Comet C/2021 S4 (Tsuchinshan) (Taras Prystavski)

Celestial hemisphere: Northern · Constellation: Perseus (Per) · Contains: Solar system body or event

Comet C/2021 S4 (Tsuchinshan)

Comet C/2021 S4 (Tsuchinshan)
2023 Dec. 22.46 UT m1=17.1 (m2=17.5) Dia.=0.2'... [T24] 0.61-m f/6.5 astrograph + CCD... T. Prystavski (iTelescope observatory, U69 (Auberry, California, USA))

U69_2023_12_26-1_multi.txt

MPCReport_calibrated-T24-prystavski-CK21S040-20231221-030308-Luminance-BIN2-W-120-001+2.txt

C/2021 S4 (Tsuchinshan)

Epoch 2023 Sept. 13.0 TT = JDT 2460200.5
T 2024 Jan. 2.1940 TT                                   Rudenko
q   6.689415             (2000.0)            P               Q
z  +0.006071       Peri.   72.8570      +0.2061711      -0.9780936              T = 2460311.69399 JDT
 +/-0.0000022      Node     5.4921      +0.7441154      +0.1376378              q =     6.6894149
e   0.959389       Incl.   17.4791      +0.6354414      +0.1561690

1/a(orig) = +0.006679 AU**-1, 1/a(fut) = +0.007604 AU**-1.

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

Other observations:
2021S4 2023 08 28.46 C 17.3 GG 61.0C 7a480 0.3 ICQ XX PRY01I C 0.34mFL9aKA9 A4B 5 P6* 1.3s 1.3

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

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	...
Astrometry.net job	8979680
PixInsight job	G2T95RTVNFEHG23X22G4I9X02V3M4CAM
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	04h40m02s.70
RA (top/left)	04h40m49s.20
RA (top/right)	04h39m18s.29
RA (bottom/right)	04h39m16s.90
RA (bottom/left)	04h40m47s.90

Dec (center)	+41°37′29″.8
Dec (top/left)	+41°45′26″.7
Dec (top/right)	+41°45′49″.9
Dec (bottom/right)	+41°29′46″.2
Dec (bottom/left)	+41°29′04″.2

Image Index:

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Comet C/2021 S4 (Tsuchinshan)

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Comet C/2021 S4 (Tsuchinshan)

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