17P/Holmes (Record n° 23694)
Orbital period : 6.93 years
NASA/JPL elements
IAU/MPC elements
On 2021 Jul 31 02h10 UT by Jean-Gabriel Bosch
(Copyright Jean-Gabriel Bosch)Nuclear magnitude (m2) 17.8 m2 standard deviation 0.4 Aperture radius used for m2 5.8 " r (dist/Sun) 2.410 AU d (dist/Earth) 2.764 AU Right ascension 04 20 47.31 h m s Declination +38 03 44.5 ° ' " MPC report COD A77
CON J.-G. Bosch [JGBosch@free.fr]
OBS J.-G.Bosch
MEA J.-G. Bosch
TEL 0.4-m f/2.8 reflector + CCD
ACK MPCReport file updated 2021.07.31 14:51:11
AC2 JGBosch@free.fr
NET UCAC-4
0017P C2021 07 31.09017 04 20 47.31 +38 03 44.5 17.3 R A77
0017P C2021 07 31.09423 04 20 47.82 +38 03 47.7 17.9 R A77
0017P C2021 07 31.09828 04 20 48.23 +38 03 49.1 18.2 R A77
Instrument NEWTON 400 Instrument type Newton Instrument aperture (0=naked eye) 400 mm Instrument focale length 1120 mm Instrument focale/diameter 2.8 Filter(s) None Camera Atik 460ex Sensor CCD Binning 1x1 Mount Meade-MCMT-TDM Exposure details 12x1mn Observatory MPC code A77 Location Obs. Dauban A77 Reference stars catalog UCAC-4
Used softwares ASTROMETRICA Resulting picture sampling (scale) 0.83 "/pix Observation submission date 2021 Jul 31 14h56m01s Observation modification date 2021 Jul 31 15h25m07s