Solar System by apparent size: Difference between revisions
Jump to navigation
Jump to search
Nicole Sharp (talk | contribs) No edit summary |
Nicole Sharp (talk | contribs) No edit summary |
||
| (7 intermediate revisions by the same user not shown) | |||
| Line 1: | Line 1: | ||
<u>[[Solar System]]</u> objects sorted by angular diameter (apparent diameter).  Objects with angular diameters greater than about 1 to ½ of an arcsecond and transiting satellites with angular diameters greater than about ½ to ¼ of an arcsecond can theoretically be resolved by amateur telescopes under ideal seeing conditions. | |||
== minimum angular diameters == | |||
<ol start="0"> | |||
<li>180°, '''Planet Terra'''</li> | |||
<li>(31.477633133877767054679096275868 ± 0.0029551128269606612047486105298695)', '''Star Sol'''</li> | |||
<li>(29.819303636472614445417667957098 ± 0.0096862578055441211945453588402752)', '''Terran Satellite Luna'''</li> | |||
<li>(33.159669076755426476443372392270 ± 0.0089971814843987142886486730713841)", '''Planet Jupiter'''</li> | |||
<li>(14.678686960924656270109313417449 ± 0.0049094002655546655235419837164275)", '''Planet Saturn'''</li> | |||
<li>(13.344787507099331456628082902984 ± 0.0022051026964193540301592173017059)", '''Planet Venus'''</li> | |||
<li>(6.0096928766403224966258023933195 ± 0.00068019592882980055537539875878304)", '''Planet Mercury'''</li> | |||
<li>(4.7698865620477542663584032367593 ± 0.00014196624060303258751810475960605)", '''Planet Mars'''</li> | |||
<li>(3.4223653325507628807299127059015 ± 0.0027408759060746596099586009009516)", '''Planet Uranus'''</li> | |||
<li>(2.2118336467437559427103793771768 ± 0.0028217055150323473146748236149033)", '''Planet Neptune'''</li> | |||
<li>(1.3083628992194648224762369447488 ± 0.00014901868607682720204612762319518)", '''Jovian Satellite Ganymede'''</li> | |||
<li>(1.1973524061827979954954456275039 ± 0.00074514868136640627492683703515084)", '''Jovian Satellite Callisto'''</li> | |||
<li>(0.90220478385668260139264206458912 ± 0.00074600044303443443093994586958067)", '''Jovian Satellite Io'''</li> | |||
<li>(0.77505471560751979803462664785578 ± 0.00024828953386270602828053296700135)", '''Jovian Satellite Europa'''</li> | |||
<li>(0.69779167912007910714815231706525 ± 0.000024814241932850107938927799477864)", '''Saturnian Satellite Titan'''</li> | |||
</ol> | |||
== maximum angular diameters == | == maximum angular diameters == | ||
<ol start="0"> | <ol start="0"> | ||
| Line 23: | Line 43: | ||
<li>(0.69117155722191649628751546195186 ± 0.00012417891897229293892065704030910)", '''Minor Planet Vesta'''</li> | <li>(0.69117155722191649628751546195186 ± 0.00012417891897229293892065704030910)", '''Minor Planet Vesta'''</li> | ||
</ol> | </ol> | ||
* (0.26224700443933629069282618928564 ± 0.000017870938636195757578407958897337)", '''Saturnian Satellite Rhea''' | * (0.26224700443933629069282618928564 ± 0.000017870938636195757578407958897337)", '''Saturnian Satellite Rhea''' | ||
* (0.25714234397864741689302828177689 ± 0.000017891855224446917628298178731762)", '''Saturnian Satellite Iapetus''' | * (0.25714234397864741689302828177689 ± 0.000017891855224446917628298178731762)", '''Saturnian Satellite Iapetus''' | ||
== catalog == | |||
'''Number of Solar System objects by minimum angular diameter:''' | |||
* 8 objects (1 star, 6 planets, and 1 moon) are always at least 4 arcseconds in angular diameter. | |||
* 10 objects (1 star, 8 planets, and 1 moon) are always at least 2 arcseconds in angular diameter. | |||
* 12 objects (1 star, 8 planets, and 3 moons) are always at least 1 arcsecond in angular diameter. | |||
* 15 objects (1 star, 8 planets, and 6 moons) are always at least 0.5 arcseconds in angular diameter. | |||
'''Number of Solar System objects by maximum angular diameter:''' | |||
* 9 objects (1 star, 7 planets, and 1 moon) can be at least 4 arcseconds in angular diameter. | |||
* 10 objects (1 star, 8 planets, and 1 moon) can be at least 2 arcseconds in angular diameter. | |||
* 14 objects (1 star, 8 planets, and 5 moons) can be at least 1 arcsecond in angular diameter. | |||
* 18 objects (1 star, 8 major planets, 3 minor planets, and 6 moons) can be at least 0.5 arcseconds in angular diameter. | |||
== notes == | |||
Minimum angular diameter is calculated using the polar radius and a theoretical maximum observable distance.  Maximum observable distance is simplified here as when there is a right angle between Sol (or the host planet for satellites of superior planets), the object, and the observer.  Otherwise the maximum distance between the object and observer is when the object is behind Sol (or the host planet for satellites of superior planets) and thus invisible (occulted). | |||
Maximum angular diameter for inferior planets and satellites of superior planets is when those objects are in transit.  Maximum resolvable angular diameter for triaxial ellipsoids is calculated using the second equatorial radius. | |||
== see also == | |||
* <u>[[Solar System by size]]</u> | |||
* <u>[[Solar System data]]</u> | |||
[[category:astronomy]] | [[category:astronomy]] | ||
Latest revision as of 12:55, 10 June 2024
Solar System objects sorted by angular diameter (apparent diameter). Objects with angular diameters greater than about 1 to ½ of an arcsecond and transiting satellites with angular diameters greater than about ½ to ¼ of an arcsecond can theoretically be resolved by amateur telescopes under ideal seeing conditions.
minimum angular diameters
- 180°, Planet Terra
- (31.477633133877767054679096275868 ± 0.0029551128269606612047486105298695)', Star Sol
- (29.819303636472614445417667957098 ± 0.0096862578055441211945453588402752)', Terran Satellite Luna
- (33.159669076755426476443372392270 ± 0.0089971814843987142886486730713841)", Planet Jupiter
- (14.678686960924656270109313417449 ± 0.0049094002655546655235419837164275)", Planet Saturn
- (13.344787507099331456628082902984 ± 0.0022051026964193540301592173017059)", Planet Venus
- (6.0096928766403224966258023933195 ± 0.00068019592882980055537539875878304)", Planet Mercury
- (4.7698865620477542663584032367593 ± 0.00014196624060303258751810475960605)", Planet Mars
- (3.4223653325507628807299127059015 ± 0.0027408759060746596099586009009516)", Planet Uranus
- (2.2118336467437559427103793771768 ± 0.0028217055150323473146748236149033)", Planet Neptune
- (1.3083628992194648224762369447488 ± 0.00014901868607682720204612762319518)", Jovian Satellite Ganymede
- (1.1973524061827979954954456275039 ± 0.00074514868136640627492683703515084)", Jovian Satellite Callisto
- (0.90220478385668260139264206458912 ± 0.00074600044303443443093994586958067)", Jovian Satellite Io
- (0.77505471560751979803462664785578 ± 0.00024828953386270602828053296700135)", Jovian Satellite Europa
- (0.69779167912007910714815231706525 ± 0.000024814241932850107938927799477864)", Saturnian Satellite Titan
maximum angular diameters
- 180°, Planet Terra
- (34.142318167779726305388597288522 ± 0.0099504175490098189823746848993722)', Terran Satellite Luna
- (32.549089711594099381629815789191 ± 0.0030383154609148420537653582447128)', Star Sol
- (1.0905870349499817398048629211605 ± 0.00018025944492847952922209945619809)', Planet Venus
- (50.115577292011611607058157849591 ± 0.00072639900116543009038607598428538)", Planet Jupiter
- (25.700544451492779197449676308284 ± 0.00089158765308439455528175641371082)", Planet Mars
- (20.710741843720512704721266748230 ± 0.0005166370410419963595958474095447)", Planet Saturn
- (13.026519404358484128366613475607 ± 0.00068880719717083531267935096847384)", Planet Mercury
- (4.0813037952907347294343994483903 ± 0.0006389298287894383982434815333879)", Planet Uranus
- (2.3717005756662317185122893669135 ± 0.0023358462167698838697425224493574)", Planet Neptune
- (1.8500081168516263639525877660944 ± 0.00021081697115976641880998036484687)", Jovian Satellite Ganymede
- (1.6950999034452036167094676830048 ± 0.0010549338656223241325822742019151)", Jovian Satellite Callisto
- (1.2758186006115165938918458891654 ± 0.000035409569728211189330416823094472)", Jovian Satellite Io
- (1.0956010972639616311861538720115 ± 0.00035099902326891557679784173552623)", Jovian Satellite Europa
- (0.92630435820787173323928340729414 ± 0.0059958010235239682526821091198236)", Minor Planet Ceres
- (0.88573281563080150908143581596940 ± 0.00003509052596514345590963105473037)", Saturnian Satellite Titan
- (0.75246410914813015641116728905938 ± 0.016972874643896973338196523745709)", Minor Planet Pallas
- (0.69117155722191649628751546195186 ± 0.00012417891897229293892065704030910)", Minor Planet Vesta
- (0.26224700443933629069282618928564 ± 0.000017870938636195757578407958897337)", Saturnian Satellite Rhea
- (0.25714234397864741689302828177689 ± 0.000017891855224446917628298178731762)", Saturnian Satellite Iapetus
catalog
Number of Solar System objects by minimum angular diameter:
- 8 objects (1 star, 6 planets, and 1 moon) are always at least 4 arcseconds in angular diameter.
- 10 objects (1 star, 8 planets, and 1 moon) are always at least 2 arcseconds in angular diameter.
- 12 objects (1 star, 8 planets, and 3 moons) are always at least 1 arcsecond in angular diameter.
- 15 objects (1 star, 8 planets, and 6 moons) are always at least 0.5 arcseconds in angular diameter.
Number of Solar System objects by maximum angular diameter:
- 9 objects (1 star, 7 planets, and 1 moon) can be at least 4 arcseconds in angular diameter.
- 10 objects (1 star, 8 planets, and 1 moon) can be at least 2 arcseconds in angular diameter.
- 14 objects (1 star, 8 planets, and 5 moons) can be at least 1 arcsecond in angular diameter.
- 18 objects (1 star, 8 major planets, 3 minor planets, and 6 moons) can be at least 0.5 arcseconds in angular diameter.
notes
Minimum angular diameter is calculated using the polar radius and a theoretical maximum observable distance. Maximum observable distance is simplified here as when there is a right angle between Sol (or the host planet for satellites of superior planets), the object, and the observer. Otherwise the maximum distance between the object and observer is when the object is behind Sol (or the host planet for satellites of superior planets) and thus invisible (occulted).
Maximum angular diameter for inferior planets and satellites of superior planets is when those objects are in transit. Maximum resolvable angular diameter for triaxial ellipsoids is calculated using the second equatorial radius.