17P/Holmes (Record n° 23576)
Orbital period : 6.93 years
NASA/JPL elements
IAU/MPC elements
On 2021 Jul 09 02h04 UT by Jean-Francois Soulier
(Copyright Jean-Francois Soulier)Nuclear magnitude (m2) 16.7 m2 standard deviation 0.1 Aperture radius used for m2 6 " r (dist/Sun) 2.335 AU d (dist/Earth) 2.883 AU Right ascension 03 37 08.50 h m s Declination +34 35 29.3 ° ' " MPC report COD L27
CON J.-F. Soulier [jean-francois.soulier2@wanadoo.fr]
OBS J.-F. Soulier
MEA J.-F. Soulier
TEL 0.25-m f/3.5 Newtonian reflector + CCD
ACK L27 2021.07.09 04:34:39
AC2 jean-francois.soulier2@wanadoo.fr
NET UCAC-4
0017P KC2021 07 09.08644 03 37 08.50 +34 35 29.3 16.7 R L27
0017P KC2021 07 09.09200 03 37 09.18 +34 35 32.8 16.6 R L27
0017P KC2021 07 09.09755 03 37 09.85 +34 35 36.0 16.7 R L27
Instrument type Newton Instrument aperture (0=naked eye) 250 mm Instrument focale length 875 mm Instrument focale/diameter 3.5 Filter(s) None Camera ATIK 414-EX- Sensor CCD Sensor temperature -10 °C Binning 1x1 Mount PARAMOUNT-ME- Autoguide No Exposure details 30 x 60s Observatory MPC code L27 Location Dauban (04) Reference stars catalog UCAC-4
Used softwares ASTROMETRICA Resulting picture sampling (scale) 1.49 "/pix Observation submission date 2021 Jul 09 04h36m28s Observation modification date 2021 Jul 09 04h43m56s