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Wiederentdeckung: COMET P/2012 TK8 = P/2021 S2 (Tenagra)
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Autor:  Michael Möller [ 04. Oktober 2021, 04:09:58 AM ]
Betreff des Beitrags:  Wiederentdeckung: COMET P/2012 TK8 = P/2021 S2 (Tenagra)

COMET P/2012 TK8 = P/2021 S2 (Tenagra)

E. Schwab reports the recovery of comet P/2012 TK8 (Tenagra) in images
taken at Calar Alto-Schmidt (Z84) on Sep. 30 and Oct. 1 UT. He notes that
twelve stacked 60-s exposures show a tail about 10" long in p.a. about 270
degrees on each of the two nights.


P/2012 TK8 (Tenagra)
Epoch 2021 Nov. 2.0 TT = JDT 2459520.5
T 2021 Oct. 25.69838 TT Rudenko
q 2.9954300 (2000.0) P Q
n 0.11755149 Peri. 128.02939 +0.54015652 -0.83505972
a 4.1271534 Node 288.96560 +0.73338513 +0.52794832
e 0.2742140 Incl. 6.33996 +0.41276772 +0.15474443
P 8.38
From 70 observations 2012 Oct. 6-2021 Oct. 1, mean residual 0".8.

P/2012 TK8 (Tenagra)
Epoch 2030 Apr. 9.0 TT = JDT 2462600.5
T 2030 Mar. 27.88248 TT Rudenko
q 3.0118325 (2000.0) P Q
n 0.11689259 Peri. 128.26856 +0.53785920 -0.83655170
a 4.1426482 Node 288.88491 +0.73493630 +0.52592592
e 0.2729693 Incl. 6.33179 +0.41300862 +0.15356817
P 8.43
From 70 observations 2012 Oct. 6-2021 Oct. 1, mean residual 0".8.


MPEC 2021-T44

Autor:  Michael Möller [ 04. Oktober 2021, 04:30:05 AM ]
Betreff des Beitrags:  Re: Wiederentdeckung: COMET P/2012 TK8 = P/2021 S2 (Tenagra)

CBET 5048:

COMET P/2021 S2 = P/2012 TK_8 (TENAGRA)
E. Schwab, Egelsbach, Germany, reports his recovery of this comet (cf.
CBET 3262) on CCD images that he took with the 0.8-m f/3 Schmidt telescope at
Calar Alto, Spain, in a program with D. Koschny, M. Micheli, and E. Petrescu.
On each of the two nights, twelve 60-s stacked exposures show a tail about 10"
long in p.a. 270 degrees. The astrometry is tabulated below.

2021 UT R.A. (2000) Decl. Mag. Observer
Sept.30.15890 4 24 05.53 +28 23 08.0 20.0 Schwab
30.17118 4 24 05.71 +28 23 09.5 19.9 "
30.18346 4 24 05.91 +28 23 10.9 20.0 "
Oct. 1.15890 4 24 19.65 +28 24 39.6 19.7 "
1.17119 4 24 19.83 +28 24 40.7 19.8 "
1.18348 4 24 19.96 +28 24 42.2 19.8 "

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