NGC 2903 (Alberto Tomatis)

Celestial hemisphere: Northern · Constellation: Leo (Leo) · Contains: NGC 2903

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NGC 2903

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NGC 2903

NGC 2903 è una galassia a spirale barrata nella costellazione del Leone a circa 20,5
milioni di anni luce dal Sistema solare, ubicata a 1,5 gradi a sud di Alterf (λ Leonis).
È stata scoperta da William Herschel e catalogata il 16 novembre 1784. Si tratta di una
galassia luminosa magnitudine apparente 9,7 che si può osservare con i piccoli telescopi.

Questa è una galassia per molti versi simile alla Via Lattea. La sua dimensione è solo
leggermente più piccola della nostra, con una superficie di circa 80.000 anni luce.
Ma, a differenza della nostra, è più giovane ed ha un ammasso di stelle massicce brillanti al posto dell'globulare.

La regione centrale della galassia presenta un tasso eccezionale in termini di formazione
stellare, concentrate in un anello intorno al nucleo, che ha un diametro di poco più di
600 parsecs e comprende non solo un gran numero di giovani brillanti, ma anche un certo
numero di "nebulose ad emissione"
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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	5580395
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Contribution Index (beta):

NGC 2903

NGC 2903

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Image Index:

Contribution Index (beta):

NGC 2903

NGC 2903

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