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161P/Hartley-IRAS

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 18 19h30 UT by Jean-Gabriel Bosch


(Copyright Jean-Gabriel Bosch)

Magnitude (MPC m2)15
Aperture radius for m27.2 "
Magnitude bandG
r (dist/Sun) 1.382 AU
d (dist/Earth) 0.661 AU
Right ascension311.77725 °
Declination+8.50862 °
ADES report
# version=2022
# observatory
! mpcCode Y87
# submitter
! name J.-G. Bosch
# observers
! name J.-G. Bosch
# measurers
! name J.-G. Bosch
# telescope
! design reflector
! aperture 0.25
! fRatio 4.75
! detector CMO
# software
! astrometry Tycho 13.6
! photometry Tycho 13.6
permID |provID     |trkSub  |mode|stn |obsTime                |ra         |dec        |rmsRA|rmsDec|rmsFit|astCat  |mag  |rmsMag|band|photCat |photAp|logSNR|exp |notes|remarks
   161P|           | ABC1954| CMO|Y87 |2026-10-18T19:30:34Z   |311.77725  |+8.50862   |0.14 |0.14  |0.20  |   Gaia2|15.0 |0.05  |   G|   Gaia2| 7.2  |1.97  | 550|    K|
   161P|           | ABC1954| CMO|Y87 |2026-10-18T19:40:06Z   |311.76777  |+8.51227   |0.20 |0.16  |0.25  |   Gaia2|15.0 |0.05  |   G|   Gaia2| 7.2  |1.96  | 550|    K|
   161P|           | ABC1954| CMO|Y87 |2026-10-18T19:49:14Z   |311.75866  |+8.51584   |0.23 |0.29  |0.37  |   Gaia2|15.0 |0.11  |   G|   Gaia2| 7.2  |1.85  | 525|    K|
Instrument typeNewton
Instrument aperture (0=naked eye)250 mm
Instrument focale length1187.5 mm
Instrument focale/diameter4.75
CameraAsi 294MM
SensorCMOS
Sensor temperature-5 °C
Binning4x4
MountEQ6-R pro
Picture exposure details65x25s
Observatory MPC codeY87
LocationTrevinca skies-Amalthea
Reference stars catalog (ast)Gaia2
Reference stars catalog (phot)Gaia2
Used softwaresTycho Tracker
Image resize factor2
Resulting picture sampling (scale)1.6 "/pix
Observation submission date2026 Oct 19 05h41m45s
Observation modification date2026 Oct 19 05h52m16s

(Record n° 31993)

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