Arp 321 - Hickson 40 (Gary Imm)

Celestial hemisphere: Southern · Constellation: Hydra (Hya) · Contains: PGC 1052765 · PGC 1053735 · PGC 1053957 · PGC 1054401 · PGC 1054492 · PGC 27508 · PGC 27509 · PGC 27513 · PGC 27515 · PGC 27516 · PGC 27517 · PGC 82490 · PGC 82508

Arp 321 - Hickson 40

This object is a group of 5 galaxies located 300 million light-years away in the constellation of Hydra. These are all tiny galaxies in our apparent view, each with a maximum diameter of about 1 minute. The group occupies a space about 2 minutes across.

None of these galaxies have NGC designations. From top to bottom, the 5 galaxies are a lenticular (MCG-1-25-12 / Mag. 14.1), two spirals (MGC 1-25-9 / Mag. 12.8 and MGC 1-25-11 / Mag. 16.4), an eliptical (MGC 1-25-8 / Mag. 13.1 ), and a third spiral (MCG 1-25-10 / Mag. 14.2). Although not readily apparent in my image, other studies have shown that most of these galaxies show evidence of interaction.

Final
Original
B

B

Description: Comparison to Original Arp Image

Uploaded: ...

The refractors!
Cloudy Nights
Arp's Peculiar Galaxies
ZWO ASI1600MM/QHY163M
Hickson Galaxy Clusters

Arp Catalog (Complete)
Galaxy Groups
Hickson Catalog (Complete)
Small Packages Catalog (Complete)

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	2600308
PixInsight job	XWRXZGV4GV1VV3S7MCDW5UV0MFSIJUU2
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	09h38m53s.490
RA (top/left)	09h37m48s.235
RA (top/right)	09h40m00s.443
RA (bottom/right)	09h39m57s.826
RA (bottom/left)	09h37m45s.692

Dec (center)	-04°50′59″.23
Dec (top/left)	-05°03′57″.50
Dec (top/right)	-05°03′06″.44
Dec (bottom/right)	-04°38′01″.50
Dec (bottom/left)	-04°38′51″.50

Image Index:

Contribution Index (beta):

Arp 321 - Hickson 40

Arp 321 - Hickson 40

Equipment

Acquisition details

Description

Comments

Revisions

B

Sky plot

Histogram

In these public groups

In these collections

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

Arp 321 - Hickson 40

Arp 321 - Hickson 40

Equipment

Acquisition details

Description

Comments

Revisions

B

Sky plot

Histogram

In these public groups

In these collections

Notifications

AstroBin is in READ ONLY mode

Sorry :-(

Sorry :-(

Sorry :-(

Are you really sure?

Warning!

Warning!

Are you sure?

Report abuse

Slideshow settings

IOTD/TP stats (last [x] days)

Distribution of astrophotographers

Distribution of subject types

Distribution of data sources

Sorry

Sorry

Share

Upload new revision

Upload uncompressed source (XISF/FITS/PSD/TIFF)

Delete image and all its revisions?

Delete original image?

Delete all other versions?

Delete all revisions?

Delete this revision?

IOTD/TP stats

The following people like this image

The following people bookmarked this image

Warning

Flag malfunctioning thumbnails

Contains

Remove yourself as a collaborator

Plate-solving information