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- Winnecke_4 abstract "Winnecke 4 (also known as Messier 40 or WNC 4) is a double star in the constellation Ursa Major. It was discovered by Charles Messier in 1764 while he was searching for a nebula that had been reported in the area by Johann Hevelius. Not seeing any nebulae, Messier catalogued this double star instead. It was subsequently rediscovered by Friedrich August Theodor Winnecke in 1863, and included in the Winnecke Catalogue of Double Stars as number 4. Burnham calls M40 "one of the few real mistakes in the Messier catalog," faulting Messier for including it when all he saw was a double star, not a nebula of any sort.In 1991 the separation between the components was measured at 51".7, an increase since Messier's time. Data gathered by astronomers Brian Skiff (2001) and Richard L. Nugent (2002) strongly suggest that this is merely an optical double star rather than a physically connected system.".
- Winnecke_4 thumbnail Winnecke_4.jpg?width=300.
- Winnecke_4 wikiPageExternalLink Astro-DSO-M40.htm.
- Winnecke_4 wikiPageID "962130".
- Winnecke_4 wikiPageRevisionID "596957052".
- Winnecke_4 appmagV "9.65".
- Winnecke_4 constell Ursa_Major.
- Winnecke_4 dec "+58° 4' 59"".
- Winnecke_4 distLy "510".
- Winnecke_4 distPc "156".
- Winnecke_4 epoch Epoch_(astronomy).
- Winnecke_4 hasPhotoCollection Winnecke_4.
- Winnecke_4 names "M40, BD+56 1372, HD 238107 + HD 238108, SAO 28353 + SAO 28355, CCDM 12223+5805".
- Winnecke_4 ra "44532.5".
- Winnecke_4 spectral "G0+F8".
- Winnecke_4 subject Category:Double_stars.
- Winnecke_4 subject Category:Messier_objects.
- Winnecke_4 subject Category:Orion–Cygnus_Arm.
- Winnecke_4 subject Category:Ursa_Major_(constellation).
- Winnecke_4 subject Category:WNC_objects.
- Winnecke_4 type CelestialBody.
- Winnecke_4 type Star.
- Winnecke_4 type PhysicalBody.
- Winnecke_4 comment "Winnecke 4 (also known as Messier 40 or WNC 4) is a double star in the constellation Ursa Major. It was discovered by Charles Messier in 1764 while he was searching for a nebula that had been reported in the area by Johann Hevelius. Not seeing any nebulae, Messier catalogued this double star instead. It was subsequently rediscovered by Friedrich August Theodor Winnecke in 1863, and included in the Winnecke Catalogue of Double Stars as number 4.".
- Winnecke_4 label "M 40 (двойная звезда)".
- Winnecke_4 label "M40 (astronomia)".
- Winnecke_4 label "M40 (天体)".
- Winnecke_4 label "M40 (雙星)".
- Winnecke_4 label "Messier 40".
- Winnecke_4 label "Messier 40".
- Winnecke_4 label "Winnecke 4".
- Winnecke_4 label "Winnecke 4".
- Winnecke_4 label "Winnecke 4".
- Winnecke_4 label "Winnecke 4".
- Winnecke_4 label "Winnecke 4".
- Winnecke_4 label "مسييه 40".
- Winnecke_4 sameAs Messier_40.
- Winnecke_4 sameAs Winnecke_4.
- Winnecke_4 sameAs Winnecke_4.
- Winnecke_4 sameAs Messier_40.
- Winnecke_4 sameAs Winnecke_4.
- Winnecke_4 sameAs Winnecke_4.
- Winnecke_4 sameAs M40_(astronomia).
- Winnecke_4 sameAs M40_(天体).
- Winnecke_4 sameAs 메시에_40.
- Winnecke_4 sameAs Winnecke_4.
- Winnecke_4 sameAs Messier_40.
- Winnecke_4 sameAs Winnecke_4.
- Winnecke_4 sameAs m.03tq2w.
- Winnecke_4 sameAs Q13886.
- Winnecke_4 sameAs Q13886.
- Winnecke_4 wasDerivedFrom Winnecke_4?oldid=596957052.
- Winnecke_4 depiction Winnecke_4.jpg.
- Winnecke_4 isPrimaryTopicOf Winnecke_4.