Kappa Draconis - a blue giant star (Thomas Richter)

Celestial hemisphere: Northern · Constellation: Draco (Dra) · Contains: 5 kap Dra · 6 Dra · The star 6Dra · The star κDra

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Kappa Draconis - a blue giant star

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Kappa Draconis - a blue giant star

From Wikipedia, the free encyclopedia:

Kappa Draconis, Latinized from κ Draconis, is a blue giant star located in the northern circumpolar constellation of Draco. At an apparent magnitude of 3.88, it is barely visible to the naked eye when artificial lighting from cities is present. Nevertheless, it is a powerful star, approximately five time as massive as the Sun. It is about 490 light-years away, and is 1,400 times brighter than the Sun.

Kappa is thought to be just entering its red giant phase, having exhausted the supply of hydrogen in its core. Over the next several thousand years, the star will expand, becoming more powerful but with a much cooler surface temperature. Tens of thousands of years from now, Kappa Draconis will appear much brighter, probably shining with a reddish hue.[citation needed]

The star is currently located at declination 69° 47' 18" North (RA 12h 33m 29.0s), but due to the effects of precession, Kappa Draconis was the nearest star to the North Celestial Pole visible to the naked eye from 1793 BC to approximately 1000 BC, though it was 6° removed from perfect alignment, making it only an approximate pole star, similar to the roughly 7° variance from perfect alignment of the much brighter (magnitude 2.08) star Kochab, at the same time during Earth's precession

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Astrofreunde-Franken

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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
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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	2655772
PixInsight job	EDLGJ58JZNI5MKD6P85AX5AOBBN8DMZM
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	12h34m45s.950
RA (top/left)	12h31m58s.950
RA (top/right)	12h31m51s.746
RA (bottom/right)	12h37m25s.992
RA (bottom/left)	12h37m44s.441

Dec (center)	+69°54′26″.26
Dec (top/left)	+70°16′49″.13
Dec (top/right)	+69°32′36″.48
Dec (bottom/right)	+69°31′55″.51
Dec (bottom/left)	+70°16′05″.11

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Kappa Draconis - a blue giant star

Kappa Draconis - a blue giant star

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Kappa Draconis - a blue giant star

Kappa Draconis - a blue giant star

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