PTB 28

POSSIBLE MILKY WAY
 
Constellation
Ophiucus
Equatorial coordinates
α = 17 40 21.374
δ = -18 05 11.125
Galactic coordinates
l = 8.6393°
b = 6.6986°

Suspected 2020Ref
Confirmed -
Symbiotic IR type D?Ref
Hot component type shell-burning?Ref
Outbursts -

Identifiers

PTB 28 IRAS 17374-1803 GSC2.4.2 S808048912 AAVSO -
SIMBAD Gaia DR3 4123293609265839488 Pan-STARRS 86292650890586675 SAO - VSX 1541472
GAIA DR3 4123293609265839488 SkyMapper - WRAY - GCVS -
2MASS J17402138-1805110 HIP - Hen - BD -
WISE J174021.37-180511.1 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 (°) 265.0891Ref Parallax (mas) -0.106±0.137Ref Reddening E(B-V) (mag) 0.41±0.01Ref, Note
Declination (°) -18.0864Ref Distance (kpc) 7.49Ref, Note, 9.79Ref, Note    
Galactic longitude (°) 8.6393Ref Proper motion in α (mas/yr) -2.02±0.16Ref    
Galactic latitude (°) 6.6986Ref Proper motion in δ (mas/yr) -7.61±0.10Ref    

Observations

X-Ray - IR type D?Ref Radio -
X-Ray type - J (mag) 9.69Ref Flickering -
GALEX FUV (mag) - H (mag) 7.97Ref Outbursts -
GALEX NUV (mag) - K (mag) 6.75Ref Outburst type -
IUE NoRef WISE W1 (mag) 5.59Ref Jets -
FUSE NoRef WISE W2 (mag) 4.52Ref Resolved nebula -
U (mag) - WISE W3 (mag) 2.52Ref IPmax (eV) 35.1?Ref
B (mag) - WISE W4 (mag) 1.24Ref [O III] lines YesRef
V (mag) - IRAS 12μm (Jy) 4.71Ref He II lines -
R (mag) - IRAS 25μm (Jy) 2.97Ref [Fe VII] lines -
I (mag) - IRAS 60μm (Jy) 0.51Ref O VI lines -
BP (mag) 18.38Ref IRAS 100μm (Jy) 4.32Ref
G (mag) 15.21Ref AKARI S09 (Jy) 4.97Ref
RP (mag) 13.65Ref AKARI S18 (Jy) 3.90Ref

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 YesRef
Eff. temperature (K) - Radius (R) - Type Mira?Ref
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 symbiotic star candidate in the HASH Database of PNe (Parker et al., 2016), it was noted that the spectrum is PN-like, displaying Balmer lines, He I, [O III], [N II], and [S II] lines. However, the object is bright in 2MASS, z, and y PanSTARRS filters. Additionally, it might be a Mira variable according to VSX, and ZTF data supports Mira-like variability.


References

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


Last updated: March 18, 2022