NGC 6871

NGC 6871
NGC 6871
	NGC 6871, taken from Stellarium
Observation data (J2000 epoch)
Constellation	Cygnus
Right ascension	20h 05m 59s
Declination	+35° 46.6′
Distance	5133 ly (1574 pc)
Apparent magnitude (V)	5.2
Physical characteristics
Mass	- M☉
Radius	-
Estimated age	9.1 million years
Notable features	Presence of eclipsing binary stars
Other designations	GC 4548, h 2067, Struve 2630
	See also: Open cluster, List of open clusters

NGC 6871 is a small, young open cluster in the constellation of Cygnus. The cluster has fewer than 50 members, most of which are blue and white stars. It is located 5135 light-years from Earth.

Map showing location of NGC 6871

Prominent stars
Star name	Effective temperature	Absolute magnitude	Bolometric magnitude	Mass (`M`_☉)	Spectral type	Ref.
HD 190864	39900	-5.5	-9.3	45	O7III	^[5]
HD 226868	33000	-6.4	-9.6	40	O9.7I	^[5]
HD 227018	41000	-4.9	-8.8	38	O7V	^[5]
HD 191201	31600	-5.8	-8.9	35	B0V	^[5]
WR 133 A	70800	-3.4	-8.81	9.3	WN5o	^[5]^[6]
ADS 13374 B (Companion to WR 133 A, also WR 133 B)	30000	-5.4	-8.49	22.6	O9.5I	^[5]^[6]
HD 227634	29500	-5.3	-8.2	25	B0.2III	^[5]
HD 190919	26300	-5.8	-8.3	25	B1Ib	^[5]
BD+35 3955	26300	-5.7	-8.3	24	B1Ib	^[5]

References[]

^ ^a ^b "NGC 6871". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2012-09-21.
^ "Results for NGC 6871". WEBDA Database. Retrieved 2012-09-21.
^ ^a ^b "Results for NGC 6871". SEDS' Interactive NGC Catalog Online. Retrieved 2012-09-21.
^ "Astronomy Magazine". NGC 6871 - open cluster in Cygnus. Retrieved 2015-08-18.
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Massey, P.; Degioia-Eastwood, K.; Waterhouse, E. (2001). "The Progenitor Masses of Wolf-Rayet Stars and Luminous Blue Variables Determined from Cluster Turnoffs. II. Results from 12 Galactic Clusters and OB Associations". The Astronomical Journal. 121 (2): 1050–1070. arXiv:astro-ph/0010654. Bibcode:2001AJ....121.1050M. doi:10.1086/318769.
^ ^a ^b Richardson, Noel D.; Lee, Laura; Schaefer, Gail; Shenar, Tomer; Sander, Andreas A. C.; Hill, Grant M.; Fullard, Andrew G.; Monnier, John D.; Anugu, Narsireddy; Davies, Claire L.; Gardner, Tyler (2021-02-01). "The First Dynamical Mass Determination of a Nitrogen-rich Wolf-Rayet Star Using a Combined Visual and Spectroscopic Orbit". The Astrophysical Journal Letters. 908: L3. arXiv:2101.04232. doi:10.3847/2041-8213/abd722. ISSN 0004-637X.

External links[]

Media related to NGC 6871 at Wikimedia Commons
NGC 6871 at WEBDA
NGC 6871 at Bernhard Hubl's Astrophotography
NGC 6871 at Astronomy Magazine

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[simbad-1] "NGC 6871". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2012-09-21.

[WEBDA-2] "Results for NGC 6871". WEBDA Database. Retrieved 2012-09-21.

[SEDS-3] "Results for NGC 6871". SEDS' Interactive NGC Catalog Online. Retrieved 2012-09-21.

[Astronomy_Magazine-4] "Astronomy Magazine". NGC 6871 - open cluster in Cygnus. Retrieved 2015-08-18.

[Massey-5] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Massey, P.; Degioia-Eastwood, K.; Waterhouse, E. (2001). "The Progenitor Masses of Wolf-Rayet Stars and Luminous Blue Variables Determined from Cluster Turnoffs. II. Results from 12 Galactic Clusters and OB Associations". The Astronomical Journal. 121 (2): 1050–1070. arXiv:astro-ph/0010654. Bibcode:2001AJ....121.1050M. doi:10.1086/318769.

[:0-6] Richardson, Noel D.; Lee, Laura; Schaefer, Gail; Shenar, Tomer; Sander, Andreas A. C.; Hill, Grant M.; Fullard, Andrew G.; Monnier, John D.; Anugu, Narsireddy; Davies, Claire L.; Gardner, Tyler (2021-02-01). "The First Dynamical Mass Determination of a Nitrogen-rich Wolf-Rayet Star Using a Combined Visual and Spectroscopic Orbit". The Astrophysical Journal Letters. 908: L3. arXiv:2101.04232. doi:10.3847/2041-8213/abd722. ISSN 0004-637X.

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