Gaia DR3 1861604306903914112
SUSPECTED
MILKY WAY
Constellation
Cygnus |
Equatorial coordinates
α = 20 21 46.305
δ = +30 56 09.029 |
Galactic coordinates
l = 70.4329°
b = -3.3680° |
| Suspected |
2022Ref |
| Confirmed |
- |
| Symbiotic IR type |
- |
| 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 (°) |
305.4429Ref |
Parallax (mas) |
0.101±0.036Ref |
Reddening E(B-V) (mag) |
0.83±0.03Ref, Note |
| Declination (°) |
30.9358Ref |
Distance (kpc) |
5.68Ref, Note, 6.14Ref, Note |
|
|
| Galactic longitude (°) |
70.4329Ref |
Proper motion in α (mas/yr) |
-2.57±0.03Ref |
|
|
| Galactic latitude (°) |
-3.3680Ref |
Proper motion in δ (mas/yr) |
-3.64±0.03Ref |
|
|
Observations
| X-Ray |
NoRef |
IR type |
- |
Radio |
- |
| X-Ray type |
- |
J (mag) |
10.40Ref |
Flickering |
- |
| GALEX FUV (mag) |
- |
H (mag) |
9.31Ref |
Outbursts |
- |
| GALEX NUV (mag) |
- |
K (mag) |
8.89Ref |
Outburst type |
- |
| IUE |
NoRef |
WISE W1 (mag) |
8.79Ref |
Jets |
- |
| FUSE |
NoRef |
WISE W2 (mag) |
8.88Ref |
Resolved nebula |
- |
| U (mag) |
- |
WISE W3 (mag) |
8.50Ref |
IPmax (eV) |
- |
| B (mag) |
- |
WISE W4 (mag) |
8.35Ref |
[O III] lines |
- |
| V (mag) |
- |
IRAS 12μm (Jy) |
- |
He II lines |
- |
| R (mag) |
- |
IRAS 25μm (Jy) |
- |
[Fe VII] lines |
- |
| I (mag) |
- |
IRAS 60μm (Jy) |
- |
O VI lines |
- |
| BP (mag) |
17.05Ref |
IRAS 100μm (Jy) |
- |
|
|
| G (mag) |
14.49Ref |
AKARI S09 (Jy) |
- |
|
|
| RP (mag) |
13.07Ref |
AKARI S18 (Jy) |
- |
|
|
Orbit
| Orbital period (days) |
- |
γ velocity (km/h) |
-197.23±1.49Ref |
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 |
M?Ref |
Mass (M⊙) |
- |
Pulsation |
Yes?Ref |
| Eff. temperature (K) |
- |
Radius (R⊙) |
- |
Type |
SRRef |
| IR type |
- |
Luminosity (L⊙) |
- |
Pulsation period (days) |
60.8822154Ref |
| 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 by Rimoldini et al. (2023) based on a machine-learning technique applied to Gaia DR3 data, including astrometric, photometric, and photometric time series information. Periodicity of 60.88 days was reported by Chen et al. (2020).
References
- Chen, X., Wang, S., Deng, L. et al., 2020, ApJS, 249, 1, 18, 2020ApJS..249...18C
- Rimoldini, L., Holl, B., Gavras, P. et al., 2023, A&A, 674, A14, 2023A&A...674A..14R
Last updated: January 16, 2023