LP Aquarii

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LP Aquarii
LPAqrLightCurve.png
A light curve for LP Aquarii, plotted from Hipparcos data [1]
Observation data
Epoch J2000       Equinox J2000
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  mas/yr [2]
Dec.: −49.636  mas/yr [2]
Parallax (π)3.6849 ± 0.1178  mas [2]
Distance 890 ± 30  ly
(271 ± 9  pc)
Absolute magnitude  (MV)−0.307 [6]
Details
Mass 1.558 [7]   M
Radius 83+15
−11
[8]   R
Luminosity 1,011±66 [8]   L
Surface gravity (log g)0.476 [9]   cgs
Temperature 3,582+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
SIMBAD data

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]

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References

  1. "/ftp/cats/more/HIP/cdroms/cats". Centre de Données astronomiques de Strasbourg. Strasbourg astronomical Data Center. Retrieved 15 October 2022.
  2. 1 2 3 4 5 6 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv: 2208.00211 . Bibcode:2023A&A...674A...1G. doi: 10.1051/0004-6361/202243940 . S2CID   244398875. Gaia DR3 record for this source at VizieR.
  3. 1 2 Watson, Christopher (4 January 2010). "LP Aquarii". AAVSO Website. American Association of Variable Star Observers . Retrieved 20 July 2014.
  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.; Durlevich, O. V.; 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. arXiv: 1607.00557 . Bibcode:2011AstL...37..707G. doi:10.1134/S1063773711090040. S2CID   119272127.
  7. 1 2 Huber, Daniel; Bryson, Stephen T.; Haas, Michael R.; Barclay, Thomas; Barentsen, Geert; Howell, Steve B.; Sharma, Sanjib; Stello, Dennis; Thompson, Susan E. (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. arXiv: 1512.02643 . Bibcode:2016ApJS..224....2H. doi: 10.3847/0067-0049/224/1/2 . S2CID   118621218.
  8. 1 2 3 Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics . 616. A1. arXiv: 1804.09365 . Bibcode: 2018A&A...616A...1G . doi: 10.1051/0004-6361/201833051 . 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. arXiv: 1706.02208 . Bibcode:2017MNRAS.471..770M. doi: 10.1093/mnras/stx1433 . S2CID   73594365.
  10. "LP Aqr". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2021-11-24.
  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" (PDF). Information Bulletin on Variable Stars. 4659. Bibcode:1999IBVS.4659....1K . Retrieved 10 October 2024.