| 释义 |
- References
{{starbox begin
|name= 78 Ursae Majoris
}}{{starbox observe
| epoch = J2000
|constell= Ursa Major
|ra= {{RA|13|00|43.69949}}
|dec= {{DEC|+56|21|58.8102}}
|appmag_v=4.93[3] (5.02 / 7.88)[4]
}}{{starbox character
|type= F2V[5]
|b-v=+0.34[6]
|u-b=+0.00[6]
}}{{Starbox astrometry
|radial_v={{Val|−9.8|0.9}}[8]
|prop_mo_ra=107.94
|prop_mo_dec=2.05
|parallax=39.30
|p_error=0.38
|parallax_footnote=
|absmag_v=+2.84[12]
}}{{Starbox orbit
|reference=[13]
|period={{Val|104.9|0.6}}
|axis={{Val|1.208|0.010}}
|inclination={{Val|46.9|0.9}}
|node={{Val|88.0|1.1}}
|periastron=B {{Val|1921.224|0.403}}
|eccentricity={{Val|0.388|0.009}}
|periarg={{Val|119.2|1.5}}
}}{{Starbox catalog
|names={{odlist|BD=+57° 1408|HD=113139|HIP=63503|HR=4931|SAO=28601}}[3]
}}{{starbox reference
|Simbad=78+UMa|sn=The system
|Simbad2=TYC+3845-1189-1|sn2=A
|Simbad3=TYC+3845-1189-2|sn3=B
}}{{starbox end}}78 Ursae Majoris (78 UMa) is a binary star in the constellation Ursa Major. Its combined apparent magnitude is 4.93.[3] Parallax estimates by Hipparcos put it at 83 light-years, or 25.4 parsecs, away.References1. ^1 {{citation | title=The Sirius Supercluster and Missing Mass near the Sun | last1=Eggen | first1=Olin J. | journal=The Astronomical Journal | postscript=. | volume=116 | issue=2 | pages=782–788 | date=August 1998 | doi=10.1086/300465 | bibcode=1998AJ....116..782E }}
2. ^1 2 3 {{cite simbad|title=* 78 UMa|accessdate=19 August 2017}}
3. ^1 {{cite journal|title=The Tycho double star catalogue|author1=Fabricius, C.|author2=Høg, E.|author3=Makarov, V. V.|author4=Mason, B. D.|author5=Wycoff, G. L.|author6=Urban, S. E.|journal=Astronomy and Astrophysics|volume=384|pages=180–189|date=2002|bibcode=2002A&A...384..180F|doi=10.1051/0004-6361:20011822}}
4. ^1 {{cite journal|bibcode=2003AJ....126.2048G|doi=10.1086/378365|arxiv=astro-ph/0308182|title=Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 Parsecs: The Northern Sample. I|journal=The Astronomical Journal|volume=126|issue=4|pages=2048|year=2003|last1=Gray|first1=R. O.|last2=Corbally|first2=C. J.|last3=Garrison|first3=R. F.|last4=McFadden|first4=M. T.|last5=Robinson|first5=P. E.}}
5. ^1 2 {{cite journal|author1=Mermilliod, J.-C.|title=Compilation of Eggen's UBV data, transformed to UBV (unpublished)|url=http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?1986EgUBV........0M&db_key=AST&nosetcookie=1|date=1986|bibcode= 1986EgUBV........0M}}
6. ^1 {{cite journal|title=General catalogue of stellar radial velocities|author=Wilson, Ralph Elmer|date=1953|bibcode=1953GCRV..C......0W}}
7. ^1 {{cite web|url=http://www.usno.navy.mil/USNO/astrometry/optical-IR-prod/wds/orb6|title=Sixth Catalog of Orbits of Visual Binary Stars|publisher=United States Naval Observatory|accessdate=19 August 2017}}
}}{{Stars of Ursa Major}}{{main-star-stub}}{{multi-star-stub}} 9 : F-type main-sequence stars|Binary stars|Ursa Major Moving Group|Ursa Major (constellation)|Durchmusterung objects|Flamsteed objects|Henry Draper Catalogue objects|Hipparcos objects|HR objects |