NGC 2244

Celestial hemisphere: Northern · Constellation: Monoceros (Mon) · Contains: NGC 2239 · NGC 2244 · NGC 2252 · Rosette nebula · The star 12Mon

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NGC 2244

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NGC 2244

Ha = 28x10 min

L = 31x3min

RGB = 13x3min par couche

Seeing entre 4 et 5 arc/sec sur les brutes

NGC 2244, aussi connu sous le nom de Caldwell 50, est un très jeune amas ouvert situé dans la constellation de la Licorne.

NGC 2244 est à environ 1 445 pc (∼4 710 a.l.) du système solaire. La taille apparente de l'amas est de 24 minutes d'arc, ce qui, compte tenu de la distance, donne une taille réelle maximale d'environ 33 années-lumière. L'âge de cet amas est estimé à environ 8 millions d'années.

Selon la classification des amas ouverts de Robert Trumpler, cet amas renferme moins de 50 étoiles (lettre p) dont la concentration est moyenne (II) et dont les magnitudes se répartissent sur un grand intervalle (le chiffre 3).

Ses deux étoiles les plus brillantes sont HD 46223, de type spectral O4V, qui est 400 000 fois plus brillante et 50 fois plus massive que le Soleil, et HD 46150, de type spectral O5V, laquelle est 450 000 fois plus lumineuse et 60 fois plus massive que notre étoile.

Source : Wikipedia.

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	1465121
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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