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17P/Holmes

Orbital period : 6.93 years

NASA/JPL elements
IAU/MPC elements


On 2021 Sep 30 03h17 UT by Jean-Gabriel Bosch


(Copyright Jean-Gabriel Bosch)

Nuclear magnitude (m2)17.8
m2 standard deviation0.1
Aperture radius used for m25.8 "
r (dist/Sun) 2.646 AU
d (dist/Earth) 2.315 AU
Right ascension05 50 33.85 h m s
Declination+45 06 50.8 ° ' "
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 2021.09.30 14:22:12
AC2 JGBosch@free.fr
NET UCAC-4
0017P         C2021 09 30.13671 05 50 33.85 +45 06 50.8          17.8 R      A77
0017P         C2021 09 30.14401 05 50 34.23 +45 06 52.6          17.9 R      A77
0017P         C2021 09 30.14978 05 50 34.26 +45 06 55.9          17.6 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 details15x60s
Observatory MPC codeA77
LocationObs. Dauban A77
Reference stars catalogUCAC-4
Used softwaresASTROMETRICA
Resulting picture sampling (scale)0.83 "/pix
Observation submission date2021 Sep 30 14h25m35s
Observation modification date2021 Sep 30 15h42m58s

(Record n° 24051)

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