C/2021 T1 (Lemmon) (Record n° 24101)
NASA/JPL elements
IAU/MPC elements
On 2021 Oct 07 02h16 UT by Jean-Gabriel Bosch
(Copyright Jean-Gabriel Bosch)Nuclear magnitude (m2) 18.8 m2 standard deviation 0.2 Aperture radius used for m2 5.8 " r (dist/Sun) 3.059 AU d (dist/Earth) 2.239 AU Right ascension 23 32 53.20 h m s Declination +43 24 43.3 ° ' " MPC report COD A77
CON J.-G. Bosch [JGBosch@free.fr]
OBS J.-G.Bosch
MEA J.-G. Bosch
COM 0.8"/pix m2=18.8 with 16x120s not tail diameter coma13"25
COM cometary appearance
TEL 0.4-m f/2.8 reflector + CCD
ACK MPCReport file updated 2021.10.07 18:20:40
AC2 JGBosch@free.fr
NET UCAC-4
C60DRY2 KC2021 10 07.09471 23 32 53.20 +43 24 43.3 19.1 R A77
C60DRY2 KC2021 10 07.10073 23 32 52.28 +43 24 38.9 18.6 R A77
C60DRY2 KC2021 10 07.10750 23 32 50.20 +43 24 29.3 18.8 R A77
Instrument NEWTON 400 Instrument type Newton Instrument aperture (0=naked eye) 400 mm Instrument focale length 1120 mm Instrument focale/diameter 2.8 Camera Atik 460ex Sensor CCD Sensor temperature -10 °C Binning 1x1 Mount Meade-MCMT-TDM Exposure details 20X2MIN Observatory MPC code A77 Location collonges sous salève Reference stars catalog UCAC-4
Used softwares ASTROMETRICA Resulting picture sampling (scale) 0.83 "/pix Observation submission date 2021 Oct 08 10h44m53s Observation modification date 2022 Apr 08 08h48m30s