Iota2 Normae

For other star systems with this Bayer designation, see ι Normae.
ι2 Normae


Location of ι2 Normae (circled)

Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Norma
Right ascension 16h 09m 18.54876s[1]
Declination −57° 56′ 03.5420″[1]
Apparent magnitude (V) 5.57[2]
Characteristics
Spectral type B9.5V[3]
Astrometry
Radial velocity (Rv)0.00 ± 0.37[4] km/s
Proper motion (μ) RA: −13.35 ± 0.48[1] mas/yr
Dec.: −59.33 ± 0.46[1] mas/yr
Parallax (π)11.65 ± 0.57[1] mas
Distance280 ± 10 ly
(86 ± 4 pc)
Other designations
HR 5994, HD 144480, HIP 79153
Database references
SIMBADdata

Iota2 Normae (Iota2 Nor), is a star located in the constellation Norma. Iota2 Normae is also known as HR 5994, and HD 144480. The star is located at Right Ascension 16h 09m 18sec and Declination -57 deg 56 arcmin 04 arcsec. It is to the west of Rigel Kentaurus but can be difficult to see in the milky way.[5]

Iota2 Normae is an B9.5V blue-white main sequence star with an effective temperature of 10593 Kelvin.[6] It has an apparent visual magnitude of +5.57. Measuring its parallax reveals it is located 280 ± 10 light-years away from the sun,[1] and has a mass 2.3 to 2.6 times that of the Sun.[6] It shines with a luminosity approximately 40 times that of the Sun.[7]

References

  1. 1 2 3 4 5 6 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.
  2. ↑ Lake, R. (1965). "Photometric Magnitudes and Colours for Bright Southern Stars (Sixth List)". Monthly Notes of the Astron. Soc. Southern Africa. 24: 41. Bibcode:1965MNSSA..24...41L.
  3. ↑ Houk, N.; Cowley, A. P. (1975). "University of Michigan Catalogue of two-dimensional spectral types for the HD stars. Volume I. Declinations -90_ to -53_ƒ0". University of Michigan Catalogue of two-dimensional spectral types for the HD stars. Volume I. Declinations -90_ to -53_ƒ0. Bibcode:1975MSS...C01....0H.
  4. ↑ Kharchenko, N. V.; Scholz, R.-D.; Piskunov, A. E.; Röser, S.; Schilbach, E. (2007). "Astrophysical supplements to the ASCC-2.5: Ia. Radial velocities of ˜55000 stars and mean radial velocities of 516 Galactic open clusters and associations". Astronomische Nachrichten. 328 (9): 889. Bibcode:2007AN....328..889K. doi:10.1002/asna.200710776.
  5. ↑ http://www.constellation-guide.com/wp-content/uploads/2013/04/Norma-constellation-map.gif
  6. 1 2 David, Trevor J.; Hillenbrand, Lynne A. (2015). "The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets". The Astrophysical Journal. 804 (2): 146. Bibcode:2015ApJ...804..146D. doi:10.1088/0004-637X/804/2/146.
  7. ↑ McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (2012). "Fundamental parameters and infrared excesses of Hipparcosstars". Monthly Notices of the Royal Astronomical Society. 427: 343. arXiv:1208.2037Freely accessible. Bibcode:2012MNRAS.427..343M. doi:10.1111/j.1365-2966.2012.21873.x.

External links


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