -37 24 50    10.644   11.609  160.7    1.7   315   33.8 
2025-07-07 00:00 UT   19 57 52.8   -37 25 34    10.648   11.616  161.2    1.6   318   33.8 
2025-07-08 00:00 UT   19 57 23.8   -37 26 15    10.652   11.622  161.7    1.6   321   33.8 
2025-07-09 00:00 UT   19 56 54.8   -37 26 55    10.657   11.629  162.2    1.5   324   33.8 
2025-07-10 00:00 UT   19 56 25.6   -37 27 34    10.661   11.636  162.5    1.5   328   33.8 
2025-07-11 00:00 UT   19 55 56.4   -37 28 10    10.666   11.642  162.9    1.5   331   33.8 
2025-07-12 00:00 UT   19 55 27.2   -37 28 44    10.672   11.649  163.2    1.4   335   33.8 
2025-07-13 00:00 UT   19 54 57.9   -37 29 17    10.678   11.656  163.4    1.4   338   33.8 
2025-07-14 00:00 UT   19 54 28.6   -37 29 47    10.683   11.662  163.5    1.4   342   33.8 

    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.