2MASS J05421820-6952493
SUSPECTED
LMC
Constellation
Dorado |
Equatorial coordinates
α = 05 42 18.206
δ = -69 52 49.386 |
Galactic coordinates
l = 280.3327°
b = -31.2727° |
| Suspected |
2015Ref |
| 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) |
LMC SySt-20 (Susp.) |
| Boyarchuk (1969) |
- |
Vaidis (1988, 1991) |
- |
Position
| Right ascension (°) |
85.5759Ref |
Parallax (mas) |
0.021±0.022Ref |
Reddening E(B-V) (mag) |
0.93±0.26Ref, Note |
| Declination (°) |
-69.8804Ref |
Distance (kpc) |
49.97±0.19Ref
13.29Ref, Note, 10.15Ref, Note |
|
|
| Galactic longitude (°) |
280.3327Ref |
Proper motion in α (mas/yr) |
1.66±0.03Ref |
|
|
| Galactic latitude (°) |
-31.2727Ref |
Proper motion in δ (mas/yr) |
0.64±0.03Ref |
|
|
Observations
| X-Ray |
NoRef |
IR type |
D'?Ref |
Radio |
- |
| X-Ray type |
- |
J (mag) |
12.96Ref |
Flickering |
- |
| GALEX FUV (mag) |
- |
H (mag) |
12.17Ref |
Outbursts |
- |
| GALEX NUV (mag) |
- |
K (mag) |
11.93Ref |
Outburst type |
- |
| IUE |
NoRef |
WISE W1 (mag) |
11.12Ref |
Jets |
- |
| FUSE |
NoRef |
WISE W2 (mag) |
10.24Ref |
Resolved nebula |
- |
| U (mag) |
18.71Ref |
WISE W3 (mag) |
7.53Ref |
IPmax (eV) |
- |
| B (mag) |
17.19Ref |
WISE W4 (mag) |
6.21Ref |
[O III] lines |
- |
| V (mag) |
15.64Ref |
IRAS 12μm (Jy) |
- |
He II lines |
- |
| R (mag) |
14.67Ref |
IRAS 25μm (Jy) |
- |
[Fe VII] lines |
- |
| I (mag) |
14.03Ref |
IRAS 60μm (Jy) |
- |
O VI lines |
- |
| BP (mag) |
15.95Ref |
IRAS 100μm (Jy) |
- |
|
|
| G (mag) |
15.12Ref |
AKARI S09 (Jy) |
- |
|
|
| RP (mag) |
14.23Ref |
AKARI S18 (Jy) |
- |
|
|
Orbit
| Orbital period (days) |
- |
γ velocity (km/h) |
260.94±5.93Ref |
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⊙) |
0.6Ref |
Pulsation |
- |
| Eff. temperature (K) |
5060±250Ref |
Radius (R⊙) |
- |
Type |
- |
| IR type |
D'?Ref |
Luminosity (L⊙) |
4625Ref |
Pulsation period (days) |
- |
| Metallicity [Fe/H] |
-0.5Ref |
|
|
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) |
- |
|
|
|
|
References
- Akras, S., Guzman-Ramirez, L., Leal-Ferreira, M. L. et al., 2019, ApJS, 240, 2, 21, 2019ApJS..240...21A
- Kamath, D., Wood, P. R., van Winckel, H., 2015, MNRAS, 454, 2, 1468, 2015MNRAS.454.1468K
Last updated: May 2, 2019