DM 34 2342

DM 34 2342 System
Position: Primary (A)
Spectral Class: K4 V
Color: Orange
Type: Main Sequence Star
Coordinates: -20.8X, -3.6Y, 14.3Z
Mass: 0.60 Sol
Absolute Bolometric Magnitude: 8.2
Effective Surface Temperature: 4300°K
Luminosity: 0.44.Sol
Radius: 0.63.Sol
Life Zone: 0.58 au – 0.86 au
Optimum Distance: 0.69 au

The Star

SYSTEM DATA
The central sun of the system has been the recipient of more scrutiny than any other star in the French Arm. Evidence found on Dedre, Kimanjano’s moon, and Tanburg, the second planet, as well as on the other moons, suggests that, some half a billion years ago, the sun flared, temporarily doubling its normal output. Much of the surfaces of these worlds literally melted. Indications are that the flare only lasted a few hours, and there are no other records of abnormalities in the intervening period. Solar observations have been positioned in near orbit in hopes of learning the cause of this irregularity, which would spell certain doom for the colony if it recurred, but the star appears to be perfectly normal.

The primary is an older main sequence star fitting well within the standard range for a K4. It shows no unusual or aberrant flare or prominence activity. Its 38 year sunspot cycle is typical for stars of its age and composition. No factor can be found to explain its sudden flare. Some theories postulate the close approach of a rogue brown dwarf which caused the flare, but the orbits of the planets would have been disturbed by such an event. One popular theory suggests the impact of a quantum black hole. However, this is not substantiated by any observable wobble in orbit or loss of angular momentum.

The rest of the solar system exhibits the normality manifested by its sun. The planets all lie within 0.5 degrees of the ecliptic plane. There are a number of short period comets, as well as extremely long period ones. The lack of median period cometary material has been attributed to the flare. The outer Oort cloud, a spherical cloud of material left over from the formation of the solar system, is unusually sparse. This has led to some speculation of recurrent solar flare depleting it by boil-off, but this has not been confirmed.

The Planets

Of the eight planets in-system, only two are terrestrials composed predominantly of rock and metals. These are Kimanjano and the second planet, Tamburg.

Tamburg is 5,280 kilometers in diameter and has a rocky core. Its thin atmosphere is largely carbon dioxide, though traces of neon and argon are also present. It orbits at a distance of 181 million kilometers, just beyond the life zone. There are indications that liquid water may have once been present though it has long since evaporated. Its two polar caps consist of carbon dioxide ice. The surface is primarily basaltic. Resource scans have indicated useful amounts of iron, manganese, and other industrial metals, but the cost of acquiring them has been deemed too excessive. Tamburg has no moons.

The other planets of the system are gas giants. The collection is typical, all having rings of collected material and hosting at least two major moons and a number of asteroidal bodies. They are, in order outward, Setanne, Nivith, Roubaix, and Lyth.

The largest, Setanne, is 98,000 kilometers in diameter, slightly smaller than Jupiter. The smallest, Lyth, is a little more than 44,000 kilometers in diameter. All sport massive radiation belts, although Lyth’s is only about one-tenth as strong as currently accepted theory allows. Research is ongoing as to the reason behind the anomaly; an automated station has been set up on the inner moon for this purpose. It is visited periodically by researchers to calibrate instruments and collect readings. So far, studies indicate Lyth’s core is unusually lacking in metallic content. This condition, combined with a slow rotation (about 28.5 hours), seems to be the principle cause for its modest radiation belts.

Setanne and Nivith radiate in the infrared, indicating internal heat production that is common in this size range. Their heat production is probably due to the “helium raindrop” effect which powers so many radiating gas giants. No direct internal observations have been made of any of these planets, as they seem to fit well within our basic understanding of such worlds. Some surprises may still await further observation, however.

DM 34 2342

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