SSTGC 494464

SUSPECTED MILKY WAY
 
Constellation
Sagittarius
Equatorial coordinates
α = 17 45 28.775
δ = -29 09 42.700
Galactic coordinates
l = 359.7914°
b = -0.0914°

Suspected 2013Ref
Confirmed -
Symbiotic IR type D?Ref
Hot component type accreting-only?Ref
Outbursts -

Identifiers

SSTGC 494464 IRAS - GSC2.4.2 S8DM126189 AAVSO -
SIMBAD CXOGC J174528.7-290942 Pan-STARRS - SAO - VSX -
GAIA DR3 - SkyMapper - WRAY - GCVS -
2MASS J17452879-2909426 HIP - Hen - BD -
WISE J174528.77-290943.0 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 (°) 266.3699Ref Parallax (mas) - Reddening E(B-V) (mag) 72.29±8.83Ref, Note
Declination (°) -29.1618Ref Distance (kpc)
-, Note
   
Galactic longitude (°) 359.7914Ref Proper motion in α (mas/yr) -    
Galactic latitude (°) -0.0914Ref Proper motion in δ (mas/yr) -    

Observations

X-Ray YesRef IR type D?Ref Radio -
X-Ray type γ or δ?Ref J (mag) 15.28Ref Flickering -
GALEX FUV (mag) - H (mag) 12.78Ref Outbursts -
GALEX NUV (mag) - K (mag) 9.89Ref Outburst type -
IUE NoRef WISE W1 (mag) 8.86Ref Jets -
FUSE NoRef WISE W2 (mag) 7.83Ref Resolved nebula -
U (mag) - WISE W3 (mag) 6.88Ref IPmax (eV) 13.6?Ref
B (mag) - WISE W4 (mag) 3.36Ref [O III] lines -
V (mag) - IRAS 12μm (Jy) - He II lines -
R (mag) - IRAS 25μm (Jy) - [Fe VII] lines -
I (mag) - IRAS 60μm (Jy) - O VI lines -
BP (mag) - IRAS 100μm (Jy) -
G (mag) - AKARI S09 (Jy) -
RP (mag) - AKARI S18 (Jy) -

Orbit

Orbital period (days) - γ velocity (km/h) - Size of giant’s orbit (AU) -
Eccentricity - RV of giant (km/h) - Separation (AU) -
Inclination (°) - Inferior conj. of giant (JD) - Mass function -
Eclipses -     Mass ratio -
Orbital ephemeris -        

Cool component

Spectral type M7Ref Mass (M) - Pulsation -
Eff. temperature (K) - Radius (R) - Type -
IR type D?Ref Luminosity (L) - Pulsation period (days) -
Metallicity [Fe/H] -     Pulsation ephemeris -

Hot component

Type/Spectral type NS or WD?Ref Mass (M) - Spin period (min) -
Shell-burning/Accreting-only accreting-only?Ref Radius (R) - Accretion disk -
Eff. temperature (K) - Luminosity (L) -    
Lower limit (K) -        
Upper limit (K) -        

Links

SIMBAD   CDS Portal


Notes

Detected as a variable X-ray source, the optical counterpart of this object may be an M7 giant or supergiant (Dewitt et al., 2013). It is likely a long-period variable. In Gottlieb et al. (2020), rapid IR variability was also observed. The authors suggested that this source might be a supergiant fast X-ray transient, the first discovered with a red supergiant.


References

  • Dewitt, C., Bandyopadhyay, R. M., Eikenberry, S. S. et al., 2013, AJ, 146, 5, 109, 2013AJ....146..109D
  • Gottlieb, A. M., Eikenberry, S. S., Ackley, K. et al., 2020, ApJ, 896, 1, 32, 2020ApJ...896...32G


Last updated: January 23, 2023