HD 30453
Binary star in the constellation Auriga
title: "HD 30453" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["am-stars", "spectroscopic-binaries", "auriga", "durchmusterung-objects", "henry-draper-catalogue-objects", "hipparcos-objects", "bright-star-catalogue-objects"] description: "Binary star in the constellation Auriga" topic_path: "science/astronomy" source: "https://en.wikipedia.org/wiki/HD_30453" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::summary Binary star in the constellation Auriga ::
| epoch = J2000 | constell = Auriga | ra = | dec = | appmag_v = 5.86 | class = A8m or Am(A7/F0/F2) | b-v = +0.24 | u-b = +0.14 | variable = | radial_v = | prop_mo_ra = +18.324 | prop_mo_dec = −34.866 | pm_footnote = | parallax = 9.7628 | p_error = 0.1172 | parallax_footnote = | absmag_v = 1.23 | reference = | period_unitless = | axis_unitless = | eccentricity = 0.0 (adopted) | periastron = | k1 = | k2 = | mass = | radius = | luminosity = | temperature = | metal = | gravity = | rotational_velocity = | age_myr = | names = | Simbad = HD+30453
HD 30453 is a binary star system in the northern constellation of Auriga. It is visible to the naked eye with an apparent visual magnitude of 5.86. The system is located at a distance of approximately 334 light years from the Sun based on parallax. It is drifting further away from the Sun with a radial velocity of 16.65 km/s.
This is a double-lined spectroscopic binary system with an essentially circular orbit and a period of one week. The primary component is a chemically peculiar star of type CP1, or Am star, with a stellar classification of A8m. Abt and Morrell (1995) classed it as Am(A7/F0/F2), indicating it has the hydrogen lines of an A7 star, the calcium K line of a cooler F0 star, and the metallic lines of an F2 class. It has been mentioned as a potential variable star. The star has 3.6 times the girth of the Sun and is radiating 38 times the Sun's luminosity from its photosphere at an effective temperature of 7568 K. It has a moderate rotation rate, with a projected rotational velocity of around 16 km/s.
A third component was detected in 1987 using speckle interferometry at an angular separation of .
References
| display-authors=1 | last1=Fekel | first1=Francis C. | last2=Tomkin | first2=Jocelyn | last3=Williamson | first3=Michael H. | title=New Precision Orbits of Bright Double-lined Spectroscopic Binaries. VIII. HR 1528, HR 6993, 2 Sagittae, and 18 Vulpeculae | journal=The Astronomical Journal | volume=146 | issue=5 | id=129 | pages=20 | date=November 2013 | doi=10.1088/0004-6256/146/5/129 | bibcode=2013AJ....146..129F | hdl=2152/34407 | url=https://repositories.lib.utexas.edu/bitstream/2152/34409/1/newprecisionorbits.pdf | access-date=2019-12-15 | postscript=. | doi-access=free }}
| display-authors=1 | last1=Mendoza | first1=E. E. | last2=Gomez | first2=V. T. | last3=Gonzalez | first3=S. | title=UBVRI photometry of 225 AM stars | journal=Astronomical Journal | postscript=. | volume=83 |date=June 1978 | pages=606–614 | doi=10.1086/112242 | bibcode=1978AJ.....83..606M | doi-access=free }}
| last1=Cowley | first1=A. | last2=Cowley | first2=C. | last3=Jaschek | first3=M. | last4=Jaschek | first4=C. | title=A study of the bright A stars. I. A catalogue of spectral classifications | display-authors=1 | journal=Astronomical Journal | volume=74 | pages=375–406 | date=April 1969 | doi=10.1086/110819 | bibcode=1969AJ.....74..375C }}
| last1=Abt | first1=Helmut A. | last2=Morrell | first2=Nidia I. | title=The Relation between Rotational Velocities and Spectral Peculiarities among A-Type Stars | journal=Astrophysical Journal Supplement | volume=99 | pages=135 | year=1995 | postscript=. | doi=10.1086/192182 | bibcode=1995ApJS...99..135A | doi-access=free }}
| title=A photometric study of chemically peculiar stars with the STEREO satellites - II. Non-magnetic chemically peculiar stars | last1=Paunzen | first1=E. | last2=Wraight | first2=K. T. | last3=Fossati | first3=L. | last4=Netopil | first4=M. | last5=White | first5=G. J. | last6=Bewsher | first6=D. | journal=Monthly Notices of the Royal Astronomical Society | volume=429 | issue=1 | pages=119–125 | date=February 2013 | doi=10.1093/mnras/sts318 | doi-access=free | bibcode=2013MNRAS.429..119P | arxiv=1211.1535 | postscript=. }}
| last1=Eggleton | first1=P. P. | last2=Tokovinin | first2=A. A. | title=A catalogue of multiplicity among bright stellar systems | journal=Monthly Notices of the Royal Astronomical Society | volume=389 | issue=2 | pages=869–879 | date=September 2008 | doi=10.1111/j.1365-2966.2008.13596.x | doi-access=free | postscript=. | bibcode=2008MNRAS.389..869E | arxiv=0806.2878 | s2cid=14878976 }}
| last1=Adelman | first1=Saul J. | title=On the HIPPARCOS photometry of chemically peculiar B, A, and F stars | journal=Astronomy and Astrophysics Supplement Series | volume=132 | pages=93–97 | year=1998 | postscript=. | bibcode=1998A&AS..132...93A | doi=10.1051/aas:1998361 | doi-access=free }}
| 22407 | mode=cs2 | postscript=.}}
References
- "HD 30453".
- {{Cite Gaia DR2. 161175622809301120
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