This is the list of notable stars in the constellation Corona Borealis, sorted by decreasing brightness.
Name | B | F | Var | HD | HIP | RA | Dec | vis. mag. |
abs. mag. |
Dist. (ly) | Sp. class | Notes | |||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
α CrB | α | 5 | 139006 | 76267 | 15h 34m 41.19s | +26° 42′ 53.7″ | 2.22 | 0.42 | 75 | A0V | Alphecca, Alphacca, Alphekka, Gemma, Gnosia, Gnosia Stella Coronae, Asteroth, Ashtaroth; Algol variable | ||||
β CrB | β | 3 | 137909 | 75695 | 15h 27m 49.85s | +29° 06′ 19.8″ | 3.66 | 0.94 | 114 | F0p | Nusakan; α² CVn variable, Vmax = 3.65m, Vmin = 3.72m, P = 18.487 d | ||||
γ CrB | γ | 8 | 140436 | 76952 | 15h 42m 44.64s | +26° 17′ 43.9″ | 3.81 | 0.57 | 145 | A1Vs | δ Sct variable, Vmax = 3.8m, Vmin = 3.86m, P = 0.03 d | ||||
θ CrB | θ | 4 | 138749 | 76127 | 15h 32m 55.80s | +31° 21′ 33.0″ | 4.14 | −0.76 | 311 | B6Vnn | Be star, Vmax = 4.06m, Vmin = 4.33m | ||||
ε CrB | ε | 13 | 143107 | 78159 | 15h 57m 35.30s | +26° 52′ 40.9″ | 4.14 | −0.10 | 230 | K3III | has a planet (b) | ||||
δ CrB | δ | 10 | 141714 | 77512 | 15h 49m 35.70s | +26° 04′ 06.8″ | 4.59 | 1.06 | 165 | G5III-IV | RS CVn variable, Vmax = 4.57m, Vmin = 4.69m | ||||
ζ CrB | ζ | 7 | 139891 | 76669 | 15h 39m 22.68s | +36° 38′ 09.0″ | 4.64 | −1.17 | 473 | B7V+... | ζ2, a spectroscopic triple, is 6" from ζ1 | ||||
τ CrB | τ | 16 | 145328 | 79119 | 16h 08m 58.33s | +36° 29′ 24.4″ | 4.73 | 2.03 | 113 | K0III-IV | suspected variable, Vmax = 4.72m, Vmin = 4.82m | ||||
κ CrB | κ | 11 | 142091 | 77655 | 15h 51m 13.94s | +35° 39′ 29.6″ | 4.79 | 2.32 | 101 | K0III-IV | has a planet (b) | ||||
ξ CrB | ξ | 19 | 147677 | 80181 | 16h 22m 05.89s | +30° 53′ 30.2″ | 4.86 | 1.11 | 184 | K0III | suspected variable | ||||
ι CrB | ι | 14 | 143807 | 78493 | 16h 01m 26.59s | +29° 51′ 03.9″ | 4.98 | −0.18 | 351 | A0p... | suspected α2 CVn variable, Vmax = 4.96m, Vmin = 5.08m | ||||
η CrB A | η | 2 | 137107 | 75312 | 15h 23m 12.23s | +30° 17′ 17.7″ | 4.99 | 3.64 | 61 | G2V | double star; suspected variable, Vmax = 4.94m, Vmin = 5.02m | ||||
μ CrB | μ | 6 | 139153 | 76307 | 15h 35m 14.90s | +39° 00′ 36.2″ | 5.14 | −1.08 | 571 | M2III | variable star, ΔV = 0.015m, P = 40.73320 d | ||||
ν1 CrB | ν1 | 20 | 147749 | 80197 | 16h 22m 21.42s | +33° 47′ 56.9″ | 5.20 | −0.96 | 555 | M2III | variable star, ΔV = 0.011m, P = 4.41014 d | ||||
ρ CrB | ρ | 15 | 143761 | 78459 | 16h 01m 02.80s | +33° 18′ 19.4″ | 5.39 | 4.18 | 57 | G2V | has a companion, has two planets (b & c), now thought to be a low-mass star. | ||||
ν2 CrB | ν2 | 21 | 147767 | 80214 | 16h 22m 29.22s | +33° 42′ 12.1″ | 5.40 | −0.72 | 545 | K5III | suspected variable | ||||
λ CrB | λ | 12 | 142908 | 78012 | 15h 55m 47.57s | +37° 56′ 48.3″ | 5.43 | 2.34 | 135 | F0IV | suspected variable, Vmax = 5.37m, Vmin = 5.44m | ||||
ο CrB | ο | 1 | 136512 | 75049 | 15h 20m 08.64s | +29° 36′ 58.7″ | 5.51 | 0.89 | 274 | K0III | has a planet (b) | ||||
σ CrB A | σ2 | 17 | TZ | 146361 | 79607 | 16h 14m 41.04s | +33° 51′ 31.8″ | 5.56 | 3.78 | 71 | F8V | RS CVn variable, Vmax = 5.54m, Vmin = 5.69m, P = 1.1397912 d | |||
π CrB | π | 9 | 140716 | 77048 | 15h 43m 59.32s | +32° 30′ 57.0″ | 5.57 | 1.16 | 249 | G9III: | |||||
HD 143435 | 143435 | 78276 | 15h 58m 57.70s | +36° 38′ 37.3″ | 5.61 | −1.59 | 898 | K5III | suspected variable | ||||||
HD 145849 | 145849 | 79358 | 16h 11m 48.06s | +36° 25′ 30.6″ | 5.62 | −0.74 | 610 | K3III SB | |||||||
HD 144208 | 144208 | 78649 | 16h 03m 19.36s | +36° 37′ 54.6″ | 5.79 | −0.84 | 691 | A2V+... | |||||||
υ CrB | υ | 18 | 146738 | 79757 | 16h 16m 44.77s | +29° 09′ 01.1″ | 5.80 | −1.22 | 825 | A3V | suspected variable, Vmax = 5.78m, Vmin = 5.88m | ||||
R CrB | R | 141527 | 77442 | 15h 48m 34.42s | +28° 09′ 24.4″ | 5.89 | −5.45 | 6037 | C0,0 (F8pe) | prototype R CrB variable, Vmax = 5.71m, Vmin = 15.2m | |||||
η CrB B | η | 2 | 137108 | 15h 23m 12.30s | +30° 17′ 16.0″ | 6.08 | component of the η CrB system | ||||||||
HD 139761 | 139761 | 76617 | 15h 38m 48.86s | +34° 40′ 30.3″ | 6.12 | 0.37 | 460 | K0 | |||||||
HD 146537 | 146537 | 79686 | 16h 15m 47.34s | +27° 25′ 19.8″ | 6.14 | 0.48 | 442 | K2 | |||||||
HD 139284 | 139284 | 76366 | 15h 35m 49.19s | +38° 22′ 26.2″ | 6.30 | −0.31 | 683 | K2 | |||||||
HD 145802 | 145802 | 79350 | 16h 11m 39.60s | +33° 20′ 33.8″ | 6.30 | 0.31 | 515 | K2III | suspected variable | ||||||
HD 136403 | 136403 | 75000 | 15h 19m 30.07s | +32° 30′ 53.6″ | 6.33 | 1.67 | 278 | A2m | |||||||
HD 138525 | 138525 | 76006 | 15h 31m 22.31s | +36° 37′ 00.0″ | 6.39 | 2.19 | 225 | F6III | |||||||
HD 145957 | 145957 | 79385 | 16h 12m 06.55s | +39° 03′ 20.1″ | 6.39 | −0.73 | 867 | K0 | |||||||
HD 141456 | 141456 | 77397 | 15h 48m 01.79s | +31° 44′ 08.6″ | 6.41 | −0.60 | 823 | K5 | variable star, ΔV = 0.008m, P = 9.14829 d | ||||||
23 Her | (23) | 147835 | 80247 | 16h 22m 56.48s | +32° 19′ 58.9″ | 6.41 | 0.42 | 515 | A4Vn | ||||||
HD 138341 | 138341 | 75919 | 15h 30m 22.78s | +31° 17′ 09.5″ | 6.45 | 0.70 | 460 | A4IV | |||||||
HD 139389 | 139389 | 76456 | 15h 36m 53.37s | +29° 59′ 28.8″ | 6.46 | 3.68 | 117 | F5V: | |||||||
HD 145976 | 145976 | 79441 | 16h 12m 45.43s | +26° 40′ 14.4″ | 6.48 | 2.16 | 238 | F3V | |||||||
HD 145457 | 145457 | 79219 | 16h 10m 03.91s | +26° 44′ 33.9″ | 6.57 | 1.06 | 411 | K0III | Kamuy,[1] has a planet (b) | ||||||
σ CrB B | σ1 | 17 | 146362 | 16h 14m 40.80s | +33° 51′ 30.0″ | 6.66 | component of the σ CrB system | ||||||||
S CrB | S | 136753 | 75143 | 15h 21m 23.80s | +31° 22′ 02.0″ | 7.15 | 1762 | M6.5-8e | Mira variable, Vmax = 5.8m, Vmin = 14.1m, P = 360.26 d | ||||||
RS CrB | RS | 143347 | 78235 | 15h 58m 30.76s | +36° 01′ 19.7″ | 7.44 | 1070 | M7 | semiregular variable | ||||||
ADS 9731 | 139691 | 76563 | 15h 38m 12.91s | +38° 16′ 48.6″ | 7.80 | 349 | F5+F5 | 6-star system | |||||||
V CrB | V | 141826 | 77501 | 15h 49m 31.31s | +39° 34′ 17.91″ | 7.83 | 8800 | C6,2e | Algol variable, Vmax = 6.9m, Vmin = 12.6m, P = 357.63 d | ||||||
U CrB | U | 136175 | 74881 | 15h 18m 11.35s | +31° 38′ 49.4″ | 7.83 | 811 | B6V+F8III-IV | Algol variable, Vmax = 7.66m, Vmin = 8.79m, P = 3.45220133 d | ||||||
HD 140913 | 140913 | 77152 | 15h 43m 07.45s | +28° 28′ 11.8″ | 8.07 | 143.1 | G0V | solar twin with brown dwarf companion | |||||||
RR CrB | RR | 140297 | 76844 | 15h 41m 26.23s | +38° 33′ 26.6″ | 8.20 | 1110 | M3 | semiregular variable, Vmax = 7.3m, Vmin = 8.2m, P = 60.8 d | ||||||
YY CrB | YY | 141990 | 77598 | 15h 50m 32.43s | +37° 50′ 07.6″ | 8.69 | 301 | F8V | Vmax = 8.61m, Vmin = 9.12m, P = 0.38 d | ||||||
RT CrB | RT | 139588 | 76551 | 15h 38m 03.03s | +29° 29′ 13.9″ | 10.22 | G0 | RS CVn variable, Vmax = 10.2m, Vmin = 10.82m, P = 5.117159 d | |||||||
RW CrB | RW | 139815 | 76658 | 15h 39m 15.23s | +29° 37′ 19.6″ | 10.22 | 679 | A8Vv | Algol variable, Vmax = 10.22m, Vmin = 10.78m, P = 0.7264114 d | ||||||
TW CrB | TW | 16h 06m 50.70s | +27° 16′ 34.6″ | 10.49 | F8 | Algol variable, Vmax = 10.3m, Vmin = 11.3m, P = 0.58887584 d | |||||||||
T CrB | T | 143454 | 78322 | 15h 59m 30.16s | +25° 55′ 12.6″ | 10.6 | 3500 | M3III+p | "Blaze Star"; recurrent nova and rotating ellipsoidal variable, Vmax = 2.0m, Vmin = 10.8m, P = 227.6 d | ||||||
BD +33 2642 | 77716 | 15h 51m 59.89s | +32° 56′ 54.3″ | 10.73 | 33000 | B2IVp | protoplanetary nebula | ||||||||
XO-1 | 16h 02m 11.84s | +28° 10′ 10.43″ | 11.30 | 652 | Moldoveanu; has the transiting planet XO-1b | ||||||||||
UW CrB | UW | 16h 05m 45.87s | +25° 51′ 45.17″ | 19.7 | Low-mass X-ray binary | ||||||||||
Table legend:
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See also[edit]
References[edit]
- ^ "Japan". NameExoWorlds. Retrieved 2019-12-30.
- ESA (1997). "The Hipparcos and Tycho Catalogues". Retrieved 2006-12-26.
- Kostjuk, N. D. (2002). "HD-DM-GC-HR-HIP-Bayer-Flamsteed Cross Index". Retrieved 2006-12-26.
- Roman, N. G. (1987). "Identification of a Constellation from a Position". Retrieved 2006-12-26.
- "SIMBAD Astronomical Database". Centre de Données astronomiques de Strasbourg. Retrieved 2007-01-02.
- "AAVSO Website". American Association of Variable Star Observers. Retrieved 9 March 2014.
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction