Region Aldebaran (RalfThielenPicart)

Celestial hemisphere: Northern · Constellation: Taurus (Tau) · Contains: Part of the constellation Taurus (Tau) · The star 88Tau · The star 90Tau · The star Aldebaran (αTau) · The star γTau · The star δ1Tau · The star δ3Tau · The star εTau · The star θ1Tau · The star θ2Tau · The star κ1Tau

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Region Aldebaran

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Region Aldebaran

Aldebaran is a binary star system about 67 light-years (20 parsecs) away. The main star is a red giant of spectral class K5 and luminosity class III. It is slightly variable with an irregular period with a brightness fluctuation of 0.2 mag. Means it fluctuates in its brightness. Aldebaran is 1.16 times the mass of the Sun, but nearly 45 times the diameter of the Sun and 150 times its luminosity.
Apparent magnitude is 0.87 mag, absolute magnitude is −0.71 mag. Its red color is also striking to the uninitiated observer.
Its companion (α Tauri B) is a red dwarf of the spectral class M2. It is not certain that the star is tied to Aldebaran. So permanently circled.
Aldebaran is one of the four Persian royal stars (Aldebaran, Regulus, Antares and Fomalhaut), also called the four sky guardians. This can be found in the constellation Taurus, also called Taurus.

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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	Basic success
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Astrometry.net job	5423650
PixInsight job	n/a
PixInsight queue size	n/a
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Region Aldebaran

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