Forum der Vereinigung der Sternfreunde

COMET P/2021 HS (PANSTARRS)

H. Sato reports detecting cometary activity in 2021 HS observed at
iTelescope Observatory (Q62) on Jul. 7 UT, noting a very condensed 8" coma on
7 stacked 60-second images. Additional reports of cometary features are as
follows:

OC Date Reporter Coma Tail PA Exposures

Q62 2021-07-06 H. Sato 12" 10x60s
L81 2021-07-09 L. Buzzi 6" 45" 220-280 30x60s
L81 2021-07-10 L. Buzzi 15" 200-250 30x60s


Orbital elements:
P/2021 HS (PANSTARRS)
Epoch 2021 Aug. 14.0 TT = JDT 2459440.5
T 2021 Aug. 6.38952 TT Rudenko
q 0.7964471 (2000.0) P Q
n 0.11464585 Peri. 46.08564 +0.60619213 +0.76737199
a 4.1965960 Node 262.39440 -0.77667528 +0.51462245
e 0.8102159 Incl. 12.17109 -0.17119175 +0.38249701
P 8.60
From 138 observations 2021 Apr. 10-Sept. 12, mean residual 0".5.

MPEC 2021-S44

_________________
Michael Möller (MMI)

auch cbet 5043
21 mag Mitte April.

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Uwe Pilz, Fachgruppen Kometen und Astrophysik/Algorithmen.
Oft benutzte Instrumente: Fujinon 16x70 FMT-SX-2, TMB Apo 105/650, Skywatcher Evostar 120/900 ED, Ninja Dobson 320/1440, Smartscope Dwarf-3