Mayrit 1701117
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| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Orion[1] |
| Right ascension | 05h 40m 25.8041s[2] |
| Declination | −02° 48′ 55.501″[2] |
| Characteristics | |
| Evolutionary stage | proto-brown dwarf |
| Apparent magnitude (G) | 17.842±0.031[2] |
| Apparent magnitude (I) | 16.538±0.07[3] |
| Apparent magnitude (J) | 15.146±0.039[3] |
| Apparent magnitude (H) | 14.101±0.030[3] |
| Apparent magnitude (K) | 13.074±0.036[3] |
| Astrometry | |
| Proper motion (μ) | RA: 0.429±0.315 mas/yr[2] Dec.: 1.834±0.298 mas/yr[2] |
| Parallax (π) | 3.3546±0.3747 mas[2] |
| Distance | approx. 1,000 ly (approx. 300 pc) |
| Details | |
| Mass | ~40[4] MJup |
| Luminosity | 0.012[4] L☉ |
| Age | 30,000-40,000[4] years |
| Other designations | |
| ESO-HA 1736, 2MASS J05402580-0248553, Gaia DR2 3216418342740867840, TIC 11359910 | |
| Database references | |
| SIMBAD | data |
Mayrit 1701117 (M1701117) is a proto-brown dwarf launching a large (0.8 light-years, 0.26 parsec) Herbig-Haro object, called HH 1165. Previously only small micro-jets (≤0.03 parsec) were known from young proto-brown dwarfs.[5]
Mayrit 1701117 was discovered in 2008 in the Mayrit catalogue by J. A. Caballero. The Mayrit catalogue is a list of stars and high-mass brown dwarfs in the Sigma Orionis cluster. The catalogue uses DENIS and 2MASS data.[3] Later, the source was detected in H-alpha with the ESO Schmidt telescope at La Silla and catalogued as ESO-HA 1736.[6] The central object has a mass of around 0.04–0.08 M☉ and will most likely evolve into a brown dwarf. The central object is surrounded by a H-alpha halo with a clumpy distribution, which could be due to wind-envelope interactions. The southeastern tail of the H-alpha emission is likely reflecting the light from the nearby star HR 1950.[5] The mass of the central source was later estimated to be around 40 MJ and the system is 30,000-40,000 years old.[4]
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