settled-reach/wiki/star-systems/GJ-3943/index.md

GJ 3943

GJ 3943 | G-type | deep_frontier

---

System Profile

Star	k-m · 46.6 ly
Gates	2 aperture · through_route
Settlement	unsettled

---

GJ 3943 is a transitional binary — a K-dwarf primary with an M-dwarf companion in a wide orbit, producing a light environment that shifts between dim amber and dimmer red depending on the companion's position relative to the habitable zone. The effect is not dramatic from the surface of the single rocky world in the inner habitable zone. It is more accurately described as a persistent variation in the quality of the dimness — a modulation between two registers of insufficient light that the survey teams measured, noted, and found no reason to dwell on.

The habitable world is marginal. Thin atmosphere, low surface gravity, limited surface water concentrated in polar ice deposits that would require extraction infrastructure to access. The survey record from the wave_3 assessment period is brief: "within parameters for emergency habitation. Not recommended for permanent settlement at current corridor development levels." The wave_4 reassessment, conducted 120 years later, reached the same conclusion with identical language, suggesting either that the wave_4 team consulted the wave_3 record before visiting or that the system's characteristics produce the same assessment in any competent observer.

The through-route connects Pedra Seca at GJ 421B to GJ 546. This is the corridor's unsettled gap — the stretch between the last reliably provisioned system at Pedra Seca and the wave_2 anomaly at GJ 546, where settlement exists for reasons that do not follow the normal logic of frontier expansion. GJ 3943 sits in the middle of that gap. Transit vessels pass through. The horizon station processes their transit. The binary's shifting light registers on the viewport displays as a subtle color oscillation that experienced corridor travelers recognize as the marker of this particular waypoint: you have left the settled corridor behind, and what lies ahead is a different kind of territory.

Nobody has proposed settlement. The conditions do not warrant it and the corridor traffic does not require it. A community at GJ 3943 would depend entirely on imported supply through a corridor that is itself thin, fragile, and operated by settlements that have barely enough surplus to sustain themselves. The economics do not work. The survey data confirms that the economics do not work. The system remains what it has been for the entire duration of the Reach's expansion: a through-route waypoint, transited and unremarked, its binary star shifting between two shades of dim.

---

Supply Dependency

None.

---

Faction Notes

No faction presence. The horizon station is automated. Gate Corporation maintenance visits follow the standard unsettled through-route schedule — approximately once per two years, shorter than the dead-end unsettled interval because through-route gates process more transits and require more frequent calibration.

---

Celestial Bodies

Orbit	ID	Name	Type	Inhabited	Pop	Mass	Gravity	Year (d)	Day (h)	Atmo	Biome	Hydro	Economy	Settlement	Industrial
1	GJ3943b	—	planet	no	—	terrestrial	0.62g	130	26.8	thin	cold_arid	ice	—	—	—
2	GJ3943-belt	—	asteroid_belt	no	—	—	—	—	—	—	—	—	—	—	—
3	GJ3943c	—	planet	no	—	terrestrial	0.48g	400	25.4	trace	frozen	—	—	—	—
4	GJ3943d	—	planet	no	—	terrestrial	0.38g	1100	29.4	trace	frozen	ice	—	—	—
5	GJ3943e	—	planet	no	—	dwarf	0.11g	3000	22.6	none	frozen	ice	—	—	—
6	GJ3943f	—	planet	no	—	dwarf	0.08g	7600	18.2	none	frozen	ice	—	—	—
7	GJ3943g	—	planet	no	—	dwarf	0.06g	18000	15.4	none	frozen	ice	—	—	—
8	GJ3943-oort	—	oort_cloud	no	—	—	—	—	—	—	—	—	—	—	—

Stations & Facilities

ID	Name	Type	Orbits	Population	Economy	Governance	Docking	Gate	Districts
GJ3943-oort-S1	GJ 3943 Horizon	horizon	GJ3943-oort	—	transit	—	major	yes	1

Topology

• Hop Distance from Gateway: 17
• Adjacent Systems: GJ 421B, GJ 546