PN Hb 7

Constellation
Sagittarius

Equatorial coordinates
α = 18 55 37.799
δ = -32 15 48.664

Galactic coordinates
l = 3.9636°
b = -14.9025°

Suspected	1974^Ref
Re-classified	1992^Ref
Type	PN^Ref

Identifiers

PN Hb 7	IRAS 18523-3219	GSC2.4.2 S9UU225333	AAVSO -
SIMBAD PN Hb 7	Pan-STARRS 69282839074824058	SAO -	VSX -
GAIA DR3 6759935304494857984	SkyMapper 185537.80-321548.6	WRAY 16-422	GCVS -
2MASS J18553780-3215485	HIP -	Hen 2-425	BD -
WISE J185537.83-321548.5	TYC -	ESO 458-9	HD 175194

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 (°)	283.9075^Ref	Parallax (mas)	0.198±0.057^Ref	Reddening E(B-V) (mag)	0.12±0.0^Ref ^{, Note}
Declination (°)	-32.2635^Ref	Distance (kpc)	4.28^Ref ^{, Note}, 4.41^Ref ^{, Note}
Galactic longitude (°)	3.9636^Ref	Proper motion in α (mas/yr)	-4.01±0.06^Ref
Galactic latitude (°)	-14.9025^Ref	Proper motion in δ (mas/yr)	-6.90±0.05^Ref

Links

SIMBAD CDS Portal

Notes

In Allen & Glass (1974), it was suggested, based on infrared photometry, that this southern PN shows a continuum similar to symbiotic and VV Cephei stars. It was listed as a true PN in Acker et al. (1992).

References

Acker, A., Marcout, J., Ochsenbein, F. et al., 1992, The Strasbourg-ESO Catalogue of Galactic Planetary Nebulae. Parts I, 1, 1992secg.book.....A
Allen, D. A., Glass, I. S., 1974, MNRAS, 167, 337, 1974MNRAS.167..337A