161P/Hartley-IRAS (Record n° 31983)
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 15 18h32 UT by Francois Kugel
(Copyright Francois Kugel)Magnitude (MPC m2) 15.4 Aperture radius for m2 6.3 " Magnitude band Vj r (dist/Sun) 1.399 AU d (dist/Earth) 0.613 AU Right ascension 316.50573 ° Declination +6.67656 ° ADES report
# version=2022
# observatory
! mpcCode A77
# submitter
! name F. Kugel
# observers
! name F.Kugel
# measurers
! name F. Kugel
# telescope
! design reflector
! aperture 0.40
! fRatio 2.8
! detector CMO
# software
! astrometry Tycho 13.7
! photometry Tycho 13.7
permID |provID |trkSub |mode|stn |obsTime |ra |dec |rmsRA|rmsDec|rmsFit|astCat |mag |rmsMag|band|photCat |photAp|logSNR|exp |notes|remarks
161P| | FD26094| CMO|A77 |2026-10-15T18:31:46.3Z |316.50573 |+6.67656 |0.37 |0.37 |0.52 | ATLAS2|15.4 |0.04 | Vj| ATLAS2| 6.3 |1.63 | 270| K|
161P| | FD26094| CMO|A77 |2026-10-15T18:37:15.1Z |316.49918 |+6.67906 |0.35 |0.35 |0.49 | ATLAS2|15.4 |0.03 | Vj| ATLAS2| 6.3 |1.63 | 255| K|
161P| | FD26094| CMO|A77 |2026-10-15T18:42:32.6Z |316.49290 |+6.68147 |0.36 |0.35 |0.50 | ATLAS2|15.4 |0.04 | Vj| ATLAS2| 6.3 |1.62 | 255| K|
Instrumental configuration Config2 Instrument type Newton Instrument aperture (0=naked eye) 400 mm Instrument focale length 1120 mm Instrument focale/diameter 2.8 Filter None Camera IMX492 Sensor CMOS Binning 2x2 Picture exposure details 52x15s Observatory MPC code A77 Reference stars catalog (ast) ATLAS2 Reference stars catalog (phot) ATLAS2 Resulting picture sampling (scale) 0.85 "/pix Observation submission date 2026 Oct 15 19h50m11s Observation modification date 2026 Oct 15 19h51m16s