208P/McMillan (0208P)

Type: Periodic Perihelion date: 23 August 2024 Perihelion distance (q): 2.5 Aphelion distance (Q) : 5.5 Period (years): 8.1 Eccentricity (e): 0.37 Inclination (i): 4.4 JPL orbit diagram COBS lightcurve 208P/McMillan = 2000 S7 = 2008 U1 Robert McMillan discovered a 19th magnitude comet with the Spacewatch 1.8-m reflector on 19 October 2008. Further prediscovery images back to 20 September were found in Spacewatch imagery. The comet was at perihelion in mid May. In December 2008, S Nakano linked the comet with previously unreported observations of an 18th magnitude object obtained by LONEOS in September and October 2000. This return was designated 2000 S7. The comet passed 0.18 AU from Jupiter on 8 July 2004. The comet is suspected to have undergone nuclear splitting (linked to 2011 Q3 P/McNaught) according to the list of Marcos & Marcos [Dynamically correlated minor bodies in the outer solar system, MNRAS, 474, 838, 2018 February]. Observations (VEMag = visual equivalent magnitude) Date 10x10 mag Error VEmag Coma ' 05-Aug-24 19.7 0.4 09-Aug-24 19.4 0.4 30-Aug-24 19.3 0.4 06-Sep-24 19.0 0.4