CK Vulpeculae information

CK Vulpeculae
	; CK Vulpeculae taken by ALMA.; Credit: ALMA (ESO/NAOJ/NRAO)/S. P. S. Eyres
Observation data; Epoch J2000.0 Equinox J2000.0
Constellation	Vulpecula
Right ascension	19h 47m 38.0s
Declination	+27° 18′ 48″
Apparent magnitude (V)	max 2.6
Characteristics
B−V color index	0.7
Variable type	unknown
Astrometry
Distance	10000+3000; −2000 ly ; (3200+900; −600 pc)
Details
Luminosity	0.9 L☉
Temperature	14,000 – 100,000 K
Other designations
	CK Vulpeculae, CK Vul, Nova Vul 1670, HR 7539, 11 Vul
Database references
SIMBAD	data

CK Vulpeculae (also Nova Vulpeculae 1670) is an object whose exact nature is unknown.^[4] It was once considered to be the oldest reliably-documented nova. It consists of a compact central object surrounded by a bipolar nebula.

Models suggest CK Vulpeculae may not be a classic nova; rather it may be classified as a luminous red nova which is the result of two main sequence stars colliding and merging. A 2018 study found it was most likely the result of an unusual collision of a white dwarf and a brown dwarf. A 2020 article ruled out this proposed mechanism and proposes that CK Vulpeculae is an intermediate luminosity optical transient, i.e. an object in the luminosity gap between supernovae and novae.^[4]

^ "Through the Hourglass". www.eso.org. Retrieved 8 October 2018.
^ ^a ^b ^c Cite error: The named reference downes was invoked but never defined (see the help page).
^ ^a ^b ^c ^d Cite error: The named reference Evans2016 was invoked but never defined (see the help page).
^ ^a ^b ^c ^d Cite error: The named reference bane was invoked but never defined (see the help page).
^ Morton, Wagman (2003). Lost Stars. Blacksburg, Virginia: McDonald and Woodward. p. 494. ISBN 978-0-939923-78-6.

[1] "Through the Hourglass". www.eso.org. Retrieved 8 October 2018.

[downes-2] Cite error: The named reference downes was invoked but never defined (see the help page).

[Evans2016-3] Cite error: The named reference Evans2016 was invoked but never defined (see the help page).

[bane-4] Cite error: The named reference bane was invoked but never defined (see the help page).

[Morton2003-5] Morton, Wagman (2003). Lost Stars. Blacksburg, Virginia: McDonald and Woodward. p. 494. ISBN 978-0-939923-78-6.

Observation data Epoch J2000.0 Equinox J2000.0
CK Vulpeculae taken by ALMA.^[1] Credit: ALMA (ESO/NAOJ/NRAO)/S. P. S. Eyres
Constellation	Vulpecula
Right ascension	19^h 47^m 38.0^s^[2]
Declination	+27° 18′ 48″^[2]
Apparent magnitude (V)	max 2.6^[2]
Characteristics
B−V color index	0.7^[3]
Variable type	unknown^[3]
Astrometry

Distance	10000+3000 −2000^[4] ly (3200+900 −600^[4] pc)

Details

Luminosity	0.9^[3] `L`_☉
Temperature	14,000 – 100,000^[3] K

Other designations
CK Vulpeculae, CK Vul, Nova Vul 1670, HR 7539, 11 Vul^[5]
Database references
SIMBAD	data

CK Vulpeculae information

and 10 Related for: CK Vulpeculae information

CK Vulpeculae

Brown dwarf

Flamsteed designation

Intermediate luminosity optical transient

List of novae in the Milky Way galaxy

V1309 Scorpii

Anthelme Voituret

WY Sagittae

V605 Aquilae

List of largest stars