Celestia Forums

fyr02's NDPC Universe
(Formerly called "fyr02's fictional system")

Hi, this is fyr02, this is where I'll be posting add-ons and updates related to my fictional universe (now called NDPC). So far there are four planetary systems, each orbiting a main-sequence star, with all four stars being in a multiple star system. If you scroll down to the later posts you can view the development of the NDPC Universe.

Official NDPC Website: http://bit.ly/fyr02-ndpc

Download Instructions

To download my fictional systems - you must first download the core package - the add-on that defines all of the orbits of the parent stars - since this cannot be done separately by each add-on. It is important that you DO NOT re-name the add-on folder from "DPC", as the folder must be alphabetically above K for this to work. After you have downloaded the core package, you are then free to download any of the planetary system add-ons.

IMPORTANT NOTE! If you downloaded and installed the Kessea add-on before December 8th, 2019, you will need to uninstall the Kessea add-on, download the NDPC Core Package, and re-install it, as the old version of the Kessea add-on is NOT compatible with the NDPC core package.

NDPC Core Package Download: https://www.deviantart.com/fireon12064/art/NDPC-Core-Package-by-Fireon-822870467

IMPORTANT NOTE! These add-ons are still in development. As such some of the planetary systems might still be in development and are not available for download.

Kessea Planetary System Download: https://www.deviantart.com/fireon12064/art/Kessea ... eon-Fictional-System-809720964

Koradeon Planetary System Download: https://www.deviantart.com/fireon12064/art/Korade ... eon-Fictional-System-828531280

Karya Planetary System Download: https://www.deviantart.com/fireon12064/art/Karya- ... eon-Fictional-System-833078324

Kevona Planetary System Download: https://www.deviantart.com/fireon12064/art/Kevona ... eon-Fictional-System-822875790

[For legacy this is when development started]

Added Fyralivon.

Fyralivon, fifth planet from Kessea (Spectral Type K2V)



Added Prosnus.

Prosnus/Fyralivon I, innermost moon of Fyralivon, d=2,345 km



Added Keradreus.

Keradreus/Fyralivon II, second moon of Fyralivon, d=2,465 km



Added Sizarian.

Sizarian/Fyralivon III, smallest moon of Fyralivon, d=2,125 km



Added Denorea.

Denorea/Fyralivon IV, icy moon and fourth moon of Fyralivon, d=2,396 km



Added after 14 minutes 16 seconds:

Added Nadnova.

Nadnova/Fyralivon V, outermost moon of Fyralivon, d=2,298 km

Nice! I can see this as the relaunching of fictional solar systems for Celestia.

More snips of development....

Added Yuuzoth.

Yuuzoth, sixth planet from Kessea, d=96,096km



Added Ukrara.

Ukrara/Yuuzoth I, innermost moon of Yuuzoth, heavily cratered, orbits within a ring gap of Yuuzoth; d=2,024 km



Added after 9 hours 14 minutes:

Added Xidenia.

Xidenia/Yuuzoth II,second moon of Yuuzoth, d=2,007 km, has an atmosphere and liquid isopropanol lakes

Added Thaddiuq.

Thaddiuq/Yuuzoth III, used to have a subsurface ocean, but resonances with the other moons caused its orbit to circularize, and the ocean dried up. The only remnants are a layer of iron oxide on its surface that colors it red. d=1,894km



Added after 8 hours 20 minutes:

Added Keseren.

Keseren/Yuuzoth IV, Yuuzoth's outermost moon. d=1,974km



Added after 1 hour 30 minutes:

Added Argolea.

Argolea/Kessea e, habitable world and fourth planet of Kessea. d=12,812km, photosynthesis on Argolea is performed using red pigments

Added Runetica.

Runetica/Argolea I, barren inner moon of Argolea:



Added Trypticia.

Trypticia/Argolea II, outer moon of Argolea

Modified Texture for Argolea.

New Argolea Texture, grass changed from red to green

Added Tathanus.

Tathanus, innermost planet of Kessea, d=6424 km



Added Daxitanus.

Daxitanus, second planet of Kessea, has a thick atmosphere, d=13142 km



Added Destrenus.

Destrenus, third planet of Kessea, used to have primordial water and life but it dried up. It still retains an Earth-like atmosphere. d=12624 km



Added Kivarth.

Kivarth/Destrenus I, only moon of Destrenus, barren and cratered, d=4,251 km



Added after 56 seconds:
Only Kostranus needs to be finished now...

Hi,

Nice look !

Where is this sytem ?

If the star has spectral type equal to K2V (less bright than our sun) and the inhabited planet in fourth position, the planets are closer, right ?
What are the distances from the star for each planet ?

jujuapapa,

Here are all of the orbital info for the Kessea System. Moon inclinations are missing but that's the only thing that's not on there.
PLANETS: https://docs.google.com/spreadsheets/d/1DjwzHc-Po ... LDMHhzQcBpHNg/edit?usp=sharing
MOONS: https://docs.google.com/spreadsheets/d/1WVGbThyjf ... gT4T3zL0s0WQQ/edit?usp=sharing
Star:
RA 179.55673 deg
Dec 65.26387 deg
Distance 423 ly
Apparent Magnitude 16.96

Added after 5 hours 31 minutes:

Added Kostranus.

Kostranus, seventh, largest, and outermost planet of Kessea, has very faint rings (not visible here) and deep red color. d=132451 km



Added Yarkoth.

Yarkoth/Kostranus I, innermost and barren moon of Kostranus, d=4,046 km

You should probably update the first post with your progress.

Okay, updating the first post

After testing the given data, I found :
1. for the star
=> too small, not enough light !

2. for the inhabited planet
=> too cold !

Conclusion : it's NOT possible, just try to be coherent even for a fictional system !
@fyr02 => try to update the AppMag (example 12.0) and shorter distance for Argolea (0,46)

You realize it's a fictional system. FICTIONAL. It's not supposed to be scientifically accurate.

spacef wrote :
It's not supposed to be scientifically accurate.

Sorry Mister ? who are you ?

What are your serious arguments ?

Sorry about that. Those values are generated by Celestia and sometimes those values can by horribly off. I'll try to fix that as soon as possible

Added after 17 minutes 1 second:
EDIT: The correct Radius should be 0.9212 x Sun, or 640703.812 km. The temperature on Argolea should now be a more liveable 238 K.
I've always imagined Argolea to have thicker atmosphere than Earth.
The reason why this happened is that I roughly based Kessea off of HD 40307 and didn't realize HD 40307 was a main-sequence star and not a
K-dwarf.
If you input this it should be fixed

My identity is private. I prefer to be hidden. But there I go again, getting mad at a minor thing. It's just that I get annoyed too easily. Ah, well.

SpaceFanatic64 wrote:But there I go again, getting mad at a minor thing. It's just that I get annoyed too easily. Ah, well.

Welcome to my club.

fyr02 wrote :
The reason why this happened is that I roughly based Kessea off of HD 40307 and didn't realize HD 40307 was a main-sequence star and not a
K-dwarf.

FYI and all other young people because you wrote a little mistake.

The twice stars Kessea (K2V) and HD 40307 (K2.5V) are together K-dwarf on main-sequence stars.
Only their spectral type are lightly different.
To do simply :

To affinate the temperature we add numeric subdivisions 0 to 9.

to distinguish their life, we add a latin number to see their evolution.


Example : Sun is G2V star.

I know that, the base for Kessea was ROUGHLY HD 40307. I mainly used it because it had a habitable planet that could be used as a guidepost for Argolea.

What I meant by main-sequence star was a K star on the main sequence, instead of a object of class sdK2 or K2IV (example: K2-3)

Added after 12 minutes 20 seconds:

Added Neophus.

Neophus/Kostranus II, d=4235 km



Added Daycnea.

Daycnea/Kostranus III, d=3936 km



Added Nederra.

Nederra/Kostranus IV, d=2521 km, icy surface + 8K texture