Ra'sen

✹ • • • • • ◦ • ◦ ) ⦿..... ⦿... ⦾.. )

Tau Ceti, known to the skae as ^Ra/_sen, is the home system of the skae and their homeworld Ra'na. At the center of the system is the G8V-type yellow dwarf star ^Ra/_sen, the only star in the system, surrounded by eleven major planets. The skae inhabit every major body in the system, having rapidly expanded into space following first contact with humanity.

Astrography

Location

The Ra'sen system is close to the heart of known space, in the southern celestial hemisphere. It is unusually close to the red dwarf system Hasek'urun, known to humans as YZ Ceti, at just under two lightyears away. It is also a very well-connected system, having jump links to twelve other systems: Hasek'urun, Gliese 65, Ran, van Maanen's Star, Ku'sen, Chel'sen, Ra, Gliese 1005, Hal'sen, Teegarden's Star, Othrys, and Erebus.

Structure

The Ra'sen system is highly unusual for a higher-mass star in that its inner planets are packed into a complex, dynamically-stable resonance chain. No less than six large telluric planets and two superoceanic planets are crammed into the space between the star itself and the outer edge of its habitable zone. Beyond this is a large region of asteroidal and cometary debris, shepherded into place by the three giant worlds that comprise the outer system.
SYSTEM OUTLINE

Ra'sen / Tau Ceti

• Ash'eol* (s)
• Ash'kar* (s)
• Hak'chi* (d)
• Kin'su* (d)
• Kin'ma* (d)
• Pon'shol* (o)
• Ra'na^Δ (tr)
  • Shel'na* (mp)
  • Ao'na* (mp)
• Pon'whe* (th)
  • Whe’ren* (mp)
  • Whe’nul* (mp)
  • Whe’tu* (mp)
  • Whe’lo* (mp)
{Pak’bemet}
• Aet'hyon* (j)
  • Chet'se* (s)
  • Pal'kon* (e)
  • Tor'shal* (c)
  • Sehk'nil* (c)
  • Ke'mir* (q)
• Aet’el (j)
  • El’ten* (e)
  • El’lin* (e)
  • El’nesh* (e)
• Lan'ful (n)
  • Fen’tel* (e)
  • Lor’he* (e)
{Pak’batun}

Ecosystem

The Ra'sen system is the origin point of the Ranagenia, an ancient and highly diverse lineage of carbon-based organisms from Ra'na. Ranagenids share many characteristics with other water-solvent, oxygen-CO₂ biospheres like Terragenids and Hemeragenids, but are not especially widespread in the cosmos due to the necessity of the relatively rare element vanadium as an enzymatic cofactor.

Archive Data

DESIGNATIONS

Official native name

^Ra/_sen (alternatively spelled Ra'sen)

Bayer designation

τ Ceti

UNAC Local Star Catalogue designation

USC 024

Other designations

• GJ 71
• HIP 8102
• AM 125
• EZN 81
• KAZ 52

SYSTEM CHARACTERISTICS

Location

Local Interstellar Cloud, Local Bubble, Orion–Cygnus Arm, Milky Way, Virgo Supercluster

Sol-relative coordinates

RA 01h 44m 04.1s
DEC -15° 56' 15"
DIST 11.91 ly

Proximal system

Hasek'urun (1.62 ly)

System diameter (farthest orbital)

1.4e+11 km (Pak'batun furthest extent)

System diameter (heliopause)

2.1e+10 km

System mass

0.785 M_sol

Major planets

11

Biotic planetoids

2

Inhabited planetoids

161

STELLAR CHARACTERISTICS

Central star

^Ra/_sen

Stellar type

G8V

Mass

0.69 M_Sol

Temperature

5344 K

Luminosity

0.5 L_Sol

Age

9.2 Gyr

HABITATION INFORMATION

Total population

10.2 billion

Species demographics

• 96% skae (native)
• 3% human
• 1% Other

Demonym

Ra'senasht

Administrated by

Ra'na Interglobal Council

ERPA Restriction Level

II

Reality Check

The real Tau Ceti system has four confirmed planets, four unconfirmed planet candidates, and a known dense debris disk.