PPA J1808-2437
SUSPECTED
MILKY WAY
Constellation
Sagittarius |
Equatorial coordinates
α = 18 08 45.564
δ = -24 37 18.153 |
Galactic coordinates
l = 6.3229°
b = -2.3027° |
| Suspected |
2004Ref |
| Confirmed |
- |
| Symbiotic IR type |
S?Ref |
| Hot component type |
shell-burning?Ref |
| 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 (°) |
272.1898Ref |
Parallax (mas) |
0.028±0.075Ref |
Reddening E(B-V) (mag) |
1.86±0.04Ref, Note |
| Declination (°) |
-24.6217Ref |
Distance (kpc) |
7.31Ref, Note, 5.61Ref, Note |
|
|
| Galactic longitude (°) |
6.3229Ref |
Proper motion in α (mas/yr) |
-6.76±0.07Ref |
|
|
| Galactic latitude (°) |
-2.3027Ref |
Proper motion in δ (mas/yr) |
-6.53±0.06Ref |
|
|
Observations
| X-Ray |
NoRef |
IR type |
S?Ref |
Radio |
- |
| X-Ray type |
- |
J (mag) |
9.96Ref |
Flickering |
- |
| GALEX FUV (mag) |
- |
H (mag) |
8.61Ref |
Outbursts |
- |
| GALEX NUV (mag) |
- |
K (mag) |
8.07Ref |
Outburst type |
- |
| IUE |
NoRef |
WISE W1 (mag) |
7.70Ref |
Jets |
- |
| FUSE |
NoRef |
WISE W2 (mag) |
7.64Ref |
Resolved nebula |
- |
| U (mag) |
- |
WISE W3 (mag) |
7.12Ref |
IPmax (eV) |
13.6Ref |
| B (mag) |
- |
WISE W4 (mag) |
6.90Ref |
[O III] lines |
NoRef |
| V (mag) |
- |
IRAS 12μm (Jy) |
- |
He II lines |
NoRef |
| R (mag) |
- |
IRAS 25μm (Jy) |
- |
[Fe VII] lines |
NoRef |
| I (mag) |
- |
IRAS 60μm (Jy) |
- |
O VI lines |
NoRef |
| BP (mag) |
18.66Ref |
IRAS 100μm (Jy) |
- |
|
|
| G (mag) |
14.83Ref |
AKARI S09 (Jy) |
- |
|
|
| RP (mag) |
13.27Ref |
AKARI S18 (Jy) |
- |
|
|
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 |
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 |
shell-burning?Ref |
Radius (R⊙) |
- |
Accretion disk |
- |
| Eff. temperature (K) |
- |
Luminosity (L⊙) |
- |
|
|
| Lower limit (K) |
- |
|
|
|
|
| Upper limit (K) |
- |
|
|
|
|
Notes
Symbiotic star candidate in HASH Database of PNe (Parker et al., 2016). Suggested based on infrared colors. The spectrum exhibits a red continuum and Balmer lines in emission.
References
- Parker, Q. A., Bojičić, I. S., Frew, D. J., 2016, JPhCS, 728, 3, 032008, 2016JPhCS.728c2008P
Last updated: March 18, 2022