W43A

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W43A

W43A
Observation data
Epoch J2000      Equinox J2000
Constellation Aquila
Right ascension 18h 47m 40.97s
Declination -01° 44′ 55.4″
Characteristics
Spectral type OH
Variable type Asymptotic giant branch
Astrometry
Radial velocity (Rv) 13.8 km/s
Distance 8500 ly
Details
Other designations
IRAS 18450-0148, MSX6C G030.9441+00.0350, W 43A, TVH89 353, MSX5C G030.9444+00.0347, OH 31.0 +0.0, SVM2001b 223.
Database references
SIMBAD data
Data sources:
Hipparcos Catalogue,
CCDM (2002),
Bright Star Catalogue (5th rev. ed.)

W43A or IRAS 18450-0148 is a late-type star with an envelope of OH/IR type with a magnetically collimated jet (a protoplanetary nebula). The star is in the early stages of becoming a planetary nebula, a process that will take several thousand years.

References[edit]

  • Imai, Hiroshi; Nakashima, Jun-ichi; Diamond, Philip J.; Miyazaki, Atsushi et al. (2005). "A Biconically Expanding Flow in W43A Traced by SiO Maser Emission". The Astrophysical Journal 622 (2): L125–L128. Bibcode:2005ApJ...622L.125I. doi:10.1086/429820.