LP Aquarii

LP Aquarii
	; A light curve for LP Aquarii, plotted from Hipparcos data
Observation data; Epoch J2000 Equinox J2000
Constellation	Aquarius
Right ascension	22h 42m 06.026s
Declination	−05° 06′ 07.03″
Apparent magnitude (V)	6.30 - 6.64
Characteristics
Spectral type	M4III
Variable type	Lb
Astrometry
Radial velocity (Rv)	−175.81 km/s
Proper motion (μ)	RA: 69.323 mas/yr ; Dec.: −49.636 mas/yr
Parallax (π)	3.6849 ± 0.1178 mas
Distance	890 ± 30 ly ; (271 ± 9 pc)
Absolute magnitude (MV)	−0.307
Details
Mass	1.558 M☉
Radius	83 15; −11 R☉
Luminosity	1,011±66 L☉
Surface gravity (log g)	0.476 cgs
Temperature	3,582 254; −278 K
Metallicity [Fe/H]	−0.045 dex
Other designations
	LP Aqr, BD−05°5843, HD 214983, HIP 112078, SAO 146251, CCDM J22421-0507A
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]

References

^ "/ftp/cats/more/HIP/cdroms/cats". Centre de Données astronomiques de Strasbourg. Strasbourg astronomical Data Center. Retrieved 15 October 2022.
^ ^a ^b ^c ^d ^e 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.
^ ^a ^b Watson, Christopher (4 January 2010). "LP Aquarii". AAVSO Website. American Association of Variable Star Observers. Retrieved 20 July 2014.
^ Houk, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars". Michigan Spectral Survey. 5. Bibcode:1999MSS...C05....0H.
^ 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.
^ 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.
^ ^a ^b 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.
^ ^a ^b ^c 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.
^ 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 73863365.
^ "LP Aqr". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-11-24.
^ 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.
^ 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.

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[CDS-1] "/ftp/cats/more/HIP/cdroms/cats". Centre de Données astronomiques de Strasbourg. Strasbourg astronomical Data Center. Retrieved 15 October 2022.

[GaiaDR3-2] 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.

[AAVSOLP-3] Watson, Christopher (4 January 2010). "LP Aquarii". AAVSO Website. American Association of Variable Star Observers. Retrieved 20 July 2014.

[Houk_Swift_1999-4] Houk, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars". Michigan Spectral Survey. 5. Bibcode:1999MSS...C05....0H.

[gcvs-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.

[gontcharov2011-6] 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.

[huber2016-7] 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.

[GaiaDR2-8] 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.

[mcdonald2017-9] 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 73863365.

[SIMBAD-10] "LP Aqr". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-11-24.

[Morbey_et_al_1978-11] 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.

[Kazarovets-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.

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Observation data Epoch J2000 Equinox J2000
A light curve for LP Aquarii, plotted from Hipparcos data^[1]
Constellation	Aquarius
Right ascension	22^h 42^m 06.026^s^[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 (R_v)	−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 (M_V)	−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