The Valtamir system is a quintuple star system in Via Sagittaria, 8 light years from the Helyar System. It is composed of 5 stars, which are Valtamir, Yarres, Issara, Antedren and Heulao. A sixth star, Tellauxim, is getting alarmingly close to Valtamir, and may be able to disrupt it in the near future. However, a project, Project ProVal, is diverting and slowing down Tellauxim so that it does not harm Valtamir in any manner. Valtamir, the most massive star in this system, has recently blown off a planetary nebula, sterilising many worlds in its system. The planetary nebula is still just visible from the outside as a very dark pink and green collection of veils of ionised gases.
Overview
The Valtamir System is one of the most scientifically important systems in the vicinity of Helyar. It presents many strange, exotic worlds, such as super-hot gas dwarfs, scorching mega-earths with hydrocarbon hazes, worlds with ammonia oceans and giant ice caps, and most importantly of all, a habitable planet, Shallan.
The Valtamir system was colonised early on in Humanity's interstellar adventures, due to its value, both scientific and economic. It also has a rich history of vast planetary migration, huge global warmings and even the death of an entire star, which have all come together to shape a vast system of 24 planets, all with their own stories to tell.
Properties
Orbital Properties
The Valtamir System as a whole is split into 2 subsystems, the Valtarres subsystem and the Issantulao system. The Valtarres subsystem contains Valtamir and Yarres, a red dwarf. The two orbit each other in around 16 years and are around 6 AU apart. The Issantulo contains Issara, an orange dwarf, and another subsystem, the Antulao subsubsystem. Issara and the Antulao subsubsystem are around 150 AU apart and take around 2000 years to orbit each other. The Antulao subsubsystem itself is comprised of a close binary between Antedren, a red dwarf, and Heulao, an L type brown dwarf, which orbit each other in a little over 160 days. All of the stars in these subsystems contain planets.
Then there is Tellauxim, a rogue brown dwarf careening through space. In the last few hundred years, it has become a threat to the stability of Valtamir. Currently, it is being slowed down and will locate itself to a position near Valtamir, on a normal orbit around Sagittarius A*. Tellauxim itself has 3 planets.
Stellar Properties
The Valtamir System formed with Valtamir as by far the most massive star, with around 2.7 solar masses, a late B type star. It died around 100 million years ago, at 2 billion years old. Now it is a white dwarf. Its death threw off some of Yarres' outer layers, but not enough to visibly change any of its properties. Issara, Antedren and Heulao were not affected by Valtamir's death.
The system is quite metal-rich, allowing the formation of many small rocky worlds.
Valtamir-Yarres subsystem
Valtamir: a young DA1.6 white dwarf. Valtamir has a very faint planetary nebula surrounding it. Valtamir's worlds have very stable orbits, as they are all in laplace resonances.
| Image | Name | Description | Population |
|---|---|---|---|
| Tegris | Tegris is a charred world, only around 5,000 km in diameter. The closest planet of Valtamir, Tegris has been through major atmosphere loss ever since it formed, especially when Valtamir threw off its outer layers and died around 90 million years ago. Tegris is still extremely hot, but does harbor many important materials. | ~6,000 scientists and miners | |
| Cerleor | Cerleor is a deep red gas dwarf, constantly losing its atmosphere to Valtamir's extremely high temperature and solar wind. Like Tegris, it has gone through major atmosphere loss, starting out as a super-neptune but losing almost all of its old atmosphere to Valtamir. Only some of it remains, in the form of dark sooty clouds rich in alkali metals and alkali metals, which are extremely hot. | ~1,000 scientists and miners | |
| Kedro | Kedro is probably the least interesting "planet" of Valtamir. It is the smallest planet, so small that it classifies as a dwarf planet. Kedro was always small, but it was reduced even more when Valtamir died. Now, Kedro is just a small iron core with a thin mantle above it. Very hot and tectonically dead, there is nothing very interesting about Kedro, other than its inclined orbit, which has been the result of many planetary interactions with the inner worlds and Azmodan. | ~51,000 random people at all times | |
| Azmodan | Alongside Occamora, Azmodan may be the most interesting planet in the Valtamir-Yarres subsystem. It is a superterra, and measures 23325 km in diameter. This leads to a gravity of over 40 m/sec, the strongest gravity in the entire Valtamir system. Due to this, Azmodan has always had a thick atmosphere, but just like Tegris and Cerleor, it has been thinned drastically. Today, Azmodan still holds an extremely thick atmosphere, but it is no match compared to what it used to be like. When it finished forming, Azmodan was a great super-jupiter, many times Jupiter's mass. But as Valtamir died, much of the atmosphere was stripped, leaving only the very bottom layers still intact. These rose up and gave Azmodan a new atmosphere, and for the first time since its formation, Azmodan's surface was at least partly visible. Today, it roasts under the pressure of over 10,000 atm, mostly composed of hydrocarbons, which make an orange haze which stretches for hundreds of kilometres. Azmodan has 1 asteroid moon, Skolus, once the shepherd moon of Azmodan's long gone rings. | ~14,000 scientists and miners | |
| Occamora | Similarly to Azmodan, Occamora is a superterra, and also a chthonian planet. With all of its mass under a sphere 20,967 km across, it is less dense than Azmodan, having a significant amount of its bulk made of water and other volatiles, including hydrocarbons. Occamora has a thinner atmosphere than Azmodan, which is mostly composed of water vapour, hydrocarbons and carbon dioxide, along with a global ocean of semi-supercritical, semi-liquid ocean of water and long hydrocarbons. Occamora was once a super-neptune in a 2:1 resonance with the early Azmodan. Now it exists in a 7:2 resonance, due to Valtamir's death destabilizing their orbits for some time. Occamora has 2 moons, which are:
|
30,000 scientists and miners | |
| Dalnil | The only gas giant orbiting Valtamir, Dalnil has been reduced to a sub-neptune through Valtamir's death. Its deep blue colouring is a hint to the violent world beneath the blue clouds. Large pieces of silica whizz through the clouds, racing around Dalnil in less than an hour. It is divided into 5 bands, two dark blue ones on a lighter blue backdrop, with many smaller white "scooters" between them. Dalnil is home to several mining operations, extracting silicon and other gases from its atmosphere. Dalnil has 3 moons, which are:
|
20,000 scientists and miners | |
| Anurpen | The furthest world from Valtamir, Anurpen was once a cool, small desert world with ice caps. It was dry, save for a lot of groundwater and large ice caps. Now, Anurpen has been terraformed by humans and it's a thriving ecumenopolis, a testament that not even the death of entire stars is enough to completely sterilise worlds. | 24,520,000,000 inhabitants |
Yarres: A cool red dwarf orbiting Valtamir every 16 years or so.
| Image | Name | Description | Population |
|---|---|---|---|
| Aboll | Aboll is a tidally locked rocky world orbiting Yarres. Nothing special about it. | 14 million | |
| Vetra | Vetra is an interesting world. Earlier in its life, it used to have flowing liquid, likely water or ammonia. But when Valtamir died, these liquids were carried off with its outer layers, leaving Vetra completely barren. Today, only hints of these past rivers and lakes exist, peppered all across the planet. A terraforming project is under consideration. | 33 million |