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21P/Giacobini-Zinner

Orbital period : 6.57 years

NASA/JPL elements
IAU/MPC elements


On 2018 Aug 22 20h34 UT by Francois Kugel


(Copyright Francois Kugel)

Coma Total magnitude (m1)8.6
Aperture radius used for m11.3 '
Nuclear magnitude (m2)10.5
m2 standard deviation0.3
Aperture radius used for m217.9 "
Afrho780 cm
Afrho error23 cm
Afrho URL for more infohttp://cara.uai.it/
r (dist/Sun) 1.050 AU
d (dist/Earth) 0.450 AU
Right ascension03 50 14.89 h m s
Declination+59 31 35.7 ° ' "
MPC report
COD A77
CON FRANCOIS KUGEL [fkugel@wanadoo.fr]
OBS F. Kugel
MEA F. Kugel
TEL 0.20-m f/2 Schmidt-Cassegrain + CCD
ACK MPCReport file updated 2018.08.23 16:50:57
AC2 fkugel@wanadoo.fr
NET USNO-SA2.0
0021P         C2018 08 22.85698 03 50 14.89 +59 31 35.7          10.2 R      A77
0021P         C2018 08 22.85992 03 50 16.49 +59 31 26.1          10.7 R      A77
0021P         C2018 08 22.86450 03 50 19.18 +59 31 09.3           8.6 T      A77
Instrumental configurationConfig4
Instrument typeSchmidt-Cassegrain
Instrument aperture (0=naked eye)200 mm
Instrument focale length400 mm
Instrument focale/diameter2
Filter(s)R (RGB)
Cameraasi294MCpro
SensorCCD
Sensor temperature-15 °C
Binning1x1
MountMeade MCMT
Exposure total time60 s
Exposure details2x30s
Air mass2.8
Observatory MPC codeA77
Reference stars catalogUSNO-SA2.0
Image resize factor1
Resulting picture sampling (scale)2.274 "/pix
Remarks or commentsTest Afrho with new CCD color ZWO ASI294MCpro. R channel.
Observation submission date2018 Aug 23 18h08m05s
Observation modification date2018 Aug 23 18h54m08s

(Record n° 19547)

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