SS73 22

Constellation
Carina

Equatorial coordinates
α = 10 21 33.834
δ = -58 05 46.220

Galactic coordinates
l = 284.1766°
b = -0.7899°

Suspected	1973^Ref
Re-classified	2015^Ref
Type	Post-AGB star^Ref

Identifiers

SS73 22	IRAS 10197-5750	GSC2.4.2 S47O000556	AAVSO -
SIMBAD MR 22	Pan-STARRS -	SAO -	VSX 431861
GAIA DR3 5255657029503679360	SkyMapper 102133.84-580547.9	WRAY 15-549	GCVS -
2MASS J10213385-5805476	HIP -	Hen 3-404	BD -
WISE J102133.84-580547.4	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)	VDS 24 (Conf.)

Position

Right ascension (°)	155.3910^Ref	Parallax (mas)	-	Reddening E(B-V) (mag)	3.12±0.91^Ref ^{, Note}
Declination (°)	-58.0962^Ref	Distance (kpc)	-^{, Note}
Galactic longitude (°)	284.1766^Ref	Proper motion in α (mas/yr)	-
Galactic latitude (°)	-0.7899^Ref	Proper motion in δ (mas/yr)	-

Links

SIMBAD CDS Portal

Notes

Classified as a symbiotic star by Sanduleak & Stephenson (1973), who suspected He II emission in addition to Hα and Hβ lines. However, Allen et al. (1980) detected only Balmer lines in emission and suspected a pre-main-sequence object. The star is listed among confirmed symbiotic stars by Vaidis (1988). Additionally, it is included in the lists of both pre-planetary nebulae (Kohoutek, 2001) and planetary nebulae (Frew et al., 2013). The object is also classified as a likely post-AGB star (Vickers et al., 2015).

References

Allen, D. A., Hyland, A. R., Caswell, J. L., 1980, MNRAS, 192, 505, 1980MNRAS.192..505A
Frew, D. J., Bojičić, I. S., Parker, Q. A., 2013, MNRAS, 431, 1, 2, 2013MNRAS.431....2F
Kohoutek, L., 2001, A&A, 378, 843, 2001A&A...378..843K
Sanduleak, N., Stephenson, C. B., 1973, ApJ, 185, 899, 1973ApJ...185..899S
Vaidis, J.-P., 1988, BAFOE, 45, 13, 1988BAFOE..45...13V
Vickers, S. B., Frew, D. J., Parker, Q. A. et al., 2015, MNRAS, 447, 2, 1673, 2015MNRAS.447.1673V