SH2-174 An Ancient Mysterious Rose (Jeff Reitzel)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: LBN 598 · PGC 2783942 · PGC 2784344 · PGC 2784586 · PK120+18.1 · Sh2-174

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SH2-174 An Ancient Mysterious Rose

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SH2-174 An Ancient Mysterious Rose

Sh2-174 known as the Valentine's Rose Nebula is a faint but large planetary nebula located in the far northern sky. Seen in the Constellation Cepheus, it is somewhat obscured by the Integrated Flux Nebula that is so prevalent in this area of the sky. Originally discovered by Stewart Sharpless and cataloged as a planetary nebula, it's origins are being debated following modern studies. Normally planetary nebula are very symmetrical with a white dwarf at the center. In this case the nebula is very distorted with the white dwarf offset and located near the center of the blue area. There is some debate on the age of the dwarf star relative to the age of the surrounding nebula. Some estimates show the age of the star to be much older. We now know that this white dwarf is a hypervelocity star travelling at an estimated 66 km/sec relative to the surrounding dust and gas. Is this purely an interaction similar to the HFG-1 Nebula where a hypervelocity star crashes through the interstellar material producing a faint emission nebula with a bright blue bow shock wave? Or perhaps it started as a normal planetary nebula that is being distorted over time by the high speed interaction with that same interstellar material. Either way this most northern Sharpless object shows up as a beautiful Rosebud imaged at its narrow band emission lines.

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	Distinct awarded users	Total awarded images
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	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
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Star trails
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	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
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Professional, scientific grade data
Mix of multiple sources
Other
Unknown

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
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Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
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Status	Advanced success
Started	...
Astrometry.net job	8574735
PixInsight job	M9YLN92LAEWP303T9X2KTXE404QB21CN
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	23h47m12s.700
RA (top/left)	00h00m34s.580
RA (top/right)	23h33m35s.940
RA (bottom/right)	23h34m50s.910
RA (bottom/left)	23h59m51s.861

Dec (center)	+80°58′22″.10
Dec (top/left)	+81°18′18″.28
Dec (top/right)	+81°17′17″.86
Dec (bottom/right)	+80°36′48″.24
Dec (bottom/left)	+80°37′43″.28

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SH2-174 An Ancient Mysterious Rose

SH2-174 An Ancient Mysterious Rose

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SH2-174 An Ancient Mysterious Rose

SH2-174 An Ancient Mysterious Rose

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