HD 306070

SUSPECTED MILKY WAY
 
Constellation
Carina
Equatorial coordinates
α = 11 09 35.675
δ = -60 31 49.153
Galactic coordinates
l = 290.7221°
b = -0.0956°

Suspected 1972Ref
Confirmed -
Symbiotic IR type S?Ref
Hot component type -
Outbursts -

Identifiers

HD 306070 IRAS - GSC2.4.2 S4A0001271 AAVSO 000-BCZ-943
SIMBAD HD 306070A Pan-STARRS - SAO - VSX 235411
GAIA DR3 5337690458216835072 SkyMapper 110935.68-603149.1 WRAY 15-760 GCVS -
2MASS J11093567-6031490 HIP - Hen - BD -
WISE J110935.79-603150.2 TYC 8959-474-1 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 (°) 167.3986Ref Parallax (mas) 0.329±0.013Ref Reddening E(B-V) (mag) 1.9±0.21Ref, Note
Declination (°) -60.5303Ref Distance (kpc) 2.95Ref, Note, 2.93Ref, Note    
Galactic longitude (°) 290.7221Ref Proper motion in α (mas/yr) -6.23±0.02Ref    
Galactic latitude (°) -0.0956Ref Proper motion in δ (mas/yr) 1.60±0.01Ref    

Observations

X-Ray - IR type S?Ref Radio -
X-Ray type - J (mag) 8.64Ref Flickering -
GALEX FUV (mag) - H (mag) 7.71Ref Outbursts -
GALEX NUV (mag) - K (mag) 7.45Ref Outburst type -
IUE NoRef WISE W1 (mag) 9.16Ref Jets -
FUSE NoRef WISE W2 (mag) 8.56Ref Resolved nebula -
U (mag) - WISE W3 (mag) 7.39Ref IPmax (eV) -
B (mag) 10.71Ref WISE W4 (mag) 6.18Ref [O III] lines -
V (mag) 10.29Ref IRAS 12μm (Jy) - He II lines -
R (mag) - IRAS 25μm (Jy) - [Fe VII] lines -
I (mag) - IRAS 60μm (Jy) - O VI lines -
BP (mag) 10.53Ref IRAS 100μm (Jy) -
G (mag) 10.34Ref AKARI S09 (Jy) -
RP (mag) 9.96Ref 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 - Mass (M) - Pulsation -
Eff. temperature (K) - Radius (R) - Type -
IR type S?Ref Luminosity (L) - Pulsation period (days) -
Metallicity [Fe/H] -     Pulsation ephemeris -

Hot component

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

Links

SIMBAD   CDS Portal


Notes

Included in the list of symbiotic stars by Swings & Allen (1972), the star exhibits Hα, Hβ, and [O I] in emission, with weak TiO bands. Classified with spectral type B2 in Reed (2003). The system is resolved as a binary in Gaia.


References


Last updated: April 30, 2022