261P/Larson (Record n° 7498)
Orbital period : 6.52 years
NASA/JPL elements
IAU/MPC elements
On 2012 Sep 19 20h58 UT by Jean-Francois Soulier
(Copyright Jean-Francois Soulier)Nuclear magnitude (m2) 16.8 m2 standard deviation 0.1 Aperture radius used for m2 8 " r (dist/Sun) 2.188 AU d (dist/Earth) 1.193 AU Right ascension 23 11 44.90 h m s Declination +05 13 19.7 ° ' " 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 Newtonian reflector + CCD
ACK MPCReport file updated 2012.09.19
AC2 jean-francois.soulier2@wanadoo.fr
NET UCAC-3
0261P C2012 09 19.87372 23 11 44.90 +05 13 19.7 16.9 N C10
0261P C2012 09 19.88473 23 11 44.44 +05 13 18.5 16.9 N C10
0261P C2012 09 19.89574 23 11 43.99 +05 13 17.1 16.6 N C10
Instrument type Newton Instrument aperture (0=naked eye) 300 mm Instrument focale length 900 mm Instrument focale/diameter 3 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 F60 Autoguide Yes Exposure total time 1800 s Exposure details 15 X 120s Seeing 3 Moon elongation 122 ° Air mass 1.58 Observatory MPC code C10 Location 77 Reference stars catalog UCAC-3
Used softwares ASTROMETRICA Resulting picture sampling (scale) 2 "/pix Image processing PRISMV8 LOG FC GIMP Observation submission date 2012 Sep 21 10h44m34s Observation modification date 2012 Sep 21 10h51m32s