PN K4-39
SUSPECTED
MILKY WAY
Constellation
Vulpecula |
Equatorial coordinates
α = 19 53 05.755
δ = +23 13 35.968 |
Galactic coordinates
l = 60.4926°
b = -2.1525° |
| Suspected |
1974Ref |
| 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 (°) |
298.2740Ref |
Parallax (mas) |
0.202±0.038Ref |
Reddening E(B-V) (mag) |
1.37±0.08Ref, Note |
| Declination (°) |
23.2267Ref |
Distance (kpc) |
3.84Ref, Note, 4.13Ref, Note |
|
|
| Galactic longitude (°) |
60.4926Ref |
Proper motion in α (mas/yr) |
-1.28±0.03Ref |
|
|
| Galactic latitude (°) |
-2.1525Ref |
Proper motion in δ (mas/yr) |
-3.63±0.04Ref |
|
|
Observations
| X-Ray |
- |
IR type |
S?Ref |
Radio |
- |
| X-Ray type |
- |
J (mag) |
9.98Ref |
Flickering |
- |
| GALEX FUV (mag) |
- |
H (mag) |
8.73Ref |
Outbursts |
- |
| GALEX NUV (mag) |
- |
K (mag) |
8.28Ref |
Outburst type |
- |
| IUE |
NoRef |
WISE W1 (mag) |
8.04Ref |
Jets |
- |
| FUSE |
NoRef |
WISE W2 (mag) |
8.19Ref |
Resolved nebula |
- |
| U (mag) |
- |
WISE W3 (mag) |
7.92Ref |
IPmax (eV) |
- |
| B (mag) |
- |
WISE W4 (mag) |
7.87Ref |
[O III] lines |
- |
| V (mag) |
8.83Ref |
IRAS 12μm (Jy) |
- |
He II lines |
- |
| R (mag) |
- |
IRAS 25μm (Jy) |
- |
[Fe VII] lines |
- |
| I (mag) |
- |
IRAS 60μm (Jy) |
- |
O VI lines |
- |
| BP (mag) |
17.45Ref |
IRAS 100μm (Jy) |
- |
|
|
| G (mag) |
14.39Ref |
AKARI S09 (Jy) |
- |
|
|
| RP (mag) |
12.91Ref |
AKARI S18 (Jy) |
- |
|
|
Orbit
| Orbital period (days) |
- |
γ velocity (km/h) |
-36.75±0.81Ref |
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) |
- |
|
|
|
|
Notes
Classified as a compact PN resembling a late-type star (class S) in Allen (1974), with the suggestion that many objects in this class are symbiotics or VV Cep-type stars. Additionally, identified as an M-type star in Acker & Stenholm (1990).
References
- Acker, A., Stenholm, B., 1990, A&AS, 86, 219, 1990A&AS...86..219A
- Allen, D. A., 1974, MNRAS, 168, 1, 1974MNRAS.168....1A
Last updated: April 30, 2022