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21P/Giacobini-Zinner

Orbital period : 6.57 years

NASA/JPL elements
IAU/MPC elements


On 2018 Jul 08 23h23 UT by Nicolas Biver


(Copyright Nicolas Biver)

Coma Total magnitude (m1)11.2
Aperture radius used for m11 '
Nuclear magnitude (m2)13.6
Aperture radius used for m24 "
Coma diameter2 '
Coma condensation degree (DC)5
r (dist/Sun) 1.348 AU
d (dist/Earth) 0.787 AU
Right ascension21 52 13.4 h m s
Declination+54 41 05.0 ° ' "
Instrumental configurationConfig1
InstrumentDobson 407 F/D 4.3
Instrument typeNewton
Instrument aperture (0=naked eye)407 mm
Instrument focale length1750 mm
Instrument focale/diameter4.29
Filter(s)None
Camerasony alpha 7s
SensorDC
Sensor size36x24 mm2
Sensor pixels number4240x2832
Binning2x2
Mountdobson
TrackingNo
AutoguideNo
Exposure total time20 s
Exposure details60x1/3s
Sky transparency (naked eye max mag)4.5
Seeing2
Moon phase123 °
Air mass1.1
LocationVersailles
Reference stars catalogGSC (HST)
Photometry|Astrometry softwareIRIS
Resulting picture sampling (scale)2.0 "/pix
Image processingalignement, somme, retrait gradient
Observation submission date2018 Jul 09 14h49m51s

(Record n° 19315)

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