SH2-298 (Pedro Sánchez)

Celestial hemisphere: Southern · Constellation: Canis Major (CMa) · Contains: HD56157 · HD56183 · HD56257 · HD56274 · HD56501 · HD56525 · HD56594 · HD56830 · HD56831 · HD57027 · HD57057 · HD57084 · HD57256 · HD57369 · HD57543 · HD57610 · HD57752 · IC 468 · LBN 1040 · LBN 1041 · NGC 2359 · Sh2-298

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SH2-298

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SH2-298

Also known as 'Thor's Helmet', the central star and responsible for the ionization of the nebula, is the star Wolf-Rayet WR7 (HD 56925), an extremely hot star that is believed to be in a brief stage of previous evolution. to supernova.

It is similar in nature to the Bubble Nebula, but interactions with a nearby large molecular cloud are thought to have contributed to the more complex shape and curved impact structure of Thor's helmet. The nebula has an overall bubble shape, but with complex filamentous structures. The nebula contains several hundred solar masses of ionized material, plus several thousand more non-ionized gas. It is largely interstellar material blown away by winds from the central star, although some material appears to be enriched with the products of the fusion and is likely to have come directly from the star.

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Distribution of astrophotographers

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	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	7271611
PixInsight job	MFK9IL4Y0D3G98P4QBA2J50TDM5DK6HZ
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	07h18m31s.39
RA (top/left)	07h22m19s.62
RA (top/right)	07h14m43s.36
RA (bottom/right)	07h14m41s.83
RA (bottom/left)	07h22m20s.66

Dec (center)	-13°12′36″.1
Dec (top/left)	-12°35′09″.8
Dec (top/right)	-12°35′11″.9
Dec (bottom/right)	-13°49′53″.0
Dec (bottom/left)	-13°49′48″.9

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SH2-298

SH2-298

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SH2-298

SH2-298

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