Sirius (Minos Kritikos)

Celestial hemisphere: Southern · Constellation: Canis Major (CMa) · Contains: 11 CMa · 8 nu.03 CMa · 9 alf CMa · Canis Major · IC 2171 · IC 452 · NGC 2283 · NGC 2296 · PK228-11.1 · Sirius · The star 11CMa · The star Sirius (αCMa) · The star ν3CMa

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Sirius

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Sirius

Sirius - Ostensibly the brightest star in the northern hemisphere with a visual magnitude of -1.46. It's etymology stems from the Ancient Greek word - Σείριος (Seirios), meaning "glowing" or "scorcher". It is a binary star, consisting of a white main sequence star (Sirius A) that is twice the size of our sun but 25 times more luminous and a white dwarf (Sirius B) that is similar in mass to our sun, but packed in a volume akin to that of Earth. Sirius is relatively close to Earth, at 8.6 light years away and will continue to dominate the Earth night sky with its brilliance for the next 210,000 years. This 300 million year old star is also known as the “Dog Star”, aptly positioned in the constellation Canis Major (Greater Dog). For the Ancient Egyptians, the rise of Sirius marked the rise and flooding of the great river Nile and was worshipped by them as the goddess Sopdet. This single 20 minute exposure pointed at the western sky last midnight, demonstrates its ‘seriously’ bright luminosity, amidst a rich starfield background.

Stars

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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	1480953
PixInsight job	ADSJ51LFO0PV5GUAY7ZIK8H09V8EB78C
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	06h44m47s.9
RA (top/left)	06h51m17s.1
RA (top/right)	06h51m50s.3
RA (bottom/right)	06h38m28s.1
RA (bottom/left)	06h37m34s.5

Dec (center)	-16°39′06″
Dec (top/left)	-19°10′56″
Dec (top/right)	-14°13′13″
Dec (bottom/right)	-14°06′39″
Dec (bottom/left)	-19°03′51″

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Sirius

Sirius

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Image Index:

Contribution Index (beta):

Sirius

Sirius

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

In these collections

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