CBET 5003 & MPEC 2021-O39, issued on 2021, July 22, announce the discovery of a new comet (magnitude ~20.5) on CCD images taken on July 13.5 UT with the Pan-STARRS1 1.8-m Ritchey-Chretien reflector at Haleakala (numerous pre-discovery observations going back an additional month were later identified). The new comet has been designated C/2021 N3 (PANSTARRS).
Stacking of 16 unfiltered exposures, 180 seconds each, obtained remotely on 2021, July 14.3 from X02 (Telescope Live, Chile) through a 0.61-m f/6.5 astrograph + CCD, shows that this object is a comet with a compact coma about 9" arcsecond in diameter elongated toward PA 230 (Observers E. Guido, M. Rocchetto, E. Bryssinck, M. Fulle, G. Milani, C. Nassef, G. Savini, A. Valvasori).
Our confirmation image (click on the images for a bigger version; made with TYCHO software by D. Parrott)
MPEC 2021-O39, assigns the following preliminary orbital elements to comet C/2021 N3 (PANSTARRS): T 2020 Aug. 13.96; e= 0.96; Peri. = 303.99; q = 5.69 ; Incl.= 26.67
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| Credit: MPC |
by Ernesto Guido
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