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COMET P/2021 R3 (PANSTARRS)
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Autor:  Michael Möller [ 12. September 2021, 01:13:45 AM ]
Betreff des Beitrags:  COMET P/2021 R3 (PANSTARRS)
COMET P/2021 R3 (PANSTARRS)

M. Jaeger reports cometary activity of an NEOCP candidate discovered by
Pan-STARRS 1 (F51) on Sep. 5 UT. In his follow-up observations taken later on
Sep. 5 at Stixendorf (A71) in sixteen 200-second images he notes a 10" coma.
Prediscovery positions were reported back to Jul. 2021. Additional reports of
cometary features are as follows:

A71 2021-09-10 M. Jaeger 9" 10x180s, 15x200s

Orbital elements:
P/2021 R3 (PANSTARRS)
Epoch 2021 May 26.0 TT = JDT 2459360.5
T 2021 May 27.33684 TT Rudenko
q 2.5255661 (2000.0) P Q
n 0.13412967 Peri. 3.06429 +0.60360647 +0.74581168
a 3.7796607 Node 304.25486 -0.73855135 +0.38989027
e 0.3318008 Incl. 19.93575 -0.30033504 +0.54013935
P 7.35
From 60 observations 2021 July 9-Sept. 10, mean residual 0".4.

P/2021 R3 (PANSTARRS)
Epoch 2028 Sept. 26.0 TT = JDT 2462040.5
T 2028 Sept. 15.85367 TT Rudenko
q 2.5102447 (2000.0) P Q
n 0.13486039 Peri. 2.69940 +0.59791289 +0.75026833
a 3.7659954 Node 304.18832 -0.74165972 +0.38431995
e 0.3334446 Incl. 19.94201 -0.30404117 +0.53795502
P 7.31
From 60 observations 2021 July 9-Sept. 10, mean residual 0".4.

P/2021 R3 (PANSTARRS)
Epoch 2021 July 5.0 TT = JDT 2459400.5
T 2021 May 27.26400 TT Rudenko
q 2.5255441 (2000.0) P Q
n 0.13410377 Peri. 3.04409 +0.60333439 +0.74603873
a 3.7801472 Node 304.25418 -0.73869457 +0.38963629
e 0.3318927 Incl. 19.93423 -0.30052944 +0.54000905
P 7.35
From 60 observations 2021 July 9-Sept. 10, mean residual 0".4.

MPEC 2021-R255 (2021 September 11)
Autor:  Michael Jäger [ 12. September 2021, 02:00:53 AM ]
Betreff des Beitrags:  Re: COMET P/2021 R3 (PANSTARRS)
Solche Objekte verlangen mit 12" zumindest 1 Stunde Belichtungszeit.

Dateianhänge:
P11kcfu20210910ut1946sec10x180and15x200.JPG
P11kcfu20210910ut1946sec10x180and15x200.JPG [ 345.03 KiB | 600 mal betrachtet ]
P11kcfu20210905ut2007sec16x200_2.jpg
P11kcfu20210905ut2007sec16x200_2.jpg [ 969 KiB | 600 mal betrachtet ]
Autor:  Uwe Pilz [ 12. September 2021, 20:14:51 PM ]
Betreff des Beitrags:  Re: COMET P/2021 R3 (PANSTARRS)
Auch cbet 5033
21,5 mag am 5. September

Micha ist wieder erwähnt:
Zitat:
M. Jaeger posted on the ICQ Comet Observations Facebook page that sixteen
stacked 200-s exposures taken on Sept. 5.9 UT with a 0.30-m reflector at
Stixendorf, Austria, show a possible coma of size 10".
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