KW Sgr

MISCLASSIFIED MILKY WAY

Constellation
Sagittarius

Equatorial coordinates
α = 17 52 00.728
δ = -28 01 20.571

Galactic coordinates
l = 1.5070°
b = -0.7328°

Suspected	1973^Ref
Re-classified	2013^Ref
Type	red supergiant^Ref

Identifiers

KW Sgr	IRAS 17488-2800	GSC2.4.2 S8DZ000390	AAVSO 000-BCW-998
SIMBAD V* KW Sgr	Pan-STARRS 74372680030273403	SAO -	VSX 27956
GAIA DR3 4063462206570029312	SkyMapper -	WRAY -	GCVS KW Sgr
2MASS J17520073-2801205	HIP 87433	Hen -	BD -
WISE J175200.74-280120.6	TYC 6849-57-1	ESO -	HD 316496

Symbiotic Catalogs

Bidelman (1954)	-	Allen (1984)	-	Belzcyński et al. (2001)	-
Gaposchkin (1957)	-	Kenyon (1986)	-	Akras et al. (2019)	-
Boyarchuk (1969)	-	Vaidis (1988, 1991)	KW Sgr (Susp.)

Position

Right ascension (°)	268.0030^Ref	Parallax (mas)	0.436±0.073^Ref	Reddening E(B-V) (mag)	10.59±1.05^Ref ^{, Note}
Declination (°)	-28.0224^Ref	Distance (kpc)	2.18^Ref ^{, Note}, 2.16^Ref ^{, Note}
Galactic longitude (°)	1.5070^Ref	Proper motion in α (mas/yr)	0.84±0.06^Ref
Galactic latitude (°)	-0.7328^Ref	Proper motion in δ (mas/yr)	-0.95±0.04^Ref

Links

SIMBAD CDS Portal

Notes

Initially classified as a possible symbiotic star in Vaidis (1988), potentially due to its inclusion in Glass & Webster (1973). However, subsequent observations revealed that it is a red supergiant star, as confirmed by Arroyo-Torres et al. (2013).

References

Arroyo-Torres, B., Wittkowski, M., Marcaide, J. M. et al., 2013, A&A, 554, A76, 2013A&A...554A..76A
Glass, I. S., Webster, B. L., 1973, MNRAS, 165, 77, 1973MNRAS.165...77G
Vaidis, J.-P., 1988, BAFOE, 45, 13, 1988BAFOE..45...13V

Last updated: March 17, 2022