DENIS J082303.1−491201

{{Short description|Brown dwarf in the constellation Vela}}

{{Starbox begin}}

{{Starbox observe

|epoch=J2000

|constell=Vela

|ra={{RA|08|23|03.13}}{{cite journal|title=2MASS All-Sky Catalog of Point Sources|date=2003|journal=VizieR On-line Data Catalog|author=Cutri, R. M.|display-authors=etal|bibcode=2003yCat.2246....0C}}

|dec={{DEC|-49|12|01.3}}

|appmag_v=

}}

{{Starbox character

|appmag_1_passband=R

|appmag_1=20.020{{cite simbad|title=2MASS J08230313-4912012|access-date=19 September 2017}}

|class=L1.5 + L5.5{{cite journal|doi=10.1051/0004-6361/201425536|title=DE0823−49 is a juvenile binary brown dwarf at 20.7 pc|year=2015|arxiv=1505.07972|bibcode=2015A&A...579A..61S|last1=Sahlmann|first1=J.|last2=Burgasser|first2=Adam J.|last3=Martín |first3=Eduardo L.|last4=Lazorenko|first4=P. F.|last5=Bardalez Gagliuffi|first5=D. C.|last6=Mayor|first6=M.|last7=Ségransan|first7=D.|last8=Queloz|first8=D.|last9=Udry|first9=S.|journal=Astronomy & Astrophysics|volume=579|pages=A61|s2cid=119234915}}

}}

{{Starbox astrometry

|prop_mo_ra=−154.92

|prop_mo_dec=7.99

|dist_pc=20.69 ± 0.06

|dist_ly={{cvt|20.69|±|0.06|pc|ly|disp=number}}

}}

{{Starbox orbit

|reference={{cite web|url=http://www.usno.navy.mil/USNO/astrometry/optical-IR-prod/wds/orb6|title=Sixth Catalog of Orbits of Visual Binary Stars|publisher=United States Naval Observatory|access-date=19 September 2017|archive-date=1 August 2017|archive-url=https://web.archive.org/web/20170801102553/http://www.usno.navy.mil/USNO/astrometry/optical-IR-prod/wds/orb6|url-status=dead}}

|period_unitless=247.75 ± 0.64 d

|axis=4.62 ± 0.12 mas

|inclination=52.2 ± 1.5

|node=346.2 ± 2.0

|periastron=JD 2455927.323928

|eccentricity=0.36 ± 0.04

|periarg=41.8 ± 4.7

}}

{{Starbox detail

|source=

|component1=A

|mass=0.028−0.063

|temperature=2150 ± 100

|luminosity=0.00018

|age_myr=80–500

|component2=B

|mass2=0.018−0.045

|temperature2=1670 ± 140

|luminosity2=0.000063

}}

{{Starbox catalog

|names={{odlist|2MASS=J08230313-4912012}}

}}

{{Starbox reference

|Simbad=2MASS+J08230313-4912012

}}

{{Starbox end}}

DENIS-P J082303.1-491201 (also known as DENIS J082303.1-491201, DE0823-49), is a binary system of two brown dwarfs, located {{convert|20.77|pc|ly}} from Earth. The system is located in the constellation Vela.

The primary has a spectral class of L1.5, a mass of {{solar mass|0.028 to 0.063}} and a temperature of {{convert|2150|K|C F}}. The secondary is also a brown dwarf but with a spectral type of L5.5, a mass of {{solar mass|0.018 to 0.045}}, and a temperature of {{convert|1670|K|C F}}. The mass ratio is around 0.64 to 0.74.

The system has an orbital period of 248 days. The age of the system is estimated to be around 80 to 500 million years old, a relatively young object in the solar neighbourhood, however it does not seem to have any association with any moving groups.

DENIS J082303.1-491201 was discovered in 2007 by Ngoc Phan-Bao et al as part of the Deep Near Infrared Survey of the Southern Sky or DENIS for short.{{cite journal |first=Ngoc |last=Phan-Bao |display-authors=etal |title=Discovery of new nearby L and late-M dwarfs at low Galactic latitude from the DENIS data base |journal=Monthly Notices of the Royal Astronomical Society |volume=383 |number=3 |date=January 2008 |pages=831–844 |doi=10.1111/j.1365-2966.2007.12564.x |doi-access=free |bibcode=2008MNRAS.383..831P |arxiv=0708.4169 |s2cid=10555715 }}.