Sh2-140 145 150 (Alberto Tomatis)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: The star 25 Cep · The star 26 Cep

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Sh2-140 145 150

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Sh2-140 145 150

Sh2-140 è una regione H II situata sul bordo sudoccidentale della nebulosa oscura LDN 1204, nella Bolla di Cefeo,

a una distanza di circa 900 parsec (2900 anni luce) dal Sole. La stella responsabile della ionizzazione dei gas della nebulosa è

HD 211880, una stella azzurra sulla sequenza principale; la temperatura delle polveri sarebbe di appena 35 K, mentre la sua massa sarebbe

pari a 600 masse solari.

Sh2 145 si tratta di una grande nebulosa di aspetto eterogeneo e disperso, privo di una struttura uniforme e suddivisa in più spezzoni;

si trova alla distanza di circa 900 parsec (oltre 2900 anni luce) in direzione delle associazioni stellari Cepheus OB2 e Cepheus OB3

e forse legata alla superbolla in espansione Cepheus Bubble. Nei suoi pressi sono state riconosciute alcune stelle responsabili

della sua ionizzazione: si tratta di HD 213023, una stella multipla di classe spettrale O9V, BD+62 2078, di classe O7V,

più due supergiganti blu di classe B.

Sh2-150 è una regione H II piuttosto estesa orientata in senso nord-sud poco a est di 26 Cephei; si trova alla distanza di circa 900 parsec

(oltre 2900 anni luce), la stessa della vicina nebulosa Sh2-145, e appare in direzione delle associazioni stellari Cepheus OB2 e

Cepheus OB3 e forse legata alla superbolla in espansione Cepheus Bubble.

Le responsabili della sua ionizzazione sarebbero due stelle azzurre: HD 213087 ha classe spettrale B0,5Ib ed è quindi una supergigante blu,

mentre HD 213405, di classe B0,5V, è una stella di sequenza principale.

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	6433860
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Sh2-140 145 150

Sh2-140 145 150

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Sh2-140 145 150

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