39 Boötis

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39 Boötis
Observation data
Epoch J2000      Equinox J2000
Constellation Boötes
Right ascension 14h 49m 41.29265s[1]
Declination +48° 43′ 14.9077″[1]
Apparent magnitude (V) 5.69[2]
Characteristics
Spectral type F8V+F7V[3]
B−V color index +0.475[2]
Astrometry
Radial velocity (Rv) −30.90 ± 0.3[4] km/s
Proper motion (μ) RA: −77.94[1] mas/yr
Dec.: 100.83[1] mas/yr
Parallax (π) 14.58 ± 0.51[1] mas
Distance 224 ± 8 ly
(69 ± 2 pc)
Absolute magnitude (MV) 2.53[5]
Details
Mass 1.43[5] M
Rotational velocity (v sin i) 161.0[5] km/s
Other designations
CCDM J14497+4843, HIP 72524, HR 5538, WDS J14497+4843, AG+48° 1158, HD 131041, SAO 45231, BD+49° 2326.
Database references
SIMBAD data

39 Boötis (abbreviated as 39 Boo) or ADS 9406 B is a star in the constellation Boötes. A multiple star system, it has a combined apparent magnitude of 5.68. The system is 224 ± 8 light-years distant. [1] It is composed of BD+49 2326A, which has an apparent magnitude of 6.248 and spectral type F8V, and BD+49 2326B, which has an apparent magnitude of 6.62 and spectral type F7V. Both stars are themselves spectroscopic binaries.[3]

References[edit]

  1. ^ a b c d e f van Leeuwen, F. (2007). "Validation of the New Hipparcos Reduction". Astronomy and Astrophysics. 474 (2): 653–64. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.
  2. ^ a b Haggkvist, L.; Oja, T. "Results of BV photometry 1969-70 (Uppsala refractor)". Private Communication. SIMBAD. Bibcode:1970Priv.........0H.
  3. ^ a b Abt, Helmut A. (2009). "MK Classifications of Spectroscopic Binaries". The Astrophysical Journal Supplement. 180 (1): 117–18. Bibcode:2009ApJS..180..117A. doi:10.1088/0067-0049/180/1/117.
  4. ^ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065.
  5. ^ a b c Pizzolato, N.; Maggio, A.; Sciortino, S. (September 2000), "Evolution of X-ray activity of 1-3 Msun late-type stars in early post-main-sequence phases", Astronomy and Astrophysics, 361: 614–628, Bibcode:2000A&A...361..614P

Components[edit]

NAME Right ascension Declination Apparent magnitude (V) Spectral type Database references
ADS 9406 A (BD+49 2326A) 14h 49m 41.5s +48° 43' 09 6.2 F5 Simbad
ADS 9406 C (CCDM J14497+4843B) 14h 49m 41.8s +48° 43' 11 6.7 F5 Simbad