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17P/Holmes

Orbital period : 6.93 years

NASA/JPL elements
IAU/MPC elements


On 2021 Aug 10 02h42 UT by Francois Kugel


(Copyright Francois Kugel)

Coma Total magnitude (m1)14.5
Aperture radius used for m10.4 '
Nuclear magnitude (m2)16.8
m2 standard deviation0.3
Aperture radius used for m25.8 "
r (dist/Sun) 2.447 AU
d (dist/Earth) 2.701 AU
Right ascension04 39 29.49 h m s
Declination+39 25 30.9 ° ' "
MPC report
COD A77
CON FRANCOIS KUGEL [fkugel@free.fr]
OBS F. Kugel
MEA F. Kugel
TEL 0.4-m f/2.8 reflector + CCD
ACK A77 file updated 2021.08.10 07:39:58
AC2 fkugel@free.fr
NET NOMAD
0017P         C2021 08 10.11220 04 39 29.49 +39 25 30.9          16.5 V      A77
0017P         C2021 08 10.12282 04 39 30.67 +39 25 36.1          17.1 V      A77
0017P         C2021 08 10.13374 04 39 31.87 +39 25 41.1          16.9 V      A77
Instrumental configurationConfig2
Instrument typeNewton
Instrument aperture (0=naked eye)400 mm
Instrument focale length1120 mm
Instrument focale/diameter2.8
Filter(s)None
CameraAtik460ex
SensorCCD
Sensor temperature-10 °C
Binning1x1
MountMeade-MCMT-TDM
Exposure details9x90s
Observatory MPC codeA77
Reference stars catalogNOMAD
Resulting picture sampling (scale)0.83 "/pix
Observation submission date2021 Aug 10 07h46m45s
Observation modification date2021 Aug 10 16h39m07s

(Record n° 23748)

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