HD 135530

In this article, we will explore the various facets of HD 135530, a topic that has captured the curiosity and interest of numerous people over time. From its impact on modern society to its relevance in history, HD 135530 has played a fundamental role in different aspects of our lives. Through an exhaustive analysis, we will delve into the nuances and dimensions of HD 135530, exposing its importance and influence in different areas. Likewise, we will examine the different perspectives that exist around HD 135530, thus allowing a broader and more complete understanding of this very relevant topic.

HD 135530

A light curve for HD 135530, plotted from data published by Burggraaff et al. (2018)[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Boötes[2]
Right ascension 15h 14m 10.31472s[3]
Declination +42° 10′ 17.0573″[3]
Apparent magnitude (V) 6.13 – 6.15[4]
Characteristics
Evolutionary stage AGB[5]
Spectral type M2IIIa[6]
B−V color index +1.62[7]
Variable type unclassified[8]
Astrometry
Radial velocity (Rv)−4.42±0.21[9] km/s
Proper motion (μ) RA: 20.065[3] mas/yr
Dec.: −14.631[3] mas/yr
Parallax (π)3.1796±0.0484 mas[3]
Distance1,030 ± 20 ly
(315 ± 5 pc)
Absolute magnitude (MV)−1.68[2]
Details
Mass1.2[10] M☉
Radius79[11] R☉
Luminosity1,204[11] L☉
Surface gravity (log g)0.56[10] cgs
Temperature3,820[11] K
Metallicity −0.17[10] dex
Other designations
NSV 20281, BD+42°2577, HD 135530, HIP 74571, HR 5677, SAO 45445
Database references
SIMBADdata

HD 135530 is a variable star in the northern constellation of Boötes. With an average apparent magnitude of 6.14,[8] it is very faintly visible to the naked eye under excellent observing conditions.

Although listed only as a suspected variable in the General Catalogue of Variable Stars, observations by the MASCARA team have have shown that its brightness is in fact variable, with a period of about 20 days.[1]

References

  1. ^ a b Burggraaff, O.; Talens, G. J. J.; Spronck, J.; Lesage, A. L.; Stuik, R.; Otten, G. P. P. L.; Van Eylen, V.; Pollacco, D.; Snellen, I. A. G. (September 2018). "Studying bright variable stars with the Multi-site All-Sky CAmeRA (MASCARA)". Astronomy and Astrophysics. 617: A32. arXiv:1806.02247. Bibcode:2018A&A...617A..32B. doi:10.1051/0004-6361/201833142.
  2. ^ a b Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. S2CID 119257644.
  3. ^ 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.
  4. ^ Samus, N. N.; et al. (2017). "General Catalogue of Variable Stars". Astronomy Reports. 5.1. 61 (1): 80–88. Bibcode:2017ARep...61...80S. doi:10.1134/S1063772917010085. S2CID 125853869.
  5. ^ Eggen, Olin J. (1992). "Asymptotic Giant Branch Stars Near the Sun". The Astronomical Journal. 104: 275. Bibcode:1992AJ....104..275E. doi:10.1086/116239.
  6. ^ Hoffleit, D.; Warren Jr, W. H. (1991). Bright Star Catalogue (5th Revised (Preliminary Version) ed.). Astronomical Data Center, NSSDC/ADC. Retrieved 2015-08-17.
  7. ^ Mermilliod, J.-C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV Data. SIMBAD. Bibcode:1986EgUBV........0M.
  8. ^ a b "NSV 20281". The International Variable Star Index. AAVSO. Retrieved 21 April 2025.
  9. ^ Famaey, B.; et al. (2005). "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters". Astronomy and Astrophysics. 430: 165–186. arXiv:astro-ph/0409579. Bibcode:2005A&A...430..165F. doi:10.1051/0004-6361:20041272. S2CID 17804304.
  10. ^ a b c Anders, F.; Khalatyan, A.; Chiappini, C.; Queiroz, A. B.; Santiago, B. X.; Jordi, C.; Girardi, L.; Brown, A. G. A.; Matijevič, G.; Monari, G.; Cantat-Gaudin, T.; Weiler, M.; Khan, S.; Miglio, A.; Carrillo, I.; Romero-Gómez, M.; Minchev, I.; De Jong, R. S.; Antoja, T.; Ramos, P.; Steinmetz, M.; Enke, H. (2019). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18". Astronomy and Astrophysics. 628: A94. arXiv:1904.11302. Bibcode:2019A&A...628A..94A. doi:10.1051/0004-6361/201935765. S2CID 131780028.
  11. ^ 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.


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