1 Boötis

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Template:Short description

1 Boötis
Observation data
Epoch J2000      Equinox J2000
Constellation Boötes
A
Right ascension Template:RA[1]
Declination Template:DEC[1]
Apparent magnitude (V) 5.78[2]
A
Right ascension Template:RA[3]
Declination Template:DEC[3]
Apparent magnitude (V) 9.60[2]
Characteristics
Spectral type A1 V[4] + Am[2]
U−B Template:Engvar +0.02[5]
B−V Template:Engvar +0.02[5]
Astrometry
A
Radial velocity (Rv)−26[6] km/s
Proper motion (μ) RA: −46.723[1] mas/yr
Dec.: +23.172[1] mas/yr
Parallax (π)10.3308±0.0533 mas[1]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)+0.79[7]
B
Proper motion (μ) RA: −44,301[3] mas/yr
Dec.: +28.326[3] mas/yr
Parallax (π)10.4702±0.0232 mas[3]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Details
1 Boö A
MassTemplate:Val[7] Template:Solar mass
Radius2.5[1] Template:Solar radius
Luminosity56[7] Template:Solar luminosity
Surface gravity (log g)3.90[1] cgs
Temperature9,863[7] K
Rotational velocity (v sin i)60[4] km/s
Age323[7] Myr
1 Boö B
Mass1.02[7] Template:Solar mass
Radius1.1[3] Template:Solar radius
Luminosity0.76[7] Template:Solar luminosity
Surface gravity (log g)4.28[3] cgs
Temperature5,370[7] K
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Template:Odlist[8]
Database references
SIMBADdata
B

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1 Boötis (1 Boo) is a binary star[2] system in the northern constellation of Boötes, located 318 light years away from the Sun. It is visible to the naked eye as a dim, white-hued star with a combined apparent visual magnitude of 5.71.[5] The pair had an angular separation of Template:Val as of 2008. It is moving closer to the Earth with a heliocentric radial velocity of −26 km/s.[6]

The magnitude 5.78[2] primary component is an A-type main-sequence star with a stellar classification of A1 V.[4] This star has 2.5 times the mass of the Sun[7] and is radiating 56 times the Sun's luminosity[7] from its photosphere at an effective temperature of 9,863 K.[7] It is 323 million years old[7] and is spinning with a projected rotational velocity of 60 km/s.[4]

The system is a source for X-ray emission, which is most likely coming from the companion star. This magnitude 9.60[2] component is a possible pre-main sequence star with a mass similar to the Sun. It is radiating 76% of the Sun's luminosity at an effective temperature of 6,370 K.[7]

References

Template:Reflist

External links

Template:Stars of Boötes

  1. ↑ a b c d e f g Cite error: Invalid <ref> tag; no text was provided for refs named GaiaDR3A
  2. ↑ a b c d e f Cite error: Invalid <ref> tag; no text was provided for refs named mnras389_2_869
  3. ↑ a b c d e f g Cite error: Invalid <ref> tag; no text was provided for refs named GaiaDR3B
  4. ↑ a b c d Cite error: Invalid <ref> tag; no text was provided for refs named aaa463_2_671
  5. ↑ a b c Cite error: Invalid <ref> tag; no text was provided for refs named aj82_431
  6. ↑ a b Cite error: Invalid <ref> tag; no text was provided for refs named rgcrv
  7. ↑ a b c d e f g h i j k l m Cite error: Invalid <ref> tag; no text was provided for refs named aaa372_152
  8. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named Simbad
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