DD Microscopii

DD Microscopii, also known as CD-43 14304, is a binary star system in the constellation Microscopium. Its apparent magnitude is 11.0.[1] It is a symbiotic star system composed of an orange giant of spectral type K2III and white dwarf in close orbit, with the smaller star ionizing the stellar wind of the larger star. The system is metal-poor. Combined with its high galactic latitude, this indicates that the star system has its origin in the galactic halo of the Milky Way.[2]

DD Microscopii
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Microscopium
Right ascension  20h 51m 58.76157s [1]
Declination −33° 10′ 40.7037″ [1]
Apparent magnitude (V) 11.0
Characteristics
Spectral type K2III[2]
Astrometry
Parallax (π)0.0877 ± 0.0372[3] mas
Distanceapprox. 40,000 ly
(approx. 11,000 pc)
Other designations
CD-43° 14304
Database references
SIMBADdata

References
  1. SIMBAD, DD Microscopii (accessed 25 March 2015)
  2. Pereira, C.B.; Roig, F. (2009). "High-Resolution Spectroscopic Observations of Four Yellow-Type Symbiotic Stars: CD-43°14304, Hen 3-1213, Hen 3-863, and StHα 176". The Astronomical Journal. 137 (1): 118–28. Bibcode:2009AJ....137..118P. doi:10.1088/0004-6256/137/1/118.
  3. Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.


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