Discussions on Exoplanetology
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Rather than having a single property for "exoplanets discovered" on the Astronomical Discovery type, I think this should have a single property for "astronomical objects discovered". I propose that we reciprocate the incoming property from Astronomical Discovery ("discovery site") and merge it with the exoplanets property (and therefore make all exoplanets also instances of Astronomical Discovery).
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Cross-posting to Exoplanetology, since this change would potentially affect saved views.
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Sounds good to me.
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Bump. I'm opening a task to migrate the exoplanet discovery data to the astronomical discovery type. Metapsyche, this will mean that the property /schema/base/exoplanetology/exoplanet/discovery_site is no longer reciprocated. (The same assertion of discovery will still be there, but it will be handled via a property on the Astronomical Discovery type.)
If you'd like, we could refactor all the various discovery properties on Exoplanet to the corresponding Astronomical Discovery properties while we're at it.
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Ok. Cool. Sounds good. And yes please refactor all the various discovery properties on Exoplanet to the corresponding Astronomical Discovery properties, if possible. Thanks!
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Will do: DA-1085.
Can you add Astronomical Discovery as an included type of Exoplanet? We'll add the Discovery type to all current instances as part of the migration, but it should be an included type so all future instances will have it as well.
Also, if you have any views based on these six properties, you'll have to re-create them after the migration.
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Done, astronomical discovery is now an included type.
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Now that exoplanets are also instances of Astronomical Discovery, what will we do with the duplicate properties (such as Discoverer, Discovery Date, Status, etc, etc) ? Can we "merge" those properties and retain data that has been put in them so far? I don't mind recreating the views after this change. Thank you.
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There's an open JIRA task to do exactly that data merge: DA-1085. Just needs someone to act on it :-)
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Ok. Now that Google owns Freebase, can we ask Sergey Brin to please work on that DA-1085 ticket now?
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:)
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We're still playing catch-up with some of our migration tasks, but I'll bump it up the queue. Sorry for the long wait on this one!
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Hey, no rush. I was just kidding. My html-tagged giggle didn't show up, which explains the smiley follow-up. Thank you for the reply.
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Hiya Freebasers! (Tune of the Pixies' song "Debaser" playing in the background) Since i'm using Freebase in the main engine of the auto-suggest in the interface, i thought i'd let the Freebase community know about The Exoplanet Seeker. "Slicing up eyeballs, I want ya to know!" :) -Exoplaneteer
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Hi Guys! I just added several properties into the Exoplanet schema, which are Star Mass, Stellar Spectral Type, and Star Brightness. I did it because i find it beneficial that the relevant properties of an exoplanet's host star is directly accessible from the exoplanet's schema, rather than digging from a separate table of the host star to get data. To see what i mean, let's look at The Planetary Society's exoplanet database schema, for example http://www.planetary.org/exoplanets/list.php?exo=Kepler-4+b Looking at that dataset, it looks so much easier to know if exogazing an exoplanet in the sky is feasible via the host star's brightness if that magnitude value is easily obtained straight from the exoplanet's dataset. From a more scientific viewpoint, writing an app to correlate a property of exoplanets with it's host star's mass would be so much easier. Same thing if, for example, we want to discover hidden relationships between exoplanets and the spectral type of their host star. Please review these changes and let me know if it makes sense. Thank You! -- @metapsyche
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Honestly, this is the wrong thing to do.
What you've done here is caused a "denormalization", where the same information (eg the mass of the star) to be entered in multiple places: once on the star topic itself and separately on each exoplanet topic for that star. This is something the Freebase schemas try hard to avoid as it dramatically increases the chance of inconsistent data in Freebase, as well as creating more work for users as they have to update one fact in multiple places.
If what you're trying to do is to get is a simple view which gives you both the exoplanet and the mass of its parent star, that's already possible using a view within the Freebase client without needing these extra properties.
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I see. And you are right. Adding those star properties inside the exoplanet schema dramatically increases the chance of inconsistent data in Freebase, as well as creating more work for users as they have to update one fact in multiple places. I now took off those properties. Thank you for letting me know.
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These properties would make a lot more sense to me to see on the Star type (mass is already there, but spectral type and brightness seem like pretty logical properties for the Star type). Having properties for the exact same value on multiple types, especially multiple related types, is something we try to avoid as much as possible. The properties are (or would be) only one step away on the Star type, and as far as writing apps goes, it's not really any harder to query the properties from the Star type than the Exoplanet type. The stellar properties could be exposed in a saved view, as well.
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Some of those other properties (spectral type and brightness) are in the star and celestial object type already, which all stars have as an included type when the topic is typed as a star. Luminosity is brightness.
I believe we need to add surface gravity, age, variability and some other properties to either star or celestial object types.
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So I emailed the data-modeling list to see if the community has any suggestions/complaints and if all goes well, we'll push these types up into Astronomy in the next week or so.
Telescope and Observatory will need some more properties for sure.
Going home to sleep.
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Thank you very much, gmackenz. I am looking forward to seeing the exoplanetology types inside Astronomy.
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