6 Canum Venaticorum

Short description: Star in the constellation Canes Venatici

6 Canum Venaticorum  Observation data
Equinox J2000.0]] (ICRS)

Constellation | Canes Venatici
Right ascension |  12h 25m 50.93786s[1]
Declination | +39° 01′ 07.0195″[1]
Apparent magnitude (V) | +5.01[2]
Characteristics
Evolutionary stage | horizontal branch[3]
Spectral type | G9 III[4]
B−V color index | 0.94[2]
Astrometry
Radial velocity (Rv)| −4.17±0.33[5] km/s
Proper motion (μ)|  RA: −77.335[1] mas/yr
Dec.: −33.782[1] mas/yr
Parallax (π)| 13.2764 ± 0.2086[1] mas
Distance| 246 ± 4 ly
(75 ± 1 pc)
Absolute magnitude (MV)| 0.65±0.044[6]
Details
Mass| 2.04[2] M☉
Radius| 9[5] R☉
Luminosity| 67.6[2] L☉
Surface gravity (log g)| 2.8[5] cgs
Temperature| 4,938±21[2] K
Metallicity [Fe/H]| −0.11[5] dex
Rotational velocity (v sin i)| 0.0[5] km/s
Age| 2.05[2] Gyr
Other designations

6 CVn, BD+39° 2521, FK5 461, HD 108225, HIP 60646, HR 4728, SAO 63000[7]

Database references
SIMBAD| data

6 Canum Venaticorum is a single[8] star in the northern constellation Canes Venatici, located 246 light years from the Sun.[1] It is visible to the naked eye as a faint yellow-hued star with an apparent visual magnitude of +5.01.[2] The star is moving closer to the Earth with a heliocentric radial velocity of −4.2 km/s.[5]

This is an evolved G-type giant star with a stellar classification of G9 III,[4] which means it has exhausted the hydrogen supply at its core and expanded. It is a red clump giant, indicating that it is on the horizontal branch and is generating energy through the helium fusion at its core.[3] Data from the Hipparcos mission provided evidence of microvariability with an amplitude of 0.0056 in magnitude and a frequency of 0.00636 per day, or one cycle every 157 days.[9]

6 Canum Venaticorum is about two[2] billion years old with double[2] the mass of the Sun. It has expanded to 9[5] times the Sun's radius and is radiating 68[2] times the Sun's luminosity from its photosphere at an effective temperature of 4,938 K.[2]

## References

1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 record for this source at VizieR.
2. ↑ 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 2.10 Luck, R. Earle (2015), "Abundances in the Local Region. I. G and K Giants", Astronomical Journal 150 (3): 88, doi:10.1088/0004-6256/150/3/88, Bibcode: 2015AJ....150...88L.
3. ↑ 3.0 3.1 Alves, David R. (August 2000), "K-Band Calibration of the Red Clump Luminosity", The Astrophysical Journal 539 (2): 732–741, doi:10.1086/309278, Bibcode: 2000ApJ...539..732A.
4. ↑ 4.0 4.1 Keenan, Philip C.; McNeil, Raymond C. (1989), "The Perkins catalog of revised MK types for the cooler stars", Astrophysical Journal Supplement Series 71: 245, doi:10.1086/191373, Bibcode: 1989ApJS...71..245K.
5. ↑ 5.0 5.1 5.2 5.3 5.4 5.5 5.6 Massarotti, Alessandro et al. (January 2008), "Rotational and Radial Velocities for a Sample of 761 HIPPARCOS Giants and the Role of Binarity", The Astronomical Journal 135 (1): 209–231, doi:10.1088/0004-6256/135/1/209, Bibcode: 2008AJ....135..209M.
6. ↑ Park, Sunkyung et al. (2013), "Wilson-Bappu Effect: Extended to Surface Gravity", The Astronomical Journal 146 (4): 73, doi:10.1088/0004-6256/146/4/73, Bibcode: 2013AJ....146...73P.
7. ↑ "6 CVn". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=6+CVn.
8. ↑ Eggleton, P. P.; Tokovinin, A. A. (2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society 389 (2): 869, doi:10.1111/j.1365-2966.2008.13596.x, Bibcode: 2008MNRAS.389..869E.
9. ↑ Koen, Chris; Eyer, Laurent (2002), "New periodic variables from the Hipparcos epoch photometry", Monthly Notices of the Royal Astronomical Society 331 (1): 45, doi:10.1046/j.1365-8711.2002.05150.x, Bibcode: 2002MNRAS.331...45K.

* v
* t
* e

Canes Venatici constellation

Stars (list)|

| Bayer|

* α (Cor Caroli)
* β (Chara)

|

Flamsteed|

* 2
* 3
* 4
* 5
* 6
* 7
* 9
* 10
* 11
* 14
* 15
* 16
* 17
* 18
* 19
* 20
* 21
* 23
* 24
* 25

Variable|

* R
* V
* W
* Y (La Superba)
* Z
* RS
* ST
* TT
* TU
* TX
* UX
* UZ
* VZ
* AM
* AW
* AX
* BH
* BI
* BL
* BM
* CL
* DD
* DG
* DT

HR|

* 4783
* 4784
* 4843
* 4904
* 4919
* 4945
* 4964
* 4997
* 5022
* 5025
* 5045
* 5067
* 5077
* 5083
* 5096
* 5108
* 5143
* 5145
* 5160
* 5161
* 5179
* 5180
* 5186
* 5195
* 5204
* 5215
* 5229
* 5245
* 5271

HD|

* 107610
* 109995
* 111572
* 114975
* 115444
* 121197

Gliese|

* Gliese 490
* Gliese 521
* GJ 3789
* GJ 3801

Other|

* GD 154
* HAT-P-12
* HAT-P-36

Star clusters|

| Globular|

* Messier 3

|

Galaxies|

| Messier|

* 51 (Whirlpool Galaxy)
* 63
* 94
* 106

|

NGC|

* 4109
* 4111
* 4117
* 4118
* 4135
* 4137
* 4138
* 4143
* 4145
* 4145A
* 4148
* 4151
* 4156
* 4163
* 4183
* 4187
* 4187B
* 4187C
* 4190
* 4214
* 4217
* 4218
* 4220
* 4226
* 4227
* 4229
* 4231
* 4232
* 4242
* 4244
* 4248
* 4288
* 4288A
* 4346
* 4369
* 4381
* 4389
* 4392
* 4395
* 4399
* 4400
* 4401
* 4449
* 4460
* 4485
* 4490
* 4509
* 4534
* 4542
* 4583
* 4617
* 4618
* 4619
* 4625
* 4627
* 4631
* 4655
* 4656
* 4657
* 4662
* 4687
* 4704
* 4707
* 4711
* 4719
* 4737
* 4741
* 4774
* 4800
* 4834
* 4837
* 4846
* 4861
* 4868
* 4870
* 4893
* 4901
* 4914
* 4917
* 4932
* 4938
* 4956
* 4959
* 4963
* 4985
* 4986
* 4987
* 4998
* 5002
* 5003
* 5005
* 5009
* 5014
* 5021
* 5023
* 5025
* 5029
* 5033
* 5040
* 5074
* 5083
* 5093
* 5096
* 5098A
* 5098B
* 5103
* 5107
* 5112
* 5117
* 5123
* 5127
* 5131
* 5141
* 5142
* 5143
* 5145
* 5149
* 5154
* 5157
* 5166
* 5166B
* 5169
* 5173
* 5187
* 5195
* 5198
* 5199
* 5214
* 5214A
* 5223
* 5225
* 5228
* 5229
* 5233
* 5238
* 5240
* 5243
* 5259
* 5263
* 5265
* 5267
* 5271
* 5273
* 5274
* 5275
* 5276
* 5277
* 5280
* 5282
* 5287
* 5289
* 5290
* 5296
* 5297
* 5301
* 5303
* 5303B
* 5305
* 5311
* 5312
* 5313
* 5318
* 5319
* 5320
* 5321
* 5325
* 5325B
* 5326
* 5336
* 5337
* 5341
* 5346
* 5347
* 5349
* 5350
* 5351
* 5352
* 5353
* 5354
* 5355
* 5358
* 5361
* 5362
* 5371
* 5377
* 5378
* 5380
* 5383
* 5396
* 5399
* 5401
* 5403
* 5406
* 5407
* 5410
* 5421A
* 5421B
* 5433
* 5439
* 5440
* 5441
* 5444
* 5445

Other|

* B2 1225+317
* 3C 268.4
* 3C 270.1
* 3C 280
* 3C 280.1
* 3C 285
* 3C 286
* 3C 288
* 3C 293
* 3C 294
* Canes Venatici I
* Canes Venatici II
* DDO 125
* DDO 169
* IC 883
* IC 4182
* KPG 404 (NGC 5394/5395)
* Markarian 59
* UGCA 292
* I Zw 36

Galaxy
clusters|

* Abell 1758
* Abell 1763
* Canes II Group
* CL J1226+3332
* M51 Group
* M94 Group
* NGC 4631 Group

Other|

* Giant Void
* GRB 060206
* SN 1937C
* SN 1985F
* SN 1994I
* SN 2005cs
* SN 2008ax

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