SUSPECTED
MILKY WAY
|
| Gaia DR3 2178988199495779456 | IRAS - | GSC2.4.2 N1AH000037 | AAVSO 000-BLS-044 |
| SIMBAD 2MASS J21180196+5721343 | Pan-STARRS 176833195079722169 | SAO - | VSX 409980 |
| GAIA DR3 2178988199495779456 | SkyMapper - | WRAY - | GCVS - |
| 2MASS J21180196+5721343 | HIP - | Hen - | BD - |
| WISE J211801.94+572134.4 | TYC - | ESO - | HD - |
| Bidelman (1954) | - | Allen (1984) | - | Belzcyński et al. (2001) | - |
| Gaposchkin (1957) | - | Kenyon (1986) | - | Akras et al. (2019) | - |
| Boyarchuk (1969) | - | Vaidis (1988, 1991) | - |
| Right ascension (°) | 319.5081Ref | Parallax (mas) | 0.119±0.020Ref | Reddening E(B-V) (mag) | 0.96±0.03Ref, Note |
| Declination (°) | 57.3596Ref | Distance (kpc) | 7.26Ref, Note, 6.09Ref, Note | ||
| Galactic longitude (°) | 97.1589Ref | Proper motion in α (mas/yr) | -5.60±0.03Ref | ||
| Galactic latitude (°) | 5.5917Ref | Proper motion in δ (mas/yr) | -3.17±0.03Ref |
| X-Ray | - | IR type | - | Radio | - |
| X-Ray type | - | J (mag) | 9.21Ref | Flickering | - |
| GALEX FUV (mag) | - | H (mag) | 8.08Ref | Outbursts | - |
| GALEX NUV (mag) | - | K (mag) | 7.66Ref | Outburst type | - |
| IUE | NoRef | WISE W1 (mag) | 7.35Ref | Jets | - |
| FUSE | NoRef | WISE W2 (mag) | 7.49Ref | Resolved nebula | - |
| U (mag) | - | WISE W3 (mag) | 7.15Ref | IPmax (eV) | - |
| B (mag) | 16.45Ref | WISE W4 (mag) | 6.66Ref | [O III] lines | - |
| V (mag) | 14.32Ref | IRAS 12μm (Jy) | - | He II lines | - |
| R (mag) | - | IRAS 25μm (Jy) | - | [Fe VII] lines | - |
| I (mag) | - | IRAS 60μm (Jy) | - | O VI lines | - |
| BP (mag) | 14.59Ref | IRAS 100μm (Jy) | - | ||
| G (mag) | 12.78Ref | AKARI S09 (Jy) | 0.07Ref | ||
| RP (mag) | 11.51Ref | AKARI S18 (Jy) | - |
| Orbital period (days) | 753.92±26.14Ref | γ velocity (km/h) | -102.12±1.85Ref | Size of giant’s orbit (AU) | - |
| Eccentricity | 0.28±0.1Ref | RV of giant (km/h) | - | Separation (AU) | - |
| Inclination (°) | - | Inferior conj. of giant (JD) | - | Mass function | - |
| Eclipses | - | Mass ratio | - | ||
| Orbital ephemeris | - |
| Spectral type | M?Ref | Mass (M⊙) | - | Pulsation | Yes?Ref |
| Eff. temperature (K) | - | Radius (R⊙) | - | Type | SRRef |
| IR type | - | Luminosity (L⊙) | - | Pulsation period (days) | 256.2190142Ref |
| Metallicity [Fe/H] | - | Pulsation ephemeris | - |
| 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) | - |
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. It is listed in the catalog of Hα emission stars by Kohoutek & Wehmeyer (1999). Periodicities of 256.22 days and 753.9 days have been reported by Chen et al. (2020) and Beck et al. (2023), respectively.