CONFIRMED
MILKY WAY
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| KX TrA | IRAS 16401-6231 | GSC2.4.2 S7FX000676 | AAVSO 000-BCX-378 |
| SIMBAD V* KX TrA | Pan-STARRS - | SAO - | VSX 36921 |
| GAIA DR3 5818044445302448000 | SkyMapper 164435.46-623714.0 | WRAY 16-233 | GCVS KX TrA |
| 2MASS J16443546-6237140 | HIP - | Hen 2-177 | BD - |
| WISE J164435.49-623714.3 | TYC - | ESO 101-10 | HD - |
| Bidelman (1954) | - | Allen (1984) | Hen 1242 (Conf.) | Belzcyński et al. (2001) | KX TrA (Conf.) |
| Gaposchkin (1957) | - | Kenyon (1986) | KX TrA (Conf.) | Akras et al. (2019) | KX TrA (Conf.) |
| Boyarchuk (1969) | HZ 177 (Conf.) | Vaidis (1988, 1991) | KX TrA (Conf.) |
| Right ascension (°) | 251.1478Ref | Parallax (mas) | 0.226±0.029Ref | Reddening E(B-V) (mag) | 0.17±0.01Ref, Note |
| Declination (°) | -62.6206Ref | Distance (kpc) | 5Ref, 3Ref, 1.2Ref 4.12Ref, Note, 3.89Ref, Note |
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| Galactic longitude (°) | 326.4140Ref | Proper motion in α (mas/yr) | -1.85±0.02Ref | ||
| Galactic latitude (°) | -10.9390Ref | Proper motion in δ (mas/yr) | -7.02±0.02Ref |
| X-Ray | NoRef | IR type | SRef | Radio | NoRef |
| X-Ray type | - | J (mag) | 7.33Ref | Flickering | YesRef |
| GALEX FUV (mag) | - | H (mag) | 6.41Ref | Outbursts | YesRef |
| GALEX NUV (mag) | - | K (mag) | 5.98Ref | Outburst type | - |
| IUE | YesRef | WISE W1 (mag) | 5.86Ref | Jets | - |
| FUSE | YesRef | WISE W2 (mag) | 5.57Ref | Resolved nebula | NoRef |
| U (mag) | - | WISE W3 (mag) | 5.22Ref | IPmax (eV) | 114Ref |
| B (mag) | 11.91Ref | WISE W4 (mag) | 4.72Ref | [O III] lines | YesRef |
| V (mag) | 11.38Ref | IRAS 12μm (Jy) | 0.26Ref | He II lines | YesRef |
| R (mag) | 12.33Ref | IRAS 25μm (Jy) | 0.25Ref | [Fe VII] lines | NoRef |
| I (mag) | - | IRAS 60μm (Jy) | 0.53Ref | O VI lines | YesRef |
| BP (mag) | 11.37Ref | IRAS 100μm (Jy) | 5.03Ref | ||
| G (mag) | 10.60Ref | AKARI S09 (Jy) | 0.41Ref | ||
| RP (mag) | 9.59Ref | AKARI S18 (Jy) | - |
| Orbital period (days) | 1247±29Ref, 1350±16Ref | γ velocity (km/h) | -123.70±0.40Ref | Size of giant’s orbit (AU) | - |
| Eccentricity | 0Ref, 0.29±0.04Ref | RV of giant (km/h) | 6.8±0.4Ref | Separation (AU) | 1.62Ref |
| Inclination (°) | 134.8±37.9Ref | Inferior conj. of giant (JD) | 2449927,2453053 | Mass function | 0.039Ref |
| Eclipses | - | Mass ratio | 2.3Ref, 2.44Ref | ||
| Orbital ephemeris | - |
| Spectral type | M6 IIIRef, M3 IIIRef, M3.9 IIIRef, M6 IIIRef |
Mass (M⊙) | 1±0.3Ref | Pulsation | YesRef |
| Eff. temperature (K) | 3300Ref | Radius (R⊙) | - | Type | - |
| IR type | SRef | Luminosity (L⊙) | - | Pulsation period (days) | 178±3Ref |
| Metallicity [Fe/H] | -0.33±0.07Ref, -0.34±0.11Ref | Pulsation ephemeris | - |
| Type/Spectral type | WDRef | Mass (M⊙) | 0.41±0.04Ref | Spin period (min) | - |
| Shell-burning/Accreting-only | shell-burningRef | Radius (R⊙) | 0.041Ref | Accretion disk | - |
| Eff. temperature (K) | 140000-150000Ref, 165000Ref | Luminosity (L⊙) | 660Ref, 7500Ref, 1100Ref |
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| Lower limit (K) | 114000Ref | ||||
| Upper limit (K) | - |
KX TrA exhibits an emission line spectrum similar to RR Tel, as reported in Carlson & Henize (1974). Historical light curve data presented by Liller (1974) reveals multiple maxima. IUE data resembles those of V1016 Cyg and HM Sge, both symbiotic novae (Feibelman, 1988). However, Allen (1988) claimed that KX TrA behaviour is not unique within the class of symbiotic stars.