Sa 2-18

POSSIBLE MILKY WAY
 
Constellation
Puppis
Equatorial coordinates
α = 07 52 57.749
δ = -36 43 54.625
Galactic coordinates
l = 252.0863°
b = -4.7911°

Suspected 2021Ref
Confirmed -
Symbiotic IR type D'?Ref
Hot component type shell-burning?Ref
Outbursts -

Identifiers

Sa 2-18 IRAS 07511-3636 GSC2.4.2 S627006374 AAVSO -
SIMBAD PN Sa 2-18 Pan-STARRS - SAO - VSX -
GAIA DR3 5539301892405179904 SkyMapper 075257.74-364354.6 WRAY - GCVS -
2MASS J07525775-3643546 HIP - Hen - BD -
WISE J075257.74-364354.6 TYC - ESO 369-2 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 (°) 118.2406Ref Parallax (mas) - Reddening E(B-V) (mag) 1.09±0.02Ref, Note
Declination (°) -36.7318Ref Distance (kpc)
-, Note
   
Galactic longitude (°) 252.0863Ref Proper motion in α (mas/yr) -    
Galactic latitude (°) -4.7911Ref Proper motion in δ (mas/yr) -    

Observations

X-Ray - IR type D'?Ref Radio YesRef
X-Ray type - J (mag) 13.66Ref Flickering -
GALEX FUV (mag) - H (mag) 13.21Ref Outbursts -
GALEX NUV (mag) - K (mag) 12.14Ref Outburst type -
IUE NoRef WISE W1 (mag) 10.23Ref Jets -
FUSE NoRef WISE W2 (mag) 8.78Ref Resolved nebula -
U (mag) - WISE W3 (mag) 3.53Ref IPmax (eV) 54.4Ref
B (mag) 17.62Ref WISE W4 (mag) 0.51Ref [O III] lines YesRef
V (mag) 15.89Ref IRAS 12μm (Jy) 1.45Ref He II lines YesRef
R (mag) - IRAS 25μm (Jy) 6.38Ref [Fe VII] lines NoRef
I (mag) - IRAS 60μm (Jy) 3.87Ref O VI lines NoRef
BP (mag) 16.14Ref IRAS 100μm (Jy) 12.70Ref
G (mag) 17.94Ref AKARI S09 (Jy) 0.62Ref
RP (mag) 15.15Ref AKARI S18 (Jy) 3.71Ref

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 D'?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 shell-burning?Ref Radius (R) - Accretion disk -
Eff. temperature (K) - Luminosity (L) -    
Lower limit (K) -        
Upper limit (K) -        

Links

SIMBAD   CDS Portal


Notes

Classified as a likely symbiotic system in HASH Database of PNe (Parker et al., 2016). The spectrum shows numerous emission lines, including Balmer lines, He I, He II, [O III], etc.


References

  • Parker, Q. A., Bojičić, I. S., Frew, D. J., 2016, JPhCS, 728, 3, 032008, 2016JPhCS.728c2008P


Last updated: March 18, 2022