Pollos

Lore & Background

In the lore of the KSC, Pollos was catalogued early in the outer-system survey missions that followed the Duna and Eve expeditions. Its proximity to Jool's immense gravity well and its own negligible mass make it a gravitational oddity: a body so small that its escape velocity is barely enough to keep a kerbal in a spacesuit from drifting away if they jump too hard. The KSC's internal memos (as referenced in mission logs) describe it as 'a rock with ambitions,' a phrase that stuck in the engineering division.

Unlike Laythe with its oceans or Vall with its ice plains, Pollos offers no resources of practical use—no water, no fuel deposits, no atmospheric gases. Its value is purely scientific and logistical: a proving ground for low-gravity landing algorithms, a waypoint for trans-Jool trajectories, and a reminder that the Kerbol system extends far beyond the comfortable inner planets. Several early career-mode players report that their first Pollos landing was also their first total loss, a tradition the KSC has quietly accepted as part of the curriculum.

The moon's irregular shape means that 'north pole' and 'equator' are somewhat arbitrary designations. Surface features are essentially a jumble of craters, ridges, and boulder fields, with no two approaches looking alike. This makes pre-mission planning a matter of orbital geometry rather than topographic study, a stark contrast to the detailed survey maps available for Laythe or Duna.

Reader's Guide

Pollos is a small, irregular moon of Jool with no atmosphere and surface gravity so low that a kerbal in a spacesuit can essentially hop for metres. Its radius is a small fraction of Kerbin's, making it one of the tiniest landable bodies in the Kerbol system.

Surface features are limited to craters, ridges, and scattered boulder fields. There are no plains, no ice deposits, no water. The terrain is rugged and non-uniform, so landing-site selection is more about avoiding large rocks than finding flat ground.

First-landing record: The KSC's early outer-system survey programme included Pollos as a low-priority target. No single 'first' is officially celebrated; it is treated as a standard waypoint in the Jool approach corridor.

What makes it a natural target: Pollos sits relatively close to Jool, making it a convenient gravity-assist waypoint or a test bed for low-gravity landing procedures before attempting the more complex Laythe or Vall orbits. Its lack of atmosphere means no aerobraking is possible—you must arrive with precise delta-v.

What makes it a notorious trap: The combination of near-zero gravity, no atmospheric buffer, and Jool's massive gravitational pull creates a narrow window for orbital insertion. A slight error in periapsis altitude or timing can result in a hard impact or an uncontrolled escape trajectory. There is no 'second chance' with a parachute here. Plan every metre of your descent budget twice.

Did You Know?

• Because Pollos has no atmosphere, aerodynamic braking is impossible; every landing must be achieved entirely through powered descent.
• The moon's irregular, non-spherical shape means its gravitational field is not perfectly uniform, which can cause subtle trajectory perturbations for nearby spacecraft.
• In the Kerbol system, Pollos orbits closer to Jool than the larger moons Laythe and Vall, placing it deeper in Jool's gravitational well and making escape more delta-v intensive.