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21P/Giacobini-Zinner

Orbital period : 6.57 years

NASA/JPL elements
IAU/MPC elements


On 2018 Aug 17 01h58 UT by Joel Nicolas


(Copyright Joel Nicolas)

Coma Total magnitude (m1)8.5
Nuclear magnitude (m2)11.6
m2 standard deviation0.0
Aperture radius used for m25.6 "
Coma diameter3.2 '
Afrho840 cm
Afrho error59 cm
r (dist/Sun) 1.071 AU
d (dist/Earth) 0.480 AU
Right ascension02 51 38.64 h m s
Declination+63 58 50.6 ° ' "
MPC report
COD A77
CON J. NICOLAS [nicolas.joel@wanadoo.fr]
OBS J. Nicolas
MEA J. Nicolas
TEL 0.41-m f/3.3 reflector + CCD
ACK MPCReport file updated 2018.08.17 14:50:07
AC2 nicolas.joel@wanadoo.fr
NET UCAC-4
0021P         C2018 08 17.08227 02 51 38.64 +63 58 50.6          11.6 N      A77
0021P         C2018 08 17.08442 02 51 40.07 +63 58 46.1          11.6 N      A77
0021P         C2018 08 17.08697 02 51 41.79 +63 58 41.1          11.6 N      A77
0021P         C2018 08 17.09001 02 51 43.76 +63 58 34.8          11.5 N      A77
0021P         C2018 08 17.09428 02 51 46.48 +63 58 26.2          11.6 N      A77
0021P         C2018 08 17.09684 02 51 48.07 +63 58 21.1          11.6 N      A77
Instrumental configurationConfig1
Instrument typeNewton
Instrument aperture (0=naked eye)410 mm
Instrument focale length1353 mm
Instrument focale/diameter3.3
Filter(s)R Bessel
CameraST8XME
SensorCCD
Sensor temperature-15 °C
Binning1x1
Exposure details3*35s
Observatory MPC codeA77
Location04 Dauban
Reference stars catalogUCAC-4
Photometry|Astrometry softwareASTROMETRICA
Observation submission date2018 Aug 17 15h05m33s
Observation modification date2018 Aug 17 16h47m07s

(Record n° 19514)

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