C/2017 O1 (ASASSN) (Record n° 18738)
Perihelion distance : 1.49 AU
Inclination to ecliptic : 40 °
Orbital period : 6932 years
Eccentricity : 1
NASA/JPL elements
IAU/MPC elements
On 2017 Dec 18 20h28 UT by Nicolas Biver
(Copyright Nicolas Biver)Coma Total magnitude (m1) 14.2 Aperture radius for m1 1 ' Magnitude (MPC m2) 16.1 Aperture radius for m2 6 " Coma diameter 2 ' r (dist/Sun) 1.742 AU d (dist/Earth) 1.101 AU Right ascension 71.6875 ° Declination +86.96556 ° 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 Filter 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 73 s Exposure details 20X2s+2X4s+10X2.5s Sky transparency (naked eye max mag) 5 Seeing 3 Location crespières, yvelines Reference stars catalog (ast) NOMAD Resulting picture sampling (scale) 2 "/pix Image processing somme de poses de 2.5 à 4s + RETRAIT GRADIENT Observation submission date 2018 Jan 07 18h39m51s