117P/Helin-Roman-Alu (Record n° 6467)
Orbital period : 8.25 years
NASA/JPL elements
IAU/MPC elements
On 2012 Apr 22 21h18 UT by Jean-Francois SoulierNuclear magnitude (m2) 17.8 m2 standard deviation 0.1 Aperture radius used for m2 7.5 " r (dist/Sun) 4.243 AU d (dist/Earth) 3.579 AU Right ascension 10 54 30.44 h m s Declination +17 24 51.4 ° ' " MPC report COD C10
CON JEAN-FRANCOIS SOULIER [jean-francois.soulier2@wanadoo.fr]
OBS J.F. Soulier
MEA J.F. Soulier
TEL 0.300-m f/4 Newtonian reflector + CCD
ACK MPCReport file updated 2012.04.22
AC2 jean-francois.soulier2@wanadoo.fr
NET USNO-B1.0
0117P C2012 04 22.88719 10 54 30.44 +17 24 51.4 17.7 N C10
0117P C2012 04 22.93167 10 54 29.77 +17 24 48.4 17.8 N C10
Instrument type Newton Instrument aperture (0=naked eye) 300 mm Instrument focale length 1200 mm Instrument focale/diameter 4 Camera ST7-XMEd Sensor CCD Sensor size 6.9 x 4.6 mm2 Sensor pixels number 765 x 510 Sensor temperature -20 °C Binning 1x1 Mount F60a Autoguide Yes Seeing 4 Moon elongation 108 ° Air mass 1.17 Observatory MPC code C10 Location 77 Reference stars catalog USNO-B1.0
Used softwares ASTROMETRICA Observation submission date 2012 Apr 23 14h44m57s