Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Ophiuchus |
Right ascension | 16h 26m 45.032s[2] |
Declination | −24° 23′ 07.79″[2] |
Apparent magnitude (V) | 13.32[3] |
Characteristics | |
Evolutionary stage | Pre-main-sequence star |
Spectral type | M0[3] |
Astrometry | |
Proper motion (μ) | RA: -7.954 mas/yr[2] Dec.: -28.295 mas/yr[2] |
Parallax (π) | 9.0853 ± 0.8505 mas[2] |
Distance | 360 ± 30 ly (110 ± 10 pc) |
Details[4] | |
Mass | 0.46+0.02 −0.03 M☉ |
Radius | 2.3 R☉ |
Temperature | 3850 K |
Age | 0.8 Myr |
Other designations | |
Database references | |
SIMBAD | data |
Elias 2-27 (2MASS J16264502-2423077)[3] is a YSO star[3] with a protoplanetary disk around it, located in the Ophiuchus Molecular Cloud (ρ Oph Cld, 5 Oph Cld, Ophiuchus Dark Cloud), a star-forming region in the Ophiuchus constellation, some 360 light-years (110 parsecs) away. This star system became the first ever observed with density waves in the disk, giving it a spiral structure. Elias 2-27 is located near the double star Rho Ophiuchi (5 Ophiuchi).[5][6]
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