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C/2021 A1 (Leonard)


NASA/JPL elements
IAU/MPC elements


On 2021 Nov 30 06h05 UT by Francois Kugel


(Copyright Francois Kugel)

Coma Total magnitude (m1)8.5
Aperture radius used for m13.4 '
Nuclear magnitude (m2)11.1
m2 standard deviation0.0
Aperture radius used for m234.05 "
Coma diameter6.8 '
r (dist/Sun) 0.946 AU
d (dist/Earth) 0.558 AU
Right ascension13 14 56.94 h m s
Declination+30 25 06.1 ° ' "
MPC report
COD A77
CON FRANCOIS KUGEL [fkugel@free.fr]
OBS F. Kugel
MEA F. Kugel
TEL 0.076-m f/2.5 Camera lens + DSLR
ACK A77 file updated 2021.11.30 11:34:20
AC2 fkugel@free.fr
COM Photometry aperture radius used for m2 = 34.05 arcsec (5 pixels, 6.81 arcsec/pix)
COM Photometry aperture radius used for m1 = 3.4 arcmin (30 pixels, 6.81 arcsec/pix)
NET USNO-SA2.0
    CK21A010  C2021 11 30.25356 13 14 56.94 +30 25 06.1          11.1 V      A77
    CK21A010  C2021 11 30.25964 13 14 59.83 +30 24 53.7          11.1 V      A77
    CK21A010  C2021 11 30.26692 13 15 02.95 +30 24 41.4           8.5 T      A77
Instrumental configurationConfig7
Instrument typeCamera lens
Instrument aperture (0=naked eye)76 mm
Instrument focale length194 mm
Instrument focale/diameter2.8
Filter(s)None
Camera350D
SensorDC
Binning1x1
MountMeade-MCMT-TDM
Exposure total time900 s
Exposure details30x30s
Observatory MPC codeA77
Reference stars catalogUSNO-SA2.0
Resulting picture sampling (scale)6.81 "/pix
Observation submission date2021 Nov 30 12h02m59s
Observation modification date2021 Nov 30 12h06m16s

(Record n° 24466)

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