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kometare Aktivität: COMET C/2021 T1 (Lemmon)
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Autor:  Michael Möller [ 08. Oktober 2021, 10:02:57 AM ]
Betreff des Beitrags:  kometare Aktivität: COMET C/2021 T1 (Lemmon)

COMET C/2021 T1 (Lemmon)

R. Haver and R. Gorelli report cometary activity of an asteroidal NEOCP
candidate (submitted by Mount Lemmon Survey on Oct. 2 UT) in forty 90-second
images taken on Oct. 2 at Frasso Sabino Observatory (157), noting a diffuse 8"
coma. Prediscovery images were reported back to Sep. 2021. Additional reports
of cometary features are as follows:

OC Date Reporter Coma Tail PA Exposures

H06 2021-10-03 H. Sato 6" 14x60s
B49 2021-10-04 J. Camarasa 12" 10" 180
B96 2021-10-04 E. Bryssinck 8" 12" 317 30x90s



Orbital elements:
C/2021 T1 (Lemmon)
Epoch 2021 Nov. 2.0 TT = JDT 2459520.5
T 2021 Oct. 14.27740 TT Rudenko
q 3.0562765 (2000.0) P Q
z +0.0030994 Peri. 51.52751 +0.84505737 -0.02812947
+/-0.0013341 Node 56.78613 -0.02411421 -0.99960409
e 0.9905273 Incl. 140.34256 +0.53413158 -0.00062465
From 73 observations 2021 Sept. 15-Oct. 7, mean residual 0".9.

C/2021 T1 (Lemmon)
Epoch 2021 July 5.0 TT = JDT 2459400.5
T 2021 Oct. 14.25061 TT Rudenko
q 3.0563092 (2000.0) P Q
z +0.0031346 Peri. 51.51853 +0.84505972 -0.02804151
+/-0.0013341 Node 56.78383 -0.02398832 -0.99960662
e 0.9904196 Incl. 140.34123 +0.53413354 -0.00052820
From 73 observations 2021 Sept. 15-Oct. 7, mean residual 0".9.

MPEC 2021-T168

Autor:  Michael Möller [ 09. Oktober 2021, 06:29:45 AM ]
Betreff des Beitrags:  Re: kometare Aktivität: COMET C/2021 T1 (Lemmon)

auch CBET 5053
20 mag am 2.10.21

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