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    LP Aquarii

    Topic: Astronomy

     From Handwiki - Reading time: 2 min
    Short description: Star in the constellation Aquarius
    LP Aquarii
    Observation data
    Equinox J2000.0]] (ICRS)
    Constellation Aquarius
    Right ascension  22h 42m 06.025s[1]
    Declination −05° 06′ 07.04″[1]
    Apparent magnitude (V) 6.30 - 6.64[2]
    Characteristics
    Spectral type M4III[3]
    Variable type Lb[4]
    Astrometry
    Proper motion (μ) RA: 70.121[1] mas/yr
    Dec.: −48.945[1] mas/yr
    Parallax (π)4.1002 ± 0.2370[1] mas
    Distance800 ± 50 ly
    (240 ± 10 pc)
    Absolute magnitude (MV)−0.307[5]
    Details
    Mass1.558[6] M☉
    Radius83+15
    −11    [1] R☉
    Luminosity1,011±66[1] L☉
    Surface gravity (log g)0.476[7] cgs
    Temperature3,582+254
    −278    [1] K
    Metallicity [Fe/H]−0.045[6] dex
    Other designations
    LP Aqr, BD−05°5843, HD 214983, HIP 112078, SAO 146251, CCDM J22421-0507A[8]
    Database references
    SIMBADdata

    LP Aquarii is a pulsating variable star in the constellation of Aquarius that varies between magnitudes 6.30 and 6.64.[2] The position of the star near the ecliptic means it is subject to lunar occultations.[9]

    References

    1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 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. ↑ 2.0 2.1 Watson, Christopher (4 January 2010). "LP Aquarii". AAVSO Website. American Association of Variable Star Observers. https://www.aavso.org/vsx/index.php?view=detail.top&oid=1109. 
    3. ↑ Houk, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars". Michigan Spectral Survey 5. Bibcode: 1999MSS...C05....0H. 
    4. ↑ Samus, N. N. et al. (2009). "General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S 1. Bibcode: 2009yCat....102025S. 
    5. ↑ Gontcharov, G. A. (2011). "The red giant branch in the Tycho-2 catalogue". Astronomy Letters 37 (10): 707–717. doi:10.1134/S1063773711090040. Bibcode: 2011AstL...37..707G. 
    6. ↑ 6.0 6.1 Huber, Daniel; Bryson, Stephen T.; Haas, Michael R.; Barclay, Thomas; Barentsen, Geert; Howell, Steve B.; Sharma, Sanjib; Stello, Dennis et al. (2016). "The K2 Ecliptic Plane Input Catalog (Epic) and Stellar Classifications of 138,600 Targets in Campaigns 1–8". The Astrophysical Journal Supplement Series 224 (1): 2. doi:10.3847/0067-0049/224/1/2. Bibcode: 2016ApJS..224....2H. 
    7. ↑ McDonald, I.; Zijlstra, A. A.; Watson, R. A. (2017). "Fundamental parameters and infrared excesses of Tycho-Gaia stars". Monthly Notices of the Royal Astronomical Society 471 (1): 770. doi:10.1093/mnras/stx1433. Bibcode: 2017MNRAS.471..770M. 
    8. ↑ "LP Aqr". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=LP+Aqr. 
    9. ↑ Morbey, C. L. et al. (December 1978). "Photoelectric Observations of Lunar Occultations at the D.A.O.". Journal of the Royal Astronomical Society of Canada 72: 305. Bibcode: 1978JRASC..72..305M. 




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