C/2022 A1 (Sarneczky)
ephemeris	date	magn	radius	delta	ra	dec	elong	phase	PA
Nearest approach	8 Jan 2022	16.7	1.303 AU	0.324 AU	06h35m	+24°42'	169.7°	7.8°	102°
Perihelion	31 Jan 2022	18.5	1.257 AU	0.802 AU	03h07m	-14°20'	88.8°	51.6°	72°
Today	20 Apr 2026	34.9	13.518 AU	13.412 AU	20h04m	-33°23'	93.9°	4.3°	259°

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. 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. (18.0 + 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 A1 (Sarneczky) are:

    e (Eccentricity)                : 0.9992650
    q (Perihelion distance)         : 1.2572550
    i (Inclination)                 : 116.59820
    Ω (Longitude of ascending node) : 285.48940
    ω (Argument of perihelion)      : 201.27370
    L (Longitude of perihelion)     : 275.60061
    B (Latitude of perihelion)      : -18.93076
    T (Time of perihelion passage)  : 2459610.80500
    P (Orbital period in years)     : 70746.35

    Epoch                           : 2026 Mar 16
    Reference                       : MPEC 2026-E44

    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
2026-04-19 00:00 UT   20 04 43.6   -33 22 06    13.430   13.507   92.2    4.3   258   34.9 
2026-04-20 00:00 UT   20 04 41.7   -33 22 43    13.420   13.513   93.2    4.3   259   34.9 
2026-04-20 17:48 UT   20 04 40.1   -33 23 10    13.412   13.518   93.9    4.3   259   34.9 
2026-04-21 00:00 UT   20 04 39.5   -33 23 20    13.409   13.519   94.1    4.3   259   34.9 
2026-04-22 00:00 UT   20 04 36.9   -33 23 58    13.399   13.526   95.1    4.2   259   34.9 
2026-04-23 00:00 UT   20 04 34.0   -33 24 37    13.388   13.532   96.1    4.2   259   34.9 
2026-04-24 00:00 UT   20 04 30.7   -33 25 17    13.378   13.538   97.0    4.2   259   34.9 
2026-04-25 00:00 UT   20 04 27.1   -33 25 58    13.368   13.545   98.0    4.2   260   34.9 
2026-04-26 00:00 UT   20 04 23.1   -33 26 40    13.357   13.551   99.0    4.2   260   34.9 
2026-04-27 00:00 UT   20 04 18.7   -33 27 23    13.347   13.557   99.9    4.2   260   34.9 
2026-04-28 00:00 UT   20 04 14.0   -33 28 06    13.337   13.563  100.9    4.2   260   34.9 
2026-04-29 00:00 UT   20 04 09.0   -33 28 50    13.326   13.570  101.9    4.2   261   34.9 
2026-04-30 00:00 UT   20 04 03.5   -33 29 35    13.316   13.576  102.8    4.1   261   34.9 

    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.