Skip to content
NGC 457

File:BGC_457Cluster.png · Wikimedia Commons · See Wikimedia Commons

EntityQ730450· pop 42· linked from 993 articles

Also known as New General Catalogue 457, Owl Cluster, ET Cluster, C 13

open star cluster in the constellation Cassiopeia

Key facts

Right ascension
01 19 32.6
Declination
+58 ° 17 ′ 27 ″
Distance
7.922 kly (2.429 kpc )
Apparent dimensions v
13.0′
Other designations
Owl Cluster, E.T. Cluster, Caldwell 13, Cr 12, Mel 7, OCL 321, Lund 43, H VII-42, h 97, GC 256
Constellation
Cassiopeia

via Wikipedia infobox

Wikidata facts

Instance of
open cluster
Part of
Milky Way
Constellation
Cassiopeia
Distance from Earth
2429
Image
NGC457.jpg
Show 11 more facts
Commons category
NGC 457
catalog code
[KPS2012] MWSC 0114
discoverer or inventor
William Herschel
time of discovery or invention
1787-10-18
apparent magnitude
6.4
right ascension
19.8958
declination
58.2867
radial velocity
-27.1
epoch
J2000.0
right ascension component of proper motion
-2.69
declination component of proper motion
-1.89
Sources (1)

via Wikidata · CC0

Article · 中文

NGC 457,或稱為貓頭鷹星團(Owl Cluster)、ET星團(ET Cluster)、科德韋爾13(Caldwell 13),是位於仙后座的疏散星團,由威廉·赫歇爾發現於1787年,距離太陽約7900光年。她的年齡約2100萬年。業餘天文學界常稱該星團為「貓頭鷹星團」、「星團」、「ET星團」(外觀類似電影E.T.外星人中的外星人角色)、「滑雪星團」。NGC 457有兩顆較亮的恆星,分別是視星等5等的仙后座φ-1和7等的φ-2。該星團大約有150顆視星等12到15等的恆星。

Abstract from DBpedia / Wikipedia · CC BY-SA

Gallery (3)