SUSPECTED
MILKY WAY
|
| Hen 2-25 | IRAS 09164-5426 | GSC2.4.2 S476000008 | AAVSO - |
| SIMBAD WRAY 16-40 | Pan-STARRS - | SAO - | VSX - |
| GAIA DR3 5310613021532357632 | SkyMapper 091801.32-543929.1 | WRAY 16-40 | GCVS - |
| 2MASS J09180132-5439291 | HIP - | Hen 2-25 | BD - |
| WISE J091801.31-543929.2 | TYC - | ESO 166-7 | HD - |
| Bidelman (1954) | - | Allen (1984) | - | Belzcyński et al. (2001) | - |
| Gaposchkin (1957) | - | Kenyon (1986) | - | Akras et al. (2019) | Hen 2-25 (Susp.) |
| Boyarchuk (1969) | - | Vaidis (1988, 1991) | - |
| Right ascension (°) | 139.5055Ref | Parallax (mas) | 0.048±0.058Ref | Reddening E(B-V) (mag) | 0.55±0.03Ref, Note |
| Declination (°) | -54.6581Ref | Distance (kpc) | 9.30Ref, Note, 5.53Ref, Note | ||
| Galactic longitude (°) | 275.2159Ref | Proper motion in α (mas/yr) | -2.57±0.06Ref | ||
| Galactic latitude (°) | -3.7081Ref | Proper motion in δ (mas/yr) | 2.54±0.06Ref |
| X-Ray | NoRef | IR type | D?Ref | Radio | NoRef |
| X-Ray type | - | J (mag) | 13.41Ref | Flickering | - |
| GALEX FUV (mag) | - | H (mag) | 12.12Ref | Outbursts | - |
| GALEX NUV (mag) | - | K (mag) | 10.41Ref | Outburst type | - |
| IUE | NoRef | WISE W1 (mag) | 8.20Ref | Jets | - |
| FUSE | NoRef | WISE W2 (mag) | 6.58Ref | Resolved nebula | - |
| U (mag) | - | WISE W3 (mag) | 2.81Ref | IPmax (eV) | 40.7Ref |
| B (mag) | 15.63Ref | WISE W4 (mag) | 0.64Ref | [O III] lines | YesRef |
| V (mag) | 14.91Ref | IRAS 12μm (Jy) | 2.96Ref | He II lines | NoRef |
| R (mag) | - | IRAS 25μm (Jy) | 5.43Ref | [Fe VII] lines | NoRef |
| I (mag) | - | IRAS 60μm (Jy) | 2.30Ref | O VI lines | NoRef |
| BP (mag) | 14.86Ref | IRAS 100μm (Jy) | 3.07Ref | ||
| G (mag) | 14.67Ref | AKARI S09 (Jy) | 1.78Ref | ||
| RP (mag) | 14.05Ref | AKARI S18 (Jy) | 3.83Ref |
| 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 | - |
| Spectral type | - | Mass (M⊙) | - | Pulsation | - |
| Eff. temperature (K) | - | Radius (R⊙) | - | Type | - |
| IR type | D?Ref | Luminosity (L⊙) | - | Pulsation period (days) | - |
| 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) | - |
Previously designated as a PN, the potential symbiotic nature of the core was proposed by Corradi (1995). However, the central star has not been detected in the spectra.