21P/Giacobini-Zinner (Record n° 19765)
Orbital period : 6.54 years
NASA/JPL elements
IAU/MPC elements
On 2018 Sep 21 09h17 UT by Thierry Noel
(Copyright Thierry Noel)Coma Total magnitude (m1) 9.9 Aperture radius used for m1 0.56 ' Nuclear magnitude (m2) 11.8 m2 standard deviation 0.0 Aperture radius used for m2 6.7 " r (dist/Sun) 1.024 AU d (dist/Earth) 0.410 AU Right ascension 06 28 21.00 h m s Declination +14 16 24.7 ° ' " MPC report COD W96
CON Thierry Noel [thierrynoel38a@free.fr]
OBS A. Maury, J.-B. de Vanssay, T. Noel
MEA T. Noel
TEL 0.4-m f/5.4 Ritchey-Chretien + CCD
COM Aperture radius for m1 m2 : 0.54' 6.4"
ACK MPCReport file updated 2018.09.21 15:18:21
AC2 thierrynoel38a@free.fr
NET UCAC-4
0021P C2018 09 21.38655 06 28 21.00 +14 16 24.7 11.8 N W96
0021P C2018 09 21.39105 06 28 21.74 +14 15 57.7 9.9 T W96
0021P C2018 09 21.39601 06 28 22.58 +14 15 28.8 11.8 N W96
Instrument Marcon RC 400 Instrument type Ritchey-Chretien Instrument aperture (0=naked eye) 400 mm Instrument focale length 2160 mm Instrument focale/diameter 5.4 Camera APOGEE ALTA Sensor CCD Sensor temperature -25 °C Binning 2x2 Mount VMA 200 Autoguide No Exposure details 24x20s Observatory MPC code W96 Location San Pedro de Atacama, Chile Reference stars catalog UCAC-4
Used softwares ASTROMETRICA Resulting picture sampling (scale) 1.12 "/pix Image processing Prism (-dark, /flat), Astrometrica (add), Iris (levels, ddp, crop) Observation submission date 2018 Sep 21 15h26m12s Observation modification date 2018 Oct 01 09h10m31s