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Add-on Submissions 22W25 #22
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The following first posts are resubmitted from the previous issue which are yet to be published in order to not get them buried |
SpacecraftTitle: Lunar Gateway Title: Solar Maximum Mission NOTES:
Proposed category: Spacecraft: 1951 - 2000
Title: BLITS NOTE: To view the BLITS satellite, you must set the time on Celestia between 2009-Sept-17 and 2013-Apr-1 Proposed Category: Spacecraft, 2001-2020 Updated Landsat 7 addon. Added COSPAR identification and fix in SSC. Updated Landsat 8 and 9 addon. Added COSPAR identification and fix in SSC. Updated TDRS addon. Added COSPAR identification. Updated Aquarius addon. Added COSPAR identification. |
Hypothetical and DisprovenTitle: Alpha Centauri B ExoplanetsUpdated NGTS-12 addon. Textures, image and addon description have been updated. Description: NGTS-12b is a gas giant exoplanet discovered in 2020, orbiting the star NGTS-12 about 1456 light-years away from Earth. It is believed that the planet is nearing the end of its existence, as it will be swallowed by its parent star, which is entering a subgiant phase. Title: 40 Eridani |
Asteroids & NEOsTitle: 2013 UT15 Title: 2013 RA109 Title: 130 Elektra |
CometsReboot of the addon of the same name due to inconsistencies with the Rosetta addon. Requesting to delete such namesake addon from the list (77DE493C-ECBE-3D9E-D332-827E71A95ADE) Title: 67P/Churyumov-Gerasimenko Download the Rosetta addon to view the spacecraft and its companion, Philae, explore this comet from 2014-2016 Updated C/2014 UN271 (Bernardinelli-Bernstein) addon. Comet size and trajectory have been updated. |
ID cannot be changed for existing add-ons. You have to delete (soft deletion where the old one is removed from categories but link works (not updated) or hard deletion where old link no longer works) the old add-on and create new ones with the required ID. |
I see. Will be careful on making ID Requirements for future addon submissions from now on |
2001: A Space OdysseyTitle: German Orbital Weapon Title: French Orbital Weapon Title: Chinese Orbital Weapon Title: Monolith TMA-2 Title: Space Station V Title: The Earth in 2001 NOTE: This add-on shows the relative fantasy space rendering, and not the real Earth image. Proposed category: Fictional: 2001: A Space Odyssey |
Babylon 5Title: B5-1: Epsilon Eridani |
Fictional: OthersTitle: Russell's teapot Title: Moon Terraformed Title: Extrasolar planet vs Solar System Orbit comparison |
Ok...that's all the unpublished addon submissions from the previous issue #21 as of this writing |
@DaveBowman2001 what about the Ceti Alpha Addon? Also for the Star Wars addon if need be I can put together a quick STC file for a new star for the planets to orbit to avoid conflicts with RHO CrB's actual planets. |
Oh, crap I forgot about this one! Thanks! Star TrekTitle: Ceti Alpha In an alternate timeline, Ceti Alpha V was the refuge for the last 6,000 members of the Human species in the 2150s and 2160s, survivors of the devastating Xindi attacks on Earth and its colonies, as it was far from the Delphic Expanse. (ENT: "Twilight") |
Seems fair enough. Until we have a proper Star Wars Galaxy to begin with I guess this works as well. Much easier to find than what another thought I had in mind, which is scatter them across random stars in the Milky Way |
Would it be possible to convert any of the SpaceEngine Star Wars Galaxy addon for use in Celestia? |
@levinli303 When do you intend to upload these latest addons? I have a few more addons here to send. |
Title: Molniya 1 NOTE: This addon only adds the first four Molniya 1 satellites that reached orbit. To see them, you must adjust the time on Celestia: Molniya-1-01: 1965-Apr-23 ~ 1979-May-27 Molniya-1-02: 1965-Oct-14 ~ 1967-Mar-17 Molniya-1-03: 1966-Apr-25 ~ 1973-Jun-11 Molniya-1-04: 1966-Oct-20 ~ 1968-Sept-11 Proposed Category: Spacecraft, 1951 - 2000 |
Done, I'll repost the Star Wars addon to change it to fix the descriptions. Updated addon below, older addon here ( #22 (comment) ) please ignore. Title: Tatooine, Endor and Death Star Updated on 6/20/2022 to change the star of the Addon to a fictional star named Jestr's Star (named after the original addon creator.) Original release date of unedited addon is 2004. |
Interesting, the SE code of the stars look almost similar to Celestia's STC code. This might be possible to convert with relative ease EDIT: Oh wait, the stars are way outside Celestia's 10 million LY limit. SE's Star Wars Galaxy is about 383 million light-years away from the Milky Way |
Title: Stargen: Solar Neighborhood, 16 Stars Title: Stargen: Solar Neighborhood, 34 Stars Title: Stargen: Solar Neighborhood, 77 Stars |
These Stargen addons add planets around several stars in multiple star systems, but they're often incorrectly defined as orbiting the system barycenter. For example, the planets around 70 Ophiuchi A are defined as orbiting "70 Oph" rather than "70 Oph A". There are also some stars that are not in Celestia, referred to by a name that's not in Celestia, or referred to by the wrong name (e.g. "Mu Ari" for "Mu Ara"). I guess the last is probably fine, but the selected star is clearly not the intended one. |
Yeah I should fix those and reupload. |
Done, filepaths are the same. I added STC's for missing stars, and re-parent'ed some systems to their proper stars. |
@DaveBowman2001 in the new format, we don't have additional metadata anymore. an example of correct submission A few places to notice:
Title: Solar Maximum Mission NOTES: Description: The Solar Maximum Mission (SolarMax) is a solar observatory launched in February 1980 that prematurely malfunctioned in November of the same year. Four years later, it became the first-ever satellite repaired in space during the STS-41-C (Challenger) mission in April 1984. Afterwards it continued to observe the Sun until an intense geomagnetic storm on March 1989 accelerated its orbital decay until it reentered the Earth's atmosphere on December 1989 NOTES:
STS-41-C Launch - YouTube
Proposed category: Spacecraft: 1951 - 2000 |
I see. This clarifies things significantly! Thanks! |
Since the newer version is now successfully uploaded on mobi, I think it's time to remove the older duplicate of ID: 77DE493C-ECBE-3D9E-D332-827E71A95ADE |
@Peter592 please be careful about who you ping. Those users haven't posted anything here. If you mean any planetary system with two stars, there are several, including this. If you mean specifically a version of our Solar System with two Suns, there's one here on the old Celestia Motherlode site which hasn't been submitted to celestia.mobi yet. |
What do you mean by that? And if it's not necessary, don't keep tagging other users. |
Title: 8P/Tuttle |
Title: 10P/Tempel |
The problem with toutatis's full XYZV trajectories for Martian orbiters is that they take too long to load on Celestia. For example, MRO takes about a minute to load fully, and most of the time it crashes my phone (yes I tried it once before submitting that addon here). This is because the time steps used to accurately depict orbits around Mars and any other small celestial object has to be 10 minutes per entry, and that makes the file so big (each XYZV year is 8 MB). As much as we'd like to have accurate orbits for these orbiters, sadly it isn't practical in the case of mobile devices. We are fortunate enough that Cassini, Rosetta, and Galileo weren't too large for their full trajectories to be rendered. Besides, all Martian orbiters haven't changed their orbits significantly after their first year, so why bother having XYZV trajectories with them. John van Vliet pointed out that for very long recorded trajectories, SPICE trajectories are much more practical than XYZV. However I don't know how to read such files yet, so I stick with XYZV |
It is possible. On Discord, I posted a screenshot of my semifictional attempt of Tianwen-1 orbiting Mars, which was based on the last state vector data from HORIZONS, but I'm not satisfied with the result. Don't worry, it is being worked on as we speak |
Precisely for this reason, it would be an alternative version. The current version of the orbiters would remain, and a larger version would contain full trajectories. Of course the description would include a warning that it may take longer to load. And therefore, some addons actually take much longer to load, for example 1 million stars in the Andromeda Galaxy which when testing on my smartphone, it took more than 3 minutes for Celestia to load. Also, the only orbiters that would have full xyzv trajectories would only be Mars Express, MAVEN and Venus Express. Others like the Mars Reconnaissance Orbiter is not as necessary as it remains in low orbit around Mars. |
Yet still MEX, VEX, and MAVEN haven't changed their trajectories as significantly as the orbiters on the gas giants. It's just like creating an entire 24-year long XYZV trajectory for the ISS without ever seeing the station changing its orbit. Unless their models are greatly different between versions, posting an alternate version wouldn't make much of an appeal really for Celestia users. The only Martian orbiter that you could potentially see its orbital plane changed is Tianwen-1, which originally orbited at 10° but later maneuvered to 86°. All the other orbiters did not do this |
Title: 5 Astraea |
Title: 6 Hebe |
Title: 7 Iris |
Title: 8 Flora |
Title: 9 Metis NOTE: Not to be confused with Jupiter's moon Metis. Proposed Category: Asteroids & NEOs |
Title: 10 Hygiea |
Title: 22 Kalliope |
I've got a question. What do you have to do to make Jestr star work? With many thanks in advance. |
Title: Earth (Global Water Volume)
Proposed Category: Planets and Moons |
Title: 25143 Itokawa NOTE: This addon updates and modifies the existing version of asteroid Itokawa in Celestia. Proposed Category: Asteroids & NEOs |
Looks like Jestr's Star is missing a distance. As a 3D space simulator, Celestia can't render objects if it doesn't know the distance to them. (Also, why do you translate posts to German when you reply to them? Especially since the reply is in English?) |
Title: 367943 Duende |
Title: C/1980 E1 (Bowell) NOTE: To find the comet you must search for C-1980 E1 Bowell Proposed Category: Comets |
I fixed this issues, it was not the lack of distance that broke it, it was the lack of telling the program that it was a star. I also updated the download link in the original second post for the addon here. |
Thank you so much. |
I've implemented better support for cache control on the server, so hopefully this reduces the workload on the server side. you should not notice anything except that loading a previously loaded page (within 30min or so) will be faster. if you found anything unusual after this change please let me know. |
@SpaceExplorer2008 The orbital plane will have a gradual change naturally. However this is also seen on an SSC-defined orbit when you fast-forward time while locked on the satellite's parent object. On highly inclined Mars-orbiters, even if you convert a single XYZV vector into Keplerian elements, the overall orbital shape (for example MAVEN) remains the same after they reached their final operational orbit about a year after Mars arrival. There are sadly no intentionally planned flybys of these moons, only coincidences. But since I do believe the mobi site will eventually be the main resource for Celestia addons in the foreseeable future. I'd suggest the other XYZV files be disabled by default. How to do this? Put them all in an extra ZIP file along with the SSC that will enable it. For instructions on how to use it for mobile, provide a tutorial that you can post in the Tutorials Submissions issue See my example ZIP file template I made for MRO below. The default files only have XYZVs for Mars-Years 1 to 3, but the compressed folder inside (named "Alternate XYZV.zip") has all the other XYZVs (1 to 30) waiting to be activated along with a replacement SSC file: Template: Mars Reconnaissance Orbiter.zipIn this way, we have no duplicate "alternate versions" on the Spacecraft category and thus make the whole download page more organized. |
A good idea, thanks. But would a Celestia user be able to activate the full xyzv path without having to access the CelestiaResources internal folder and unzip the file? If so, I will update next week. First I have to continue to expand the categories of asteroids and comets. I also believe that the site mobi. will soon be the biggest and perhaps the best place to download addons for Celestia as it gathers addons from Motherlode, Forum and Celestia Origin all in one place. |
Yes they could access it. In fact, the CelestiaResources internal folder is the only Celestia-Mobile related folder that is readily visible on the Phone's Storage by default (on Android, it is just located on the Android/Data folder, I'm not sure on iPhones though). This is why I suggest to post a tutorial on the Tutorials Submission issue on how this is done manually |
Ok, let's continue our discussions and submissions on #23 now |
How long will it last with Jestr's Star. Best regards from Germany |
Please stop posting this. I’ve already uploaded the lastet version to celestia.mobi. You should first uninstall and install again to see the latest version. If the issue persists, then the addon is still incorrect in ways |
Submit your add-ons in this issue, thanks for your contribution!
Submission template:
For Updates to Existing Add-ons
For updates to existing add-ons, please attach the id to the add-on and only include updated fields from the template.
For removal of add-ons, please attach the id too.
The id is part of the link to the add-on:
For example, this addon below has an id of A4577B17-4C60-0C1E-CAB5-92A604FF0EC3
https://celestia.mobi/resources/item?item=A4577B17-4C60-0C1E-CAB5-92A604FF0EC3
Check Before Uploading an Add-on
Your add-on will be running on Android/iOS/macOS/Windows, to enable maximum compatibility, please ensure that:
Mesh "Progress.cmod"
, then the file name should be exactlyProgress.cmod
notprogress.cmod
).Example:
Title: Kepler-1649
Description: The Kepler-1649 planetary system, which is a red dwarf star orbited by a Venus-analogue and an Earth-analogue. Alternate surfaces for planet c are included.
Proposed category: Exoplanets
Demo Object Name: Kepler-1649/c
Author(s): SevenSpheres
Release date: 2020-07-16
Link to download: Kepler-1649.zip
Image:
For New Categories
If a New Addon does not fit into any existing category, you can propose a new one by following the format below:
Example:
For Parent Category
Full Name: Exoplanets
Description: Artistic Impressions of real exoplanets arranged by confirmation status and discovery years
Children: Early Years, Kepler Era, TESS Era, Unconfirmed
Image:
Example:
For Children Category
Short Name: Unconfirmed
Full Name: Exoplanets: Unconfirmed
Description: These addons depict the star systems whose planets were spotted but is yet to be confirmed by follow-up observations
Parent: Exoplanets
Image:
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