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Wikipedia talk:WikiProject Astronomical objects/Archive1
The purpose of this wiki-project is to create, improve and standardize articles for astronomical objects, which includes notable objects that exist outside of the Earth. The templates to list basic information, along with guideline reccomendations, are given below.
Messier 73, Jewel Box, (Kappa Crucis Cluster), Astronomy Collaboration of the WeekOverall footer
Useful TemplatesWhen filling in scientific data, you may find the following templates useful:
Articles listed for deletionPlanets and moons
This page is where work is being done to come up with a generic table template to be used for organizing a list of facts about various astronomical bodies such as planets, natural satellites, and maybe also smaller bodies such as asteroids and comets (though I suspect that both asteroids and comets will be better served by having their own template design). Most of these entries should be measured in SI units. Some of them, however, should have more "human-accessible" units, in addition to SI units. I've indicated some cases with a second unit name in brackets. In the case of times (orbital periods, rotation), I think it best to give all periods in days for comparison purposes, and provide a translation (in parentheses) into years, days, hours, etc.; whatever is most appropriate for the duration being described. Oh, and compared to table templates for things like the elements, I think that this template should be considered somewhat more flexible. Moons with no atmosphere whatsoever could skip the atmospheric composition section entirely, for example (though atmospheric density would still be listed). Moons also wouldn't have their orbital radii listed in AU, since AUs are such large units. For planets, use "perihelion" and "aphelion" instead of "periapsis" and "apoapsis." In the case of "number of moons" and "is a moon of", only one of these rows will be used by any given object. There aren't any moons with moons (yet), though perhaps "co-orbital with" might be a useful row to add in a few cases. A set of colours for use in the 2-column headers of this table:
On orbital characteristics: The orbital circumference should be computed from the semi-major axis using Ramanujan's approximation for ellipses. The ratio of that circumference to the period then gives the average orbital speed. The minimum and maximum speeds follow from Kepler's laws: and . Note that, by convention, all orbital parameters are given in the primocentric reference system (heliocentric for the planets). On physical characteristics: The surface area and volume of non-spherical objects (e.g. moonlets, asteroids) must use the proper ellipsoid formulae, because even slight departures from sphericity will make a large difference, particularly for the area. On the subject of obliquity: Obliquity is the angle between the object's axis of rotation and the normal to the plane of its orbit. Do not confuse this with the Tilt listed in the JPL pages, which is a measure of the angle between the local Laplace plane and the primary's equatorial plane. In fact, most inner moons have synchronous rotations, so their obliquities will be, by definition, zero. Outer moons simply have not been seen from close up enough to determine their true obliquities (although Phoebe, recently seen by the Cassini probe, is an exception; see Talk:Phoebe (moon) for the derivation of its obliquity). Conversion logStill to be done: Done:
Planet TemplateTemplate: {{Planet}} The above fields need incorporating into this template. Footers
Useful sources
Minor planets (asteroids, comets, Kuiperoids, etc)
The example on the far right is the recommended table format for minor planets —note the recommended unit links. It is generated by the {{Minor Planet}} template. The template has an optional astron argument whose default value is helion; this allows its use to describe asteroid moons, as in the S/2000 (1998 WW31) 1 example. Urhixidur wrote a nifty Windows tool that can greatly facilitate preparation of these. The most recent version can be downloaded from http://www.bigfoot.com/~D.U.Thibault (at the bottom of the page, under the heading "Delphi 7 and Wikipedia"). A more compact form of this with just the orbital elements is on the near right {{Minor planet}} (note the lower case 'p'). The two are incompatible at the moment, something which Nicholas intends to fix one day. A few short-hand templates are useful when dealing with asteroids with provisional designations. They are Template:mp, Template:mpl, and Template:mpl-. Mpl ("minor planet link") is used to write a link, like so {{mpl|(15874) 1996 TL|66}} = (15874) 1996 TL66, whilst mp ("minor planet") saves you from typing <sub></sub> if you'd rather not: {{mp|(15874) 1996 TL|66}} = (15874) 1996 TL66. Mpl- is used with numbered asteroids that have kept (so far) their provisional designations: {{mpl-|15760|1992 QB|1}} = 1992 QB1 instead of (15760) 1992 QB1. Footers
Particularly useful are {{MinorPlanets Navigator}} and {{MinorPlanets Footer}}. Scroll down beyond the table to the right to see examples of these. Comets
As discussed above, comets might be served better by a different template. Here is a suggestion for {{Comet}} we can toy with until we are happy with it. Awolf002 00:23, 5 December 2005 (UTC)
StarsStarbox tree{{subst:Starbox begin | name = Alpha Centauri }} |- | colspan="2" style="text-align:center;" |  The position of Alpha Centauri. |-
! style="background-color: #FFFFC0;" colspan="2" | Observation data |- ! style="background-color: #FFFFC0;" colspan="2" | Spectral Characteristics |- style="vertical-align: top;" | Spectral type | G2 V |- style="vertical-align: top;" | U-B color index | 0.24 |- style="vertical-align: top;" | B-V color index | 0.65 |- style="vertical-align: top;" | Variable type | N/A |-
! style="background-color: #FFFFC0;" colspan="2" | Astrometry Radial velocity (Rv)21.6 km/sProper motion (μ) RA: -3678.19 mas/yr |- ! style="background-color: #FFFFC0;" colspan="2" | Physical Characteristics |- |style="vertical-align: baseline;" | Mass | 1.10/0.91 M☉ |- |style="vertical-align: baseline;" | Radius | 1.23/0.87 R☉ |- |style="vertical-align: baseline;" | Luminosity | 1.57/0.51 L☉ |- |style="vertical-align: baseline;" | Temperature | 5,800/5,300 K |- |style="vertical-align: baseline;" | Metallicity | 130-230% Sun |- |style="vertical-align: baseline;" | Rotation | ? |- |style="vertical-align: baseline;" | Age | 5-6 × 109 years |- ! style="background-color: #FFFFC0;" colspan="2" | Visual binary orbit |- style="vertical-align: top;" | Companion | Alpha Centauri B |- style="vertical-align: top;" | Period (P) | 79.92 years |- style="vertical-align: top;" | Semimajor axis (a) | 17.515" |- style="vertical-align: top;" | Eccentricity (e) | 0.516 |- style="vertical-align: top;" | Inclination (i) | 79.24° |- style="vertical-align: top;" | Node (Ω) | 204.87° (ascending)° |- style="vertical-align: top;" | Periastron epoch (T) | 1955.56 |- ! style="background-color: #FFFFC0;" colspan="2" | Other designations |- | colspan="2" | α1 Cen, CP -60° 5483 A, Gliese 559A, FK5 538, HD 128620, HIP 71683, HR 5459, LHS 50, SAO 252838, YPC 3309.00
|} This table is composed of the following sub-templates:
Short star template
This template is for stubby star articles, and should be replaced with the full template when the article is expanded.
Footers
Extrasolar planets
Supernovae
Template: {{Supernova }} This is a table template that should be used for supernovae. It automatically assigns the article to Category:Supernovae. Star Clusters
Sample table for M22. Please modify and improve as needed. The template is for open and globular clusters. Galaxies{{subst:Galaxy
| name = Spiral Galaxy M109
| image = File:Messierobject109.jpg
CCD image of M109
| epoch = J2000.0
| type = SB(s)bc
| ra = 11h 57.6m 36.0s
| dec = +53° 23' 28"
| z = +0.003496
| dist_ly = 41 million ly
| appmag_v = +9.8
| size_v = 7.6' × 4.9'
| constellation name = Ursa Major
| radius_ly = 65,000 ly
| absmag_v = 13.4
| notes = Possible Milky Way-twin, Template: {{Galaxy}} This example table should be edited and used for galaxies. Notes: Please see List of galaxies to find galaxies that do not yet have infoboxes/factsheets. Galaxy cluster
This example table should be edited and used for galaxy groups, clusters, clouds, and superclusters. Types
NebulaePlanetary Nebulae
Template: {{Planetary nebula}} This example should be copied and used for all planetary nebulae. See List of planetary nebulae for articles on planetary nebulae. Please place new planetary nebulae on this list, and categorize in Category:Planetary nebulae, the category of its constellation, and the category of its catalog (ex:Category:Messier objects). Diffuse Nebulae
This example should be copied and used for all diffuse nebulae. See List of diffuse nebulae for articles on ddiffuse nebulae. Please place new diffuse nebulae on this list, and categorize in Category:Diffuse nebulae, the category of its constellation, and the category of its catalog (ex:Category:Messier objects). Dark Nebulae
Template: {{Dark nebula}} Currently (2005) there are only two dark nebulae on Wikipedia, see List of dark nebulae. Useful links
ParticipantsIn alphabetical order:
Pages needing attentionWikipedia:Pages needing attention/Mathematical and Natural Sciences/Astronomy [[Category:WikiProject Astronomy|Objects, astronomical]] [[fr:Wikipédia:Projet/Objets de l'Univers]] [[ja:Wikipedia:ウィキプロジェクト 天体]] [[ru:Википедия:Проект:Астрономические Объекты]] |
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