V723 Sco

Constellation
Scorpius

Equatorial coordinates
α = 17 50 05.310
δ = -35 23 57.109

Galactic coordinates
l = 354.9463°
b = -4.1433°

Suspected	1992^Ref
Re-classified	2013^Ref
Type	CV?^Ref

Identifiers

V723 Sco	IRAS -	GSC2.4.2 S8BI189249	AAVSO 000-BBZ-439
SIMBAD V* V723 Sco	Pan-STARRS -	SAO -	VSX 33539
GAIA DR3 4040677984976915200	SkyMapper -	WRAY -	GCVS V0723 Sco
2MASS -	HIP -	Hen -	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 (°)	267.5221^Ref	Parallax (mas)	0.447±0.180^Ref	Reddening E(B-V) (mag)	0.61±0.05^Ref ^{, Note}
Declination (°)	-35.3992^Ref	Distance (kpc)	4.38^Ref ^{, Note}, 7.07^Ref ^{, Note}
Galactic longitude (°)	354.9463^Ref	Proper motion in α (mas/yr)	-6.87±0.21^Ref
Galactic latitude (°)	-4.1433^Ref	Proper motion in δ (mas/yr)	-6.68±0.14^Ref

Links

SIMBAD CDS Portal

Notes

Harrison (1992) proposed that V723 Sco (Nova Sco 1952 b) shares characteristics with the RS Oph group of recurrent novae, drawing on the shape of its light curve. Notably, it was not detected in WISE data (Evans et al., 2014). The nature of the donor star has been debated, with Saito et al. (2013) classifying it as a main-sequence star, Pagnotta & Schaefer (2014) suggesting a giant companion based on infrared colors, and Mróz et al. (2015) identifying the donor as a red giant through its position on the color-magnitude diagram.

References

De Vaucouleurs, G., 1960, ApJ, 132, 681, 1960ApJ...132..681D
Evans, A., Gehrz, R. D., Woodward, C. E. et al., 2014, MNRAS, 444, 2, 1683, 2014MNRAS.444.1683E
Harrison, T. E., 1992, MNRAS, 259, 17P, 1992MNRAS.259P..17H
Mróz, P., Udalski, A., Poleski, R. et al., 2015, ApJS, 219, 2, 26, 2015ApJS..219...26M
Pagnotta, A., Schaefer, B. E., 2014, ApJ, 788, 2, 164, 2014ApJ...788..164P
Saito, R. K., Minniti, D., Angeloni, R. et al., 2013, A&A, 554, A123, 2013A&A...554A.123S