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]

Related Research Articles

Rho<sup>1</sup> Sagittarii A-type subgiant star in the constellation Sagittarius

Rho1 Sagittarii, Latinized from ρ1 Sagittarii, is a single, variable star in the southern constellation of Sagittarius. It has a white hue and is visible to the naked eye with an apparent visual magnitude that fluctuates around 3.93. The distance to this star is approximately 127 light years based on parallax, and it is drifting further away with a radial velocity of +1.2 km/s. It is positioned near the ecliptic and so it can be occulted by the Moon.

<span class="mw-page-title-main">Chi Aquarii</span> Red giant star in the constellation Aquarius

Chi Aquarii, Latinized from χ Aquarii, is the Bayer designation of a star in the equatorial constellation of Aquarius. The distance to this star, based upon parallax measurements with a 7% margin of error, is roughly 610 light-years. It is visible to the naked eye with an apparent visual magnitude of +5.06.

<span class="mw-page-title-main">3 Aquarii</span> Red giant star in the constellation Aquarius

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74 Aquarii is a triple star system in the constellation of Aquarius. 74 Aquarii is its Flamsteed designation and it also bears the variable star designation HI Aquarii. The combined apparent visual magnitude is 5.8, although it is very slightly variable, and it is located at a distance of 590 light-years from Earth.

<span class="mw-page-title-main">49 Cancri</span> Star in the constellation Cancer

49 Cancri is a single star in the zodiac constellation of Cancer, located 516 light years away from the Sun. It has the Bayer designation b Cancri; 49 Cancri is the Flamsteed designation. It is visible to the naked eye as a faint star with an apparent visual magnitude of about 5.6. It is moving away from the Earth with a heliocentric radial velocity of +27.5 km/s.

53 Cancri is a variable star in the zodiac constellation Cancer, located around 960 light years from the Sun. It has the variable star designation BO Cancri; 53 Cancri is the Flamsteed designation. This object is a challenge to view with the naked eye, having an apparent visual magnitude around 6. It is around 960 light years away.

<span class="mw-page-title-main">V Aquilae</span> Carbon star in the constellation Aquila

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HD 1606 is a single star in the northern constellation of Andromeda, positioned a few degrees to the northeast of the bright star Alpheratz. It has a blue-white hue and is dimly visible to the naked eye with an apparent visual magnitude of 5.87. Although it is suspected of variability, none has been conclusively found. The star is located at a distance of approximately 580 light-years from the Sun based on parallax, and is drifting further away with a radial velocity of +4 km/s. It has an absolute magnitude of −0.5.

<span class="mw-page-title-main">14 Aquarii</span> Star in the constellation Aquarius

14 Aquarii is red giant star. 14 Aquarii is the Flamsteed designation; it also bears the variable star designation IW Aquarii. It is a semiregular variable with an amplitude of a tenth of a magnitude, and shows variations on a timescale of just one day.

<span class="mw-page-title-main">HD 155035</span> Star in the constellation Ara

HD 155035 is the Henry Draper Catalogue designation for a star in the constellation Ara, the Altar. It is located at a distance of approximately 1,450 light-years from Earth and has an apparent visual magnitude of 5.92, making it is faintly visible to the naked eye. This is a red giant star with a stellar classification of M1.5 III. It an irregular variable that changes brightness over an amplitude range of 0.12 magnitudes.

<span class="mw-page-title-main">PU Aurigae</span> Irregular variable red giant Ssar in the constellation Auriga

PU Aurigae is an irregular variable star located in the constellation Auriga. A red giant, it varies by 0.1 magnitude around magnitude 5.64. Located around 560 light-years distant, it shines with a luminosity approximately 1,523 times that of the Sun and has a surface temperature of 3,482 K.

HD 27245 is a solitary star in the northern circumpolar constellation Camelopardalis. It has an apparent magnitude of 5.52, making it faintly visible to the naked eye. Parallax measurements place it approximately 607 light years away from it the Solar System; it is drifting further away with a heliocentric radial velocity of 25.16 km/s.

Delta<sup>2</sup> Gruis Variable star in the constellation Grus

Delta2 Gruis, Latinized from δ2 Gruis, is a solitary, red-hued star in the southern constellation of Grus. It is visible to the naked eye with an apparent visual magnitude of about 4. Based upon an annual parallax shift of 9.88 mas as seen from the Earth, the star is located around 330 light years from the Sun. It is moving further away from the Sun with a radial velocity of +3 km/s.

106 Herculis is a variable star in the northern constellation Hercules. It is visible to the naked eye as a faint, red-hued point of light with a baseline apparent visual magnitude of 4.96. Based on its parallax, it is estimated to lie 383 light-years away from the Sun. The star is moving closer to the Earth with a heliocentric radial velocity of -35 km/s.

<span class="mw-page-title-main">WR 24</span> Wolf-Rayet star in the constellation Carina

WR 24 is a Wolf-Rayet star in the constellation Carina. It is one of the most luminous stars known. At the edge of naked eye visibility it is also one of the brightest Wolf Rayet stars in the sky.

<span class="mw-page-title-main">17 Persei</span> Orange-hued giant star in the constellation Perseus

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<span class="mw-page-title-main">V1073 Scorpii</span> Variable star in the constellation Scorpius

V1073 Scorpii is a variable star in the constellation Scorpius. It has a non-Greek Bayer designation of k Scorpii. The star has a blue-white hue and is visible to the naked eye with an apparent visual magnitude that fluctuates around +4.87. Parallax measurements yield a distance estimate of approximately 2,920 ly (896 pc) from the Sun, and it is drifting further away with a radial velocity of +7 km/s. It has an absolute magnitude of −6.8

η2 Pictoris, Latinised as Eta2 Pictoris, is a solitary star in the southern constellation of Pictor. It is visible to the naked eye as a dim, orange-hued star with an apparent visual magnitude of 5.02. With an annual parallax shift of 7.8 mas as seen from the Earth, it is located around 418 light years from the Sun. It is a member of the HR 1614 moving group of stars that share a common motion through space.

<span class="mw-page-title-main">RX Telescopii</span> Red supergiant star in the constellation Telescopium

RX Telescopii is an irregular variable star in the constellation Telescopium. It has a maximum magnitude of 6.45 and a minimum magnitude 7.47. It is a red supergiant with a spectral type of M3Iab, indicating the star is an intermediate-size luminous supergiant star.

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) (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics . arXiv: 2208.00211 . doi: 10.1051/0004-6361/202243940 . 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.