TRAPPIST-1 (star)

TRAPPIST-1
Spectral	M8 V
Type	Main Sequence
Luminosity	0.00000373 LSol
Absolute magnitude	18.4
Temperature	2550° K
Mass	0.08 MSol
Radius	0.114 RSol

The star TRAPPIST-1 is a solitary star system whose primary star is a pinkish-white main-sequence "red dwarf" of spectral classification M8.

Description (Specifications)

The planetary system of this star includes seven terrestrial worlds, which lie within or close to the habitable zone of the primary. In particular, planets e, f, and g orbit within the habitable zone. Note that observations make it likely that a layer of ice and/or an extended atmosphere are present on TRAPPIST-1f.

TRAPPIST-1 star system:

• COMPANION: TRAPPIST-1b MASS:~ 0.85 M_⊕ ORBIT: ~ 0.011 AU RADIUS: ~ 1.086 R_⊕ PERIOD: 1.510 days
• COMPANION: TRAPPIST-1c MASS:~ 1.38 M_⊕ ORBIT: ~ 0.015 AU RADIUS: ~ 1.056 R_⊕ PERIOD: 2.422 days
• COMPANION: TRAPPIST-1d MASS:~ 0.41 M_⊕ ORBIT: ~ 0.021 AU RADIUS: ~ 0.772 R_⊕ PERIOD: 4.050 days
• COMPANION: TRAPPIST-1e MASS:~ 0.62 M_⊕ ORBIT: ~ 0.028 AU RADIUS: ~ 0.918 R_⊕ PERIOD: 6.100 days
• COMPANION: TRAPPIST-1f MASS:~ 0.68 M_⊕ ORBIT: ~ 0.037 AU RADIUS: ~ 1.045 R_⊕ PERIOD: 9.207 days
• COMPANION: TRAPPIST-1g MASS:~ 1.34 M_⊕ ORBIT: ~ 0.045 AU RADIUS: ~ 1.127 R_⊕ PERIOD: 12.353 days
• COMPANION: TRAPPIST-1h MASS:< 1.00 M_⊕ ORBIT: ~ 0.063 AU RADIUS: ~ 0.715 R_⊕ PERIOD: 18.764 days

History & Background (Dossier)

The TRAPPIST-1 star system lies approximately 12.1 pc from Terra, and is located in a Coreward/Corespinward direction from Terra at bearing 069.7^o Galactic Longitude and -56.6^o South Galactic Latitude.

References & Contributors (Sources)

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This page uses content from Wikipedia. The original article was at TRAPPIST-1. The list of authors can be seen in the page history. The text of Wikipedia is available under the Commons Attribution-ShareAlike 3.0 Unported License.

This list of sources was used by the Traveller Wiki Editorial Team and individual contributors to compose this article. Copyrighted material is used under license from Far Future Enterprises or by permission of the author. The page history lists all of the contributions.

• EXTERNAL LINK: SIMBAD @ University of Strasbourg: [1]
• Traveller Wiki Editorial Team
• Author & Contributor: WHULorigan
• Author & Contributor: Lord (Marquis) and Master of Sophontology Maksim-Smelchak of the Ministry of Science