Scholz's Star

WISE J072003.20−084651.2
Scholz's Star is located in the constellation Monoceros
Scholz's Star is located in the constellation Monoceros
Scholz's Star
Location of Scholz's Star in the constellation Monoceros

Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Monoceros
Right ascension 07h 20m 03.254s[1]
Declination −08° 46′ 49.90″[1]
Apparent magnitude (V) 18.3[2]
Characteristics
Red dwarf
Spectral type M9.5±0.5[3]
Brown dwarf
Spectral type T5.5±0.5[3]
Astrometry
Radial velocity (Rv)82.4±0.3[3] km/s
Proper motion (μ) RA: −40.3±0.2[2][4] mas/yr
Dec.: −114.8±0.4[2][4] mas/yr
Parallax (π)147.1 ± 1.2 mas
Distance22.2 ± 0.2 ly
(6.80 ± 0.06 pc)
Absolute magnitude (MV)19.4[5]
Orbit[3]
PrimaryScholz's Star A
CompanionScholz's Star B
Period (P)8.06+0.24
−0.25 yr
Semi-major axis (a)0.320±0.003"
(2.173+0.028
−0.029 AU)
Eccentricity (e)0.240+0.009
−0.010
Inclination (i)106.9±0.4°
Longitude of the node (Ω)240.21±0.28°
Periastron epoch (T)2015/09/16+23−28
Argument of periastron (ω)
(secondary)		1±5°
Details
Red dwarf
Mass0.095±0.006[3] M☉
Radius0.992+0.006
−0.007[3] RJup
Age3–10[2] Gyr
Brown dwarf
Mass0.063±0.004[3] M☉
Radius0.822+0.016
−0.015[3] RJup
Other designations
Scholz's Star,[6] Scholz's star, WISE J072003.20−084651.2, WISE 0720−0846, 2MASS J07200325−0846499, 2MASS 0720−0846[7]
Database references
SIMBADdata

Scholz's Star /ˈʃoʊlz(əz)/ (WISE designation WISE 0720−0846 or fully WISE J072003.20−084651.2) is a dim binary stellar system 22 light-years (6.8 parsecs) from the Sun in the constellation Monoceros near the galactic plane.[2] It was discovered in 2013 by astronomer Ralf-Dieter Scholz. In 2015, Eric Mamajek and collaborators reported the system passed through the Solar System's Oort cloud roughly 70,000 years ago,[2] and dubbed it Scholz's Star.

  1. ^ a b Cutri, Roc M.; Skrutskie, Michael F.; Van Dyk, Schuyler D.; Beichman, Charles A.; Carpenter, John M.; Chester, Thomas; Cambresy, Laurent; Evans, Tracey E.; Fowler, John W.; Gizis, John E.; Howard, Elizabeth V.; Huchra, John P.; Jarrett, Thomas H.; Kopan, Eugene L.; Kirkpatrick, J. Davy; Light, Robert M.; Marsh, Kenneth A.; McCallon, Howard L.; Schneider, Stephen E.; Stiening, Rae; Sykes, Matthew J.; Weinberg, Martin D.; Wheaton, William A.; Wheelock, Sherry L.; Zacarias, N. (2003). "VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)". CDS/ADC Collection of Electronic Catalogues. 2246: II/246. Bibcode:2003yCat.2246....0C.
  2. ^ a b c d e f Cite error: The named reference Mamajek2015 was invoked but never defined (see the help page).
  3. ^ a b c d e f g h Cite error: The named reference Dupuy2019 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Burgasser2015 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference FAQ was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference ScienceDaily-2015-02-17 was invoked but never defined (see the help page).
  7. ^ "2MASS J07200325-0846499". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2015-02-18.