| 词条 | HD 210434 |
| 释义 |
| name=HD 210434 }}{{Starbox observe | epoch=J2000 | ra={{RA|22|10|33.74601}} | dec={{DEC|−04|16|00.6776}} | appmag_v=5.979[3] | constell=Aquarius }}{{Starbox character | class=KG8/0III[4] | b-v=0.981[4] | u-b=0.84[6] | variable= }}{{Starbox astrometry | radial_v=−18.1[7] | prop_mo_ra=+71.82 | prop_mo_dec=+3.74 | parallax=9.81 | p_error=0.44 | parallax_footnote= | absmag_v=1.30[4] }}{{Starbox detail | mass=2.4[4] | radius= | luminosity= | temperature=4,928[4][3] | gravity=3.0[4][3] | metal_fe={{val|0.090|0.090}}[4][3] | rotational_velocity=3.3[4] | age_myr=630[4] }}{{Starbox catalog | names=BD-04° 5625, HD 210434, HIP 109466, HR 8453, SAO 145916. }}{{Starbox reference | Simbad=HD+210434 }}{{Starbox end}}HD 210434 is a subgiant star[4] in the equatorial constellation of Aquarius. According to the Bortle scale, an apparent magnitude of six means this star is faintly visible to the naked eye from dark rural skies. It is an estimated 630 million years old with 2.4 times the mass of the Sun.[4] References1. ^1 2 3 4 5 6 7 8 9 10 11 {{citation | display-authors=1 | last1=Randich | first1=S. | last2=Gratton | first2=R. | last3=Pallavicini | first3=R. | last4=Pasquini | first4=L. | last5=Carretta | first5=E. | title=Lithium in population I subgiants | journal=Astronomy and Astrophysics | volume=348 | pages=487–500 | date=August 1999 | bibcode=1999A&A...348..487R}} [1][2][3][4]2. ^1 {{citation | last=Wilson | first=R. E. | year=1953 | title=General Catalogue of Stellar Radial Velocities | publisher=Carnegie Institute of Washington D.C. | bibcode=1953GCRV..C......0W}} 3. ^1 {{citation | last1=Mermilliod | first1=J.-C. | title=Compilation of Eggen's UBV data, transformed to UBV (unpublished) | journal=Catalogue of Eggen's UBV data. SIMBAD | date=1986 | bibcode=1986EgUBV........0M}} 4. ^1 2 3 4 {{citation | display-authors=1 | last1=Soubiran | first1=C. | last2=Le Campion | first2=J.-F. | last3=Cayrel de Strobel | first3=G. | last4=Caillo | first4=A. | title=The PASTEL catalogue of stellar parameters | journal=Astronomy and Astrophysics | volume=515 | page=A111 | date=June 2010 | doi=10.1051/0004-6361/201014247 | bibcode=2010A&A...515A.111S | arxiv=1004.1069}} }} External links
6 : Aquarius (constellation)|Henry Draper Catalogue objects|K-type subgiants|HR objects|Hipparcos objects|Durchmusterung objects |
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