Abell 59 (Gary Imm)

Celestial hemisphere: Northern · Constellation: Sagitta (Sge) · Contains: PK053+03.1 · U Sge

Abell 59

This Abell PN, also known as PK 053+03.1, is located 4600 light years away in the constellation of Sagitta at a declination of +20 degrees. It is a magnitude 16 PN which spans 1.8 arc-minutes in our apparent view. This corresponds to a diameter of 2.5 light years.

This is one of those PNe that resemble a HII region, with the bright red HII arc at the top. I do not see a progenitor star.

I find the asymmetric red arc to be extremely unusual and I do not understand its formation as part of the PN development process. The arc lines up so well with the nebula rim that I do not believe we are looking at 2 separate superimposed objects. But then again, it is hard to comprehend how such a localized feature could be formed.

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Status	Advanced success
Started	...
Astrometry.net job	5838536
PixInsight job	T5DRQ0U63PWPK2X9M9J9U108QTQ2OCEH
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	19h18m39s.927
RA (top/left)	19h19m21s.822
RA (top/right)	19h17m57s.135
RA (bottom/right)	19h17m58s.860
RA (bottom/left)	19h19m22s.658

Dec (center)	+19°34′13″.58
Dec (top/left)	+19°41′30″.19
Dec (top/right)	+19°41′13″.25
Dec (bottom/right)	+19°26′55″.30
Dec (bottom/left)	+19°27′12″.96

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Abell 59

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