Sab 15
POSSIBLE
MILKY WAY
Constellation
Ophiucus |
Equatorial coordinates
α = 17 42 25.648
δ = -20 26 39.212 |
Galactic coordinates
l = 6.8730°
b = 5.0519° |
| Suspected |
2016Ref |
| Confirmed |
- |
| Symbiotic IR type |
D'?Ref |
| Hot component type |
- |
| Outbursts |
- |
|
|
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 (°) |
265.6069Ref |
Parallax (mas) |
0.670±0.645Ref |
Reddening E(B-V) (mag) |
0.8±0.01Ref, Note |
| Declination (°) |
-20.4442Ref |
Distance (kpc) |
5.52Ref, Note
-, Note |
|
|
| Galactic longitude (°) |
6.8730Ref |
Proper motion in α (mas/yr) |
-3.92±0.62Ref |
|
|
| Galactic latitude (°) |
5.0519Ref |
Proper motion in δ (mas/yr) |
-6.31±0.43Ref |
|
|
Observations
| X-Ray |
- |
IR type |
D'?Ref |
Radio |
- |
| X-Ray type |
- |
J (mag) |
15.33Ref |
Flickering |
- |
| GALEX FUV (mag) |
- |
H (mag) |
13.35Ref |
Outbursts |
- |
| GALEX NUV (mag) |
- |
K (mag) |
11.04Ref |
Outburst type |
- |
| IUE |
NoRef |
WISE W1 (mag) |
8.14Ref |
Jets |
- |
| FUSE |
NoRef |
WISE W2 (mag) |
6.43Ref |
Resolved nebula |
YesRef |
| U (mag) |
- |
WISE W3 (mag) |
3.61Ref |
IPmax (eV) |
14.5Ref |
| B (mag) |
- |
WISE W4 (mag) |
1.52Ref |
[O III] lines |
NoRef |
| V (mag) |
- |
IRAS 12μm (Jy) |
13.20Ref |
He II lines |
NoRef |
| R (mag) |
- |
IRAS 25μm (Jy) |
6.07Ref |
[Fe VII] lines |
NoRef |
| I (mag) |
- |
IRAS 60μm (Jy) |
3.13Ref |
O VI lines |
NoRef |
| BP (mag) |
- |
IRAS 100μm (Jy) |
6.49Ref |
|
|
| G (mag) |
19.20Ref |
AKARI S09 (Jy) |
0.97Ref |
|
|
| RP (mag) |
- |
AKARI S18 (Jy) |
1.72Ref |
|
|
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 |
- |
Radius (R⊙) |
- |
Accretion disk |
- |
| Eff. temperature (K) |
- |
Luminosity (L⊙) |
- |
|
|
| Lower limit (K) |
- |
|
|
|
|
| Upper limit (K) |
- |
|
|
|
|
Notes
Classified as a symbiotic star candidate in the HASH Database of PNe (Parker et al., 2016), this star exhibits bipolar outflows.
References
- Parker, Q. A., Bojičić, I. S., Frew, D. J., 2016, JPhCS, 728, 3, 032008, 2016JPhCS.728c2008P
Last updated: March 25, 2022