| 词条 | NGC 1987 |
| 释义 |
| name = NGC 1987 | image = File:NGC 1987 DSS.jpg | caption = The NGC 1987 open cluster | credit = | epoch = | constellation = Mensa | ra = {{RA|05|27|17.2}}[1] | dec = {{DEC|-70|44|15}}[1] | appmag_v = 12.1 [1] [2] | dist_ly = | dist_pc = | size_v = | age = | names = ESO 56-SC131, GC 1190, h 2885[3] }}NGC 1987 (also known as ESO 56-SC131) is an open cluster or a globular cluster located in the Mensa constellation and part of the Large Magellanic Cloud. It was discovered by John Herschel on November 3, 1834. Its apparent magnitude is 12.1, and its size is 1.7 arc minutes.[1][2][4] It is thought to be around 600 million years old and has a significant number of red ageing stars.[5] References1. ^1 2 3 {{cite web|url=http://spider.seds.org/ngc/revngcic.cgi?ngc1987|title=Object: NGC 1987 (*)|work=SEDS|accessdate=28 October 2017}} {{NGC20}}2. ^1 {{cite simbad|title=NGC 1987|accessdate=28 October 2017}} 3. ^{{cite web|url=http://spider.seds.org/ngc/ngc.cgi?1987|title=NGC 1987|work=SEDS|accessdate=28 October 2017}} 4. ^{{cite web|url=http://cseligman.com/text/atlas/ngc19a.htm#1987|title=NGC 1987 (in the Large Magellanic Cloud)|work=cseligman|accessdate=28 October 2017}} 5. ^{{cite book | chapter-url=https://books.google.com.au/books?id=F4lsaf2TTh4C&pg=PA229 | chapter= Infrared Imaging of Intermediate Age LMC/SMC Clusters | title=The Magellanic Clouds: Proceedings of the 148th Symposium of the International Astronomical Union, held in Sydney, Australia, July 9–13, 1990 | publisher=Springer Science & Business Media | location= New York |editor1-last=Haynes |editor1-first=Raymond |editor2-last=Milne |editor2-first=Douglas | isbn=9780792311102 | first=H. | last=Zinnecker | first2= F. | last2= Ferraro | first3= F. | last3= Fusi Pecci | first4= Alvio | last4= Renzini | first5= R. | last5= Buonanno| first6= C.E. | last6= Corsi| first7=D.M. | last7= Turndrup | pages=228–30| date= 1991-02-28 }} 7 : Open clusters|Large Magellanic Cloud|ESO objects|NGC objects|Mensa (constellation)|Astronomical objects discovered in 1834|Discoveries by John Herschel |
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