NO Apodis

NO Apodis
Observation data
Epoch J2000      Equinox J2000
Constellation Apus
Right ascension 17h 31m 27.465s[1]
Declination −80° 51 32.88[1]
Apparent magnitude (V) 5.71-5.95[2]
Characteristics
Spectral type M3III[2]
U−B color index 1.81
B−V color index 1.67
Variable type Semiregular pulsating Star
Astrometry
Radial velocity (Rv)-18.3 km/s
Proper motion (μ) RA: -2.28 ± 0.22[1] mas/yr
Dec.: -42.60 ± 0.30[1] mas/yr
Parallax (π)3.69 ± 0.28[1] mas
Distance880 ± 70 ly
(270 ± 20 pc)
Other designations
CD-80° 638, HD 156513, FK5 1455, HIP 85760, HR 6429, SAO 258769.
Database references
SIMBADdata

NO Apodis (HD 156513) is semi-regular pulsating star located in the far southern constellation Apus. It varies between magnitudes 5.71 and 5.95,[2] its pulsations of periods 26.2 and 26.6 days respectively.[3] Located around 883 light-years distant, it shines with a luminosity approximately 2059 times that of the Sun and has a surface temperature of 3568 K.[4]

References

  1. 1 2 3 4 5 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–64. arXiv:0708.1752Freely accessible. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.Vizier catalog entry
  2. 1 2 3 Watson, Christopher (25 August 2009). "NO Apodis". The International Variable Star Index. American Association of Variable Star Observers. Retrieved 31 March 2015.
  3. Tabur, V.; Bedding, T.R.; Kiss, L.L.; Moon, T.T.; Szeidl, B.; Kjeldsen, H. (2009). "Long-term photometry and periods for 261 nearby pulsating M giants". Monthly Notices of the Royal Astronomical Society. 400 (4): 1945–61. arXiv:0908.3228Freely accessible. Bibcode:2009MNRAS.400.1945T. doi:10.1111/j.1365-2966.2009.15588.x.
  4. McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (2012). "Fundamental Parameters and Infrared Excesses of Hipparcos Stars". Monthly Notices of the Royal Astronomical Society. 427 (1): 343–57. arXiv:1208.2037Freely accessible. Bibcode:2012MNRAS.427..343M. doi:10.1111/j.1365-2966.2012.21873.x.


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