Forum der Vereinigung der Sternfreunde :: Wiederentdeckung: COMET P/1997 B1 = P/2021 W2 (Kobayashi)

COMET P/1997 B1 = P/2021 W2 (Kobayashi)

An object observed on Jan. 11 UT at Purple Mountain Observatory, XuYi
Station, reported as an NEOCP candidate was identified by the MPC as being a
recovery of comet P/1997 B1 (Kobayashi). The MPC then located an ITF tracklet
taken on 2021 Nov. 29 at Kitt Peak-Bok (V00). Additional detections were
subsequently found by R. Weryk in Pan STARRS 1 (F51) and Pan STARRS 2 (F52)
images from Nov. 2021 and Jan. 2022, noting a very condensed coma and 2" tail
in the Jan. images.

Orbital elements:

P/1997 B1 (Kobayashi)
Epoch 2022 Jan. 21.0 TT = JDT 2459600.5
T 2022 Mar. 29.95504 TT Rudenko
q 2.0562275 (2000.0) P Q
n 0.03919033 Peri. 183.32043 -0.88391039 -0.45442798
a 8.5838762 Node 328.88214 +0.43383957 -0.70862685
e 0.7604547 Incl. 12.33958 +0.17460141 -0.53976218
P 25.1
From 263 observations 1997 Jan. 30-2022 Jan. 11, mean residual 0".6.

Autor:	Michael Möller [ 12. Januar 2022, 05:03:08 AM ]
Betreff des Beitrags:	Wiederentdeckung: COMET P/1997 B1 = P/2021 W2 (Kobayashi)
MPEC 2022-A164 : Zitat: COMET P/1997 B1 = P/2021 W2 (Kobayashi) An object observed on Jan. 11 UT at Purple Mountain Observatory, XuYi Station, reported as an NEOCP candidate was identified by the MPC as being a recovery of comet P/1997 B1 (Kobayashi). The MPC then located an ITF tracklet taken on 2021 Nov. 29 at Kitt Peak-Bok (V00). Additional detections were subsequently found by R. Weryk in Pan STARRS 1 (F51) and Pan STARRS 2 (F52) images from Nov. 2021 and Jan. 2022, noting a very condensed coma and 2" tail in the Jan. images. Orbital elements: P/1997 B1 (Kobayashi) Epoch 2022 Jan. 21.0 TT = JDT 2459600.5 T 2022 Mar. 29.95504 TT Rudenko q 2.0562275 (2000.0) P Q n 0.03919033 Peri. 183.32043 -0.88391039 -0.45442798 a 8.5838762 Node 328.88214 +0.43383957 -0.70862685 e 0.7604547 Incl. 12.33958 +0.17460141 -0.53976218 P 25.1 From 263 observations 1997 Jan. 30-2022 Jan. 11, mean residual 0".6.

Autor:	Michael Möller [ 12. Januar 2022, 09:26:33 AM ]
Betreff des Beitrags:	Re: Wiederentdeckung: COMET P/1997 B1 = P/2021 W2 (Kobayashi)
auch CBET 5092: The comet is a couple of magnitudes fainter than the power-law parameters suggest from the 1997 observations (which, however, were all made closer to and after perihelion in 1997 than the 2021-2022 observations). While assuming that an outburst may have occurred in 1997, an average absolute magnitude is assumed for the ephemeris magnitudes below (H = 15.0, 2.5n = 10).

Autor:	Michael Möller [ 12. Januar 2022, 15:14:56 PM ]
Betreff des Beitrags:	Re: Wiederentdeckung: COMET P/1997 B1 = P/2021 W2 (Kobayashi)
Francois Kugel hat den Kometen heute Morgen aufgenommen: https://www.facebook.com/photo/?fbid=89 ... 4535656399

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