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17P/Holmes

Orbital period : 6.93 years

NASA/JPL elements
IAU/MPC elements


On 2020 Nov 17 00h45 UT by Jean-Louis Virlichie


(Copyright Jean-Louis Virlichie)

Nuclear magnitude (m2)17.1
m2 standard deviation0.2
Aperture radius used for m25.6 "
r (dist/Sun) 2.205 AU
d (dist/Earth) 2.552 AU
Right ascension19 43 19.54 h m s
Declination-24 31 41.1 ° ' "
MPC report
COD X03
CON Jean-Louis Virlichie [jl.virlichie@gmail.com]
OBS J. L. Virlichie, P. Traverse
MEA J. L. Virlichie
TEL 0.35-m f/4.7 Newtonian reflector + CCD
ACK MPCReport file updated 2020.11.17 19:02:45
AC2 jl.virlichie@gmail.com
NET Gaia DR2
0017P         C2020 11 17.03102 19 43 19.54 -24 31 41.1          17.1 G      X03
0017P         C2020 11 17.04291 19 43 20.88 -24 31 32.9          17.0 G      X03
0017P         C2020 11 17.05477 19 43 22.26 -24 31 25.2          16.8 G      X03
0017P         C2020 11 17.06663 19 43 23.51 -24 31 16.6          17.4 G      X03
Instrumental configurationConfig1
InstrumentONTC 355
Instrument typeNewton
Instrument aperture (0=naked eye)350 mm
Instrument focale length1645 mm
Instrument focale/diameter4.7
Filter(s)L
CameraMoravian G3 KAF 16200
SensorCCD
Sensor size27x21.6 mm2
Sensor pixels number4500x3600
Sensor temperature-20 °C
Binning2x2
MountSW EQ8
MotorizationNo
AutoguideYes
Exposure details8x90s
Observatory MPC codeX03
LocationPoroto Chili
Reference stars catalogGaia DR2
Used softwaresASTROMETRICA
Resulting picture sampling (scale)1.4 "/pix
Observation submission date2020 Nov 17 21h56m18s
Observation modification date2020 Nov 17 22h00m11s

(Record n° 22646)

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