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C/2021 A1 (Leonard)


NASA/JPL elements
IAU/MPC elements


On 2021 Nov 22 04h40 UT by Francois Kugel


(Copyright Francois Kugel)

Coma Total magnitude (m1)9.9
Aperture radius used for m10.4 '
Nuclear magnitude (m2)12.7
m2 standard deviation0.1
Aperture radius used for m25.8 "
Afrho573 cm
Afrho error6 cm
r (dist/Sun) 1.067 AU
d (dist/Earth) 0.846 AU
Right ascension12 33 59.49 h m s
Declination+32 49 27.8 ° ' "
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 2021.11.22 08:00:52
AC2 fkugel@free.fr
NET USNO-B1.0
    CK21A010  C2021 11 22.19459 12 33 59.49 +32 49 27.8          12.7 I      A77
    CK21A010  C2021 11 22.20154 12 34 00.90 +32 49 23.5          12.6 I      A77
    CK21A010  C2021 11 22.20895 12 34 02.39 +32 49 19.5           9.9 T      A77
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-20 °C
Binning1x1
MountMeade-MCMT-TDM
Exposure details3x30s
Observatory MPC codeA77
Reference stars catalogUSNO-B1.0
Resulting picture sampling (scale)0.83 "/pix
Remarks or commentsAfrho (5000km)
Observation submission date2021 Nov 22 08h04m28s
Observation modification date2021 Nov 22 09h05m36s

(Record n° 24420)

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