HR 3082
{{Short description|Double star in the constellation Camelopardalis}}
{{Starbox begin
| name = HR 3082
}}
{{Starbox observe
| epoch = J2000
| constell = Camelopardalis
}}
{{Starbox character
| type =
| class = {{nowrap|A0p Si or B9.5 IVs}}
| variable =
}}
{{Starbox astrometry
| prop_mo_ra = {{val|−28.922|(74)}}
| prop_mo_dec = {{val|−50.085|(101)}}
| parallax = 9.5700
| p_error = 0.0876
| absmag_v = {{Val|0.32|0.12}}
}}
{{Starbox detail
| source =
| temperature = {{Val|10795|367|fmt=commas}}
| metal_fe =
}}
{{Starbox catalog
| names = {{odlist | BD=+79° 265 | FK5=2617 | HD=64486 | HIP=39538 | HR=2527 | SAO=6392 | WDS=J08048+7929AB }}
}}
{{Starbox reference
| Simbad = HR+3082
}}
{{Starbox end}}
HR 3082 is a double star in the northern circumpolar constellation of Camelopardalis. It is faintly visible to the naked eye with an apparent visual magnitude of 5.39. The system is moving closer to the Sun with a heliocentric radial velocity of +2.7 km/s. It is currently at a distance of around 341 light years, based upon an annual parallax shift of {{Val|9.57|ul=mas}}.
The brighter component is a magnetic, mild Ap star that displays an overabundance of silicon in its spectrum. Cowley et al. (1969) listed a stellar classification of A0p Si, while Abt and Morrell (1995) have it pegged as a subgiant star with a class of B9.5 IVs. It has an estimated 2.65 times the mass of the Sun and 2.89 times the Sun's radius. The star is radiating 74 times the Sun's luminosity from its photosphere at an effective temperature of 10,795 K.
The fainter component is a magnitude 9.6 star at an angular separation of {{Val|0.4|ul=arcsecond}} along a position angle (PA) of 84°, as of 2009. This is most likely a visual companion located along the same line of sight. There is a magnitude 13.6 visual companion at a separation of {{Val|6.4|u=arcsecond}} along a PA of 169°, as of 2016.
References
{{reflist|refs=
{{cite simbad | title=HD 49878 | access-date=2018-06-06 }}
{{Cite Gaia DR3|1139165175331616768}}
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| arxiv=1208.3048 | s2cid=59451347 | postscript=. }}
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| bibcode=2015ApJ...804..146D | doi=10.1088/0004-637X/804/2/146
| arxiv=1501.03154 | s2cid=33401607 | postscript=. }}
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| bibcode=2001AJ....122.3466M | doi=10.1086/323920 | doi-access=free }}
{{citation | display-authors=1
| 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
| 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
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| volume=99 | page=135 | date=July 1995 | postscript=.
| doi=10.1086/192182 | bibcode=1995ApJS...99..135A | doi-access=free }}
}}
{{Stars of Camelopardalis}}
{{DEFAULTSORT:HR 3082}}