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17P/Holmes

Orbital period : 6.93 years

NASA/JPL elements
IAU/MPC elements


On 2021 Jul 31 02h10 UT by Jean-Gabriel Bosch


(Copyright Jean-Gabriel Bosch)

Nuclear magnitude (m2)17.8
m2 standard deviation0.4
Aperture radius used for m25.8 "
r (dist/Sun) 2.410 AU
d (dist/Earth) 2.764 AU
Right ascension04 20 47.31 h m s
Declination+38 03 44.5 ° ' "
MPC report
COD A77
CON J.-G. Bosch [JGBosch@free.fr]
OBS J.-G.Bosch
MEA J.-G. Bosch
TEL 0.4-m f/2.8 reflector + CCD
ACK MPCReport file updated 2021.07.31 14:51:11
AC2 JGBosch@free.fr
NET UCAC-4
0017P         C2021 07 31.09017 04 20 47.31 +38 03 44.5          17.3 R      A77
0017P         C2021 07 31.09423 04 20 47.82 +38 03 47.7          17.9 R      A77
0017P         C2021 07 31.09828 04 20 48.23 +38 03 49.1          18.2 R      A77
InstrumentNEWTON 400
Instrument typeNewton
Instrument aperture (0=naked eye)400 mm
Instrument focale length1120 mm
Instrument focale/diameter2.8
Filter(s)None
CameraAtik 460ex
SensorCCD
Binning1x1
MountMeade-MCMT-TDM
Exposure details12x1mn
Observatory MPC codeA77
LocationObs. Dauban A77
Reference stars catalogUCAC-4
Used softwaresASTROMETRICA
Resulting picture sampling (scale)0.83 "/pix
Observation submission date2021 Jul 31 14h56m01s
Observation modification date2021 Jul 31 15h25m07s

(Record n° 23694)

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