Nu2 Boötis

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ν² Boötis
Observation data Epoch J2000 Equinox J2000
Constellation	Boötes
Right ascension	15^h 31^m 46.9817^s
Declination	+40° 53′ 57.597″
Apparent magnitude (V)	4.997
Characteristics
Spectral type	A5V
U−B color index	0.11
B−V color index	0.07
R−I color index	0.04
Astrometry

Radial velocity (R_v)	-16.6 km/s
Proper motion (μ)	RA: -13.73 mas/yr Dec.: -14.92 mas/yr
Parallax (π)	7.59 ± 0.55 mas
Distance	430 ± 30 ly (132 ± 10 pc)
Absolute magnitude (M_V)	5.093

Details

Mass	3.1 M_☉
Radius	2.1 R_☉
Luminosity	40 L_☉
Temperature	7,500–10,000 K
Rotational velocity (v sin i)	182 km/s

Other designations
53 Boötis, HR 5774, HD 138629, BD+41°2611, HIP 76041, SAO 45590, GC 20883, ADS 9688, CCDM 15318+4054.
Database references
SIMBAD	data
Data sources:
Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.)
Database references
SIMBAD	data

Nu² Boötis is a spectroscopic binary approximately 430 light years from Earth. The primary component, ν² Boötis A, is a white A-type main sequence dwarf with an apparent magnitude of +4.98. Its companion, ν² Boötis B is separated from the primary by less than 0.1 arcseconds. The binary has an orbital period of 8.48 years.

References

v t e Stars of Boötes

Bayer	α (Arcturus) β (Nekkar) γ (Seginus) δ ε (Izar) ζ η (Muphrid) θ (Asellus Primus) ι (Asellus Secundus) κ (Asellus Tertius) λ μ (Alkalurops) ν¹ ν² ξ ο π ρ σ τ υ φ (Ceginus) χ ψ ω

Flamsteed	1 2 3 6 (e) 7 9 10 11 12 (d) 13 14 15 18 20 22 (f) 24 (g) 26 31 32 33 34 38 (h, Merga) 39 40 44 (i) 45 (c) 46 (b) 47 (k) 50 101 Vir

Variable	R S V RS RV RX SS ST SW TU TY TZ UU UY UZ VW XY YZ ZZ AC AD AR BP BX BY CH CI CK CN CP CR DE EF EK GU HN HP

HR	5123 5129 5137 5138 5156 5164 5220 5243 5254 5262 5270 5273 5274 5310 5335 5333 5346 5347 5360 5361 (A) 5363 5372 5373 5374 5385 5387 5388 5394 5402 5416 5422 5423 5433 5445 5448 5454 5462 5464 5467 5472 5473 5483 5493 5507 5510 5524 5529 5532 5537 5541 5550 5567 5569 5574 5575 5581 5592 5609 5630 5633 5635 5639 5640 5648 5673 5674 5677 5715 5716 5726 5741 5752 5830 5835

HD	119784 122443 124678 125076 126307 129357 131496 132406 132563 135944 136418

Gliese	GJ 526 Gliese 569

Other	CFBDSIR 1458+10 G 166-45 GD 165 HAT-P-4 LHS 2924 LkCa 19 2MASS 1503+2525 PSR J1518+4904 SDSS J1416+1348 Sigma 1785 TVLM513-46546 WASP-14

List

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