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C/2021 A1 (Leonard)


NASA/JPL elements
IAU/MPC elements


On 2021 Dec 02 05h07 UT by Francois Kugel


(Copyright Francois Kugel)

Coma Total magnitude (m1)9.5
Aperture radius used for m10.4 '
Nuclear magnitude (m2)12.5
m2 standard deviation0.1
Aperture radius used for m25.8 "
Afrho456 cm
Afrho error7 cm
r (dist/Sun) 0.917 AU
d (dist/Earth) 0.487 AU
Right ascension13 32 11.14 h m s
Declination+29 06 40.9 ° ' "
MPC report
COD A77
CON FRANCOIS KUGEL [fkugel@free.fr]
OBS F. Kugel
MEA F. Kugel
TEL 0.4-m f/2.8 reflector + CCD
ACK A77 file updated 2021.12.02 08:49:41
AC2 fkugel@free.fr
NET USNO-B1.0
    CK21A010  C2021 12 02.21298 13 32 11.14 +29 06 40.9          12.5 I      A77
    CK21A010  C2021 12 02.21576 13 32 12.77 +29 06 33.1           9.5 T      A77
    CK21A010  C2021 12 02.22270 13 32 16.85 +29 06 13.0          12.4 I      A77
Instrumental configurationConfig2
Instrument typeNewton
Instrument aperture (0=naked eye)400 mm
Instrument focale length1120 mm
Instrument focale/diameter2.8
Filter(s)IR pro
CameraAtik460ex
SensorCCD
Sensor temperature-25 °C
Binning1x1
MountMeade-MCMT-TDM
Exposure details355s
Observatory MPC codeA77
Reference stars catalogUSNO-B1.0
Image resize factor0.4
Resulting picture sampling (scale)0.83 "/pix
Remarks or commentsAfrho (IR) 10000km
Observation submission date2021 Dec 02 10h08m20s
Observation modification date2021 Dec 02 20h43m29s

(Record n° 24488)

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