NGC 185 SySt-1
CONFIRMED
NGC 185
Constellation
Cassiopeia |
Equatorial coordinates
α = 00 38 59.942
δ = +48 19 26.239 |
Galactic coordinates
l = 120.7968°
b = -14.4962° |
| Suspected |
2021Ref |
| Confirmed |
2012Ref |
| Symbiotic IR type |
SRef |
| Hot component type |
shell-burningRef |
| Outbursts |
- |
|
|
Symbiotic Catalogs
| Bidelman (1954) |
- |
Allen (1984) |
- |
Belzcyński et al. (2001) |
- |
| Gaposchkin (1957) |
- |
Kenyon (1986) |
- |
Akras et al. (2019) |
NGC185 SySt-1 (Conf.) |
| Boyarchuk (1969) |
- |
Vaidis (1988, 1991) |
- |
Position
| Right ascension (°) |
9.7498Ref |
Parallax (mas) |
- |
Reddening E(B-V) (mag) |
0.15±0.01Ref, Note |
| Declination (°) |
48.3240Ref |
Distance (kpc) |
630±40Ref
-, Note |
|
|
| Galactic longitude (°) |
120.7968Ref |
Proper motion in α (mas/yr) |
- |
|
|
| Galactic latitude (°) |
-14.4962Ref |
Proper motion in δ (mas/yr) |
- |
|
|
Observations
| X-Ray |
NoRef |
IR type |
SRef |
Radio |
- |
| X-Ray type |
- |
J (mag) |
- |
Flickering |
- |
| GALEX FUV (mag) |
- |
H (mag) |
- |
Outbursts |
- |
| GALEX NUV (mag) |
- |
K (mag) |
- |
Outburst type |
- |
| IUE |
NoRef |
WISE W1 (mag) |
13.47Ref |
Jets |
- |
| FUSE |
NoRef |
WISE W2 (mag) |
13.45Ref |
Resolved nebula |
- |
| U (mag) |
- |
WISE W3 (mag) |
12.68Ref |
IPmax (eV) |
114Ref |
| B (mag) |
- |
WISE W4 (mag) |
9.28Ref |
[O III] lines |
NoRef |
| V (mag) |
- |
IRAS 12μm (Jy) |
0.29Ref |
He II lines |
YesRef |
| R (mag) |
- |
IRAS 25μm (Jy) |
0.25Ref |
[Fe VII] lines |
NoRef |
| I (mag) |
- |
IRAS 60μm (Jy) |
0.44Ref |
O VI lines |
YesRef |
| BP (mag) |
21.06Ref |
IRAS 100μm (Jy) |
2.19Ref |
|
|
| G (mag) |
21.09Ref |
AKARI S09 (Jy) |
- |
|
|
| RP (mag) |
19.55Ref |
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 |
SRef |
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-burningRef |
Radius (R⊙) |
- |
Accretion disk |
- |
| Eff. temperature (K) |
82800Ref |
Luminosity (L⊙) |
- |
|
|
| Lower limit (K) |
- |
|
|
|
|
| Upper limit (K) |
- |
|
|
|
|
Notes
NGC 185 SySt-1 possesses a broad emission feature at 6830 Å and does not show forbidden lines in its spectrum. An S-type symbiotic class is suggested for this star (Gonçalves et al., 2012).
References
- Gonçalves, D. R., Magrini, L., Martins, L. P. et al., 2012, MNRAS, 419, 1, 854, 2012MNRAS.419..854G
Last updated: January 13, 2019