Difference between revisions of "Greater Shell Nebula"
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The [[Greater Shell Nebula]] is a reflection nebula located in the central part of [[Coro Sector]], within the [[Empty Stars]]. | The [[Greater Shell Nebula]] is a reflection nebula located in the central part of [[Coro Sector]], within the [[Empty Stars]]. | ||
* It is an [[astrographic feature]] and a [[nebula]]. | * It is an [[astrographic feature]] and a [[nebula]]. | ||
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== Description ([[Specifications]]) == | == Description ([[Specifications]]) == | ||
| − | The Greater Shell Nebula is a large dim group of gases and dark clouds measuring around | + | The Greater Shell Nebula is a large dim group of gases and dark clouds measuring around seven [[parsec]]s coreward-rimward by around six [[parsec]]s spinward-trailing. The nebula has a large "tail" extending for nearly five [[parsec]]s to [[rimward]]. |
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* It is classified as a reflection nebula and is primarily formed of ionized gases, thrown off by the [[star]]s at its center many millennia ago. | * It is classified as a reflection nebula and is primarily formed of ionized gases, thrown off by the [[star]]s at its center many millennia ago. | ||
* The gases consist of about 90% hydrogen (H<sub><small>2</small></sub>), with the remainder made up of helium (He), oxygen (O<sub><small>2</small></sub>), nitrogen (N<sub><small>2</small></sub>), and other elements. The clouds have a mean density of 10<sup><small>–6</small></sup> particles/cm³. Its central regions are relatively denser. | * The gases consist of about 90% hydrogen (H<sub><small>2</small></sub>), with the remainder made up of helium (He), oxygen (O<sub><small>2</small></sub>), nitrogen (N<sub><small>2</small></sub>), and other elements. The clouds have a mean density of 10<sup><small>–6</small></sup> particles/cm³. Its central regions are relatively denser. | ||
Revision as of 21:19, 20 January 2019
The Greater Shell Nebula is a reflection nebula located in the central part of Coro Sector, within the Empty Stars.
- It is an astrographic feature and a nebula.
Description (Specifications)
The Greater Shell Nebula is a large dim group of gases and dark clouds measuring around seven parsecs coreward-rimward by around six parsecs spinward-trailing. The nebula has a large "tail" extending for nearly five parsecs to rimward.
- 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 (H2), with the remainder made up of helium (He), oxygen (O2), nitrogen (N2), and other elements. The clouds have a mean density of 10–6 particles/cm³. Its central regions are relatively denser.
A trinary star systems lie at its core:
Trinary Solar System
GSN1-abc Trinary Star System Star Name Hierarchy Category Mass (Sol) Temp (K) Luminosity (Sol) GSN1-abc A4 II
Primary Supergiant 11.6 8200 - 8800 1120 Unit Diameter Min Distance Hab Zone Jump Shadow M-Drive Limit AU 0.13771 2.77584 26.61 - 43.37 13.771 137.71 Orbit # 0 5 9 7 11 Remarks None Star Name Hierarchy Category Mass (Sol) Temp (K) Luminosity (Sol) GSN1-abc G1 V
Secondary Main Sequence 1.03 5770 - 5860 1.109 Unit Diameter Min Distance Hab Zone Jump Shadow M-Drive Limit AU 0.0049 0.0873 1 - 1.75 0.49 4.9 Orbit # * * 4 1 6 Remarks None Star Name Hierarchy Category Mass (Sol) Temp (K) Luminosity (Sol) GSN1-abc M1 V
Tertiary Main Sequence 0.5 3620 - 3660 0.08839 Unit Diameter Min Distance Hab Zone Jump Shadow M-Drive Limit AU 0.0023 0.0247 0.31 - 0.59 0.23 2.3 Orbit # * * 1 0 5 Remarks None
Hex Location: 1007 Coro Sector. 2 Gas Giants.
History & Background (Dossier)
The positions and types of the stars present within the Greater Shell Nebula have been cataloged as part of the University of Selasia Spinward Survey. The nebula is named for its twisted conical shape, supposedly resembling a large seashell.
Image Repository
Worlds & Sectors (Astrography)
This astrographic feature is primarily found in the following areas:
Uncharted Space:
World Listing: 1105
The following systems and worlds are associated with this astrographic feature:
No world articles for Greater Shell Nebula
References & Contributors (Sources)
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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.
- 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