| 词条 | NGC 1624 |
| 释义 |
| name = NGC 1624 | image = | caption = Image of NGC 1624 | credit = DSS | epoch = J2000 | constellation = Perseus | ra = {{RA|04|40|36.0}}[1] | dec = {{DEC|+50|27|42}}[1] | dist_ly = {{nowrap|20000 ± 2000 ly}} | dist_pc = {{nowrap|6000 ± 600 pc}}[2] | appmag_v = 11.8[1] | size_v = | age = <4 Myr[2] | notes = | names = C 0436+503, Collinder 53, OCl 403 }}NGC 1624 is a very young open cluster located in the constellation Perseus inside an emission nebula. It was discovered by the German-British astronomer William Herschel in 1790.[6] NGC 1624 is located at about 20,000 ly (6,000 pc) away and the latest estimates give an age of less than 4 million years.[2] The apparent magnitude is 11.8,[1] and apparent diameter is about 3.0 arc minutes.[3] Its celestial location is right ascension (α) {{RA|04|40|36.0}} and declination (δ) {{DEC|+50|27|42}}.[1] According to Robert Trumpler's classification of open clusters, this cluster contains less than 50 stars (letter p) with a high concentration (I) and whose magnitudes are distributed over an average interval (number 2). The letter n at the end (I2pn) means that the cluster is inside a nebula. References1. ^1 2 3 4 {{cite simbad|title=NGC 1624|accessdate=9 November 2017}} 2. ^1 2 {{cite simbad|title=Sejong Open Cluster Survey (SOS) - IV. The Young Open Clusters NGC 1624 and NGC 1931|doi=10.1088/0004-6256/149/4/127|arxiv=1502.00105|bibcode=2015AJ....149..127L}} 3. ^1 {{cite web|url=http://cseligman.com/text/atlas/ngc16.htm#1624|title=New General Catalogue objects: NGC 1600 - 1649|author=Seligman, Courtney|website=cseligman.com|accessdate=9 November 2017}} 3 : Open clusters|Perseus (constellation)|NGC objects |
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