18 Boötis
18 Boötis
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| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
Constellation | Boötes |
Right ascension | 14h 19m 16.2803s |
Declination | +13° 00′ 15.476″ |
Apparent magnitude (V) | 5.41[1] |
| Characteristics | |
Spectral type | F5 IV[1] |
| U−B color index | –0.03 |
| B−V color index | 0.385[1] |
| R−I color index | 0.19 |
| Astrometry | |
| Radial velocity (Rv) | -3 km/s |
| Proper motion (μ) | RA: +105.91 mas/yr Dec.: –32.22 mas/yr |
| Parallax (π) | 38.33 ± 0.81 mas |
| Distance | 85 ± 2 ly (26.1 ± 0.6 pc) |
| Details | |
| Age | 300[1] Myr |
| Other designations | |
BD+13 2782, FK5 1372, HD 125451, HIP 69989, HR 5365, SAO 100975. | |
| Database references | |
| SIMBAD | data |
18 Boötis is a star in the constellation Boötes about 85 light years away from Earth. Its apparent magnitude is 5.40. It is a subgiant of spectral type F5IV.
18 Boötis is believed to be a stream star member of the Ursa Major Moving Group.[citation needed]
References[edit]
^ abcd Decin, G.; et al. (November 2003), "Age Dependence of the Vega Phenomenon: Observations", The Astrophysical Journal, 598 (1): 636–644, arXiv:astro-ph/0308294, Bibcode:2003ApJ...598..636D, doi:10.1086/378800.mw-parser-output cite.citation{font-style:inherit}.mw-parser-output q{quotes:"""""""'""'"}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-limited a,.mw-parser-output .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}
External links[edit]
- HR 5365
- CCDM J14192+1300
- Image 18 Boötis
 | This binary or multiple star system–related article is a stub. You can help Wikipedia by expanding it. |
 | This subgiant-star-related article is a stub. You can help Wikipedia by expanding it. |
Categories:
- Boötes
- F-type subgiants
- Ursa Major Moving Group
- Henry Draper Catalogue objects
- Hipparcos objects
- Flamsteed objects
- HR objects
- Durchmusterung objects
- Multiple star stubs
- Subgiant-star stubs
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