Heroni (SM 3017) (world)

Heroni/Rhylanor (Spinward Marches 3017) Milieu 1116 E7A0614-8 Starport E Frontier - no facilities Size 7 Medium (11,200 km, 0.70g - 0.94g) Atmosphere A Exotic Hydrographics 0 Desert World 0% Population 6 Moderate (8 million) Government 1 Company/Corporation Law 4 Moderate Law (no light assault weapons) Tech Level 8 Pre-Stellar (superconductors)
See also	UWP
style="width: 220px; height: 250px;" Jump map from Travellermap.com
System Details
Primary	G5 V
Worlds	8
Gas Giants	0
Planetoid Belts	2
Cultural Details
Government	Company or Corporation
Law Level	Moderate
Cultural Extension	4336
Army Size (BEs)	2
Economic Details
Technology Level	8
Economic Extension	A51-5 Resources A Abundant Labor 5 Moderate (800 thousand) Infrastructure 1 Extremely limited Efficiency -5 Extremely poor
Importance Extension	-3
Resource Units	25
GWP (BCr)	11
World Trade Number	3
Trade Volume (MCr/year)	0
Starport Details
Classification	Class-E
Port Size	0
Building Capacity (Tons)	6,400
Port employees	0
Port passengers (annual)	0

Heroni has a tainted, unbreatheable atmosphere and little available surface water. The system has a population between 10,000 and 10 million, lacking the industrial base to be completely self-supporting. It is a member of Third Imperium in the Rhylanor Subsector of Spinward Marches Sector and in the Domain of Deneb. Heroni, as a member world of the Third Imperium, holds the estate of an Imperial knight, a member of the Imperial Landed Nobility who acts as an Imperial representative to the world.

• Heroni is a member of the Spinward Main.

Description (Astrography & Planetology)

Stars

Heroni has a solitary primary star.

• It is a yellow main sequence.

Heroni has a solitary primary star.

Primary
	Type	Category		Mass (Sol)	Temperature (K)	Luminosity
	G5 V	Main Sequence (Dwarf)		0.98	5600 - 5660	0.93173
	Unit	Diameter	Safe Distance	Habitable Zone	Jump Shadow	M-Drive Limit
	AU	0.0091	0.0801	0.91 - 1.63	0.91	9.1
	Orbit #	*	*	3	3	7
	Remarks		None

System Data

The worlds of the system have been surveyed. They consist of:

• The mainworld.
• x5 secondary rocky worlds.
• x2 planetoid belts.

Mainworld Data

Mainworld Size (S)

Heroni is a Meso World between 10,400km and 12,000km in diameter. The world has a standard gravity between 0.7G and 0.9G. The horizon will appear about 4.7km away.

Mainworld Atmosphere (A)

Heroni has an Exotic Atmosphere and possesses an unusual gas mix which requires the use of oxygen tanks. Additionally, protective suits, while not necessary, are recommended. TL–8 or more advanced survival gear is required to settle this world.

Mainworld Hydrosphere (H)

Heroni has no free-standing water or ice on the surface. What little water or ice exists is heavily tainted with other substances, which makes it dangerous, corrosive, or toxic. Wilderness refueling isn't possible on this world. Water for the inhabitants needs to be imported and extensively recycled. These worlds are Hell Worlds.

Mainworld Geography and Topography

No centrally held map of the world exists within AAB Library Data records.

(Blank map, predominantly dry world.)

---

IISS GURPS Astrographics Survey

3017 Heroni (Imperial)

Starport: Class I.

Diameter: 6,868 miles (11,000 km).
Atmosphere: Exotic (very high nitrogen content, at levels sufficient to cause nitrogen narcosis in most humans).
Hydrographics: None.
Climate: Normal.
Population: 3.3 million.
Government: Corporate (Heroni MinCorp).
Control Level: 3.
Tech Level: 6.
World Trade Number: 3.

History & Background (Dossier)

In addition to the City of Heroni, the other major settlement on Heroni is Lunapi Ina.

The mining equipment used on the planet's surface is imported and of a higher Tech Level than the mainworld could produce by itself.

References & Contributors (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), 30-31.
• Marc Miller. The Spinward Marches Campaign (Game Designers Workshop, 1985), 18-19.
• Marc Miller. Imperial Encyclopedia (Game Designers Workshop, 1987), 94-100. (UWP only)
• Rob Caswell. "Domain of Deneb: Sector Data." MegaTraveller Journal 3 (1992): 47-58. (UWP only)
• Dave Nilsen. The Regency Sourcebook (Game Designers Workshop, 1995), 43. (UWP only)
• Martin Dougherty, Neil Frier. Behind the Claw (Steve Jackson Games, 1998), 109.
• Mike West. The Spinward States (Avenger Enterprises, 2008), 104. (UWP only)
• Martin Dougherty. The Spinward Marches (Mongoose Publishing, 2008), .
• Martin Dougherty. Behind the Claw (Mongoose Publishing, 2019), 74-79. (UWP only)