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- IRAS_23166+1655 abstract "IRAS 23166+1655 is thought to be a preplanetary nebula surrounding LL Pegasi (AFGL 3068), a binary system that includes an extreme carbon star. The pair is hidden by the dust cloud ejected from the carbon star and is only visible in infrared light.The nebula displays an unusual spiral shape. The shape is thought to be formed through the interaction between the stellar companion and the carbon star, as has been seen in other binary systems, although not with such a precise geometric form. The distance between spiral layers is consistent with estimates of the pair's orbital period based on their apparent angular separation. Its position is RA 23 19 12, Dec +17 11 35.Some say that, due to the regular appearance of spiral arms, the orbital period between LL Pegasi A (IRAS 23166+1655 A) and LL Pegasi B (IRAS 23166+1655 B) have an orbital period of c. 800 years.".
- IRAS_23166+1655 thumbnail Pre-planetary_nebula,_IRAS_23166+1655.jpg?width=300.
- IRAS_23166+1655 wikiPageExternalLink ap100914.html.
- IRAS_23166+1655 wikiPageExternalLink 5062638-celestial-spiral-goes-viral.
- IRAS_23166+1655 wikiPageExternalLink hubble-spots-ghostly-space-spiral.html.
- IRAS_23166+1655 wikiPageExternalLink hubble-spots-ghostly-space-spiral-t31055.html.
- IRAS_23166+1655 wikiPageExternalLink potw1020a.
- IRAS_23166+1655 wikiPageID "28732393".
- IRAS_23166+1655 wikiPageLength "3234".
- IRAS_23166+1655 wikiPageOutDegree "20".
- IRAS_23166+1655 wikiPageRevisionID "657178546".
- IRAS_23166+1655 wikiPageWikiLink Adaptive_optics.
- IRAS_23166+1655 wikiPageWikiLink Binary_star.
- IRAS_23166+1655 wikiPageWikiLink Binary_system.
- IRAS_23166+1655 wikiPageWikiLink Binary_system_(astronomy).
- IRAS_23166+1655 wikiPageWikiLink Carbon_star.
- IRAS_23166+1655 wikiPageWikiLink Category:C-type_stars.
- IRAS_23166+1655 wikiPageWikiLink Category:IRAS_catalogue_objects.
- IRAS_23166+1655 wikiPageWikiLink Category:Objects_named_with_variable_star_designations.
- IRAS_23166+1655 wikiPageWikiLink Category:Pegasus_(constellation).
- IRAS_23166+1655 wikiPageWikiLink Category:Protoplanetary_nebulae.
- IRAS_23166+1655 wikiPageWikiLink Guide_star.
- IRAS_23166+1655 wikiPageWikiLink Hubble_Space_Telescope.
- IRAS_23166+1655 wikiPageWikiLink IRAS_23166+1655_A.
- IRAS_23166+1655 wikiPageWikiLink IRAS_23166+1655_B.
- IRAS_23166+1655 wikiPageWikiLink Infrared.
- IRAS_23166+1655 wikiPageWikiLink Keck_II.
- IRAS_23166+1655 wikiPageWikiLink LL_Pegasi_A.
- IRAS_23166+1655 wikiPageWikiLink LL_Pegasi_B.
- IRAS_23166+1655 wikiPageWikiLink Nebula.
- IRAS_23166+1655 wikiPageWikiLink Protoplanetary_nebula.
- IRAS_23166+1655 wikiPageWikiLink Spiral.
- IRAS_23166+1655 wikiPageWikiLink W._M._Keck_Observatory.
- IRAS_23166+1655 wikiPageWikiLinkText "IRAS 23166+1655".
- IRAS_23166+1655 caption "Hubble Space Telescope image of IRAS 23166+1655, taken in the near-infrared. The bright object to the right is a star much closer to Earth. It was used as a guide star for adaptive optics corrections that allowed the Keck II telescope to resolve the LL Pegasi binary pair.".
- IRAS_23166+1655 hasPhotoCollection IRAS_23166+1655.
- IRAS_23166+1655 name "IRAS 23166+1655".
- IRAS_23166+1655 type "protoplanetary".
- IRAS_23166+1655 wikiPageUsesTemplate Template:Infobox_nebula.
- IRAS_23166+1655 wikiPageUsesTemplate Template:Nebula-stub.
- IRAS_23166+1655 wikiPageUsesTemplate Template:Reflist.
- IRAS_23166+1655 wikiPageUsesTemplate Template:Stars_of_Pegasus.
- IRAS_23166+1655 wikiPageUsesTemplate Template:Who.
- IRAS_23166+1655 subject Category:C-type_stars.
- IRAS_23166+1655 subject Category:IRAS_catalogue_objects.
- IRAS_23166+1655 subject Category:Objects_named_with_variable_star_designations.
- IRAS_23166+1655 subject Category:Pegasus_(constellation).
- IRAS_23166+1655 subject Category:Protoplanetary_nebulae.
- IRAS_23166+1655 comment "IRAS 23166+1655 is thought to be a preplanetary nebula surrounding LL Pegasi (AFGL 3068), a binary system that includes an extreme carbon star. The pair is hidden by the dust cloud ejected from the carbon star and is only visible in infrared light.The nebula displays an unusual spiral shape. The shape is thought to be formed through the interaction between the stellar companion and the carbon star, as has been seen in other binary systems, although not with such a precise geometric form.".
- IRAS_23166+1655 label "IRAS 23166+1655".
- IRAS_23166+1655 sameAs LL_Pegasi.
- IRAS_23166+1655 sameAs IRAS_23166+1655.
- IRAS_23166+1655 sameAs m.0czdcq6.
- IRAS_23166+1655 sameAs IRAS_23166+1655.
- IRAS_23166+1655 sameAs IRAS_23166+1655.
- IRAS_23166+1655 sameAs Q682126.
- IRAS_23166+1655 sameAs Q682126.
- IRAS_23166+1655 wasDerivedFrom IRAS_23166+1655?oldid=657178546.
- IRAS_23166+1655 depiction Pre-planetary_nebula,_IRAS_23166+1655.jpg.
- IRAS_23166+1655 isPrimaryTopicOf IRAS_23166+1655.