Exoplanetology

WASP-11 b: Space is needed between star name and planet. Should be WASP-11 b!

2008-06-02T19:00:09.0000Z

Merge, don't delete. Preserve the WIkipedia key.

WASP-10 b: Space is needed between star name and planet. Should be WASP-10 b!

2008-06-02T18:59:18.0000Z

Merge, don't delete. Preserve the Wikipedia key.

WASP-7 b: Merge, don't delete

2008-06-02T18:58:18.0005Z

Preserve the Wikipedia key!

WASP-12 b: Wrong naming convention; Pls delete or merge with the correct WASP-12 b;

2008-06-02T16:31:22.0007Z

Don't delete, merge

WASP-14 b: Wrong naming convention; Pls delete or merge with WASP-14 b;

2008-06-02T16:29:34.0007Z

Merge, do not delete, to preserve linkage to wikipedia topic.

HAT-P-2 b: Wrong name: should be HAT-P-2 b

2008-06-02T16:26:12.0000Z

No, do not delete, merge other topic to this...

HAT-P-3 b: Wrong name: Should be HAT-P-3 b!

2008-06-02T16:24:34.0007Z

Merge, not delete...We need to preserve the Wikipedia keys, etc.

HAT-P-3 b: Wrong name: Should be HAT-P-3 b!

2008-06-02T13:16:12.0005Z

Space Matters!

HAT-P-2 b: Wrong name: should be HAT-P-2 b

2008-06-02T13:10:57.0005Z

Please see HAT-P-2 b instead

WASP-14 b: Wrong naming convention; Pls delete or merge with WASP-14 b;

2008-06-01T13:23:57.0012Z

Space is needed between star name and planet. Should be WASP-14 b!

WASP-12 b: Wrong naming convention; Pls delete or merge with the correct WASP-12 b;

2008-06-01T13:20:29.0005Z

Space is needed between star name and planet. Should be WASP-12 b!

WASP-11 b: Space is needed between star name and planet. Should be WASP-11 b!

2008-06-01T13:12:06.0014Z

Wrong naming convention; Pls delete or merge with the correct WASP-11 b;

WASP-10 b: Space is needed between star name and planet. Should be WASP-10 b!

2008-06-01T13:09:12.0012Z

Wrong naming convention; Pls delete this. This is a 'duplicate' of the correct WASP-10 b!

WASP-9 b: Wrong naming convention; Pls merge with WASP-9 b;

2008-06-01T13:04:36.0009Z

Space is needed between star name and planet. Should be WASP-9 b!

WASP-8 b: Wrong Naming Convention;

2008-06-01T12:59:47.0005Z

A space is needed between the star and the letter that denotes the planet. This should be WASP-8 b.

Exoplanet: Option to switch between Jupiter Mass and Earth Mass

2008-04-12T03:31:34.0007Z

Right now, a property that uses units must be locked to a single unit. This is by design; it makes comparison operators tractable. If more than one unit can be used, it makes queries like “Show me all exoplanets with mass less than 1.0 M(jup)” impossible to answer easily.

While it’s true that it’s theoretically possible to do unit conversion if the relationship between M(ear) and M(jup) is known, it suddenly requires the underlying query language to have an intimate knowledge of units and equivalencies, and that’s a huge complication is what so far is a simple and elegant layered model. So unless and until we attack that problem, users entering Earth-sized planets will have to grab the calculator and figure out how many Jupiter-masses they are.

Exoplanet: Option to switch between Jupiter Mass and Earth Mass

2008-04-11T10:49:01.0005Z

Hello Freebase Gurus,
Is there a provision in Freebase to enable the users to use Earth-mass instead of Jupiter-mass when entering data for exoplanet type?
At the moment, the "Mass" property of the exoplanet type schema is "locked" in to "Jupiter Mass" as its unit of measure. This makes sense because almost all exoplanets currently use M(jup) as it's unit of measure, owing to the fact that the capability of current detection methods is still in its infancy stage and can only resolve Jupiter-sized planets. Hence, it seemed much simpler at the moment to use Jupiter's mass as the reference.
What I would like to do is to provide an option for someone entering data for a new exoplanet to be able to use Earth-mass, (instead of Mjup) as the unit of measure for the exoplanet's mass.
The reason I ask is because a few years down the road when planet-detection techniques mature - there will be a deluge of Earth-sized planet discovery. And because we like to simplify things, people will definitely use the "Earth-mass" for the unit of measure for these new earth-sized exoplanets.
So, as someone having access to modify the exoplanet type, can I design the schema in such a way that either Jupiter Mass or Earth-Mass can be used?
In addition, when a user is entering data specifically for the exoplanet's Mass - would it be possible for Freebase to automatically re-calculate the value when switching the units of measure between Mjup and Earth Mass?
I do not know if the Freebase engine can programmatically do what I have outlined above, but it sure would be cool to be able to do that.

Exoplanetology: Well, I tweaked and cleaned...

2008-04-09T13:30:18.0000Z

Thank you very much, gmackenz. I am looking forward to seeing the exoplanetology types inside Astronomy.

Exoplanetology: Well, I tweaked and cleaned...

2008-04-09T01:21:36.0012Z

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.

Exoplanet: After the sandbox refresh of data, a new version of Extrasolar Planet

2008-04-08T13:45:51.0007Z

Hi gmackenz,
Thank you for your example. I have made some updates to the exoplanet type based on your model of Extrasolar Planet. (There were some minor changes in wording but more-or-less its the same.) I added 'Distance from Earth' because it seems rather useful as a property of exoplanet (even though its equal to the parent star's distance from earth).
I also added you in as Administrator within the Exoplanetology domain. Please do improve upon it whatever is fit.
This progress in data modelling of the exoplanet type is very timely especially now we have 12 new exoplanets discovered just this month alone.
More are coming so its best to be ready.

regards,
metapsyche

Exoplanet: After the sandbox refresh of data, a new version of Extrasolar Planet

2008-04-08T08:18:25.0012Z

So here's the latest Extrasolar Planet type I've modeled on the testing area of freebase.

On this or that discussion link let me know what you think.

You should either model like my example, with your own take on how it should work with more correct/understandable wording or I can do it for you in your Exoplanet (to do that I'd need to be temporarily added as a domain administrator...Just add my user name here).

Don't forget that some of the data from the SuperWASP site applies to the star and should not be part of the Exoplanet topic.

Exoplanet: Reviewing your exoplanet type

2008-04-07T08:57:09.0000Z

So here's my take on an Exoplanetary schema with the example being WASP-3b on sandbox.

I've decided you were right initially to not include the planetary schema, that should be left uncomplicated (ie. just for our local system planets) for now.

I think I've covered all the bases. Unfortunately Sandbox tends to get wiped out Monday Evening, PST (USA). You can use my examples for your own inspiration. I'll still hold off on promoting your type until we get some feedback from the data-modeling community over the next week or so.

Exoplanet: Reviewing your exoplanet type

2008-04-05T08:23:17.0000Z

Please consider modeling what WASP-specific properties on sandbox.freebase.com for your exoplanet type.

I am pondering myself and will hopefully create what I think is needed on sandbox as well. I'll get back to you with a better fleshed out exoplanetary scheme.

Leave out the 'discovered' and 'mass' types. Discovered will be contained in Planet and Mass & Radius needs a M(jup) & R(jup) units of measurement type created. I almost have it created.

~ Gordon

Exoplanet: Reviewing your exoplanet type

2008-04-04T13:54:41.0000Z

Hi gmackenz and skud,

Thank you very much for your inputs regarding my request on exoplanets.

I made some modifications today, as a trial, here's WASP-6b on freebase:
http://www.freebase.com/view/guid/9202a8c04000641f8000000007cf5f47
The changes were:
1) I now changed Mass into Type "Mass", but I do not know if its ok for you to add a new SI measurement for "Jupiter Mass" (MJup) since they use it for exoplanets.
I do suggest adding it for quicker data entry rather than converting units between kilogram - earth mass - jupiter mass.
For now I chose Kg for the SI unit of exoplanet's mass
2) I included 'Planet' as a type

I do not fully know yet in detail the other differences of an 'exoplanet' type is compared to type 'planet'.
But as of now, the differences I notice is in the units of measurement such as for Mass and Radius:
planets use "Earth" Mass, whereas exoplanet use "Jupiter" Mass.
Also, distance from Earth, they use lightyears.

Again, using WASP-6b (and it's parent star) as an example below is some data from the SuperWASP website (http://www.superwasp.org/wasp_planets.htm).

Apparent Visual Magnitude   12.4
Distance from Earth   1000 Light Years
WASP-6 Spectral Type   G8
WASP-6 Photospheric Temperature   5500 K
WASP-6b Radius   1.30 Jupiter Radii
WASP-6b Mass   0.50 Jupiter Masses
Orbital Distance   0.0439 AU
Orbital Period   3.36 Earth Days
Atmospheric Temperature   1700 K

So i do not know at this point whether to leave exoplanets bare and just add the other exoplanet properties into planet.
Or whether to continue adding the distinct characteristics of exoplanets onto the exoplanet type.

Again thank you for your suggestions on this matter!

Regards,
- Metapsyche

Exoplanet: Reviewing your exoplanet type

2008-04-04T07:26:40.0000Z

The Mass & Year discovered, properties as is, should be removed.

I applaud all of the assignments of topics as exoplanets, but maybe you should leave Exoplanet bare and just add Planet as an included type.

It has the Mass (measurement integer), Discovered by (links to Astronomer), and Star System (links to star system which contains currently star/planet/dwarf planet for now).

As they are all planetary bodies that differ from our local system ones mainly by orbiting other stars. This way we can easily query for exoplanets if we wish to disclude all local system planetary bodies nd maintain a simpler list of distinct astronomical types.

Exoplanet: Reviewing your exoplanet type

2008-04-03T17:48:15.0012Z

Hi, just taking a look at this type with an eye to moving it into the astronomy domain. Couple of comments for you:

1) As gmackenz points out above, you might want to include "Celestial body".

2) You have Mass as a "topic" but it might be better as an integer, expressed in some suitable SI measurement Otherwise we'll end up with Freebase topics for eg. "1,000,000 tons".

3) You have "year discovered" as a date/time. Why not call it "Date discovered" so people can include a finer degree of detail if they have it.

4) Do you want to include "Discovered by" as a property, linking to Astronomer?

Exoplanet: I see you've detyped a few topics as planets and created your own exoplanet

2008-03-29T07:24:10.0012Z

You might want to add as an included type the celestial object type, which contains many useful astronomical properties which you need not have to re-invent within your exoplanet type.

~ Gordon