E. Schwab, Egelsbach, Germany, reports his recovery of comet P/2015 F1
(cf. CBET 4082) as an apparently stellar object in sets of twelve 60-s CCD
exposures taken remotely on each of three nights (Jan. 13, Feb. 13, and Feb.
14 UT) with the 0.8-m f/3 Schmidt reflector at Calar Alto, Spain, in
collaboration with D. Koschny, M. Micheli, and E. Petrescu. An additional
night of observation was obtained on Feb. 10 by D. Abreu with a 1.0-m f/4.4
reflector at the European Space Agency's Optical Ground Station at Tenerife
(in which the comet also appeared stellar in ten stacked 60-s CCD exposures),
as part of a collaboration with Micheli, Koschny, A. Knoefel, and M. Busch.
Schwab's measurements are tabulated below.
Epoch = 2021 Nov. 2.0 TT
T = 2021 Oct. 27.46649 TT Peri. = 187.50347
e = 0.2776720 Node = 40.38846 2000.0
q = 2.5432748 AU Incl. = 2.80286
a = 3.5209419 AU n = 0.14918178 P = 6.61 years