117P/Helin-Roman-Alu (Record n° 16673)
Orbital period : 8.25 years
NASA/JPL elements
IAU/MPC elements
On 2016 Dec 04 21h01 UT by Jean-Francois Soulier
(Copyright Jean-Francois Soulier)Nuclear magnitude (m2) 17.8 m2 standard deviation 0.1 Aperture radius used for m2 8.1 " r (dist/Sun) 4.741 AU d (dist/Earth) 3.780 AU Right ascension 03 40 08.95 h m s Declination +19 53 51.8 ° ' " MPC report COD C10
CON JEAN-FRANCOIS SOULIER [jean-francois.soulier2@wanadoo.fr]
OBS J.-F. Soulier
MEA J.-F. Soulier
TEL 0.30-m f/3.8 Newtonian reflector + CCD
ACK MPCReport file updated 2016.12.04
AC2 jean-francois.soulier2@wanadoo.fr
NET UCAC-4
0117P C2016 12 04.87575 03 40 08.95 +19 53 51.8 17.8 N C10
0117P C2016 12 04.89905 03 40 08.08 +19 53 50.6 17.9 N C10
0117P C2016 12 04.92416 03 40 07.11 +19 53 49.0 17.7 N C10
Instrument type Newton Instrument aperture (0=naked eye) 300 mm Instrument focale length 1140 mm Instrument focale/diameter 3.8 Filter(s) None Camera ST8_XME Sensor CCD Sensor temperature -25 °C Binning 1x1 Mount F60a Axis instruments Autoguide Yes Exposure details 30 x 120s Observatory MPC code C10 Location Seine et Marne (77) Reference stars catalog UCAC-4
Used softwares ASTROMETRICA Resulting picture sampling (scale) 1.62 "/pix Observation submission date 2016 Dec 05 08h26m24s Observation modification date 2016 Dec 05 10h10m30s