Credit & Copyright: John Chumack
Explanation:
Is this coat hanger a star cluster or an asterism?
This
cosmic hang-up has been debated over much of last century,
as astronomers wondered whether
this binocular-visible object
is
really a physically associated
open cluster or a
chance projection.
Chance star projections are known as
asterisms, an example of which is the popular
Big Dipper.
Recent precise measurements from different vantage points in the Earth's orbit around the Sun
have uncovered discrepant angular shifts indicating that the
Coat Hanger
is better described as an
asterism.
Known more formally as
Collinder 399,
this bright stellar grouping is wider than the
full moon and lies in the
constellation of the
Fox
(Vulpecula).
APOD is also available in:
Arabic,
Bahasa Indonesian,
Catalan,
Chinese,
Chinese,
Czech,
Dutch,
Farsi,
Farsi,
Galego,
German,
French,
Hebrew,
Japanese,
Korean,
Montenegrin,
Polish,
Russian,
Serbian,
Slovenian,
Spanish,
Thai, or
Turkish
1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 |
Yanvar' Fevral' Mart Aprel' Mai Iyun' Iyul' Avgust Sentyabr' Oktyabr' Noyabr' Dekabr' |
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
Publikacii s klyuchevymi slovami:
asterism - open cluster - Rasseyannoe skoplenie
Publikacii so slovami: asterism - open cluster - Rasseyannoe skoplenie | |
Sm. takzhe:
Vse publikacii na tu zhe temu >> |