The Orion Nebula (Peter Hannah)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: 41 Ori A) · 41 Ori C · 41 Ori D · 43 Ori) · Great Orion Nebula · M 42 · M 43 · Mairan's Nebula · NGC 1976 · NGC 1982 · Orion Nebula · The star Mizan Batil II (θ2 Ori · The star Trapezium (θ1 Ori A · The star θ1 Ori C · The star θ1 Ori D

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The Orion Nebula

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The Orion Nebula

One of the most famous deep sky objects, the Orion nebula is a stellar nursery where young, hot massive stars are irradiating the gas cloud from which they were born, causing it to glow and develop ripples, bubbles and bow shocks as the radiation plows into the gas. At least one bubble and a bow shock are visible in the image when zoomed. Starbirth continues today as many protostars have also been discovered in the nebula.

The main nebula is designated M42 while the smaller spherical structure adjacent to it is M43. They are about 1340 light years away and being situated near the celestial equator they are visible from northern and southern hemispheres.

At the heart of the nebula are four young stars known as the Trapezium, officially designated θ1 to θ4 Orionis. Their spectral types are O and B, the hottest and most massive known, and they may be as young as 300,000 years.

This is the closest star-forming region to the solar system. It is about 24 light years across and is one of the brightest nebulæ, being visible to the naked eye in all but the most light-polluted skies.

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	Basic success
Started	...
Astrometry.net job	8795647
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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The Orion Nebula

The Orion Nebula

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Image Index:

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The Orion Nebula

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