K 4-13
SUSPECTED
MILKY WAY
Constellation
Aquila |
Equatorial coordinates
α = 19 04 11.210
δ = +10 10 46.524 |
Galactic coordinates
l = 43.4378°
b = 1.8272° |
| Suspected |
2016Ref |
| Confirmed |
- |
| Symbiotic IR type |
S?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 (°) |
286.0467Ref |
Parallax (mas) |
0.205±0.097Ref |
Reddening E(B-V) (mag) |
1.46±0.08Ref, Note |
| Declination (°) |
10.1796Ref |
Distance (kpc) |
4.76Ref, Note, 2.40Ref, Note |
|
|
| Galactic longitude (°) |
43.4378Ref |
Proper motion in α (mas/yr) |
-1.03±0.10Ref |
|
|
| Galactic latitude (°) |
1.8272Ref |
Proper motion in δ (mas/yr) |
-2.89±0.11Ref |
|
|
Observations
| X-Ray |
- |
IR type |
S?Ref |
Radio |
- |
| X-Ray type |
- |
J (mag) |
6.27Ref |
Flickering |
- |
| GALEX FUV (mag) |
- |
H (mag) |
5.11Ref |
Outbursts |
- |
| GALEX NUV (mag) |
- |
K (mag) |
4.52Ref |
Outburst type |
- |
| IUE |
NoRef |
WISE W1 (mag) |
4.19Ref |
Jets |
- |
| FUSE |
NoRef |
WISE W2 (mag) |
3.86Ref |
Resolved nebula |
- |
| U (mag) |
- |
WISE W3 (mag) |
3.30Ref |
IPmax (eV) |
- |
| B (mag) |
- |
WISE W4 (mag) |
2.35Ref |
[O III] lines |
- |
| V (mag) |
- |
IRAS 12μm (Jy) |
1.79Ref |
He II lines |
- |
| R (mag) |
- |
IRAS 25μm (Jy) |
1.08Ref |
[Fe VII] lines |
- |
| I (mag) |
- |
IRAS 60μm (Jy) |
1.51Ref |
O VI lines |
- |
| BP (mag) |
16.03Ref |
IRAS 100μm (Jy) |
12.50Ref |
|
|
| G (mag) |
11.75Ref |
AKARI S09 (Jy) |
1.86Ref |
|
|
| RP (mag) |
10.04Ref |
AKARI S18 (Jy) |
1.12Ref |
|
|
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 |
M4-6Ref |
Mass (M⊙) |
- |
Pulsation |
Yes?Ref |
| Eff. temperature (K) |
- |
Radius (R⊙) |
- |
Type |
SRRef |
| IR type |
S?Ref |
Luminosity (L⊙) |
- |
Pulsation period (days) |
212.2022186Ref |
| 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).
References
- Parker, Q. A., Bojičić, I. S., Frew, D. J., 2016, JPhCS, 728, 3, 032008, 2016JPhCS.728c2008P
Last updated: March 25, 2022