Pyros

Pyros

Orbital characteristics
Mass (Kg)	5.88E+24
Radius (Km)	6,576
Solar Day (h)	14.1
Orbital Period (days)	336
Semi-Major Axis (Km)	1.31E+08
Periapsis (AU)	.876
Apoapsis (AU)	.878
Albedo	.25
Surface Temperature (K)	241
Surface Gravity (m/s^2)	9.07
Axial Tile (degrees)	21.1
Inclination (degrees)	1.5
Orbital Speed (Km/s)	28.4
Satellites = None; faint silicate dust rings
Atmospheric Characteristics
Albedo	0.25
Atmosphere Mass (kg)	2.5E+16
Mass of Air Column (kg)	45.9989043192718
Surface Density (kg/m3)	0.0155
Mean Molecular Weight Dry Air (g/mol)	43.34
Degrees of Freedom	7
Specific Heat Const Pressure (Cv)	863.292096215967
Lapse Rate Dry Adiabatic (K/m)	0.0105051988912371
Emissivity IR	1
Visual Temperature (K)	256.321575821142
Effective Temperature (K)	202.609917362891
Surface Pressure (lb/in2)	417.166601122184
Co2PPMV	389.85
Co2 Emissions (Metric Ton per Capita)	N/A
Heat Capacity of Land J/(kg K)	1420.2
Heat Capacity of Sea J/(kg K)	N/A

Pyros is the planet third closest to the star Atos. Although long regarded as a satellite-less terrestrial world, later survey observations confirmed the presence of a faint equatorial ring system composed primarily of fine silicate dust, basaltic grains, and pale mineral-rich particulate matter. The rings are extremely diffuse compared to the prominent ring systems of the outer planets, appearing only as a narrow, sandy-grey band under favorable illumination. Their coloration broadly corresponds to the surface of Pyros itself, with muted tones of ash-grey, tan, beige, charcoal, and frost-pale mineral dust.

Ring System

The rings of Pyros extend overhead in this photo - taken by a top-secret New Zimian rover - on the Pyrotian surface.

Pyros possesses a faint and comparatively narrow ring system encircling the planet near its equatorial plane. Unlike the broad, highly reflective rings associated with larger gas giants, the Pyrotian rings are composed of sparse particulate material and are generally difficult to observe except under favorable lighting conditions. Survey imagery indicates that the rings are dominated by sand-sized and dust-sized silicate grains, mixed with darker basaltic fragments and lighter mineral particles similar in color to the planet's exposed plains, volcanic fields, and frost-bright deposits.

The prevailing interpretation among researchers is that the ring system represents the remains of an ancient minor satellite or captured asteroid which was disrupted by tidal stress, collision, or gradual fragmentation. Larger fragments appear either to have fallen into Pyros, escaped stable orbit, or been reduced over time into the present diffuse band of debris. Because no large surviving natural satellites are known, the ring system is regarded as the principal circumplanetary structure of Pyros rather than as part of a wider moon system.

Visually, the rings display a muted palette of pale beige, taupe, ashen grey, charcoal, and off-white material. This coloration closely corresponds to the observed surface of Pyros, particularly its mixture of light dusty plains, dark volcanic or basaltic terrain, and frost-washed polar deposits. The correspondence has led some researchers to suggest that a portion of the ring material may have originated from ancient impact ejecta launched from the Pyrotian surface, although this remains less widely accepted than the disrupted-moonlet hypothesis.

The rings are not believed to be especially massive or permanent on geological timescales. Their fine particulate composition makes them vulnerable to gradual orbital decay, solar radiation effects, and collisional grinding. Nevertheless, the continued presence of the ring system suggests either that the disruption event was relatively recent in astronomical terms, or that the rings are intermittently replenished by micrometeorite impacts on small embedded fragments too minor to be classified as true satellites.

North Polar Regions

A labelled map of the surface of Pyros.

The surface of the planet Eos as mapped by IASS-00P1, unlabelled.

The North Polar Regions of Pyros are marked by broad dark expanses broken by lighter bands, frost-bright patches, and scattered exposed uplands. In the far northwest, the severe, wind-darkened tract known as the Orebele Marches stretches across one of the most austere parts of the hemisphere, its surface appearing ancient, dry, and deeply weathered. East of this, the pale and haze-softened zone called Liora Veil stands out as one of the most muted and frost-washed northern regions, where bright material appears to gather over darker ground and blur the sharper underlying relief. Farther east still, the isolated prominence designated Ignisaeum Mons rises distinctly from the surrounding dark terrain, while much of the roughened north-central interior is grouped under the name High Flamewarden Plateau, a region of broken uplands, cratered surfaces, and uneven relief.

From orbit, much of the far north appears covered in dark volcanic or basaltic terrain, with pale surface material collecting in colder basins, ridgelines, and wind-shaped deposits. The region has a stark, weathered appearance, with long tonal gradients and softened surface textures suggesting frost movement, dust transport, and repeated seasonal accumulation. In several places, the northern landscapes appear rough and uneven, with escarpments, cratered ground, and broken highland surfaces emerging through darker plains. Small bright patches near the polar cap may represent persistent frost or ice laid down where temperatures remain lowest, while the surrounding dark ground gives the impression of exposed rock shaped by wind, cold, and age. These characteristics are especially evident across the Orebele Marches and the High Flamewarden Plateau, whereas Liora Veil and Ignisaeum Mons mark some of the most visually distinct northern anomalies.

The overall character of the north is severe and ancient, with large stretches of land that appear dry, cold, and only lightly modified except where frost and fine material have gathered. Taken together, the Orebele Marches, Liora Veil, Ignisaeum Mons, and the High Flamewarden Plateau give the northern hemisphere a more localized geography, distinguishing its darkest polar tracts, its frost-softened northern veil, and its isolated highland prominences within the broader cold desert landscape.

Equatorial Regions

The Equatorial Regions of Pyros contain the broadest range of terrain on the planet. Large brown and tan plains dominate much of the belt, interrupted by dark volcanic fields, crater chains, eroded uplands, and isolated bright deposits. Across this region, the surface appears dry, windswept, and mineral-rich, with extensive stretches of exposed ground that show both old impacts and later geological reworking. Much of this central zone is designated the Pyreskan Expanse, a broad equatorial province whose mixed brown plains and darker mineral-rich surfaces give Pyros much of its recognizable appearance from orbit. Along its northern edge rises the bright elevated formation called Azos Crown, one of the most striking luminous highland structures on the planet, while the smoother plain to its west is often termed Alev Planitia. Farther west, the transitional boundary between darker ground and lighter uplands is known as Helcanor Verge, beyond which lies the large pale depression called the Perpetual Flame Basin.

Some areas are smooth and open, while others are broken by ridges, collapsed margins, and long scarps. In the western equatorial region, the long, cut-like dark feature extending across the lower belt is commonly designated the Blade of Embers Chasma, a name applied to one of the clearest linear depressions visible on the planet’s surface. Toward the east-central equatorial zone, the circular volcanic-looking depression known as Flamewright Patera stands out amid rougher surrounding terrain, while the broad elevated massif to its north is referred to as Ignis Aeternum Rise. Beyond this, the steep and visually abrupt eastern relief is known as Ignis Scarp, one of the sharpest escarpment-like transitions visible in the equatorial belt. South and southeast of the central uplands, the broad transition zone called Ardashir Reach marks the gradual shift toward darker and more fractured lower-latitude terrain, and the long broken fracture system farther east is known as the Aprobellian Rift.

The combination of cratered terrain, dark volcanic-looking ground, and bright sedimentary or icy deposits gives the equatorial regions a layered and complex appearance. Atmospheric movement also seems to have played a major role in shaping the equatorial landscape. Broad haze-like streaks, dust plumes, and soft transitions between darker and lighter terrain suggest active redistribution of fine surface material. These processes appear to have blurred older boundaries in some places while leaving sharper relief exposed in others. The named regions reflect that same complexity: the Pyreskan Expanse and Alev Planitia denote broad open terrain, Azos Crown and Ignis Aeternum Rise refer to elevated and visually dominant structures, and Flamewright Patera, Blade of Embers Chasma, Perpetual Flame Basin, and Aprobellian Rift correspond to some of the most distinct depressions, cuts, and fractured zones visible on the mapped surface.

Taken together, the equatorial regions give Pyros much of its visual identity: a cold desert world of cratered plains, volcanic scars, wind-shaped deposits, and mineral-stained uplands. In modern mapped usage, that identity is expressed above all through the Pyreskan Expanse and its surrounding subregions, which provide a more precise vocabulary for the planet’s most varied and visually prominent terrain.

Southern Polar Regions

The Southern Polar Regions of Pyros are brighter and more heavily patterned than much of the north, with sweeping frost-covered terrain extending across wide portions of the hemisphere. Large white and pale blue-white formations appear spread across ridges, basins, and deeply incised channels, creating a landscape shaped by long-term cold accumulation and flow. North of the brightest southern ice systems lies the darker lowland known as Sirune Deeps, a subdued southern-central basin whose shadowed appearance contrasts sharply with the more reflective terrain farther south. To the southwest, the rougher vent-marked terrain called Emberkeeper Fumaroles occupies one of the clearest transitional zones between darker exposed ground and the brighter southern frost fields. In the far southeast, the branching fracture systems descending toward the polar ice are designated Torch-Patron Fossae, where elongated cuts and broken channels give the terrain a distinctly fragmented appearance.

The southern polar zone has a more visibly stratified appearance, with layered ice-rich surfaces alternating with darker exposed ground and sediment-darkened margins. Much of the southern hemisphere suggests strong interaction between frost, ice, and underlying topography. Bright material appears pooled in lowlands and stretched along valley systems, while darker ridges and rocky protrusions break through in long bands and clusters. Some areas show branching or fan-like patterns that resemble glacial flow, erosion, or repeated freeze-thaw reshaping over very long periods. These processes are especially legible where Sirune Deeps gives way to brighter southern accumulations, where Emberkeeper Fumaroles occupies rougher low-latitude ground west of the southern ice, and where Torch-Patron Fossae marks one of the most conspicuous broken channel systems toward the southeastern margin.

These southern deposits give the pole a more active visual texture, even where the environment itself remains extremely cold and dry. The far south stands out as one of the clearest records of Pyros’s climatic extremes. Its ice-rich surfaces, exposed scarps, and rugged transitions between bright and dark terrain suggest a region where cold-trapped material has persisted across ages while the surrounding land remained open to wind, dust, and erosion. As seen from orbit, the southern polar regions give Pyros a distinctly austere character: cold, scarred, and shaped by the meeting of rock, frost, and thin air. The named southern regions—Sirune Deeps, Emberkeeper Fumaroles, and Torch-Patron Fossae—help distinguish the principal basin, vent field, and fracture system within this broader polar environment.

Ongoing Research

Research by Passio-Corum

Research Probes

IASS-00P1

IASS-00P1

Orbital characteristics
Mass (Kg)	478
Radius (Km)	1.5(m)
Solar Day (h)	N/A
Orbital Period (days)	35
Semi-Major Axis (Km)	452,255
Periapsis (AU)	.00284
Apoapsis (AU)	.00321
Albedo	N/A
Surface Temperature (K)	221
Surface Gravity (m/s^2)	.00000000142
Axial Tilt (degrees)	31
Inclination (degrees)	27.7
Orbital Speed (Km/s)	27.7

The second of the research probes to be launched as part of the Inner Atos System Survey, the IASS-00P1 was deployed on 36/1/35 PSSC on a mission to gather geographic and atmospheric data relating to the Pyrotian surface, and to investigate the possibility of life or the potential for settlement on Pyros. Foremost among the missions of the IASS-00P1 is to gather enough data to allow researchers to compile a detailed map of the planet.

IASS-00P1 is expected to arrive in orbit around Pyros around the middle of the year 37 PSSC. The probe, which is designed to orbit Pyros at a distance of around 440,000 km from the planet, will collect data for at least four years.

Mythology

In the religious cosmology of the Reformed Stripping Path, Pyros is venerated as both a planetary body and the divine personification of fire, passion, and creative transformation. As the Planetary Divine associated with the third planet from the star Atos, Pyros embodies the dual nature of fire as both a destructive and generative force, central to cycles of purification, renewal, and inspiration.

According to canonical doctrine, Pyros emerged from the primordial ignition of the cosmos, carrying within him the flame that would animate matter and awaken spirit. Unlike the contemplative stillness attributed to deities such as Micras, Pyros is dynamic and catalytic, representing the forces that drive change and compel action. His presence is interpreted as both trial and promise—testing mortals through adversity while offering the energy required to overcome it.

Mythological narratives such as the Hymn of Pyros recount his interactions with mortals who seek to harness his flame, often revealing the consequences of unchecked ambition alongside the potential for creative transcendence. These stories emphasize the necessity of humility and intent in channeling divine fire.

Worship of Pyros is centered in cities such as Pyralis, where cults like the Ignis Aeternum maintain the Perpetual Flame as a symbol of his enduring presence. Festivals held in his honor, including Alev Günü and Orebellion, reflect his influence on Bassaridian cultural life, celebrating artistic innovation, purification rites, and the transformative power of passion. Through these traditions, Pyros is upheld as a divine agent of renewal—guiding his followers to forge meaning from hardship and to pursue their aspirations with vigor and clarity.