Astronomy:LP Aquarii

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Short description: Star in the constellation Aquarius
LP Aquarii
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A light curve for LP Aquarii, plotted from Hipparcos data[1]
Observation data
Equinox J2000.0]] (ICRS)
Constellation Aquarius
Right ascension  22h 42m 06.026s[2]
Declination −05° 06′ 07.03″[2]
Apparent magnitude (V) 6.30 - 6.64[3]
Characteristics
Spectral type M4III[4]
Variable type Lb[5]
Astrometry
Radial velocity (Rv)−175.81[2] km/s
Proper motion (μ) RA: +69.323[2] mas/yr
Dec.: −49.636[2] mas/yr
Parallax (π)3.6849 ± 0.1178[2] mas
Distance890 ± 30 ly
(271 ± 9 pc)
Absolute magnitude (MV)−0.307[6]
Details
Mass1.558[7] M☉
Radius83+15
−11[8] R☉
Luminosity1,011±66[8] L☉
Surface gravity (log g)0.476[9] cgs
Temperature3,582+254
−278[8] K
Metallicity [Fe/H]−0.045[7] dex
Other designations
LP Aqr, BD−05°5843, HD 214983, HIP 112078, SAO 146251, CCDM J22421-0507A[10]
Database references
SIMBADdata

LP Aquarii is a pulsating variable star in the constellation of Aquarius that varies between magnitudes 6.30 and 6.64.[3] The position of the star near the ecliptic means it is subject to lunar occultations.[11]

The star's variability was first detected in the Hipparcos satellite data, and it was given its variable star designation in 1999.[12]

References

  1. ↑ "/ftp/cats/more/HIP/cdroms/cats". Strasbourg astronomical Data Center. https://cdsarc.cds.unistra.fr/viz-bin/ftp-index?/ftp/cats/more/HIP/cdroms/cats. 
  2. ↑ 2.0 2.1 2.2 2.3 2.4 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940  Gaia DR3 record for this source at VizieR.
  3. ↑ 3.0 3.1 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. 
  4. ↑ Houk, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars". Michigan Spectral Survey 5. Bibcode: 1999MSS...C05....0H. 
  5. ↑ 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. 
  6. ↑ 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. 
  7. ↑ 7.0 7.1 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. 
  8. ↑ 8.0 8.1 8.2 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.
  9. ↑ 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. 
  10. ↑ "LP Aqr". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=LP+Aqr. 
  11. ↑ 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. 
  12. ↑ Kazarovets, E. V.; Samus, N. N.; Durlevich, O. V.; Frolov, M. S.; Antipin, S. V.; Kireeva, N. N.; Pastukhova, E. N. (January 1999). "The 74th Special Name-list of Variable Stars". Information Bulletin on Variable Stars 4659: 1. Bibcode: 1999IBVS.4659....1K. https://ibvs.konkoly.hu/pub/ibvs/4601/4659.pdf. Retrieved 10 October 2024. 




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