161P/Hartley-IRAS (Record n° 31937)
Perihelion distance : 1.27 AU
Inclination to ecliptic : 96 °
Orbital period : 21.46 years
Eccentricity : 0.84
NASA/JPL elements
IAU/MPC elements
On 2026 Oct 05 20h44 UT by Jean-Francois Soulier
(Copyright Jean-Francois Soulier)Magnitude (MPC m2) 15 Magnitude standard deviation 0.1 Aperture radius for m2 6.75 " Magnitude band r r (dist/Sun) 1.462 AU d (dist/Earth) 0.510 AU Right ascension 338.16212 ° Declination -0.37175 ° MPC report COD L27
CON J.-F. Soulier
OBS J.-F. Soulier
MEA J.-F. Soulier
TEL 0.25-m f/3.5 reflector + CCD
NUM 5
ACK MPCReport file updated 2026.10.06 08:52:32
NET ATLAS2
AC2 jean-francois.soulier2@wanadoo.fr
0161P KC2026 10 05.86362 22 32 38.91 -01 37 41.7 15.0 r L27
0161P KC2026 10 05.86778 22 32 36.25 -01 37 26.8 14.9 r L27
0161P KC2026 10 05.87195 22 32 33.58 -01 37 11.9 15.0 r L27
0161P KC2026 10 05.87612 22 32 30.91 -01 36 57.2 14.9 r L27
0161P KC2026 10 05.88030 22 32 28.24 -01 36 42.2 15.0 r L27
Instrument type Newton Instrument aperture (0=naked eye) 250 mm Instrument focale length 875 mm Instrument focale/diameter 3.5 Filter None Camera ATIK 414 EX Sensor CCD Sensor temperature -10 °C Binning 1x1 Mount PARAMOUNT ME Autoguide No Picture exposure details 80 x 20s Observatory MPC code L27 Location Dauban Reference stars catalog (ast) ATLAS2 Reference stars catalog (phot) ATLAS2 Used softwares Tycho Resulting picture sampling (scale) 1.5 "/pix Observation submission date 2026 Oct 06 07h04m43s Observation modification date 2026 Oct 06 07h38m25s