Sakurai's Object

Sakurai's Object

Sakurai's Object (photo by ESO)
Observation data Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation	Sagittarius
Right ascension	17h 52m 32.69s[1]
Declination	−17° 41′ 08.0″[1]
Apparent magnitude (V)	10.90 - 21[2]
Characteristics
Spectral type	variable
Apparent magnitude (J)	11.555 ± 0.022[1]
U−B color index	+0.27[3]
B−V color index	+0.81[3]
V−R color index	+0.57[3]
Astrometry
Radial velocity (Rv)	−170 ± 30[4] km/s
Distance	1800-5000[5] pc
Details
Mass	0.6[6] M☉
Luminosity	~10,000 L☉
Other designations
V4334 Sgr, V4334 Sagittarii, 2MASS J17523269-1741080, DPV 1, Sakurai's variable, PN G010.4+04.4, GSC2 S2202011182877, Sakurai's Object, AAVSO 1746-17
Database references
SIMBAD	data

Sakuri's Object, also known as V4334 Sagittarii, is a star in the Sagittarius constellation.^{[7][8][9][10][11][12][13]}

It is thought it was a white dwarf that swelled and became a red giant. It is at the center of a planetary nebula. Sakurai's Object and other similar stars are expected to end up as helium-rich white dwarfs. They go through a "born-again" giant phase back to the white dwarf cooling track.

Sakuri's Object was discovered in 1996.^[14]