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C/2017 S3 (PANSTARRS)

Date of perihelion passage : 2018-8-15.9447
Perihelion distance : 0.208454 AU
Inclination to ecliptic : 99.0383 °
Eccentricity : 1.000088

NASA/JPL elements, ephemeris and orbit diagram
IAU/MPC elements and ephemeris


On 2018 Jul 19 02h01 UT by Nicolas Biver


(Copyright Nicolas Biver)

Coma Total magnitude (m1)7.5
Aperture radius used for m13.5 '
Nuclear magnitude (m2)11.2
Aperture radius used for m26.0 "
Coma diameter6.7 '
Coma condensation degree (DC)6
Tail length0.38 °
Tail position angle (PA)300 °
r (dist/Sun) 0.853 AU
d (dist/Earth) 1.101 AU
Right ascension04 58 55.4 h m s
Declination+55 30 29 ° ' "
Instrumental configurationConfig1
InstrumentDobson T407mm F/D=4.3
Instrument typeNewton
Instrument aperture (0=naked eye)407 mm
Instrument focale length1750 mm
Instrument focale/diameter4.29
Filter(s)None
CameraSony alpha 7s
SensorDC
Sensor size36x24 mm2
Sensor pixels number4240x2832
Binning2x2
MountDosbson sur table equatoriale JMI
TrackingYes
AutoguideNo
Exposure total time113.5 s
Exposure details21*2.5+5+14*4sec
Sky transparency (naked eye max mag)6
Seeing4
Moon phase100 °
Moon elongation110 °
Air mass1.6
LocationBoulonville (28)
Reference stars catalogTycho-2
Photometry|Astrometry softwareIRIS
Resulting picture sampling (scale)2.0 "/pix
Image processingalignement, somme, retrait gradient (2 séries combinées)
Observation submission date2018 Jul 19 19h32m09s
Observation modification date2018 Jul 23 11h30m06s

(Record n° 19356)

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