17P/Holmes (Record n° 24673)
Orbital period : 6.93 years
NASA/JPL elements
IAU/MPC elements
On 2021 Dec 25 18h41 UT by Jean-Francois SoulierNuclear magnitude (m2) 18.8 m2 standard deviation 0.2 Aperture radius used for m2 6 " r (dist/Sun) 3.009 AU d (dist/Earth) 2.105 AU Right ascension 05 02 17.05 h m s Declination +47 33 35.5 ° ' " 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 2021.12.25 20:47:40
AC2 jean-francois.soulier2@wanadoo.fr
NET UCAC-4
0017P KC2021 12 25.77846 05 02 17.05 +47 33 35.5 18.5 R L27
0017P KC2021 12 25.78217 05 02 16.78 +47 33 34.0 18.9 R L27
0017P KC2021 12 25.78587 05 02 16.47 +47 33 32.3 18.9 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 -15 °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 Dec 25 20h49m33s Observation modification date 2021 Dec 26 18h21m01s