Valhalla (SM 2811) (system)

The Valhalla System is a star system.

• It consists of multiple worlds orbiting a central star.
• Valhalla is designated the mainworld

Valhalla System
Rhylanor/Spinward Marches 2811
Position	Distance	Name	UWP
Primary		'Losteye'	'G4 V'
1	0.9 AU	Anvil
2	2.5 AU	Valhalla (SM 2811)	E365432-5
1	12	* Eye'
3	3.6 AU	Hammer
4	3.9 AU	Inner Belt
5	5 AU	Freya	Gas Giant
1	<5	* Shepherd Moons'
2	20	* Hunter'
6	7 AU	Outer Belt
7	11 AU	Odin	Ice Giant
1	<5	* Shepherd Moons'
2	9	* Blitz'
3	16	* Donner'

Description (Astrography & Planetology)

Stellar Data

Valhalla has a solitary primary star.

• It is a yellow main sequence named Losteye.

Valhalla has a solitary primary star.

Losteye
	Type	Category		Mass (Sol)	Temperature (K)	Luminosity
	G4 V	Main Sequence (Dwarf)		0.985	5660 - 5680	0.94848
	Unit	Diameter	Safe Distance	Habitable Zone	Jump Shadow	M-Drive Limit
	AU	0.0092	0.0808	0.93 - 1.65	0.92	9.2
	Orbit #	*	*	3	3	7
	Remarks

System Overview

The Valhalla system is characterized by its large central star, its dense, metal-rich inner planets, and its double-belt arrangement. System age is roughly 6.5 billion years.

Main Contents	Stars	Orbital Distances (AU)
* Central star	* Primary Losteye, G4 V	* Inner limit 0.9
* 3 terrestrial worlds	* Temperature (K) 6400	* Inner life 2.200
* Inner belt	* Luminosity (sols) 4.36	* Outer life 3.650
* Large Gas giant	* Mass (sols) 1.35	* Snow line 6.02
* Outer belt	* Radius (AU) 0.0110	* Outer limit 48.0
* Large Ice giant	* Stable life 3.5 billion yrs	--

Worlds

Orbit	SubOrbit	Name	Diameter	Density	Gravity	Rotation	Revolution	e	World Type
0.9	--	Anvil	2200	6.2	0.30	tl	273.5d	0.00	Terrestrial
2.5	--	Valhalla	3400	6.1	0.40	26.2h	1266.25d	0.02	Terrestrial
2.5	10	Eye	1000	6.0	0.08	tl	19d	0.03	Terrestrial
3.6	--	Hammer	2900	5.4	0.27	28.1h	6.0y	0.05	Terrestrial
6	--	Freya	85400	1.5	1.15	11.31h	12.9y	0.01	Gas Giant
6	<5	2 shepherd moons	<400	5.9	--	--	--	0.01	Terrestrial
6	20	Hunter	500	6.1	0.02	tl	11.1d	0.04	Terrestrial
12	--	Odin	18500	1.3	1.15	16.27h	36.5y	0.05	Gas Giant
12	<5	4 shepherd moons	<400	3.4	--	--	--	0.01	Terrestrial
12	9	Blitz	500	3.1	0.007	3d	6.4d	0.08	Terrestrial
12	16	Donner	800	3.4	0.009	5d	17.2d	0.03	Terrestrial

Units

• Orbit is in AU or planetary radii for satellites
• Diam = diameter in miles (X 1.609 for km)
• Dens = average density in g/cc
• Grav = 'surface' gravity in G's
• Rot/Rev = rotation or revolution period in hours (h), days (d), or years (y) ; tl = tide-locked
• e = orbital eccentricity
• Type = G:Space/FI classification

• Anvil: Anvil is a tidally-locked rock with no atmosphere, the typical huge temperature difference between night and day, and deposits of methane-water on the night side. A high-security, subterranean prison complex is maintained within a crater at the northern pole. This prison holds the more dangerous prisoners from Valhalla and Hammer.

• Hammer: Hammer is a smaller, colder world with large ice caps and no oceans. Like its sister world, it has a strong magnetic field which allows it to retain a thin, breathable atmosphere. Geologically, it is active but much less so than Valhalla. Its population is roughly 5,000; it is primarily scientific with a small military presence. A frontier starport exists here for supplies, and is tightly controlled by the military presence. The main settlement is Glas, a "town" burrowed into a large glacier on the northern icepack. The settlement is known primarily for scientific research and ice sculpture.

• Inner Belt: The inner belt is a typical belt containing planetoids that are of similar makeup to the inner planets.

• Freya: A large gas giant with a relatively sparse family of moons.

• Outer Belt: A second planetoid belt circles between the giant planets. It appears to be made of less dense materials than the inner belt, and its planetoids have a significantly lower average size than most belts.

• Odin: A large ice giant with a relatively sparse family of moons. Interestingly, its moons are not yet tidally locked, and are of a less dense consistency from the inner planetoids.

Valhalla

World Data

• Mass : 0.62 earth
• Apparent day length : 26.2 hours
• Axial Tilt : 16.5 degrees
• Atmospheric pressure : 0.95 atm
• Atmospheric composition : nitrogen 82%, oxygen 14%, others 4%
• Hydrographics : 50%, water oceans
• Albedo : 0.35
• Greenhouse effect : 0.12
• Average surface temperature (G:Space) : 302 K (Warm)
• Weather factor : 12 (Earth=10, so less stable)
• Life : complex animals, max IQ 6 (no primate/cetacean equivalents);
• Moons: 1 large

Orbit	Name	Diameter	Density	Gravity	Rotation	Revolution	e	World Type
10	Eye	1000	6.0	0.08	tl	19d	0.03	Terrestrial

Tidal : G:FI tidal factor Other units are as per the World table, above.

History & Background (Dossier)

No information yet available.

Sources

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 Mongoose Publishing or by permission of the author. The page history lists all of the contributions.

• Marc Miller. The Spinward Marches (Game Designers Workshop, 1979), 20-21.
• Marc Miller. The Spinward Marches Campaign (Game Designers Workshop, 1985), 18-19.
• Marc Miller. Imperial Encyclopedia (Game Designers Workshop, 1987), 94-100. (UWP only)
• Marc Miller. MegaTraveller 1: The Zhodani Conspiracy (Paragon Software, 1990), .
• Marc Miller. MegaTraveller 2: Quest for the Ancients (Paragon Software, 1991), .
• Rob Caswell. "Domain of Deneb: Sector Data." MegaTraveller Journal 3 (1992): 47-58. (UWP only)
• Dave Nilsen. The Regency Sourcebook (Game Designers Workshop, 1995), 38. (UWP only)
• Martin Dougherty, Neil Frier. Behind the Claw (Steve Jackson Games, 1998), 79.
• Mike West. The Spinward States (Avenger Enterprises, 2008), 103. (UWP only)
• Martin Dougherty. The Spinward Marches (Mongoose Publishing, 2008), .
• Martin Dougherty. Behind the Claw (Mongoose Publishing, 2019), 40-45. (UWP only)
• Gareth Hanrahan. Secrets of the Ancients (Mongoose Publishing, 2010), 255.Gareth Hanrahan. Secrets of the Ancients (Mongoose Publishing, 2021), 255.