Star in the constellation Camelopardalis
HD 30442 (HR 1527 ) is a solitary[ 12] star in the northerncircumpolar constellation Camelopardalis . It is faintly visible to thenaked eye with anapparent magnitude of 5.47[ 3] light years away from theSolar System .[ 2] radial velocity ofkm/s [ 7]
HD 30442 has astellar classification of M3 IIIab,[ 5] red giant . It is anasymptotic giant branch [ 4] hydrogen andhelium shells around an inertcarbon core . It has 109% themass of the Sun [ 8] radius ofR ☉ [ 9] luminosity of the Sun from itsphotosphere at aneffective temperature ofK [ 10] metallicity ,[ 8] iron equivalent to that of theSun .
HD 30442 has a companion″ position angle of° [ 13] proper motion with HD 30442, suggesting physical relation, but itsparallax indicates otherwise.[ 14]
^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 . XHIP record for this object atVizieR .^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 atVizieR .^a b Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars".Astronomy and Astrophysics .355 :L27– L30.Bibcode :2000A&A...355L..27H .ISSN 0004-6361 . ^a b Eggen, Olin J. (July 1992). "Asymptotic giant branch stars near the sun".The Astronomical Journal .104 : 275.Bibcode :1992AJ....104..275E .doi :10.1086/116239 .ISSN 0004-6256 . ^a b Yamashita, Y. (1967). "MK Spectral Types of Bright M-Type Stars".Publications of the Dominion Astrophysical Observatory Victoria .13 : 44.Bibcode :1967PDAO...13...47Y .ISSN 0078-6950 . ^a b Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)",Catalogue of Eggen's UBV Data. SIMBAD ,Bibcode :1986EgUBV........0M ^a b Famaey, B.; Jorissen, A.; Luri, X.; Mayor, M.; Udry, S.; Dejonghe, H.; Turon, C. (January 2005)."Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters" .Astronomy and Astrophysics .430 : 165.arXiv :astro-ph/0409579 Bibcode :2005A&A...430..165F .doi :10.1051/0004-6361:20041272 S2CID 17804304 . ^a b c d Anders, F.; et al. (August 2019)."Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18" .Astronomy & Astrophysics .628 : A94.arXiv :1904.11302 Bibcode :2019A&A...628A..94A .doi :10.1051/0004-6361/201935765 ISSN 0004-6361 . ^a b Kervella, Pierre; Arenou, Frédéric; Thévenin, Frédéric (2022)."Stellar and substellar companions fromGaia EDR3" .Astronomy & Astrophysics .657 : A7.arXiv :2109.10912 Bibcode :2022A&A...657A...7K .doi :10.1051/0004-6361/202142146 eISSN 1432-0746 .ISSN 0004-6361 . ^a b c d Charbonnel, C.; Lagarde, N.; Jasniewicz, G.; North, P. L.; Shetrone, M.; Krugler Hollek, J.; Smith, V. V.; Smiljanic, R.; Palacios, A.; Ottoni, G. (January 2020)."Lithium in red giant stars: Constraining non-standard mixing with large surveys in theGaia era" .Astronomy & Astrophysics .633 : A34.arXiv :1910.12732 Bibcode :2020A&A...633A..34C .doi :10.1051/0004-6361/201936360 eISSN 1432-0746 .ISSN 0004-6361 . ^ "HD 30442" .SIMBAD Centre de données astronomiques de Strasbourg . RetrievedJune 22, 2022 .^ Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems",Monthly Notices of the Royal Astronomical Society 389 (2):869– 879,arXiv :0806.2878 Bibcode :2008MNRAS.389..869E ,doi :10.1111/j.1365-2966.2008.13596.x S2CID 14878976 ^ Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. (December 2001)."The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog" .The Astronomical Journal .122 (6):3466– 3471.Bibcode :2001AJ....122.3466M .doi :10.1086/323920 ISSN 0004-6256 . ^ 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 atVizieR .
