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S Coronae Borealis information


S Coronae Borealis
Observation data
Epoch J2000      Equinox J2000
Constellation Corona Borealis
Right ascension 15h 21m 23.9561s[1]
Declination +31° 22′ 02.573″[1]
Apparent magnitude (V) 5.3 – 13.6[2]
Characteristics
Spectral type M7e[3]
U−B color index 0.36[1]
B−V color index 1.71[1]
Variable type Mira[2]
Astrometry
Radial velocity (Rv)-5.12[4] km/s
Proper motion (μ) RA: -7.73[1] mas/yr
Dec.: -13.03[1] mas/yr
Parallax (π)2.39 ± 0.17 mas[5]
Distance418+21
−18
[5] pc
Absolute magnitude (MV)-0.8±0.3[6]
Details
Mass1.34[7] M
Radius308[7] (537–664)[8] R
Luminosity5,897[9] L
Temperature2,864[7] (2,350–2,600)[8] K
Other designations
S Coronae Borealis, HD 136753, BD+31°2725, HIP 75143, GC 20662, SAO 64652, GSC 02563-01338, DO 15223, AAVSO 1517+31
Database references
SIMBADdata
Light curve for the Mira variable S Coronae Borealis over six years

S Coronae Borealis (S CrB) is a Mira variable star in the constellation Corona Borealis. Its apparent magnitude varies between 5.3 and 13.6, with a period of 360 days—just under a year. Within the constellation, it lies to the west of Theta Coronae Borealis, and around 1 degree southeast of the eclipsing binary star U Coronae Borealis.[10]

  1. ^ a b c d e f Cite error: The named reference hipparcos was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference AAVSO was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference bieging was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference famaey was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference vlemmings was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference absmag1977 was invoked but never defined (see the help page).
  7. ^ a b c Cite error: The named reference takeuti was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference wallerstein was invoked but never defined (see the help page).
  9. ^ McDonald, I.; De Beck, E.; Zijlstra, A. A.; Lagadec, E. (2018). "Pulsation-triggered dust production by asymptotic giant branch stars". Monthly Notices of the Royal Astronomical Society. 481 (4): 4984. arXiv:1809.07965. Bibcode:2018MNRAS.481.4984M. doi:10.1093/mnras/sty2607. S2CID 118969263.
  10. ^ Plotner, Tammy; Vogt, Ken (2009). The Night Sky Companion: A Yearly Guide to Sky-Watching 2009. The Patrick Moore Practical Astronomy Series. Springer Science & Business Media. p. 194. ISBN 978-0387795096.

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S Coronae Borealis

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S Coronae Borealis (S CrB) is a Mira variable star in the constellation Corona Borealis. Its apparent magnitude varies between 5.3 and 13.6, with a period...

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Corona Borealis

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magnitude 2.2 Alpha Coronae Borealis. The yellow supergiant R Coronae Borealis is the prototype of a rare class of giant stars—the R Coronae Borealis variables—that...

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T Coronae Borealis

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T Coronae Borealis (T CrB), nicknamed the Blaze Star, is a recurrent nova in the constellation Corona Borealis. It was first discovered in outburst in...

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Alpha Coronae Borealis

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Alpha Coronae BorealisCoronae Borealis, abbreviated Alpha CrB, α CrB), officially named Alphecca /ælˈfɛkə/, is an eclipsing binary star in the constellation...

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R Coronae Borealis

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R Coronae Borealis is a low-mass yellow supergiant star in the constellation of Corona Borealis. It is the prototype of the R Coronae Borealis variable...

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Rho Coronae Borealis

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Rho Coronae Borealis (ρ CrB, ρ Coronae Borealis) is a yellow dwarf star 57.1 light-years (17.5 parsecs) away in the constellation of Corona Borealis. The...

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Theta Coronae Borealis

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Epsilon Coronae Borealis

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Epsilon Coronae Borealis, Latinized from ε Coronae Borealis, is a multiple star system in the constellation Corona Borealis located around 230 light-years...

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Beta Coronae Borealis

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R Coronae Borealis variable

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An R Coronae Borealis variable (abbreviated RCB, R CrB) is an eruptive variable star that varies in luminosity in two modes, one low amplitude pulsation...

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Tau Coronae Borealis

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Tau Coronae Borealis, Latinized from τ Coronae Borealis, is a possible astrometric and spectroscopic binary star system in the northern constellation...

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Delta Coronae Borealis

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Delta Coronae Borealis, Latinized from δ Coronae Borealis, is a variable star in the constellation Corona Borealis. Its apparent magnitude varies regularly...

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Eta Coronae Borealis

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Eta Coronae BorealisCoronae Borealis, η CrB) is a stellar system that lies approximately 58 light-years away. The primary component is a mid-wide binary...

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Sigma Coronae Borealis

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Sigma Coronae Borealis (σ CrB) is a star system in the constellation of Corona Borealis. It is a quintuple star system containing three sunlike main-sequence...

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Zeta Coronae Borealis

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ζ Coronae Borealis, Latinised as Zeta Coronae Borealis, is the Bayer designation of a double star in the constellation Corona Borealis. The two components...

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U Coronae Borealis

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U Coronae Borealis (U CrB) is an Algol-type eclipsing binary star system in the constellation Corona Borealis. Its apparent magnitude varies between 7...

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Omicron Coronae Borealis

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Omicron Coronae Borealis, Latinized from o Coronae Borealis, is a star in the northern constellation of Corona Borealis. It is a faint star but visible...

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Gamma Coronae Borealis

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Gamma Coronae Borealis, Latinized from γ Coronae Borealis, is a binary star system in the northern constellation of Corona Borealis. It is visible to...

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W Coronae Borealis

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W Coronae Borealis (W CrB) is a Mira-type long period variable star in the constellation Corona Borealis. Its apparent magnitude varies between 7.8 and...

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Kappa Coronae Borealis

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Kappa Coronae Borealis, Latinized from κ Coronae Borealis, is a star approximately 98 light years away in the constellation of Corona Borealis. The apparent...

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V Coronae Borealis

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V Coronae Borealis (V CrB) is a Mira-type long period variable star and carbon star in the constellation Corona Borealis. Its apparent magnitude varies...

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Kappa Coronae Borealis b

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Kappa Coronae Borealis b is an extrasolar planet approximately 98 light-years away in the constellation of Corona Borealis. This planet was discovered...

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Iota Coronae Borealis

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Iota Coronae Borealis, Latinized from ι Coronae Borealis, is a binary star system in the constellation Corona Borealis. It is visible to the naked eye...

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TY Coronae Borealis

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TY Coronae Borealis, also known as Ross 808, is a variable white dwarf star of the DAV (or ZZ Ceti) type in the constellation Corona Borealis. It has a...

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RS Coronae Borealis

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RS Coronae Borealis is a semiregular variable star located in the constellation Corona Borealis with a parallax of 2.93mas being a distance of 341 parsecs...

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RR Coronae Borealis

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RR Coronae Borealis (RR CrB, HD 140297, HIP 76844) is a M3-type semiregular variable star located in the constellation Corona Borealis with a parallax...

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Upsilon Coronae Borealis

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Upsilon Coronae Borealis, Latinized from υ Coronae Borealis, is a solitary star in the northern constellation of Corona Borealis. It is a white-hued star...

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Lambda Coronae Borealis

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Lambda Coronae Borealis, its name Latinised from λ Coronae Borealis, is a single star in the northern constellation of Corona Borealis. In publications...

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Pi Coronae Borealis

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Pi Coronae Borealis, Latinized from π Coronae Borealis, is a solitary, orange-hued star in the northern constellation of Corona Borealis. Its apparent...

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Nu2 Coronae Borealis

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Nu2 Coronae Borealis is a solitary, orange-hued star located in the northern constellation of Corona Borealis. It is faintly visible to the naked eye...

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