161P/Hartley-IRAS (Record n° 31939)
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 Sep 05 08h48 UT by Pierre Traverse
(Copyright Pierre Traverse)Magnitude (MPC m2) 16.7 Magnitude standard deviation 0.2 Aperture radius for m2 6 " Magnitude band V r (dist/Sun) 1.692 AU d (dist/Earth) 0.908 AU Right ascension 39.78154 ° Declination -16.18781 ° MPC report COD X03
CON P. Traverse [pierre.traverse@orange.fr]
OBS J. L. Virlichie, P. Traverse, H. Roy
MEA P. Traverse
TEL 0.35-m f/4.7 Newtonian reflector + CCD
ACK MPCReport file updated 2026.09.05 15:31:20
AC2 pierre.traverse@orange.fr
NET UCAC-4
0161P KC2026 09 05.36701 02 39 07.57 -17 48 43.9 16.5 V X03
0161P KC2026 09 05.38486 02 39 03.90 -17 48 38.6 16.5 V X03
0161P KC2026 09 05.40074 02 39 00.62 -17 48 33.1 17.0 V X03
Instrumental configuration Config1 Instrument ONTC 355mm Instrument type Newton Instrument aperture (0=naked eye) 350 mm Instrument focale length 1645 mm Instrument focale/diameter 4.7 Filter L Camera CMOS Player One IMX571 Sensor CCD Sensor pixels number 6252X4176 Sensor temperature -10 °C Binning 2x2 Mount SW EQ8 Motorization No Autoguide Yes Picture exposure details 31x120s Observatory MPC code X03 Location Monte Patria Chili Reference stars catalog (ast) UCAC-4 Reference stars catalog (phot) UCAC-4 Used softwares ASTROMETRICA Resulting picture sampling (scale) 0.86 "/pix Observation submission date 2026 Oct 06 09h48m14s Observation modification date 2026 Oct 06 09h52m30s