Block Nebula
The Block Nebula is a reflection nebula located in the central part of Yearn Sector, within the Where The Stars End region of the Empty Stars.
- It lies within the Great Void.
- It is an astrographic feature and a nebula.
Description (Specifications)[edit]
The Block Nebula is a large dim group of gases and dark clouds measuring around 9 parsecs coreward-rimward by 6 parsecs spinward-trailing. Parsec-sized "pockets" of gas and dust are located to spinward-coreward and to rimward-trailing of the nebula.
- It is classified as a reflection nebula and is primarily formed of ionized gases, thrown off by the stars at its center many millennia ago.
- The gases consist of about 90% hydrogen, with the remainder made up of helium, oxygen, nitrogen, and other elements. The clouds have a mean density of 102–106 particles/cm³. Its central regions are relatively denser.
Two separate star systems lie at its core:
Binary Solar System[edit]
BN1-ab Binary Star System Star Name Hierarchy Category Mass (Sol) Temp (K) Luminosity (Sol) BN1-ab A0 IV
Primary Giant 6 9000 - 9900 156 Unit Diameter Min Distance Hab Zone Jump Shadow M-Drive Limit AU 0.04187 1.03597 9.93 - 16.18 4.187 41.87 Orbit # * 3 7 6 9 Remarks None Star Name Hierarchy Category Mass (Sol) Temp (K) Luminosity (Sol) BN1-ab BD
Secondary Brown Dwarf 0.0276 950 - 1250 0 Unit Diameter Min Distance Hab Zone Jump Shadow M-Drive Limit AU 0.00092 0.00038 0 - 0.01 0.092 0.92 Orbit # * * * * 3 Remarks Orbits primary at 36.7 AU
Hex Location: 1026 Yearn Sector. 0 Gas Giants.
Monostellar System[edit]
BN2-a Monostellar System Star Name Hierarchy Category Mass (Sol) Temp (K) Luminosity (Sol) BN2-a DA
Primary White Dwarf 0.36 14000 - 14000 0.005 Unit Diameter Min Distance Hab Zone Jump Shadow M-Drive Limit AU 0.00016 0.00587 0.06 - 0.09 0.016 0.16 Orbit # * * * * 0 Remarks None
Hex Location: 1125 Yearn Sector. 0 Gas Giants.
History & Background (Dossier)[edit]
The positions and types of the stars present within the Block Nebula have been cataloged as part of the University of Selasia Spinward Survey. The nebula is named for its supposed resemblance to a block and tackle.
Image Repository[edit]
Worlds & Sectors (Astrography)[edit]
This astrographic feature is primarily found in the following areas:
Charted Space:
World Listing: 1105[edit]
The following systems and worlds are associated with this astrographic feature:
References & Contributors (Sources)[edit]
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- Traveller Wiki Editorial Team
- Author & Contributor: Lord (Marquis) and Master Scout Emeritus Adie Alegoric Stewart of the IISS
- Author & Contributor: WHULorigan
- Author & Contributor: Lord (Marquis) and Master of Sophontology Maksim-Smelchak of the Ministry of Science