Comets - 398P Boattini - 0398P
Type Periodic Perihelion Date 26 December 2020 Perihelion Distance (q) 1.3 Aphelion Distance (Q) 5.0 Period (Years) 5.5 Eccentricity (e) 0.58 Inclination (i) 11.0 Click for NASA orbit diagram
Hills Observatory: 1 January 2013 to 28 December 2020
COMETS COMETS
DEEP SKY DEEP SKY
398P/Boattini = 2009 Q4 = 2020 P2 Andrea Boattini discovered a 19th magnitude comet during the Catalina Sky Survey with the 0.68m Schmidt on 26 August 2009. Several amateur observers confirmed the cometary nature. Nicolas Erasmus of The ATLAS (Asteroid Terrestrial-impact Last Alert System) team discovered a 19th magnitude object in images taken with the 0.5m Schmidt at Mauna Loa on 11 August 2020. It was posted on the PCCP as A10oYh3 and the next day deleted and reported on the "Previous NEO Confirmation Page Objects" as P/2020 P2. There was no MPEC or CBET linked to it at this point. CBET 4829 was issued on 16 August 2020. After posting on the PCCP, Hirohisa Sato had noted that it appeared to be a recovery of 2009 Q4, some 10' from the expected position. The comet passed 0.55 au from Jupiter in June 1984. It will pass 0.4 au from the Earth in December 2020, when it could reach 14th magnitude. Date 10x10 mag Error Kphot mag Coma ' 07-Nov-20 15.89 0.01 14.3 0.8 17-Nov-20 15.33 0.01 13.5 1.3 06-Dec-20 14.47 0.01 11.7 2.4 14-Dec-20 14.26 0.01 11.8 2.4 20-Dec-20 14.35 0.03 11.7 2.3