C/2014 S2 (PANSTARRS)
ephemeris	date	magn	radius	delta	ra	dec	elong	phase	PA
Perihelion	9 Dec 2015	9.1	2.073 AU	1.887 AU	16h52m	+63°32'	86.4°	28.3°	357°
Nearest approach	26 Feb 2016	9.4	2.270 AU	1.808 AU	15h18m	+70°56'	104.6°	25.0°	254°
Today	5 Nov 2025	25.3	23.621 AU	24.307 AU	12h51m	-55°45'	45.3°	1.7°	219°

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 4.6 + 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/2014 S2 (PANSTARRS) are:

    e (Eccentricity)                : 0.9877510
    q (Perihelion distance)         : 2.0730450
    i (Inclination)                 : 64.57130
    Ω (Longitude of ascending node) : 8.21520
    ω (Argument of perihelion)      : 87.19600
    L (Longitude of perihelion)     : 91.70788
    B (Latitude of perihelion)      : 64.42740
    T (Time of perihelion passage)  : 2457366.47310
    P (Orbital period in years)     : 2201.72

    Epoch                           : 2022 Mar 31
    Reference                       : MPC104790

    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
2025-11-04 00:00 UT   12 50 52.3   -55 44 08    24.303   23.616   45.2    1.7   217   25.3 
2025-11-05 00:00 UT   12 51 06.4   -55 45 48    24.307   23.620   45.3    1.7   218   25.3 
2025-11-05 02:24 UT   12 51 07.8   -55 45 58    24.307   23.621   45.3    1.7   219   25.3 
2025-11-06 00:00 UT   12 51 20.4   -55 47 29    24.310   23.625   45.3    1.7   220   25.3 
2025-11-07 00:00 UT   12 51 34.3   -55 49 12    24.314   23.629   45.4    1.7   221   25.3 
2025-11-08 00:00 UT   12 51 48.1   -55 50 56    24.317   23.634   45.5    1.7   222   25.3 
2025-11-09 00:00 UT   12 52 01.7   -55 52 41    24.320   23.638   45.6    1.7   224   25.3 
2025-11-10 00:00 UT   12 52 15.2   -55 54 27    24.323   23.643   45.8    1.7   225   25.3 
2025-11-11 00:00 UT   12 52 28.6   -55 56 15    24.325   23.648   45.9    1.7   226   25.3 
2025-11-12 00:00 UT   12 52 41.8   -55 58 04    24.327   23.652   46.1    1.7   228   25.3 
2025-11-13 00:00 UT   12 52 54.9   -55 59 53    24.330   23.657   46.3    1.7   229   25.3 
2025-11-14 00:00 UT   12 53 07.8   -56 01 44    24.332   23.661   46.5    1.7   230   25.3 
2025-11-15 00:00 UT   12 53 20.6   -56 03 36    24.333   23.666   46.7    1.7   231   25.3 

    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.