Hemisphere:  Southern  ·  Constellation: Eridanus (Eri)  ·  Contains:  IC 2041  ·  NGC 1531  ·  NGC 1532
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Haley's Coronet - NGC 1531, 



    
        

            Warren A. Keller
Haley's Coronet - NGC 1531
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Haley's Coronet - NGC 1531

Getting plate-solving status, please wait...
Haley's Coronet - NGC 1531, 



    
        

            Warren A. Keller
Haley's Coronet - NGC 1531
Powered byPixInsight

Haley's Coronet - NGC 1531

Technical card

Basic astrometry details

Astrometry.net job: 4049499

RA center: 04h12m04s.1

DEC center: -32°5219

Pixel scale: 0.405 arcsec/pixel

Orientation: 213.926 degrees

Field radius: 0.326 degrees


Resolution: 4096x4096

Data source: Amateur hosting facility

Remote source: DeepSkyWest

Description

An Interacting Pair in Eridanus was discovered by James Dunlop in 1826, and is located about 55,000,000 light-years away, and spans about 200,000 light-years. The mass of the large galaxy, NGC 1532 is estimated to be slightly greater than our own Milky Way. Also known as Haley's Coronet, its structure is an irregular, barred spiral type, SB(s)b pec. The much smaller dwarf galaxy, NGC 1531 appears directly to the right of the larger one at 3 o'clock, and the two are locked in a gravitational struggle, which the smaller galaxy will eventually lose, being 'cannibalized' by the larger. Intense pink star-forming HII regions line the central dust lane. NGC 1532 and 1531 are part of a larger galaxy group that includes at least one other dwarf galaxy (9 and 12 o'clock) in the field of view. NGC 1531 is likened to our own satellite galaxy, the Large Magellanic Cloud. The luminance data was acquired by SSRO, and comprised a version that appeared as a 2019 APOD by Dr. Steve Mazlin. This version used color data from Deep Sky West- thank you Lloyd Smith!

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Haley's Coronet - NGC 1531, 



    
        

            Warren A. Keller