PN SwSt 1

Constellation
Sagittarius

Equatorial coordinates
α = 18 16 12.276
δ = -30 52 07.934

Galactic coordinates
l = 1.5906°
b = -6.7176°

Suspected	2020^Ref
Re-classified	1987^Ref
Type	PN with [WC]-type central star^Ref

Identifiers

PN SwSt 1	IRAS 18129-3053	GSC2.4.2 S9SM000588	AAVSO 000-BDB-793
SIMBAD PN SwSt 1	Pan-STARRS 70952740511577611	SAO -	VSX 235673
GAIA DR3 4049331244394134912	SkyMapper -	WRAY 16-397	GCVS -
2MASS J18161228-3052078	HIP 89535	Hen -	BD -
WISE J181612.28-305207.9	TYC -	ESO -	HD -

Symbiotic Catalogs

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

Position

Right ascension (°)	274.0511^Ref	Parallax (mas)	0.343±0.110^Ref	Reddening E(B-V) (mag)	0.24±0.0^Ref ^{, Note}
Declination (°)	-30.8689^Ref	Distance (kpc)	3.97^Ref ^{, Note}, 3.40^Ref ^{, Note}
Galactic longitude (°)	1.5906^Ref	Proper motion in α (mas/yr)	-6.24±0.13^Ref
Galactic latitude (°)	-6.7176^Ref	Proper motion in δ (mas/yr)	-1.72±0.10^Ref

Links

SIMBAD CDS Portal

Notes

SIMBAD (Wenger et al., 2000) redirects SS73 149 to PN SwSt 1. Initially classified as a symbiotic star by Sanduleak & Stephenson, 1973, they highlighted its close proximity to MWC 288 (= Hen 2-377 = HD 167362; Henize (1967)) and cautioned against confusion with another star. However, in present times, SIMBAD (Wenger et al., 2000) considers these two as the same star.

References

Henize, K. G., 1967, ApJS, 14, 125, 1967ApJS...14..125H
Sanduleak, N., Stephenson, C. B., 1973, ApJ, 185, 899, 1973ApJ...185..899S
Wenger, M., Ochsenbein, F., Egret, D. et al., 2000, A&AS, 143, 9, 2000A&AS..143....9W