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 This artist's impression shows a dramatic close-up of the extrasolar planet XO-1b passing in front of a Sun-like star 600 light-years from Earth. The Jupiter-sized planet is in a tight four-day orbit around the star. Credit: NASA, ESA and G. Bacon (STScI) | |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Corona Borealis[1] |
| Right ascension | 16h 02m 11.8462s[2] |
| Declination | +28° 10′ 10.420″[2] |
| Apparent magnitude (V) | 11.19 ± 0.03[3] |
| Characteristics | |
| Spectral type | G1V[3] |
| Apparent magnitude (B) | 11.85 ± 0.04[3] |
| Apparent magnitude (V) | 11.19 ± 0.03[3] |
| Apparent magnitude (J) | 9.939 ± 0.022[4] |
| Apparent magnitude (H) | 9.601 ± 0.017[4] |
| Apparent magnitude (K) | 9.527 ± 0.015[4] |
| Variable type | Planetary transit variable[3] |
| Astrometry | |
| Proper motion (μ) | RA: −17.349(12) mas/yr[2] Dec.: 14.780(15) mas/yr[2] |
| Parallax (π) | 6.1489 ± 0.0136 mas[2] |
| Distance | 530 ± 1 ly (162.6 ± 0.4 pc) |
| Absolute magnitude (MV) | 5.02+0.14 −0.16[5] |
| Details | |
| Mass | 1.027+0.057 −0.061[5] M☉ |
| Radius | 0.94 ± 0.02[6] R☉ |
| Luminosity | 0.86+0.12 −0.10[5] L☉ |
| Surface gravity (log g) | 4.50 ± 0.01[7] cgs |
| Temperature | 5738 ± 65[7] K |
| Metallicity [Fe/H] | −0.06 ± 0.07[7] dex |
| Rotational velocity (v sin i) | 1.1 ± 1.0[7] km/s |
| Age | 1.0+3.1 −0.9[5] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
XO-1 (Moldoveanu) is a magnitude 11 G-type main-sequence star located approximately 530 light-years away[2] in the constellation Corona Borealis. XO-1 has a mass and radius similar to the Sun. In 2006 the extrasolar planet XO-1b was discovered orbiting XO-1 by the transit method using the XO Telescope.[3]
The name Moldoveanu was selected in the NameExoWorlds campaign by Romania, during the 100th anniversary of the IAU. Moldoveanu is the highest peak in Romania.[9][10][11]
- ^ Cite error: The named reference
Roman1987was invoked but never defined (see the help page). - ^ a b c d e Cite error: The named reference
Gaia DR3was invoked but never defined (see the help page). - ^ a b c d e f Cite error: The named reference
McCullough2006was invoked but never defined (see the help page). - ^ a b c Cite error: The named reference
Skrutskie2006was invoked but never defined (see the help page). - ^ a b c d Cite error: The named reference
Torres2008was invoked but never defined (see the help page). - ^ Cite error: The named reference
Burke2010was invoked but never defined (see the help page). - ^ a b c d Cite error: The named reference
Torres2012was invoked but never defined (see the help page). - ^ Cite error: The named reference
Simbadwas invoked but never defined (see the help page). - ^ "Romania | NameExoworlds". Archived from the original on 2019-12-18.
- ^ "Approved names". NameExoworlds. Retrieved 2020-01-02.
- ^ "International Astronomical Union | IAU". www.iau.org. Retrieved 2020-01-02.