| 词条 | DENIS-P J082303.1-491201 b |
| 释义 |
| name = DENIS-P J082303.1-491201 b | image = | caption = | apsis = | discovery_ref = [1] | discoverer = Sahlmann et al. (2013) | discovery_site = ESO telescopes at the La Silla Paranal Observatory | discovered = August 2013 | discovery_method = Transit photometry | alt_names = {{nowrap|2MASS J08230313-4912012 b[2]}} | orbit_ref = [2] | periastron = | apoastron = | semimajor = {{val|0.36|0.01}} AU | avg_speed = | eccentricity = {{val|0.345|+0.068|-0.064}} | period = {{val|246.36|+1.38|-1.35}} days | inclination = {{val|56.6|+1.9|-2.1}} deg | angular_dist = | long_periastron = {{val|36.3|+7.2|-8.4}} deg | time_periastron = | semi-amplitude = | mean_radius = | surface_area = | volume = | density = | mass = {{Jupiter mass|{{val|28.5|1.9}}|link=yes}}[2] | surface_grav = | escape_velocity = | albedo = | single_temperature = }}DENIS-P J082303.1-491201 b (alias 2MASS J08230313-4912012 b) is a substellar object, classified as either an exoplanet or a brown dwarf, orbiting DENIS-P J082303.1-491201,[3] an L1.5-type brown dwarf in the constellation Vela.[2] Discovery{{nowrap|DENIS-P J082303.1-491201 b}} was discovered by Sahlmann et al. (2013) using the ESO telescopes at the La Silla Paranal Observatory.[1] It is part of an ultracool binary system.[1]PropertiesPhysical{{nowrap|DENIS-P J082303.1-491201 b}} is located {{convert|20.77|pc|ly|lk=on}} from Earth. At {{Jupiter mass|{{val|28.5|1.9}}|link=yes}},[2] it is listed as the second most massive planet in the NASA Exoplanet Archive.Orbital{{nowrap|DENIS-P J082303.1-491201 b}} orbits the nearby L1.5-type brown dwarf {{nowrap|DENIS-P J082303.1-491201}}, which is {{val|7.5|0.7}}% the mass of our Sun,[1] and has an orbital period of about 246 days.[1][2]See also{{div col|colwidth=30em}}
References1. ^1 2 3 4 {{cite journal |title=Astrometric orbit of a low-mass companion to an ultracool dwarf |journal=Astronomy & Astrophysics |first1=J. |last1=Sahlmann |first2=P. F. |last2=Lazorenko |first3=D. |last3=Ségransan |first4=E. L. |last4=Martín |first5=D. |last5=Queloz |first6=M. |last6=Mayor |first7=S. |last7=Udry |display-authors=5 |volume=556 |at=A133 |date=August 2013 |doi=10.1051/0004-6361/201321871 |bibcode=2013A&A...556A.133S |arxiv=1306.3225}} 2. ^1 2 3 4 5 {{cite web |url=http://exoplanetarchive.ipac.caltech.edu/cgi-bin/DisplayOverview/nph-DisplayOverview?objname=DENIS-P+J082303.1-491201+b&type=CONFIRMED_PLANET |title=DENIS-P J082303.1-491201 b |work=Caltech |accessdate=8 March 2014}} 3. ^{{cite simbad |title= 2MASS J08230313-4912012 |accessdate=8 March 2014}} External links
3 : Binary stars|Brown dwarfs|Exoplanets discovered in 2013 |
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