Astronomy:107 Aquarii

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Short description: Star in the constellation Aquarius
107 Aquarii
Observation data
Equinox J2000.0]] (ICRS)
Constellation Aquarius
Right ascension  23h 46m 00.92254s[1]
Declination –18° 40′ 42.0313″[1]
Apparent magnitude (V) +5.305[2] (5.72/6.72)[3]
Characteristics
Spectral type F2 III + F2 V[3]
U−B color index +0.141[2]
B−V color index +0.287[2]
Astrometry
Radial velocity (Rv)–0.70[4] km/s
Absolute magnitude (MV)+0.97[4]
A
Proper motion (μ) RA: +132.908[5] mas/yr
Dec.: +16.011[5] mas/yr
Parallax (π)16.1378 ± 0.2169[5] mas
Distance202 ± 3 ly
(62.0 ± 0.8 pc)
B
Proper motion (μ) RA: +139.256[6] mas/yr
Dec.: +10.050[6] mas/yr
Parallax (π)20.0193 ± 0.3991[6] mas
Distance163 ± 3 ly
(50.0 ± 1.0 pc)
Details
A
Radius2.43[5] R☉
Luminosity16.647[5] L☉
Temperature7,482[5] K
Rotational velocity (v sin i)70[7] km/s
B
Radius1.47[6] R☉
Luminosity4.421[6] L☉
Temperature6,889[6] K
Other designations
BD–19 6506, HD 223024, HIP 117218, HR 9002, SAO 165867, WDS J23460-1841[8]
Database references
SIMBADdata

107 Aquarii (abbreviated 107 Aqr) is a double star in the equatorial constellation of Aquarius. 107 Aquarii is the Flamsteed designation, although it also bears the Bayer designation i2 Aquarii. The pair have an angular separation of 6.787 arcseconds.[3] They have a combined apparent visual magnitude of +5.305,[2] with individual magnitudes of 5.72 and 6.72.[3] The annual parallax shift measured for the two components is 16.1 mas and 20.0 mas respectively, although with significant statistical margins of error and flags for potential unreliability of both values. This indicates the system may be at a distance of 160–200 light-years (49–61 parsecs) from Earth.

References

  1. ↑ 1.0 1.1 van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, doi:10.1051/0004-6361:20078357, Bibcode: 2007A&A...474..653V. 
  2. ↑ 2.0 2.1 2.2 2.3 Rakos, K. D. et al. (February 1982), "Photometric and astrometric observations of close visual binaries", Astronomy and Astrophysics Supplement Series 47: 221–235, Bibcode: 1982A&AS...47..221R 
  3. ↑ 3.0 3.1 3.2 3.3 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, doi:10.1111/j.1365-2966.2008.13596.x, Bibcode: 2008MNRAS.389..869E. 
  4. ↑ 4.0 4.1 Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters 38 (5): 331, doi:10.1134/S1063773712050015, Bibcode: 2012AstL...38..331A 
  5. ↑ 5.0 5.1 5.2 5.3 5.4 5.5 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.
  6. ↑ 6.0 6.1 6.2 6.3 6.4 6.5 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.
  7. ↑ Royer, F.; Zorec, J.; Gómez, A. E. (February 2007), "Rotational velocities of A-type stars. III. Velocity distributions", Astronomy and Astrophysics 463 (2): 671–682, doi:10.1051/0004-6361:20065224, Bibcode: 2007A&A...463..671R. 
  8. ↑ "* i02 Aqr". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=%2A+i02+Aqr. 

External links



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