21P/Giacobini-Zinner (Record n° 564)
Orbital period : 6.54 years
NASA/JPL elements
IAU/MPC elements
On 1985 Aug 21 00h25 UT by Jean-Yves Corsand
(Copyright Jean-Yves Corsand)Coma Total magnitude (m1) 8.4 Coma diameter 2.1 ' Coma condensation degree
(DC) 5 Tail length 0 ° r (dist/Sun) 1.051 AU d (dist/Earth) 0.500 AU Right ascension 03 59 01.00 h m s Declination +50 25 39.0 ° ' " Instrument TE 114 Instrument type Newton Instrument aperture (0=naked eye) 114 mm Instrument focale length 900 mm Instrument focale/diameter 7.89 Sensor Eye Power magnification 45 X Magnitude visual estimation method
(ICQ code) I Sky transparency (naked eye max mag) 5 Location Arles 13200 France Resulting picture sampling (scale) 6.2 "/pix Observation submission date 2010 Jun 18 10h12m09s Observation modification date 2011 Jun 29 11h38m23s