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
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

15 Canis Majoris

From Wikipedia, the free encyclopedia

15 Canis Majoris

A visual band light curve for EY Canis Majoris (1992)[1]
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Canis Major
Right ascension 06h 53m 32.907s[2]
Declination −20° 13′ 27.32″[2]
Apparent magnitude (V) +4.82[3]
Characteristics
Spectral type B1 Ib[4]
U−B color index -0.96[5]
B−V color index −0.212±0.013[3]
Variable type β Cep[4][6]
Astrometry
Radial velocity (Rv)28.00[7] km/s
Proper motion (μ) RA: −5.46±0.16[2] mas/yr
Dec.: +3.58±0.17[2] mas/yr
Parallax (π)2.68 ± 0.24 mas[2]
Distance1,200 ± 100 ly
(370 ± 30 pc)
Absolute magnitude (MV)−3.02[3]
Details[4]
Mass12.8±1.2 M☉
Radius6.8±1.2 R☉
Luminosity20,000+12,000
−7,400 L☉
Surface gravity (log g)3.89±0.20 cgs
Temperature26,100±1,200 K
Rotational velocity (v sin i)20±12 km/s
Other designations
15 CMa, EY CMa, BD−20°1616, FK5 2532, GC 9034, HD 50707, HIP 33092, HR 2571, SAO 172520[8]
Database references
SIMBADdata

15 Canis Majoris is a variable star in the southern constellation of Canis Major,[8] located roughly 1,200 light years away from the Sun.[2] It has the variable star designation EY Canis Majoris; 15 Canis Majoris is the Flamsteed designation. The star is visible to the naked eye as a faint, blue-white hued star with a baseline apparent visual magnitude of +4.82.[3] It is moving away from the Earth with a heliocentric radial velocity of 28 km/s.[7]

This is a B-type supergiant star with a stellar classification of B1 Ib.[4] It is classified as a Beta Cephei type variable star and its brightness varies from magnitude +4.79 down to +4.84 with a period of 4.430 h.[6] The star has 12.8 times the mass of the Sun and 6.8 times the Sun's radius. It is radiating 20,000 times the luminosity of the Sun from its photosphere at an effective temperature of 26,100 K.[4]

YouTube Encyclopedic

  • 1/1
    Views:
    266 420
  • VY Canis Majoris

Transcription

References

  1. ^ Heynderickx, D. (December 1992). "A photometric study of beta Cephei stars. I. Frequency analyses". Astronomy & Astrophysics Supplement Series. 96: 207–254. Bibcode:1992A&AS...96..207H. Retrieved 14 November 2021.
  2. ^ a b c d e f van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID 18759600. Archived from the original on 2016-04-02. Vizier catalog entry 
  3. ^ a b c d 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.
  4. ^ a b c d e Hubrig, S.; et al. (January 2009), "New magnetic field measurements of beta Cephei stars and Slowly Pulsating B stars", Astronomische Nachrichten, 330 (4): 317, arXiv:0902.1314, Bibcode:2009AN....330..317H, doi:10.1002/asna.200811187, S2CID 17497112
  5. ^ Mermilliod, J.-C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV Data. Bibcode:1986EgUBV........0M.
  6. ^ a b Samus, N. N.; et al. (2017), "General Catalogue of Variable Stars", Astronomy Reports, 5.1, 61 (1): 80–88, Bibcode:2017ARep...61...80S, doi:10.1134/S1063772917010085, S2CID 125853869.
  7. ^ a b Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.
  8. ^ a b "15 CMa". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved April 30, 2019.
This page was last edited on 7 January 2024, at 21:33
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