NSVS 06507557

NSVS 06507557

Observation data Epoch J2000.0      Equinox J2000.0
Constellation	Aries
Right ascension	01h 58m 23.87s
Declination	+25° 21′ 11.96″
Apparent magnitude (V)	+13.4
Astrometry
Distance	361.86 ly (111±9 [1] pc)
Characteristics
Spectral type	K9V / M3V
B−V color index	1.36
Variable type	T Tauri-type?
Details
Mass	0.66/0.28[1] M☉
Radius	0.6/0.44[1] R☉
Luminosity	0.079/0.022[1] L☉
Temperature	3960/3365[1] K
Orbit
Companion	NSVS 06507557 B
Period (P)	0.00141 (0.515 days)[1] yr
Semimajor axis (a)	0.0112 AU[1]"
Eccentricity (e)	0.002[1]
Inclination (i)	83.3[1]°
Other designations
NSVS 06507557, 2MASS J01582387+2521196

NSVS 06507557 is a spectroscopic binary star system approximately 362 light-years away in the constellation of Aries, discovered in 2009. The primary star is a late type-K dwarf, while the secondary star is thought to be an red dwarf. Both stars are thought to be PMS stars, only 20 million years old.^[1]

Stellar components

NSVS 06507557 A is a late type orange dwarf star, close to spectral type M and with two thirds of Sun's mass. The spectral type of NSVS 06507557 B is classed as M3, a dim red dwarf star, with 28 percent of Sun's mass but a bloated radius of 0.44 Solar radii, due to the youth of stellar system. Both stars are very close each other separated by 2.63 Solar radii, roughly one percent the value of 1 Astronomical Unit and take half an Earth's sidereal day to revolve around their orbit barycentre.

References

1. ^ ^{a b c d e f g h i j} Cakirli & Ibanoglu (2009). "NSVS 06507557: a low-mass double-lined eclipsing binary". Monthly Notices of the Royal Astronomical Society. arXiv:0909.1921. Bibcode 2009MNRAS.tmp.1540C. 

See also

• CM Draconis
• Binary star