2MASS J18450079–1409036
Star system of two red dwarves in the constellation Scutum / From Wikipedia, the free encyclopedia
2MASS J18450079–1409036 and 2MASS J18450097–1409053 is a system of two red dwarf stars both of which have spectral types of M5,[6] with projected separation of 3.2 seconds of arc.[7] The system is located in the constellation Scutum. The Gaia parallaxes place the system at 18.2 parsecs (59 light-years) from Earth.[1][3] Kinematically, it belongs to young (30-50 million years) Argus association.[2]
Quick Facts Constellation, Right ascension ...
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Scutum |
Right ascension | 18h 45m 00.79s |
Declination | –14° 09′ 03.6″ |
Apparent magnitude (V) | 13.221 |
Characteristics | |
Spectral type | M5 / M5 |
Astrometry | |
Gaia EDR3 4105057482987021184 | |
Proper motion (μ) | RA: 47.53±0.04 mas/yr[1] Dec.: -85.95±0.03 mas/yr[1] |
Parallax (π) | 55.2002 ± 0.0422 mas[1] |
Distance | 59.09 ± 0.05 ly (18.12 ± 0.01 pc) |
Gaia EDR3 4105057482994688384 | |
Radial velocity (Rv) | -23.0±0.3[2] km/s |
Proper motion (μ) | RA: 33.48±0.04 mas/yr[3] Dec.: -91.47±0.03 mas/yr[3] |
Parallax (π) | 55.1253 ± 0.0443 mas[3] |
Distance | 59.17 ± 0.05 ly (18.14 ± 0.01 pc) |
Orbit[4] | |
Primary | 2MASS J18450097–1409053 A |
Companion | 2MASS J18450097–1409053 B |
Period (P) | 586 yr |
Semi-major axis (a) | 3.224±0.016" (52 AU) |
Details[4] | |
2MASS J18450079–1409036 | |
Mass | 0.2 M☉ |
2MASS J18450097–1409053 | |
Mass | 0.2 M☉ |
Surface gravity (log g) | 4.50±0.05[5] cgs |
Temperature | 3000±23[5] K |
Metallicity [Fe/H] | -0.25±0.2[5] dex |
Age | 40±10[2] Myr |
Other designations | |
2MASS J18450097–1409053AB | |
2MASS J18450097–1409053A: UCAC3 152-2811762, UCAC4 380-128133, 2MASS J18450079–1409036 | |
2MASS J18450097–1409053B: UCAC3 152-281185, UCAC4 380-128136, 2MASS J18450097-1409053 | |
Database references | |
SIMBAD | 2MASS J18450079–1409036 |
2MASS J18450097–1409053 |
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