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17P/Holmes

Orbital period : 6.93 years

NASA/JPL elements
IAU/MPC elements


On 2021 Nov 08 22h20 UT by Jean-Gabriel Bosch


(Copyright Jean-Gabriel Bosch)

Nuclear magnitude (m2)18
m2 standard deviation0.3
Aperture radius used for m25.8 "
r (dist/Sun) 2.809 AU
d (dist/Earth) 2.058 AU
Right ascension05 54 32.69 h m s
Declination+48 43 12.1 ° ' "
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 2021.11.09 13:08:30
AC2 JGBosch@free.fr
NET UCAC-4
0017P         C2021 11 08.93021 05 54 32.69 +48 43 12.1          18.1 R      A77
0017P         C2021 11 08.93604 05 54 32.42 +48 43 12.3          17.7 R      A77
0017P         C2021 11 08.94185 05 54 32.25 +48 43 14.3          18.3 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
Sensor temperature-10 °C
Binning1x1
MountMeade-MCMT-TDM
Exposure details15x60s
Observatory MPC codeA77
LocationDauban A77
Reference stars catalogUCAC-4
Used softwaresASTROMETRICA
Resulting picture sampling (scale)0.83 "/pix
Observation submission date2021 Nov 09 13h47m27s
Observation modification date2021 Nov 09 13h53m03s

(Record n° 24339)

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