171P/Spahr (Record n° 5428)
Orbital period : 6.70 years
NASA/JPL elements
IAU/MPC elements
On 2011 Dec 26 19h05 UT by Jean-Francois Soulier
(Copyright Jean-Francois Soulier)Nuclear magnitude (m2) 20 m2 standard deviation 0.2 Aperture radius used for m2 8 " r (dist/Sun) 2.093 AU d (dist/Earth) 1.872 AU Right ascension 00 47 06.85 h m s Declination -20 09 20.4 ° ' " MPC report COD C10
CON JEAN-FRANCOIS SOULIER [jean-francois.soulier2@wanadoo.fr]
OBS J.F. Soulier
MEA J.F. Soulier
TEL 0.255-m f/3.6 Newtonian reflector + CCD
ACK MPCReport file updated 2011.12.26
AC2 jean-francois.soulier2@wanadoo.fr
NET USNO-B1.0
0171P KC2011 12 26.79500 00 47 06.85 -20 09 20.4 20.2 N C10
0171P KC2011 12 26.80500 00 47 07.40 -20 09 09.6 19.9 N C10
Instrument type Newton Instrument aperture (0=naked eye) 254 mm Instrument focale length 900 mm Instrument focale/diameter 3.6 Camera ST7-XMEd Sensor CCD Sensor size 6.9 x 4.6 mm2 Sensor pixels number 765 x 510 Sensor temperature -25 °C Binning 1x1 Mount PERL-VIXEN Autoguide Yes Exposure total time 2520 s Exposure details 21 x 120s Seeing 3 Moon elongation 66 ° Air mass 2.77 Observatory MPC code C10 Location 77 Reference stars catalog USNO-B1.0
Used softwares ASTROMETRICA Resulting picture sampling (scale) 2.04 "/pix Image processing PRISMV8 DDP FC GIMP Observation submission date 2011 Dec 27 15h49m13s Observation modification date 2011 Dec 28 21h23m18s