| 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]
- ^ "Spirals with a Tale to Tell". www.eso.org. Retrieved 6 October 2016.
- ^ a b c d Cite error: The named reference
GaiaDR3was invoked but never defined (see the help page). - ^ a b c d e Cite error: The named reference
SIMBADwas invoked but never defined (see the help page). - ^ Cite error: The named reference
Paneque2021was invoked but never defined (see the help page). - ^ Max Planck Institute (6 October 2016). "Astronomers Discover Density Waves in Protoplanetary Disk Surrounding Elias 2-27". SciTechDaily.
- ^ Charles Blue (29 September 2016). "Image Release: Spiral Arms Embrace Young Star". National Radio Astronomy Observatory.
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