| 词条 | HD 171028 |
| 释义 |
| name = HD 171028 }}{{Starbox observe | epoch = J2000.0 | constell = Ophiuchus | ra = {{RA|18|32|15.4933}} | dec = {{DEC|06|56|44.6858}} | appmag_v = 8.31 }}{{Starbox character | class = G0V | b-v = | u-b = | variable = }}{{Starbox astrometry | radial_v = | prop_mo_ra = {{val|−42.869|0.084}} | prop_mo_dec = {{val|−14.705|0.077}} | parallax = 8.9274 | p_error = 0.0497 | parallax_footnote = | absmag_v = }}{{Starbox detail | source = | mass = | radius = | luminosity = | luminosity_bolometric = | luminosity_visual = | gravity = | temperature = | metal_fe = | rotation = | rotational_velocity = | age = | age_myr = | age_gyr = }}{{Starbox catalog | names = {{odlist | 2MASS=J18321548+0656446 | BD=+06 3833 | TYC=458-1450-1 }}[6] }}{{Starbox reference | Simbad = HD+171028 }}{{Starbox end}}HD 171028 is a yellow main-sequence star in the constellation of Ophiuchus. The apparent magnitude is +8.31, visible in good binoculars. Unlike most planet-harboring stars, it does not have a Hipparcos number, though the distance was estimated at 90±7.8 parsecs. In the summer of 2007, a planet was discovered orbiting this star.[7]{{OrbitboxPlanet begin | table_ref = [8] }}{{OrbitboxPlanet | exoplanet = b | mass = {{val|1.98|p=≥}} | semimajor = 1.32 | period = {{val|550|3}} | eccentricity = {{val|0.59|0.01}} }}{{Orbitbox end}} See also
References1. ^1 {{cite journal | title=The HARPS search for southern extra-solar planets. XII. A giant planet orbiting the metal-poor star HD 171028 | url=https://www.aanda.org/articles/aa/full/2007/41/aa8129-07/aa8129-07.html | last1=Santos | first1=N. C. | last2=Mayor | first2=M. | last3=Bouchy | first3=F. | last4=Pepe | first4=F. | last5=Queloz | first5=D. | last6=Udry | first6=S. | display-authors=1 | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=647–651 | year=2007 | arxiv=0708.0954 | bibcode=2007A&A...474..647S | doi=10.1051/0004-6361:20078129 }} [1][2][3]2. ^1 {{cite journal | title=The HARPS search for southern extrasolar planets. XXV. Results from the metal-poor sample | url=https://www.aanda.org/articles/aa/full_html/2011/02/aa15494-10/aa15494-10.html | last1=Santos | first1=N. C. | last2=Mayor | first2=M. | last3=Bonfils | first3=X. | last4=Dumusque | first4=X. | last5=Bouchy | first5=F. | last6=Figueira | first6=P. | last7=Lovis | first7=C. | last8=Melo | first8=C. | last9=Pepe | first9=F. | last10=Queloz | first10=D. | last11=Ségransan | first11=D. | last12=Sousa | first12=S. G. | last13=Udry | first13=S. | display-authors=1 | journal=Astronomy and Astrophysics | volume=526 | at=A112 | year=2011 | arxiv=1011.2094 | bibcode=2011A&A...526A.112S | doi=10.1051/0004-6361/201015494 }} 3. ^1 {{cite simbad | title = HD 171028 | accessdate = 2018-10-06}} }}{{Sky|18|32|15.4929|+|06|56|44.714|293.5}}{{Stars of Ophiuchus}}{{main-star-stub}} 5 : G-type main-sequence stars|Henry Draper Catalogue objects|Ophiuchus (constellation)|Planetary systems|Durchmusterung objects |
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