| 词条 | Mu2 Octantis |
| 释义 |
| name = HD 196067 }}{{Starbox observe | epoch = J2000.0 | constell = Octans | ra = {{RA|20|41|44.088}}[1] | dec = {{DEC|–75|21|02.87}}[1] | appmag_v = +6.51[1] }}{{Starbox character | class = G1V[4] | b-v = +0.62[2] | u-b = +0.26[2] }}{{Starbox astrometry | radial_v = -10.90 ± 0.2[3] | prop_mo_ra = 149.53 ± 2.28[1] | prop_mo_dec = –158.45 ± 2.47[1] | parallax = 22.59 | p_error = 2.62 | parallax_footnote = [1] | absmag_v = 3.28[4] }}{{Starbox detail | source = [4] | mass = 1.29 ± 0.08 | radius = 1.73 ± 0.21 | luminosity = 3.73 | gravity = 4.24 ± 0.03 | temperature = 6017 ± 46 | metal_fe = 0.18 ± 0.04 | age_gyr = 3.3 ± 0.6 | rotational_velocity = 1.45 | rotation = 26 ± 3 }}{{Starbox catalog | names = {{odlist|B=μ2 Oct A|HIP=102125|CCDM=J20417-7521A|CD=-75° 1173|HD=196067|SAO=257836|HR=7864}} }}{{Starbox reference | Simbad = CCDM+J20417-7521A | NSTED = HD+196067 | EPE = HD+196067 }}{{Starbox end}} Mu2 Octantis (μ2 Oct) is a binary star system of two G-type main-sequence stars. It shares the designation μ with μ1 Octantis, from which it is separated by 50 arcminutes. The primary star (A) is HD 196067, whose data is in the starbox. The secondary star (B) is HD 196068 (HIP 102128, LTT 8160),[4] another G-type main-sequence star with an apparent magnitude of 7.18.[4] Its effective temperature 5997 K, and its mass is {{solar mass|1.18 ± 0.07}}.[4] The two are gravitationally bound and separated at 17 arcseconds in our sky, corresponding to 740 astronomical units (AU). The binary semimajor axis is 932 AU.[4] Planetary systemFrom 1998 to 2012, the system was observed using the CORALIE instrument, at the ESO's La Silla Observatory.[4] In 2012, a long-period, wide-orbiting planet was deduced by radial velocity around HD 196067. This was published in November. The planet has been pulled to an eccentric orbit by the B star HD 196068. {{OrbitboxPlanet begin|name=HD 196067| table_ref = | period_unit = day }}{{OrbitboxPlanet | exoplanet = b | semimajor = 5.02 ± 0.19 | eccentricity = 0.66{{±|0.18|0.09}} | period = 3638{{±|232|185}} | mass = >6.9{{±|3.9|1.1}} }}{{Orbitbox end}} References1. ^{{cite simbad|title=* mu.02 Oct|accessdate=5 August 2017}} [5][6]2. ^1 {{cite journal|author1=Mermilliod, J.-C.|title=Compilation of Eggen's UBV data, transformed to UBV (unpublished)|url=http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?1986EgUBV........0M&db_key=AST&nosetcookie=1|date=1986|bibcode= 1986EgUBV........0M}} 3. ^{{cite journal|title=Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system|author=Gontcharov, G. A.|date=2006|journal=Astronomy Letters|volume=32|issue=11|pages=759–771|bibcode=2006AstL...32..759G|doi=10.1134/S1063773706110065|arxiv=1606.08053}} 4. ^{{cite simbad||title=HD 196068|accessdate=5 August 2017}} 5. ^1 2 3 4 5 6 7 {{cite journal | title=The CORALIE survey for southern extrasolar planets XVII. New and updated long period and massive planets | last1=Marmier | first1=M. | last2=Ségransan | first2=D. | last3=Udry | first3=S. | last4=Mayor | first4=M. | last5=Pepe | first5=F. | last6=Queloz | first6=D. | last7=Lovis | first7=C. | last8=Naef | first8=D. | last9=Santos | first9=N. C. | last10=Alonso | first10=R. | last11=Alves | first11=S. | last12=Berthet | first12=S. | last13=Chazelas | first13=B. | last14=Demory | first14=B.-O. | last15=Dumusque | first15=X. | last16=Eggenberger | first16=A. | last17=Figueira | first17=P. | last18=Gillon | first18=M. | last19=Hagelberg | first19=J. | last20=Lendl | first20=M. | last21=Mardling | first21=R. A. | last22=Mégevand | first22=D. | last23=Neveu | first23=M. | last24=Sahlmann | first24=J. | last25=Sosnowska | first25=D. | last26=Tewes | first26=M. | last27=Triaud | first27=A. H. M. J. | displayauthors=1 | journal=Astronomy and Astrophysics | volume=551 | at=A90 | year=2013 | arxiv=1211.6444 | bibcode=2013A&A...551A..90M | doi=10.1051/0004-6361/201219639 }} 6. ^1 2 3 4 5 {{cite journal | title=Validation of the new Hipparcos reduction | url=http://www.aanda.org/articles/aa/full/2007/41/aa8357-07/aa8357-07.html | last1=van Leeuwen | first1=F. | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | year=2007 | arxiv=0708.1752 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 }}Vizier catalog entry }}{{Stars of Octans}} 9 : Planetary systems|Binary stars|Octans|Durchmusterung objects|HR objects|Henry Draper Catalogue objects|Hipparcos objects|Bayer objects|G-type main-sequence stars |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。