Hen 2-440

Constellation
Vulpecula

Equatorial coordinates
α = 19 38 08.357
δ = +25 15 40.836

Galactic coordinates
l = 60.5441°
b = 1.8172°

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

Identifiers

Hen 2-440	IRAS 19360+2508	GSC2.4.2 N22R142432	AAVSO -
SIMBAD Hen 2-440	Pan-STARRS 138312945348414194	SAO -	VSX -
GAIA DR3 2021459171418312832	SkyMapper -	WRAY -	GCVS -
2MASS J19380836+2515409	HIP -	Hen 2-440	BD -
WISE -	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 (°)	294.5348^Ref	Parallax (mas)	0.074±0.141^Ref	Reddening E(B-V) (mag)	1.77±0.09^Ref ^{, Note}
Declination (°)	25.2613^Ref	Distance (kpc)	9.02^Ref ^{, Note}, 3.83^Ref ^{, Note}
Galactic longitude (°)	60.5441^Ref	Proper motion in α (mas/yr)	-2.69±0.10^Ref
Galactic latitude (°)	1.8172^Ref	Proper motion in δ (mas/yr)	-6.03±0.15^Ref

Links

SIMBAD CDS Portal

Notes

Initially classified by Allen (1974) as a compact PN resembling a late-type star (his class S), with the assertion that most objects in this class are symbiotics or VV Cep-type stars. Later classifications, such as Acker et al. (1992) and García-Hernández & Górny (2014), suggested a true PN nature.

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., 1974, MNRAS, 168, 1, 1974MNRAS.168....1A
García-Hernández, D. A., Górny, S. K., 2014, A&A, 567, A12, 2014A&A...567A..12G