Comet C/2021 S3 (PANSTARRS) (Taras Prystavski)

Celestial hemisphere: Southern · Constellation: Centaurus (Cen) · Contains: Solar system body or event

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Comet C/2021 S3 (PANSTARRS)

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Comet C/2021 S3 (PANSTARRS)

Comet C/2021 S3 (PANSTARRS)
2023 Dec. 10.30 UT m1=10.7: Dia.=2.5' Tail=21.7' in PA 238 deg... [T71] 0.18-m f/2.8 hyperbolic astrograph + CMOS... T. Prystavski (iTelescope observatory, X07 (remotely from Rio Hurtado Valley, Chile))

MPCReport_calibrated-T71-prystavski-CK21S030-20231209-040502-Luminance-BIN1-E-060-001+2.txt

C/2021 S3 (PANSTARRS)

Epoch 2023 Sept. 13.0 TT = JDT 2460200.5
T 2024 Feb. 14.7197 TT                                  Rudenko
q   1.320133             (2000.0)            P               Q
z  -0.000140       Peri.    6.8626      -0.7707403      +0.3989746              T = 2460355.21972 JDT
 +/-0.0000023      Node   215.6206      -0.6175863      -0.6595283              q =     1.3201326
e   1.000185       Incl.   58.5334      -0.1566733      +0.6370571

1/a(orig) = +0.000147 AU**-1, 1/a(fut) = +0.000062 AU**-1.

Light curve created using "Comet for Windows" software. Copyright(C) Seiichi Yoshida.

Other observations:
2021S3 2023 01 26.45 C 14.8:U4 32.0Y 9a540 & 0.5 & 0.9m343 ICQ XX PRYabI C 0.55m A4B 5 P5* 1.3s 1.3
2021S3 2023 02 05.46 C 14.8:U4 50.8C 4a540 & 0.49 & 0.7m348 ICQ XX PRYabI C 0.50m K6F A4B 5 P3* 1.7s 1.7
2021S3 2023 03 12.45 C 14.5 U4 43.1C 7a360 0.6 0.9m355 ICQ XX PRY01I C 0.61m A4B 5 P3* 1.8s 1.8

Comet observations 2023

Please note: The following tables are updated every 24 hours.

Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape
Artificial satellite

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Advanced success
Started	...
PixInsight job	5SCVH2PAJXXNRD4H6527MHTA20LIB6MG
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	13h32m02s.90
RA (top/left)	13h33m34s.28
RA (top/right)	13h28m24s.81
RA (bottom/right)	13h30m28s.12
RA (bottom/left)	13h35m38s.72

Dec (center)	-40°03′50″.6
Dec (top/left)	-39°25′57″.4
Dec (top/right)	-39°59′24″.10
Dec (bottom/right)	-40°41′38″.2
Dec (bottom/left)	-40°07′42″.6

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