399P/PANSTARRS (0399P)
TRY AGAIN 2027
Type: Periodic
Perihelion date: 22 May 2021
Perihelion distance (q): 2.1
Aphelion distance (Q) : 5.5
Period (years): 7.4
Eccentricity (e): 0.45
Inclination (i): 13.3
JPL orbit diagram
COBS lightcurve
399P/PanSTARRS = 2013 O2 = 2020 O4
Pan-STARRS discovered a 21st magnitude comet on 16 July 2013. It makes
occasional approaches to Jupiter, most recently to within 0.3 au in 1994. This
reduced the perihelion distance from 2.6 au to its present value.
Syuichi Nakano noticed that recovery observations of 2013 O2 had been published in
recent MPECs listing observations of comets (2020-P19, Q175 and R04). The
earliest observations (30 July 2020) were by Mt Lemmon, with several other
observers/observatories including Werner Hasubick at Buchloe also observing the
comet. Nakano then computed a linked orbit and an MPEC was issued giving a
designation, followed by the CBET.
Observations (VEMag = visual equivalent magnitude)
Date
10x10 mag
Error
VEmag
Coma '
27-Oct-13
18.93
0.13
18.3
0.1
09-Nov-13
18.68
0.24
17.9
0.2
27-Dec-13
19.55
0.13
19.2
0.2