ESO Press Release 23/04: Is This Speck of Light an Exoplanet ?
A comparison of the 2M1207 system and our Solar System.
A hypothetical view (image generated with Celestia).
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2M1207 |
Stellar Information
| Other Names | 2MASS J12073346-3932539 |
| Distance from Sol | 230 light years |
| Spectral Type | Brown Dwarf (M8 V spectrum due to its youth - AAS 205th Meeting, 9-13 January 2005) |
| Mass (xSol) | ~25 xJupiter |
| Luminosity (xSol) | |
| Diameter (xSol) | |
| Metallicity (xSol) | |
| Age | ~ 8 million years (A&A 425, L29-L32 (2004)) |
| Habitable Zone |
Planetary Information
| Other Names | 2M1207 b |
| Common Name | None |
| Detection Method | Adaptive optics imaging and spectroscopy |
| Detection Date | April 2004 |
| Mass (xJupiter) | 5.00 |
| Diameter | Unknown |
| Semi-Major Axis | ~55 AU |
| Orbital Period | 2,450 years |
| Orbital Eccentricity | |
| Orbital Inclination | Unknown |
| Temperature | 1,250° K |
| Notes | The star has been identified as being a member of the TW Hydrae Association and has very strong and variable H-alpha emission (Gizis and Bhahrat, ApJL 608, L113, and references therein.) This feature is an indication of a chromosphere. |
ESO Press Release 23/04: Is This Speck of Light an Exoplanet ?
A comparison of the 2M1207 system and our Solar System.
A hypothetical view (image generated with Celestia).
|
Updates January 17, 2005: Established this page. |
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© John M. Dollan
2003-2005 This Page first uploaded January 17, 2005 Most recent update for this page January 17, 2005 |
