DT Ser

Constellation
Serpens

Equatorial coordinates
α = 18 01 52.276
δ = -01 26 15.689

Galactic coordinates
l = 25.9167°
b = 10.3397°

Suspected	1978^Ref
Re-classified	2014^Ref
Type	foreground F8 III–V + PN^Ref

Identifiers

DT Ser	IRAS 17592-0126	GSC2.4.2 S9HD000022	AAVSO 000-BFL-981
SIMBAD V* DT Ser	Pan-STARRS 106272704678285235	SAO -	VSX 34733
GAIA DR3 4178943599222583808	SkyMapper 180152.27-012615.7	WRAY -	GCVS DT Ser
2MASS J18015228-0126157	HIP -	Hen -	BD -
WISE J180152.28-012615.6	TYC -	ESO -	HD -

Symbiotic Catalogs

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

Position

Right ascension (°)	270.4678^Ref	Parallax (mas)	1.978±0.239^Ref	Reddening E(B-V) (mag)	0.5±0.02^Ref ^{, Note}
Declination (°)	-1.4377^Ref	Distance (kpc)	0.54^Ref ^{, Note}, 0.52^Ref ^{, Note}
Galactic longitude (°)	25.9167^Ref	Proper motion in α (mas/yr)	1.97±0.24^Ref
Galactic latitude (°)	10.3397^Ref	Proper motion in δ (mas/yr)	3.55±0.22^Ref

Links

SIMBAD CDS Portal

Notes

It was reported that DT Ser displays a G-type absorption spectrum with superimposed emission lines, leading to the suggestion that the object is likely a symbiotic system (Bond, 1978). Subsequently, a planetary nebula centered on DT Ser was discovered (Munari et al., 2013). However, a later study argued against a physical connection between the planetary nebula and DT Ser, stating that there is no evidence supporting DT Ser as a dusty post-AGB star (Frew et al., 2014).

References

Bond, H. E., 1978, PASP, 90, 526, 1978PASP...90..526B
Cieslinski, D., Steiner, J. E., Elizalde, F. et al., 1997, A&AS, 124, 57, 1997A&AS..124...57C
Frew, D. J., Bento, J., Bojičić, I. S. et al., 2014, MNRAS, 445, 2, 1605, 2014MNRAS.445.1605F
Munari, U., Corradi, R. L. M., Siviero, A. et al., 2013, A&A, 558, A2, 2013A&A...558A...2M