C/2017 S3 (PANSTARRS) (Record n° 19344)
NASA/JPL elements
IAU/MPC elements
On 2018 Jul 17 02h26 UT by Nicolas Biver
(Copyright Nicolas Biver)Coma Total magnitude (m1) 9.5 Aperture radius used for m1 2.0 ' Nuclear magnitude (m2) 12.5 Aperture radius used for m2 4.0 " Coma diameter 4 ' Coma condensation degree
(DC) 5 r (dist/Sun) 0.899 AU d (dist/Earth) 1.153 AU Right ascension 05 17 51.6 h m s Declination +56 35 53 ° ' " Instrumental configuration Config1 Instrument Dobson 407 F/D 4.3 Instrument type Newton Instrument aperture (0=naked eye) 407 mm Instrument focale length 1750 mm Instrument focale/diameter 4.29 Filter(s) None Camera sony alpha 7s Sensor DC Sensor size 36x24 mm2 Sensor pixels number 4240x2832 Binning 2x2 Mount dobson Motorization No Autoguide No Exposure total time 22.8 s Exposure details 91x1/4s Sky transparency (naked eye max mag) 4.5 Seeing 2 Moon phase 124 ° Moon elongation 90 ° Air mass 1.7 Location Versailles Reference stars catalog Tycho-2 Used softwares IRIS Resulting picture sampling (scale) 2.0 "/pix Image processing alignement, somme, retrait gradient Remarks or comments Nord en PA~45°
Entre les nuages, crépuscule (soleil -13°) Observation submission date 2018 Jul 17 12h05m33s