NGTS-1
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Columba |
| Right ascension | 5h 30m 51.41s |
| Declination | −36° 37′ 51.53″ |
| Apparent magnitude (V) | 15.524 ± 0.083 |
| Astrometry | |
| Proper motion (μ) | RA: -31.902 mas/yr Dec.: -41.025 mas/yr |
| Parallax (π) | 4.5558 ± 0.0216 mas |
| Distance | 715 ly (220 pc) |
| Characteristics | |
| Evolutionary stage | Red dwarf |
| Spectral type | M0V |
| Details | |
| Mass | 0.617 ± 0.039 M☉ |
| Radius | 0.573 ± 0.077 R☉ |
| Surface gravity (log g) | 4.71 ± 0.23 cgs |
| Temperature | 3916 ± 8 K |
| Other designations | |
NGTS-1 is a faint red dwarf located in the constellation Columba (constellation). With an apparent magnitude of 15.52, it is extremely faint and requires a 305-millimeter telescope.
Discovery
NGTS-1 is the first star discovered by the Next-Generation Transit Survey in Europe. It is known to have at least one exoplanet around the size of Jupiter, which was discovered in 2017.[1]
Physical Properties
Class
This star is classified as an early M-type red dwarf.
Mass, Radius, and Temperature
NGTS-1 has a mass 61.7% of that of the Sun, with 57.3% its radius. Being a cool dwarf, it has an effective temperature of 3916 degrees Kelvin, which gives it an orange hue.[1]
Planetary System
The red dwarf is known to have one Hot Jupiter orbiting it, which is usually impossible.[2]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 0.812 MJ | 0.023 | 2.65 | 0.016 | 85.27° | 1.33 RJ |
References
- ↑ 1.0 1.1 Bayliss, Daniel; Gillen, Edward; Eigmuller, Philipp; McCormac, James; Alexander, Richard D.; Armstrong, David J.; Booth, Rachel S.; Bouchy, Francois; Burleigh, Matthew R.; Cabrera, Juan; Casewell, Sarah L. (2018-04-21). "NGTS-1b: A hot Jupiter transiting an M-dwarf". Monthly Notices of the Royal Astronomical Society. 475 (4): 4467–4475. arXiv:1710.11099. doi:10.1093/mnras/stx2778. ISSN 0035-8711.
- ↑ "NGTS-1b – Scientists Find a Baffling New Monster Planet". Facts Legend. 2017-11-06. Archived from the original on 2017-11-08. Retrieved 2021-02-18.
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