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

47 Aquarii

From Wikipedia, the free encyclopedia

47 Aquarii
Observation data
Epoch J2000      Equinox J2000
Constellation Aquarius
Right ascension 22h 21m 35.56816s[1]
Declination −21° 35′ 53.6431″[1]
Apparent magnitude (V) 5.135[2]
Characteristics
Spectral type K0 III[3]
B−V color index 1.054[2]
Astrometry
Radial velocity (Rv)+48.2[2] km/s
Proper motion (μ) RA: −10.986[1] mas/yr
Dec.: −83.914[1] mas/yr
Parallax (π)18.0015 ± 0.1709 mas[1]
Distance181 ± 2 ly
(55.6 ± 0.5 pc)
Absolute magnitude (MV)+1.52[4]
Details[5]
Mass1.35 M☉
Radius7.86 R☉
Luminosity30 L☉
Surface gravity (log g)2.69 cgs
Temperature4,750 K
Metallicity [Fe/H]−0.18±0.08 dex
Rotational velocity (v sin i)1.43 km/s
Age2.4[2] Gyr
Other designations
BD−22° 5897, FK5 1584, HD 212010, HIP 110391, HR 8516, SAO 191083[6]
Database references
SIMBADdata

47 Aquarii, abbreviated 47 Aqr, is a star in the zodiac constellation of Aquarius. 47 Aquarii is its Flamsteed designation. It is a faint star but visible to the naked eye in good seeing conditions, having an apparent visual magnitude of 5.135.[2] Based upon an annual parallax shift of 18.0 mas,[1] it is located 181 light years away. At that distance, the visual magnitude of the star is diminished by an extinction of 0.088 due to interstellar dust.[5] It is moving further from the Earth with a heliocentric radial velocity of +48 km/s.[2]

This is an evolved giant star currently on the red giant branch[5] with a stellar classification of K0 III.[3] The star has 1.35 times the mass of the Sun and has expanded to 7.86 times the Sun's radius. It is radiating 30 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,750 K.[5]

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.
  2. ^ a b c d e f Luck, R. Earle (2015), "Abundances in the Local Region. I. G and K Giants", Astronomical Journal, 150 (3), 88, arXiv:1507.01466, Bibcode:2015AJ....150...88L, doi:10.1088/0004-6256/150/3/88, S2CID 118505114.
  3. ^ a b Houk, Nancy; Smith-Moore, M. (1978), Michigan catalogue of two-dimensional spectral types for the HD stars, vol. 4, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode:1988mcts.book.....H.
  4. ^ 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.
  5. ^ a b c d Jones, M. I.; et al. (December 2011), "Study of the impact of the post-MS evolution of the host star on the orbits of close-in planets. I. Sample definition and physical properties", Astronomy & Astrophysics, 536: 7, arXiv:1110.6459, Bibcode:2011A&A...536A..71J, doi:10.1051/0004-6361/201117887, S2CID 55769003, A71.
  6. ^ "47 Aqr". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved October 23, 2018.
This page was last edited on 25 August 2023, at 14:08
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