17P/Holmes (Record n° 23748)
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 m1 0.4 ' Nuclear magnitude (m2) 16.8 m2 standard deviation 0.3 Aperture radius used for m2 5.8 " r (dist/Sun) 2.447 AU d (dist/Earth) 2.701 AU Right ascension 04 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 configuration Config2 Instrument type Newton Instrument aperture (0=naked eye) 400 mm Instrument focale length 1120 mm Instrument focale/diameter 2.8 Filter(s) None Camera Atik460ex Sensor CCD Sensor temperature -10 °C Binning 1x1 Mount Meade-MCMT-TDM Exposure details 9x90s Observatory MPC code A77 Reference stars catalog NOMAD
Resulting picture sampling (scale) 0.83 "/pix Observation submission date 2021 Aug 10 07h46m45s Observation modification date 2021 Aug 10 16h39m07s