Sol -- The Sol System
and the asteroid 22 Kalliope
Presented by the Exploration Society's Institute of Planetological Natural History

Contents
Asteroid Data - Asteroid Information - Civilization on Kalliope

Asteroid Data

Indigenous Name 22 Kalliope
Classification Planetesimal Group --> Metallic Class
SemiMajor Axis 2.908 Astronomical Units
Orbital Eccentricity 0.103
Length of Year 4.9586 years
Axial Inclination °
Equatorial Diameter 181 kilometers
Density 2.03 gm/cm^3
Mass 7.36 x 1018 kg
Surface Gravity 1.0052xEarth
Rotational Period 4.148 hours
Atmospheric Pressure 0.00
Primary Gases N/A
Average Surface Temperature -169.87° F
Moons 1 = Linus, Metallic Class
Life None indigenous
Asteroid Information

Geological History
Like most bodies in the Belt, Kalliope is left over from the formation of the Solar System, a body that was prevented from joining with others by the gravitational influence of Jupiter.  Kalliope itself, though, may have once been a part of a much larger body;  certainly the asteroids in the Belt are under a constant erosional process due to collisions with other members of the Belt, and over time scales that stretch from hundreds of thousands to millions of years.  As larger bodies are broken down, collisions become more rare, less energetic.  Kalliope, at 181 kilometers in diameter, represents a mid-size range in the Belt and could still be ground down over the next few billion years.  The  presence of a moon, Linus, suggests that something just like this occurred in the distant past, with debris from a collision going into orbit.  The nearly non-existent eccentricity of Linus' orbit means that there has been plenty of time for the orbit to be rounded by Kalliope's very weak gravity.  Linus may in fact be hundreds of millions of years old.

Asteroid Structure
Although it is Metallic Class, Kalliope has a rather low density, pointing to a composition composed of approximately 30% chondritic rock.  Such asteroids are believed to be the remains of a disrupted core of a larger differentiated body.  Kalliope was first visited by a probe in 2066, one of the first targets of Amtech's unmanned reconnaissance of the Belt in their search for mineralogical wealth.  While the asteroid proved not to be highly rich in valuable metals, it nonetheless eventually warranted a manned mining presence in 2243.  The asteroid was found to be scored with many deep fissures, some of them opening up into large subsurface galleries.  Manned mining operations could easily be achieved in these fissures, which were believed to have formed from Kalliope's initial formation, and the impact that may have formed Linus.  Internally, Kalliope is largely undifferentiated, although it does sport surface and subsurface regions of less dense chondritic rock.

Active Geology
Kalliope has been an internally inert rock for much of its life time.  The last geologic activity may well have dated from its formation, when the asteroid could have experienced internal heating for several hundred thousand years.  But such a small world cannot sustain this form of activity for long, and save for the occasional energetic impact event, the asteroid has been quiet.

Linus, the Moon
Linus was discovered in a time when it was still thought to be remarkable that asteroids could have moons.  With their almost negligible gravity, few thought that such moons would last long enough to be common.  However, Linus has a nearly circular orbit, showing that it has existed long enough for the gravity of Kalliope and itself to smooth out any original eccentricity.  Linus also is deficient in metals for its size to be a fairly unappealing target.  When mining began on Kalliope, Linus was decided to be used as a base for the local administration center
.

Civilization on Kalliope

A History of 22 Kalliope
In 1852, on November 16, the British astronomer J. R. Hind discovered 22 Kalliope, one of several asteroidal discoveries credited to his name.  Aligning it with the Greek Muse of epic poetry, the asteroid eventually became just another name in a long list of minor planets that would be discovered in the next two hundred years.

It wasn't until 2001 that Kalliope returned to the astronomical mainstream when it was discovered by two independent groups of observers, one at the Keck telescope and the other at the Canada-France-Hawaii telescope, that the asteroid possessed a moon.  At this point, the idea of asteroidal moons was still young, but accepted, and only a handful of other examples were known.  This moon was named Linus, after the child of Calliope.

In 2066, the young corporation of Amtech, still striving to build a base of power and wealth and influence, sent a probe to Kalliope as a part of its greater reconnaissance of the Asteroid Belt.  The program, similar to the older Forty-Niner Program geared toward Near-Earth Asteroids, was meant to determine the mineralogical potential of hundreds of Belt objects.  Kalliope, already known to be of lesser density than other Metallic Class asteroids, was confirmed to be of somewhat lesser importance when compared to other Belt bodies.  Over the next couple of centuries, however, Amtech did initiate some minor operations via remote and unmanned craft, but over all Kalliope and Linus remained relatively untouched.

By 2243, recognizing an increase in demand for the raw materials of the Belt, and possessing the technology to extract even seemingly insignificant deposits with a profit margin, Amtech established the manned Orpheus Mining Post on Kalliope.  By this point, small communities on site were a common feature, even though nearly all of the mining was still done by automated machinery and nanofacturing processes.  Living for months at a time in the microgravity environments of asteroids, these people became a special subset of the Solar System community, and could be considered the forerunners of the Rock Jumpers.  Regardless, the growth of Orpheus proceeded at a steady pace, although it would never become as important as other major mining outposts in the Belt.  By 2265, the Orpheus Administration Center was established on Linus, and as well as being the regional center of operations, it also became the center of population for the mining staff and their families.  While a small population remained on Kalliope, by 2300 over 70% of the people lived below the surface of Linus.

The greatest event during the Human habitation of Kalliope, though, occurred during this period.  In 2276 a miscalculation in automated digging machinery broke through a tunnel wall and into a natural crevice.  While repairs to the cavern wall were being made (luckily it was an unpressurized tunnel, but one scheduled for habitation within a few weeks), workers discovered a body crumpled in the far corner of the crevice.  With a state of decay well advanced (that is, the body was quite mummified but otherwise intact due to being sheltered from sunlight and radiation by the deep crevice), and dressed in a torn and utterly unfamiliar style of space suit, it was at first believed that the body was that of an independent miner, decades old.

Later scientific dating eventually confirmed a much more remarkable truth.  While rumors had persisted for decades of strange but minor finds, artifacts of Humans existing where they shouldn't be, even strange constructions on the Moon and Mars, nothing of substance had ever been found or proven.  Until the body of this woman, deep within a crevice of the asteroid Kalliope.  The Kalliope Woman, as she became known as, was dated to 9,900 year ago, while certain elements of her suit were both made of unknown composites, and constructed in an unknown matter.  It would be years until the truth was known, but the Kalliope Woman was the first known find of a relic dating back to a period when an alien species inhabited a small part of Earth, and had culturally uplifted a small population of Humans to join them in space exploration.  Known as the Lost Civilization, this was a period of Human history that would lay in obscurity for centuries longer.  But for now, the Kalliope Woman touched off a scientific revolution in the understanding of Human history.

By and large Kalliope remained inhabited for the next several hundred years.  The population, never truly self-sufficient, waxed and waned over the years.  The outpost was finally abandoned in 2527 as the growing Hegemony was able to secure its own sources of mineral wealth, and the influence and power of Amtech steadily decreased.  However, plenty of equipment, both macro- and micro- remained left behind, and there were people that paid attention to the old pre-Hegemony records.

In 2678 a new group of people arrived at Kalliope, a people specifically born and bred to live within asteroids.  While they still needed air and proper food and an entirely bevy of microbacterial forms to survive, they were more than capable of dealing with almost zero gravity and an atmosphere filled with dust.  These were the Rock Jumpers, genetic Tweaks long ago bred to live in space and, more specifically, within asteroids.  While cultures varied greatly from asteroid to asteroid, all Jumpers shared a common heritage and maintained regular communications.

To the present day the Kalliope Community remains thriving, both through trade with other Human species and their own kind.


The primary control tower on 22 Kalliope today.  This is the largest single indication of the present Rock Jumper culture in place here;  the majority of the population can be found below the surface in vast, open-air caverns.  The tower's main purpose is to maintain communications with the rest of the Sol System, and to allow visitor ingress.

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The ArcBuilder Universe is a science fiction project established an authored and copyrighted © by John M. and Margo L. Dollan 2002-2006
Header graphic by John M. Dollan
Asteroidal images generated with Celestia
Rock Jumper controller tower generated with Celestia, model by Steve Bowers
This page first uploaded May 8, 2005
Most recent update for this page June 27, 2006