XO-1
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For the laptop with the same name, see OLPC XO-1.
| Observation data Epoch J2000.0 |
|
|---|---|
| Constellation (pronunciation) |
Corona Borealis |
| Right ascension | 16h 02m 12s |
| Declination | +28° 10′ 11″ |
| Apparent magnitude (V) | +11.3 |
| Characteristics | |
| Spectral type | G1V |
| U-B color index | ? |
| B-V color index | ? |
| Variable type | ? |
| Astrometry | |
| Radial velocity (Rv) | ? km/s |
| Proper motion (μ) | RA: -19.7 mas/yr Dec.: 15.0 mas/yr |
| Parallax (π) | ? ± 2.0 1.9 90 mas |
| Distance | 600 ly (200 ± 20 pc) |
| Absolute magnitude (MV) | ? |
| Details | |
| Mass | 1 ± 0.03 M☉ |
| Radius | 1 ± 0.08 R☉ |
| Luminosity | ? L☉ |
| Temperature | ? K |
| Rotation | ? |
| Age | 4.5 ± 2 years |
| Other designations | |
|
GSC 02041-01657, TYC 2041- 1657-1
|
|
XO-1 (also known as GSC 02041-01657) is a yellow dwarf star approximately 600 light-years away in the constellation Corona Borealis. XO-1 has a mass and radius similar to the Sun. In 2006, an extrasolar planet (XO-1b) was discovered orbiting XO-1. This was done by the XO Telescope.
Contents |
[edit] Planetary system
In 2006, an international team of professional and amateur astronomers discovered a Jupiter-sized planet orbiting around XO-1. The team, led by Peter McCullough of the Space Telescope Science Institute in Baltimore, includes four amateur astronomers from North America and Europe.
The planet was confirmed using the Harlan J. Smith Telescope and Hobby-Eberly Telescope at McDonald Observatory of the University of Texas.
| Planet (in order from star) |
Mass (MJ) |
Orbital period (days) |
Semimajor axis (AU) |
Eccentricity |
|---|---|---|---|---|
| b | 0.9 ± 0.07 | 3.941534 ± 2.7e-05 | 0.0488 ± 0.0005 | 0 |
[edit] Telescopes that have observed XO-1
- 2004 XO cameras, Hawaii, USA, McCullough, transits
- 2004 SuperWASP-North, La Palma, Spain, Pollacco, transits
- 2005.06.23 0.34m telescope, Maine, USA, Howell, photometric transit data
- 2005.07.12 0.35m telescope, Landen, Belgium, Vanmunster, photometric transit data
- 2006.03.18 0.34m telescope, Maine, USA, Howell, photometric transit data
- 2006.02 Harlan J Smith telescope, Texas, USA, Johns-Krull, spectra
- 2006.02 Hobby Eberly Telescope, Texas, USA, McCullough, spectra
- 2006.04.06 0.35m telescope, Landen, Belgium, Vanmunster, photometric transit data
- 2006.06.01 Keck telescope, Hawaii, USA, Liu, adaptive optics
[edit] See also
[edit] External links
- Extrasolar Planets Encyclopaedia: XO-1
- SpaceDaily: Astronomers Catch Planet By Unusual Means (May 19, 2006)
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