Posts by Sirius_Alpha

by Sirius_Alpha
03.04.2020, 04:04
Forum: Add-on releases
Topic: Extrasolar Planets (updated catalogue)
Replies: 63
Views: 57149

Re: Extrasolar Planets (updated catalogue)

Thanks for that! Do you have a better orbit I can use?
by Sirius_Alpha
02.04.2020, 03:43
Forum: Add-on development
Topic: Poll: Exoplanet Catalogue planet ordering
Replies: 14
Views: 317

Re: Poll: Exoplanet Catalogue planet ordering

Well, the results of the poll are unambiguous to say the least. The .ssc order of the planets has been changed as of the April 2020 version of the exoplanet catalogue.
by Sirius_Alpha
02.04.2020, 03:39
Forum: Add-on releases
Topic: Extrasolar Planets (updated catalogue)
Replies: 63
Views: 57149

Re: Extrasolar Planets (updated catalogue)

TESS Sector 21 planet candidates are out! Otherwise not a lot from TESS this time. Perhaps it's related to the current global situation. A huge thank-you to SevenSpheres , LukeCEL , Fafers_br and pedro_jg for identifying problems that have been fixed and new information that has been implemented. Tw...
by Sirius_Alpha
28.03.2020, 19:21
Forum: Utilities
Topic: A humble tool for creating Celestia systems
Replies: 2
Views: 156

Re: A humble tool for creating Celestia systems

Some improvements: 1. For single-transit planets (as are a frequent case for some TESS planet candidates), we sometimes do not have an orbital period or semi-major axis. But we do have a transit duration. You may now use "Transit_Dur" to specify a transit duration, which will then be used ...
by Sirius_Alpha
22.03.2020, 18:19
Forum: Utilities
Topic: A humble tool for creating Celestia systems
Replies: 2
Views: 156

Re: A humble tool for creating Celestia systems

Feedback and FAQ's.

Can you make this open source?
Sure!
CelestiaWriterSource.rar
(496.36 KiB) Downloaded 6 times
by Sirius_Alpha
22.03.2020, 17:55
Forum: Utilities
Topic: A humble tool for creating Celestia systems
Replies: 2
Views: 156

A humble tool for creating Celestia systems

Over about the past year I have been developing a programme to create an updated catalogue of extrasolar planets, here . I have been continuously improving over the past year, but its structure was very limited and cumbersome, like a cathedral built without a plan, and only as a result of continuous...
by Sirius_Alpha
17.03.2020, 20:29
Forum: Celestia Users
Topic: Pictures from Celestia
Replies: 251
Views: 51513

Re: Pictures from Celestia

MrSpace43 wrote:I know that Kepler-62 was a K-type star. I took Kepler-62 from Sirius_Alpha's exoplanet catalog, in which he incorrectly made the star a G-type.
LukeCEL wrote:We agreed that the majority of the data seem to show that the spectral type should be K, not G.
Yeah it will be a K-type star in the April release.
by Sirius_Alpha
16.03.2020, 03:09
Forum: Ideas & News
Topic: What should go in revised.stc?
Replies: 12
Views: 258

Re: What should go in revised.stc?

Because it isn't assembled from a uniform data source, and hopefully many of its contents would be in a newly assembled Gaia+Hipparcos stars.dat file at some point in the future. Clearly we are not currently at the point where dumping nearstars.stc is feasible (lest we lose α Cen as a binary system)...
by Sirius_Alpha
15.03.2020, 18:07
Forum: Ideas & News
Topic: What should go in revised.stc?
Replies: 12
Views: 258

Re: What should go in revised.stc?

Also, I think Sirius_Alpha's super-catalog is the same, I think he copies values directly from papers instead of looking at databases. But you'll have to ask him. You are precisely correct. There's trade-offs. Sometimes databases are not assembled very well, or are missing information that are cont...
by Sirius_Alpha
15.03.2020, 17:47
Forum: Add-on releases
Topic: Project Sisyphus - Texturing/painting every exoplanet known
Replies: 11
Views: 238

Re: Project Sisyphus - Texturing/painting every exoplanet known

The goal of the project is to texture every known exoplanet. ... Project Sisyphus will only do the confirmed exoplanets. Do you have a system to automate this? As you are probably aware, as of the last few years confirmed planets have been coming at or above 1 per day. This is an extraordinary amou...
by Sirius_Alpha
08.03.2020, 04:48
Forum: Bugs
Topic: Night Texture in Eclipse Bug
Replies: 2
Views: 101

Night Texture in Eclipse Bug

While testing some functionality for short-period exomoons around hot planets, I noticed the following problem: In situations where a body with a night-texture has an eclipse-shadow on it, the night-texture is not rendered in the eclipse, creating rather odd visual effects. After the eclipse has pro...
by Sirius_Alpha
07.03.2020, 17:10
Forum: Add-on development
Topic: Poll: Exoplanet Catalogue planet ordering
Replies: 14
Views: 317

Re: Poll: Exoplanet Catalogue planet ordering

Better to act by analogy with the Solar system, where is the order by distance. The Solar System is compatible with both conventions. The classical planets -- Mercury through Saturn -- have been known since antiquity and therefore there's no "discovery order" for them. Uranus and Neptune ...
by Sirius_Alpha
07.03.2020, 02:06
Forum: Add-on development
Topic: Poll: Exoplanet Catalogue planet ordering
Replies: 14
Views: 317

Poll: Exoplanet Catalogue planet ordering

In the Celestia Discord, SevenSpheres proposed changing the ordering of the planets in the Exoplanet Catalogue such that when hitting 1, 2, 3, etc... on the keyboard, rather than selecting the planets in order of discovery, it is changed to selecting them in order of the distance from the star. If t...
by Sirius_Alpha
03.03.2020, 11:28
Forum: Add-on releases
Topic: Extrasolar Planets (updated catalogue)
Replies: 63
Views: 57149

Re: Extrasolar Planets (updated catalogue)

@sirius_alpha : is it ok if I use your latest file and the ajtribrick' gaia_stars_catalog ?
Yeah there shouldn't be any conflict between the two. It's based off the TYC catalogue, and any stars in this addon that have TYC ID's have the overwrite prefix to prevent duplicates.
by Sirius_Alpha
03.03.2020, 04:55
Forum: Add-on releases
Topic: Extrasolar Planets (updated catalogue)
Replies: 63
Views: 57149

Re: Extrasolar Planets (updated catalogue)

TESS Sector 20 planet candidates are out! As well as a number of multi-sector candidates from Sectors 14-19. I have re-written the programme I use to create this project. The first was much too cumbersome after so many modifications to try to expand its capabilities that it needed a rework in order ...
by Sirius_Alpha
26.02.2020, 21:49
Forum: Add-on releases
Topic: Extrasolar Planets (updated catalogue)
Replies: 63
Views: 57149

Re: Extrasolar Planets (updated catalogue)

Sirius_Alpha: do you plan on doing "limit of knowledge" AltSurface definitions for all the planets? It's a thing that's in the original exoplanet files. I have thought about it, along with creating a companion addon with textures for extrasolar planets (based on longitudinally-resolved ma...
by Sirius_Alpha
01.02.2020, 03:45
Forum: Add-on releases
Topic: Extrasolar Planets (updated catalogue)
Replies: 63
Views: 57149

Re: Extrasolar Planets (updated catalogue)

TESS Sector 19 planets are out! Including a possible planet candidate transiting the white dwarf LP 141-14. Also, TESS has its first confirmed ~Earth-sized habitable planet candidate at TOI-700. One of the ExoFOP candidate dumps a few months ago included TOI-1338, a system that we already knew was a...
by Sirius_Alpha
26.01.2020, 21:49
Forum: Celestia Users
Topic: Another Celestia Discord
Replies: 30
Views: 622

Re: Another Celestia Discord

Hi, Redacted here. The point about the discord's owner having sailed off the edge of the earth and being effectively unreachable is a very strong argument. As for the user nussun , she is a problematic individual who spent much of her interaction with the discord creating problems and making many ot...
by Sirius_Alpha
12.01.2020, 18:34
Forum: Add-on releases
Topic: Updated stars.dat including Gaia DR2 data (update 2020-02-15)
Replies: 49
Views: 1593

Re: Updated stars.dat including Gaia DR2 data (update 2020-02-15)

This is absolutely astounding. The structure of the local Galaxy is very visible. You can see clusters very easily now from afar. The older poor-accuracy parallaxes and photometric distances were so bad that you really couldn't see clusters beyond the Pleaides. But now all kinds of detail and cluste...

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