S/2003 U 3
| S/2003 U 3 | |
|---|---|
 S/2003 U3 | |
| Opdaget | |
| 29. august 2003, af Scott S. Sheppard, og David C. Jewitt | |
| Kredsløb om Uranus | |
| Afstand til Uranus (massecenter) |
|
| Halve storakse | 14 345 000 km |
| Halve lilleakse | 10 766 812 km |
| Excentricitet | 0,6608 |
| Siderisk omløbstid | 4a 226d 0t 15m 0,0s |
| Synodisk periode | — |
| Omløbshastighed |
|
| Banehældning | 50,74° i fh. t. ekliptika, 76,26° i fh. t. Uranuss ækv. |
| Periapsisargument; ω | 0,000 ° |
| Opstigende knudes længde; Ω | 0,000 ° |
| Omgivelser | |
| — | |
| Fysiske egenskaber | |
| Diameter | 11,0 km |
| Fladtrykthed | — |
| Overfladeareal | 3,8·10² km² |
| Rumfang | 7,0·10² km³ |
| Masse | 10,000·1014 kg |
| Massefylde | 1500 kg/m³ |
| Tyngdeacc. v. ovfl. | 0,002 3 m/s² |
| Undvigelseshastighed v. ækv. | 18 km/t |
| Rotationstid | — |
| Aksehældning | ? |
| Nordpolens rektascension | — |
| Nordpolens deklination | — ° |
| Magnetfelt | — |
| Albedo | 4 % |
| Temperatur v. ovfl. | Gnsn. -208 °C Min. — °C Maks. — °C |
| Atmosfære | |
| Atmosfæretryk | 0 hPa |
| Atmosfærens sammensætning | — |
S/2003 U 3 er en af planeten Uranus' måner: Den blev opdaget den 29. august 2003 af Scott S. Sheppard og David C. Jewitt, og fik lige efter opdagelsen den midlertidige betegnelse S/2003 U 3.
Med en massefylde omkring 1500 kilogram pr. kubikmeter består S/2003 U 3 formodentlig overvejdende af is. Overfladen er temmelig mørk, og reflekterer blot 7 % af det lys der falder på den.
Medier brugt på denne side
S2003u3acircle.gif
These images show the discovery of the new Uranus satellite S/2003 U3 each about 7 minutes in exposure time taken about 30 minutes apart on UT August 29, 2003 with the Subaru 8.3 meter telescope atop Mauna Kea, Hawaii. The motion of the satellite clearly stands out compared to the steady state background of stars and galaxies. Uranus is not in the field, but is about a quarter of a degree to the North of these images. In the lower right corner is a main belt asteroid which trailed during the exposure because of its faster motion than the satellite. Images on the right are the same as those on the left except that they have a yellow circle showing the location and movement of the new satellite.
These images show the discovery of the new Uranus satellite S/2003 U3 each about 7 minutes in exposure time taken about 30 minutes apart on UT August 29, 2003 with the Subaru 8.3 meter telescope atop Mauna Kea, Hawaii. The motion of the satellite clearly stands out compared to the steady state background of stars and galaxies. Uranus is not in the field, but is about a quarter of a degree to the North of these images. In the lower right corner is a main belt asteroid which trailed during the exposure because of its faster motion than the satellite. Images on the right are the same as those on the left except that they have a yellow circle showing the location and movement of the new satellite.