Pt 1

CONFIRMED MILKY WAY
 
Constellation
Ophiucus
Equatorial coordinates
α = 17 38 49.546
δ = -23 54 04.148
Galactic coordinates
l = 3.4833°
b = 3.9422°

Suspected 1980Ref
Confirmed 1980Ref
Symbiotic IR type SRef
Hot component type shell-burningRef
Outbursts -

Identifiers

Pt 1 IRAS - GSC2.4.2 S8CK027594 AAVSO -
SIMBAD ESO 520-12 Pan-STARRS 79312647064348091 SAO - VSX -
GAIA DR3 4116352873442484096 SkyMapper 173849.53-235406.6 WRAY - GCVS -
2MASS J17384954-2354066 HIP - Hen - BD -
WISE J173849.54-235406.6 TYC - ESO - HD -

Symbiotic Catalogs

Bidelman (1954) - Allen (1984) Pt-1 (Conf.) Belzcyński et al. (2001) Pt 1 (Conf.)
Gaposchkin (1957) - Kenyon (1986) Pt-1 (Conf.) Akras et al. (2019) PN Pt 1 (Conf.)
Boyarchuk (1969) - Vaidis (1988, 1991) NSV 9354 (Conf.)

Position

Right ascension (°) 264.7064Ref Parallax (mas) 0.103±0.022Ref Reddening E(B-V) (mag) 0.83±0.01Ref, Note
Declination (°) -23.9019Ref Distance (kpc) 2.7Ref
6.44Ref, Note, 5.66Ref, Note
   
Galactic longitude (°) 3.4833Ref Proper motion in α (mas/yr) -0.16±0.03Ref    
Galactic latitude (°) 3.9422Ref Proper motion in δ (mas/yr) -10.19±0.01Ref    

Observations

X-Ray NoRef IR type SRef Radio NoRef
X-Ray type - J (mag) 10.09Ref Flickering -
GALEX FUV (mag) - H (mag) 8.91Ref Outbursts -
GALEX NUV (mag) - K (mag) 8.49Ref Outburst type -
IUE NoRef WISE W1 (mag) 8.24Ref Jets -
FUSE NoRef WISE W2 (mag) 8.21Ref Resolved nebula -
U (mag) - WISE W3 (mag) 7.86Ref IPmax (eV) 114Ref
B (mag) 17.27Ref WISE W4 (mag) 7.16Ref [O III] lines No?Ref
V (mag) 15.46Ref IRAS 12μm (Jy) - He II lines YesRef
R (mag) - IRAS 25μm (Jy) - [Fe VII] lines NoRef
I (mag) - IRAS 60μm (Jy) - O VI lines YesRef
BP (mag) 15.71Ref IRAS 100μm (Jy) -
G (mag) 13.83Ref AKARI S09 (Jy) -
RP (mag) 12.54Ref AKARI S18 (Jy) -

Orbit

Orbital period (days) - γ velocity (km/h) -350.00±10.00Ref 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 M1Ref, M0 IIIRef,
M3 IIIRef
Mass (M) - Pulsation -
Eff. temperature (K) - Radius (R) - Type -
IR type SRef Luminosity (L) - Pulsation period (days) -
Metallicity [Fe/H] -     Pulsation ephemeris -

Hot component

Type/Spectral type - Mass (M) - Spin period (min) -
Shell-burning/Accreting-only shell-burningRef Radius (R) 0.15Ref Accretion disk -
Eff. temperature (K) 125000Ref Luminosity (L) -    
Lower limit (K) -        
Upper limit (K) -        

Links

SIMBAD   CDS Portal


Notes

In Peterson (1977), the star was associated with the globular cluster NGC 6401. However, this association was later rejected by Munari et al. (1994), who argued that the symbiotic star is a halo object.


References


Last updated: December 1, 2021