78 Ursae Majoris
| Observation data J2000
| ||
|---|---|---|
| Constellation | Ursa Major
| |
| Right ascension | 13h 00m 43.69949s[1] | |
| Declination | +56° 21′ 58.8102″[1] | |
| Apparent magnitude (V) | 4.93[2] (5.02 + 7.88)[3] | |
| Characteristics | ||
| Evolutionary stage | main sequence | |
| Spectral type | F2V[4] + G6V[5] | |
| U−B color index | +0.00[6] | |
| B−V color index | +0.368±0.010[2] | |
| Absolute magnitude (MV) | +2.84[7] | |
Argument of periastron (ω)(secondary) | 119.2±1.5° | |
| Details | ||
| 78 UMa A | ||
Myr | ||
| Database references | ||
| SIMBAD | The system | |
| A | ||
| B | ||
78 Ursae Majoris is a
Ursa Major Moving Group.[14]
The binary nature of this system was announced by
inclined by 47°.[8]
The primary member, designated component A, has a magnitude of 5.02
The secondary, designated component B, has a visual magnitude of 7.88.[3] It is a G-type main-sequence star with a class of G6V.[5] The star is a suspected variable.[16]
References
- ^ S2CID 18759600.
- ^ S2CID 119257644.
- ^ .
- ^ S2CID 119417105.
- ^ doi:10.1086/111879.
- Bibcode:1986EgUBV........0M.
- doi:10.1086/300465.
- ^ , 65.
- ^ S2CID 33401607.
- ^ S2CID 221340982. A212.
- S2CID 119241004.
- ^ S2CID 53666672.
- ^ a b "* 78 UMa". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 19 August 2017.
- .
- ^ "Sixth Catalog of Orbits of Visual Binary Stars". United States Naval Observatory. Archived from the original on 1 August 2017. Retrieved 19 August 2017.
- Bibcode:1989A&AS...77..497B.
