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NGC 744

NGC 744

NGC 744
Date de observație
Epoca J2000.0
Tipul obiectului roi deschis
Ascensie dreaptă (α) 01h 58m 36s
Declinație (δ) +55° 28′ 00″
Distanță 3.935 a.l.
(1207 [1] pc)
Magnitudine
aparentă
(V)
7,9[2]
Dimensiune aparentă 5,0 [2]
Constelație constelația Perseu
Caracteristici fizice
Masă M
Dimensione al
Magnitudine absolută
Coloare (B-V)
Descoperit
Descoperit de John Herschel
Data 28 noiembrie 1831
Nr. catalog 744

NGC 744 / Col 22 este un roi deschis situat în constelația Perseu.
A fost descoperit de astronomul britanic John Herschel în 1831. Potrivit clasificării roiurilor deschise, NGC 744 conține mai puțin de cincicizeci de stele (litera p) al căror magnitudini sunt repartizate pe un interval mediu (cifra 2). Concentrația stelelor este slabă (IV).

  1. ^ „WEBDA page for open cluster NGC 744, A site Devoted to Stellar Clusters in the Galaxy and the Magellanic Clouds”. Accesat în . 
  2. ^ a b „Revised NGC and IC Catalog by Wolfgang Steinicke”. Accesat în . 

Legături externe

[modificare | modificare sursă]
  • en NGC 744 sur spider.seds.org
  • en NGC 744 sur la base de données LEDA
  • en NGC 744 sur WikiSky
  • en NGC 744 sur le site du professeur C. Seligman
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NGC 744
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