To install click the Add extension button. That's it.

The source code for the WIKI 2 extension is being checked by specialists of the Mozilla Foundation, Google, and Apple. You could also do it yourself at any point in time.

How to transfigure the Wikipedia

Would you like Wikipedia to always look as professional and up-to-date? We have created a browser extension. It will enhance any encyclopedic page you visit with the magic of the WIKI 2 technology.

Try it — you can delete it anytime.

Install in 5 seconds
4,5
Kelly Slayton
Congratulations on this excellent venture… what a great idea!
Alexander Grigorievskiy
I use WIKI 2 every day and almost forgot how the original Wikipedia looks like.
Live Statistics
English Articles
Improved in 24 Hours
Added in 24 Hours
Languages
Recent
Show all languages
What we do. Every page goes through several hundred of perfecting techniques; in live mode. Quite the same Wikipedia. Just better.
Great Wikipedia has got greater.
.
Leo
Newton
Brights
Milds

50 Boötis

From Wikipedia, the free encyclopedia

This article is about k Boötis. It is not to be confused with κ (kappa) Boötis.
50 Boötis
Observation data
Epoch J2000      Equinox J2000
Constellation Boötes
Right ascension 15h 21m 48.57546s[1]
Declination +32° 56′ 01.2942″[1]
Apparent magnitude (V) 5.38[2]
Characteristics
Spectral type B9 Vn[3]
B−V color index −0.051±0.002[2]
Astrometry
Radial velocity (Rv)−9.0±3.5[2] km/s
Proper motion (μ) RA: −48.846[1] mas/yr
Dec.: +13.916[1] mas/yr
Parallax (π)11.8607 ± 0.1288 mas[1]
Distance275 ± 3 ly
(84.3 ± 0.9 pc)
Absolute magnitude (MV)0.86[2]
Details
Mass3.31[4] M☉
Radius3.1[5] R☉
Luminosity55.17[2] L☉
Surface gravity (log g)4.35[4] cgs
Temperature12,140±413[4] K
Rotational velocity (v sin i)232[4] km/s
Age174[4] Myr
Other designations
50 Boo, BD+33°2581, FK5 1395, GC 20672, HD 136849, HIP 75178, HR 5718, SAO 64656[6]
Database references
SIMBADdata

50 Boötis is a single[7] star located 275[1] light years away from the Sun in the northern constellation of Boötes.[6] It is visible to the naked eye as a dim, blue-white hued star with an apparent visual magnitude of 5.38.[2] The object is moving closer to the Earth with a heliocentric radial velocity of −9 km/s.[2]

This is a B-type main-sequence star with a stellar classification of B9 Vn,[3] where the 'n' notation indicates "nebulous" lines due to rapid rotation. It is 174[4] million years old with a projected rotational velocity of 232[4] km/s. The star has 3.31[4] times the mass of the Sun and about 3.1[5] times the Sun's radius. It is radiating 55[2] times the Sun's luminosity from its photosphere at an effective temperature of 12,140 K.[4]

References

  1. ^ a b c d e f 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.
  2. ^ a b c d e f g h Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015, S2CID 119257644.
  3. ^ a b Cowley, A.; et al. (April 1969), "A study of the bright A stars. I. A catalogue of spectral classifications", Astronomical Journal, 74: 375–406, Bibcode:1969AJ.....74..375C, doi:10.1086/110819.
  4. ^ a b c d e f g h i 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, arXiv:1501.03154, Bibcode:2015ApJ...804..146D, doi:10.1088/0004-637X/804/2/146, S2CID 33401607.
  5. ^ a b Pasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)", Astronomy and Astrophysics (Third ed.), 367 (2): 521–524, arXiv:astro-ph/0012289, Bibcode:2001A&A...367..521P, doi:10.1051/0004-6361:20000451, S2CID 425754.
  6. ^ a b "50 Boo". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved May 12, 2019.
  7. ^ Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x, S2CID 14878976.
This page was last edited on 27 March 2022, at 06:24
Basis of this page is in Wikipedia. Text is available under the CC BY-SA 3.0 Unported License. Non-text media are available under their specified licenses. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc. WIKI 2 is an independent company and has no affiliation with Wikimedia Foundation.
Contact WIKI 2
Introduction
Terms of Service
Privacy Policy