CONFIRMED
MILKY WAY
|
| K 3-9 | IRAS 18376-0846 | GSC2.4.2 S9N3056908 | AAVSO 000-BJV-028 |
| SIMBAD PN K 3-9 | Pan-STARRS 97522801007334938 | SAO - | VSX 62974 |
| GAIA DR3 4155672680486693120 | SkyMapper 184024.18-084346.4 | WRAY - | GCVS - |
| 2MASS J18402417-0843463 | HIP - | Hen - | BD - |
| WISE J184024.12-084347.4 | TYC - | ESO - | HD - |
| Bidelman (1954) | - | Allen (1984) | - | Belzcyński et al. (2001) | K 3-9 (Conf.) |
| Gaposchkin (1957) | - | Kenyon (1986) | - | Akras et al. (2019) | K 3-9 (Conf.) |
| Boyarchuk (1969) | - | Vaidis (1988, 1991) | K-3-9 (Susp.) |
| Right ascension (°) | 280.1008Ref | Parallax (mas) | 0.340±0.081Ref | Reddening E(B-V) (mag) | 2.11±0.2Ref, Note |
| Declination (°) | -8.7295Ref | Distance (kpc) | 3.6Ref 2.65Ref, Note, 2.61Ref, Note |
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| Galactic longitude (°) | 23.9094Ref | Proper motion in α (mas/yr) | -0.18±0.10Ref | ||
| Galactic latitude (°) | -1.5395Ref | Proper motion in δ (mas/yr) | -2.35±0.09Ref |
| X-Ray | NoRef | IR type | DRef | Radio | YesRef |
| X-Ray type | - | J (mag) | 8.19Ref | Flickering | - |
| GALEX FUV (mag) | - | H (mag) | 6.62Ref | Outbursts | - |
| GALEX NUV (mag) | - | K (mag) | 5.55Ref | Outburst type | - |
| IUE | NoRef | WISE W1 (mag) | 4.53Ref | Jets | - |
| FUSE | NoRef | WISE W2 (mag) | 2.23Ref | Resolved nebula | - |
| U (mag) | - | WISE W3 (mag) | 1.70Ref | IPmax (eV) | 114Ref |
| B (mag) | - | WISE W4 (mag) | 1.01Ref | [O III] lines | YesRef |
| V (mag) | - | IRAS 12μm (Jy) | 8.09Ref | He II lines | YesRef |
| R (mag) | - | IRAS 25μm (Jy) | 4.08Ref | [Fe VII] lines | YesRef |
| I (mag) | 12.47Ref | IRAS 60μm (Jy) | 25.40Ref | O VI lines | YesRef |
| BP (mag) | 16.57Ref | IRAS 100μm (Jy) | 245.00Ref | ||
| G (mag) | 15.30Ref | AKARI S09 (Jy) | 6.93Ref | ||
| RP (mag) | 13.97Ref | AKARI S18 (Jy) | 3.81Ref |
| 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 | M3Ref | Mass (M⊙) | - | Pulsation | - |
| Eff. temperature (K) | - | Radius (R⊙) | - | Type | - |
| IR type | DRef | Luminosity (L⊙) | - | Pulsation period (days) | - |
| Metallicity [Fe/H] | - | Pulsation ephemeris | - |
| Type/Spectral type | WDRef | Mass (M⊙) | - | Spin period (min) | - |
| Shell-burning/Accreting-only | shell-burningRef | Radius (R⊙) | - | Accretion disk | - |
| Eff. temperature (K) | - | Luminosity (L⊙) | 14000Ref | ||
| Lower limit (K) | 114000Ref | ||||
| Upper limit (K) | - |
Stenholm & Acker (1987) detected emission lines of He I, He II, [Fe VII], and O VI. Later, in Acker et al. (1988), the target was classified as a symbiotic star based on the detection of O VI lines. Subsequently, Ivison & Seaquist (1995) classified the target as a symbiotic Mira. However, this classification was disputed by Munari & Jurdana-Šepić (2002).