63 Cygni

K-type bright giant/supergiant star in the constellation Cygnus

This article is about f2 Cygni. For other stars with this Bayer designation, see f Cygni.

63 Cygni  Observation data
Epoch J2000 Equinox J2000

Constellation | Cygnus
Right ascension | 21h 06m 36.103s[1]
Declination | +47° 38′ 54.223″[1]
Apparent magnitude (V) | 4.56[2]
Characteristics
Spectral type | K4 Ib–IIa[3]
B−V color index | 1.569±0.012[2]
Astrometry
Radial velocity (Rv)| −26.32±0.23[2] km/s
Proper motion (μ)|  RA: +5.992[4] mas/yr
Dec.: −1.067[4] mas/yr
Parallax (π)| 2.66±0.29 mas[4]
Distance| approx. 1,200 ly
(approx. 380 pc)
Absolute magnitude (MV)| −2.93[5]
Details
Radius| 138[1] R☉
Luminosity| 3,981 - 4,130[1] L☉
Surface gravity (log g)| 1.27[6] cgs
Temperature| 3,927[1] K
Metallicity [Fe/H]| 0.12[6] dex
Rotational velocity (v sin i)| 6.3[7] km/s
Other designations

f2 Cyg, 63 Cyg, BD+47°3292, FK5 3688, HD 201251, HIP 104194, HR 8089, SAO 50456, WDS J21066+4739[8]

Database references
SIMBAD| data

63 Cygni is a single[9] star in the northern constellation of Cygnus, located around 1,030 light years away from Sun. It is visible to the naked eye as an orange-hued star with an apparent visual magnitude of 4.56.[2] 63 Cyg is moving closer to the Earth with a heliocentric radial velocity of −26 km/s.[2]

This is an evolved star showing a stellar spectrum with mixed traits between a bright giant and supergiant. It has been chosen as a spectral standard for the class of K4 Ib–IIa.[3]

For reasons that are not yet clear, 63 Cygni is displaying very long period (982 days) and low-amplitude (742 m/s) variations in radial velocity.[2] The star has expanded to 35[2] times the Sun's radius and is radiating 4,397[5] times the Sun's luminosity from its photosphere at an effective temperature of 4,204 K.[6]

## References

[edit]

1. ^ a b c d e Messineo, M.; Brown, A. G. A. (2019). "A Catalog of Known Galactic K-M Stars of Class I Candidate Red Supergiants in Gaia DR2". The Astronomical Journal. 158 (1): 20. arXiv:1905.03744. Bibcode:2019AJ....158...20M. doi:10.3847/1538-3881/ab1cbd. S2CID 148571616.
2. ^ a b c d e f g Lee, B. -C.; et al. (June 2014), "Low-amplitude and long-period radial velocity variations in giants HD 3574, 63 Cygni, and HD 216946", Astronomy & Astrophysics, 566: 6, arXiv:1405.5955, Bibcode:2014A&A...566A.124L, doi:10.1051/0004-6361/201321863, S2CID 54177778, A124.
3. ^ a b Keenan, Philip C.; McNeil, Raymond C. (1989), "The Perkins catalog of revised MK types for the cooler stars", Astrophysical Journal Supplement Series, 71: 245, Bibcode:1989ApJS...71..245K, doi:10.1086/191373.
4. ^ a b c 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.
5. ^ a b 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.
6. ^ a b c Earle Luck, R. (2014), "Parameters and Abundances in Luminous Stars", The Astronomical Journal, 147 (6): 137, Bibcode:2014AJ....147..137L, doi:10.1088/0004-6256/147/6/137.
7. ^ Lèbre, A.; et al. (May 2006), "Lithium abundances and rotational behavior for bright giant stars", Astronomy and Astrophysics, 450 (3): 1173–1179, Bibcode:2006A&A...450.1173L, doi:10.1051/0004-6361:20053485.1173-1179&rft.date=2006-05&rft_id=info:doi/10.1051/0004-6361:20053485&rft_id=info:bibcode/2006A&A...450.1173L;&rft.aulast=Lèbre&rft.aufirst=A.&rft.au=de+Laverny,+P.&rft.au=Do+Nascimento,+J.+D.+Jr.&rft.au=de+Medeiros,+J.+R.&rfr_id=info:sid/en.wikipedia.org:63+Cygni" class="Z3988">
8. ^ "63 Cyg". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-01-18.
9. ^ 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 14878976.869-879&rft.date=2008-09&rft_id=info:arxiv/0806.2878&rft_id=https://api.semanticscholar.org/CorpusID:14878976#id-name=S2CID&rft_id=info:doi/10.1111/j.1365-2966.2008.13596.x&rft_id=info:bibcode/2008MNRAS.389..869E&rft.aulast=Eggleton&rft.aufirst=P.+P.&rft.au=Tokovinin,+A.+A.&rfr_id=info:sid/en.wikipedia.org:63+Cygni" class="Z3988">

* v
* t
* e

Constellation of Cygnus

* List of stars in Cygnus

Stars|

| Bayer|

* α (Deneb)
* β (Albireo)
* γ (Sadr)
* δ (Fawaris)
* ε (Aljanah)
* ζ
* η
* θ
* ι1
* ι2
* κ
* λ
* μ
* ν
* ξ
* o1
* o2
* ο3
* π1 (Azelfafage)
* π2
* ρ
* σ
* τ
* υ
* φ
* χ
* ψ
* ω1
* ω2
* P
* Q

|

Flamsteed|

* 2
* 4
* 8
* 9
* 15
* 16 (c)
* 17
* 20 (d)
* 22
* 23
* 26 (e)
* 27 (b1)
* 28 (b2)
* 29 (b3)
* 33
* 35
* 39
* 41
* 47
* 52
* 55
* 56
* 57
* 59 (f1)
* 61
* 63 (f2)
* 68 (A)
* 71 (g)
* 72
* 74
* 75

Variable|

* R
* T
* W
* X
* Y
* RW
* SS
* SU
* TT
* AZ
* BC
* BI
* CH
* KY
* V380
* V389
* V404
* V476
* V1027
* V1057
* V1143
* V1191
* V1334
* V1489
* V1500
* V1668
* V1794
* V1974
* V2214
* V2513

HR|

* 7633
* 7767
* 7912
* 8193

HD|

* 185269
* 185351
* 187123
* 188753
* 190655
* 191612
* 191806
* 197037

Gliese|

* 777
* 806
* 1245

Kepler|

* 2
* 3
* 5
* 6
* 11
* 15
* 16
* 17
* 18
* 22
* 23
* 27
* 28
* 29
* 31
* 32
* 33
* 34
* 35
* 36
* 39
* 40
* 41
* 42
* 43
* 44
* 45
* 47
* 51
* 56
* 61
* 63
* 64 (PH1)
* 66
* 67
* 68
* 69
* 70
* 78
* 80
* 84
* 86 (PH2)
* 87
* 89
* 107
* 167
* 182
* 186
* 223
* 289
* 371
* 385
* 411
* 419
* 432
* 445
* 451
* 452
* 560
* 737
* 1229
* 1520
* 1625
* 1649
* 1708

WR|

* 133
* 134
* 135
* 136
* 137
* 138a
* 140
* 142
* 147
* 148
* 150

Other|

* AFGL 2591
* BD+40° 4210
* BD+43 3654
* Cygnus OB2 #8A
* Cygnus OB2 #12
* Cygnus X-1
* Cygnus X-3
* G79.29+0.46
* G 208-44
* G 208-45
* GSC 03949-00967
* HAT-P-17
* KELT-9
* KELT-20
* KIC 8462852
* KIC 9832227
* KIC 9970396
* KIC 11026764
* KIC 11145123
* KOI-5
* KOI-74
* KOI-81
* KOI-256
* MWC 349
* N6946-BH1
* PSR J2032+4127
* SPECULOOS-3
* W75N(B)-VLA2
* WASP-48
* WISE J2000+3629
* Wolf 1069

Star
clusters|

| Association|

* Cygnus OB2
* Cygnus OB7
* Cygnus OB9

|

Open|

* Berkeley 86
* DR 6
* IC 5146
* Messier 29
* Messier 39
* NGC 6811
* NGC 6819
* NGC 6834
* NGC 6866
* NGC 6871
* NGC 6910

Molecular
clouds|

* Cygnus Molecular Nebula Complex
* Cygnus X (including DR 21)

Nebulae|

| Dark|

* Barnard 146
* Barnard 147
* IC 5146
* L1014

|

H II|

* NGC 6914
* North America Nebula
* Pelican Nebula
* Sadr Region
* Sh2-101
* Sh2-106

Planetary|

* Abell 78
* Egg Nebula
* IRAS 19475+3119
* IRAS 20324+4057
* Kronberger 61
* M1-92
* NGC 6826
* NGC 6881
* NGC 6884
* NGC 7008
* NGC 7026
* NGC 7027
* NGC 7048
* Soap Bubble Nebula

WR|

* Crescent Nebula

SNR|

* Cygnus Loop (including Veil Nebula)

Galaxies|

| NGC|

* 6801
* 6946
* 7013

|

Other|

* 3C 438
* 4C +48.48
* Cygnus A
* ZTF J203349.8+322901.1

Exoplanets|

| Kepler|

* 2b
* 3b
* 3c
* 5b
* 6b
* 11b
* 15b
* 16b
* 17b
* 22b
* 23b
* 28b
* 32b
* 33b
* 34b
* 36b
* 39b
* 40b
* 41b
* 47b
* 56b
* 61b
* 64b (PH1b)
* 68b
* 69b
* 70b
* 78b
* 87c
* 186b
* e
* f
* 371b
* c
* 409b
* 419b
* 432b
* 451b
* 452b
* 560b
* 737b
* 1229b
* 1520b
* 1625b
* 1652b
* 1658b
* 1649b
* c
* 1708b

|

Other|

* b3 Cygni b
* HD 185269 b
* HD 187123 b
* c
* HD 191806 b
* KELT-9b
* KELT-20b
* TrES-5b

Exomoons|

| Kepler|

* 1625b I
* 1708b I

|

*[RA:]: Right Ascension
*[Dec.:]: Declination
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