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
BN1-ab Binary Star System Star Name Hierarchy Color Classification Remarks BN1-ab Primary Primary White A0 IV None BN1-ab Companion Secondary Brown Dwarf BD Orbits primary at 36.7 AU
Hex Location: 1026 Yearn Sector. 0 Gas Giants.
BN2-a Monostellar System Star Name Hierarchy Color Classification Remarks BN2-a Primary White Dwarf D None
Hex Location: 1125 Yearn Sector. 0 Gas Giants.
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.
Worlds & Sectors (Astrography)
World Listing: 1105
References & Contributors (Sources)
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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