Posts by Sirius_Alpha

by Sirius_Alpha
04.12.2019, 01:29
Forum: Celestia Users
Topic: Amalthea
Replies: 16
Views: 2661

Re: Amalthea

Joey P. , the green and blue regions in the graph above only denote where the spectra of those asteroids tend to lie, not the actual colour of the asteroids. For all three asteroid spectral types, they are varying degrees of red (their brightness increases with wavelength). The higher the slope, th...
by Sirius_Alpha
01.12.2019, 03:37
Forum: Add-on releases
Topic: Extrasolar Planets (updated catalogue)
Replies: 47
Views: 54323

Re: Extrasolar Planets (updated catalogue)

TESS Sector 16 planets are out! There are also candidates from southern hemisphere sectors that I'm guessing are continuing to be found as the data continues to be analyzed. Long-period planets in sector overlaps are being found, such as TOI-1338 for example with a ~71 day period. This update also i...
by Sirius_Alpha
23.11.2019, 18:51
Forum: Textures
Topic: Updating exoplanet textures
Replies: 25
Views: 569

Re: Updating exoplanet textures

SevenSpheres wrote:It's "SevenSpheres", which is supposed to be a reference to the TRAPPIST-1 system. Not "Steven".
I'm terribly sorry about that.
by Sirius_Alpha
23.11.2019, 15:07
Forum: Textures
Topic: Updating exoplanet textures
Replies: 25
Views: 569

Re: Updating exoplanet textures

I really appreciate the kind words, StevenSpheres . Another possibility to expand out the range of textures are the possibility of transitional textures. Of course the insolation a planet receives, for the simple case of a non-inclined planet (which I assume we'll be assuming, lacking information to...
by Sirius_Alpha
23.11.2019, 14:24
Forum: Petit Bistro Entropy
Topic: This site doesn't have a GANGNAM STYLE post ...
Replies: 21
Views: 8093

Re: This site doesn't have a GANGNAM STYLE post ...

Sorry if I'm necromancing, but... Walk me through what happened here in your mind. You started to respond to a thread, knowing you were necro-posting, and you even state that you were sorry you were doing it. So what did you do? Did you .... you know... not contribute a post to a decade-old thread?...
by Sirius_Alpha
10.11.2019, 20:08
Forum: Announcements
Topic: Website is now hidden behind CloudFlare
Replies: 25
Views: 786

Re: Website is now hidden behind CloudFlare

But either way, I guess we shared some sensitive info that some hackers desire by accident? In fact I still cant imagine, what China may hope to achieve by ddos attack, except temporary disabling a service... Reason? Never strictely obvious. It's worth remembering that the source of an internet att...
by Sirius_Alpha
07.11.2019, 23:24
Forum: Add-on releases
Topic: Extrasolar Planets (updated catalogue)
Replies: 47
Views: 54323

Re: Extrasolar Planets (updated catalogue)

So the Wikipedia article is incorrect then? Someone should fix it... And that is why I don't use Wikipedia as a source for this. Yeah the IAU giving names to ... let's face it, radial velocity curves... seemed premature. The IAU-named Pollux b is somewhat controversial as well (the literature has g...
by Sirius_Alpha
07.11.2019, 20:36
Forum: Add-on releases
Topic: Extrasolar Planets (updated catalogue)
Replies: 47
Views: 54323

Re: Extrasolar Planets (updated catalogue)

Why isn't Fomalhaut b included? It should at least be in Exoplanets_Unconfirmed.ssc. Great question! Basically, a third observation of the object showed that its orbit crossed the debris ring around Fomalhaut A. This gives you a dynamical constraint on the mass of the planet to being less than ~3 E...
by Sirius_Alpha
01.11.2019, 21:54
Forum: Add-on releases
Topic: Extrasolar Planets (updated catalogue)
Replies: 47
Views: 54323

Re: Extrasolar Planets (updated catalogue)

TESS Sector 15 planets are out! I have implemented a better texturing system for sub-Jovian planets. Before, planets with radii 30,000 km > R_p > 10,000 km were given the venuslike.jpg texture, which has always been used to represent Neptune-like planets. Now the programme I use to write the .ssc fi...
by Sirius_Alpha
01.10.2019, 15:11
Forum: Add-on releases
Topic: Extrasolar Planets (updated catalogue)
Replies: 47
Views: 54323

Re: Extrasolar Planets (updated catalogue)

Do you have a reference for the size of WD 1145+017 "b"? All the literature I've seen suggest there are numerous objects with unknown size, whose existence is known only from the transits of their evaporating debris clouds.
by Sirius_Alpha
01.10.2019, 02:40
Forum: Add-on releases
Topic: Extrasolar Planets (updated catalogue)
Replies: 47
Views: 54323

Re: Extrasolar Planets (updated catalogue)

TESS Sector 14 planets are out! And it contains the Kepler field, too. TOI-1172 appears to be broken on ExoFOP's end. TOI-1232 has two different candidates listed as TOI-1232.01, and I'm not sure if this is just a glitch or what. I will wait for them to fix these two on their end, though if they hav...
by Sirius_Alpha
25.09.2019, 03:21
Forum: Development
Topic: Celestia 1.7.0 Development Thread
Replies: 712
Views: 165129

Re: Celestia 1.7.0 Development Thread

Yeah I experimented around with this a little, putting a tiny invisible planet in a polar orbit in such a long period that it's "stuck" over the north/south pole of the star, so that the planet doesn't cast a shadow on the ring. They kinda look nice but if you're viewing them the "wro...
by Sirius_Alpha
23.09.2019, 15:51
Forum: Development
Topic: Celestia 1.7.0 Development Thread
Replies: 712
Views: 165129

Re: Celestia 1.7.0 Development Thread

Kinda off-topic but is it possible we could have rings around stars, too? They would need to have some sort of Emissive True property as well as a much greater visibility distance. This might enable the implementation of circumstellar disks.
by Sirius_Alpha
14.09.2019, 14:43
Forum: Add-on releases
Topic: Spacecrafts for Celestia
Replies: 1337
Views: 223601

Re: Spacecrafts for Celestia

I'm not sure I understand exactly what you mean. Are you saying that because the inclination change was performed at apoastron, you think the data is suspecft? If so, it turns out inclination changes occur best at lower orbital velocities. Inclination changes at apoastron are much more fuel-efficien...
by Sirius_Alpha
12.09.2019, 19:45
Forum: Bugs
Topic: Circumbinary Planet Issues
Replies: 8
Views: 2941

Re: Circumbinary Planet Issues

Even if you want to remove the temperature tag, there's still the problem of the system not appearing in the Star Browser.
by Sirius_Alpha
07.09.2019, 04:14
Forum: Add-on development
Topic: Phantom Planet (and other Danny Phantom stuff) for Celestia
Replies: 26
Views: 6893

Re: Phantom Planet (and other Danny Phantom stuff) for Celestia

I don't think anybody is interested in making your add-on for you.
by Sirius_Alpha
31.08.2019, 23:15
Forum: Add-on releases
Topic: Extrasolar Planets (updated catalogue)
Replies: 47
Views: 54323

Re: Extrasolar Planets (updated catalogue)

TESS Sector 13 planets are out! BD+04 701 is a (visual?) binary system with a TESS planet candidate around each star. I don't have data right now on the system to render it as a binary, rather than as two separate single stars. Though with as interesting as this is it'll probably be the target of la...
by Sirius_Alpha
31.08.2019, 20:28
Forum: Add-on releases
Topic: Project "Celestia Origin", release dated August 30, 2019
Replies: 135
Views: 58203

Re: Project "Celestia Origin", release dated August 30, 2019

I've been seeding the torrent for over a while now and have reached a ratio of 2.207. I'll keep it going for a few more days. That should push up the download rate.
by Sirius_Alpha
30.08.2019, 21:46
Forum: Add-on releases
Topic: Project "Celestia Origin", release dated April 30, 2019
Replies: 97
Views: 36916

Re: Project "Celestia Origin", release dated April 30, 2019

It's quite alright! The extra time will permit me to improve the exoplanets addon and increase its quality.

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