List of solar system objects by radius
From Wikipedia, the free encyclopedia
- List of solar system objects: By orbit—By mass—By radius—By name
- See also: Solar system
This is a list of solar system objects by radius, arranged in descending order of mean volumetric radius. This list is not exhaustive; it contains the Sun, the planets, several natural satellites, and a number of other notable objects.
The ordering is not the same as the order of a list of solar system objects by mass because some objects are denser than others. For instance Uranus is bigger than Neptune but less massive, and although Ganymede and Titan are larger than Mercury, they have less than half its mass.
Several new trans-Neptunian objects have been discovered of significant size. While their radius remains provisional due to the recency of discovery, and is often expressed as a range, the approximate locations in this list are shown.
[edit] List
| Rank | Body | Image | Mean Radius (km) | Mean Radius (vs. Earth) | Volume (billion km3) | Volume (vs. Earth) |
|---|---|---|---|---|---|---|
| 1 | Sun |  |
696000 | 109.25 | 1412000000 | 1303781 |
| 2 | Jupiter |  |
69911 | 10.97 | 1431280 | 1321 |
| 3 | Saturn |  |
58232 | 9.14 | 827130 | 764 |
| 4 | Uranus |  |
25362 | 3.98 | 68340 | 63.1 |
| 5 | Neptune |  |
24622 | 3.87 | 62540 | 57.7 |
| 6 | Earth |  |
6371.0 | 1 | 1083.21 | 1 |
| 7 | Venus |  |
6051.8 | 0.950 | 928.43 | 0.857 |
| 8 | Mars |  |
3390.0 | 0.532 | 163.18 | 0.151 |
| 9 | Ganymede* |  |
2631.2 | 0.413 | 76.30 | 0.0704 |
| 10 | Titan* |  |
2575 | 0.404 | 71.52 | 0.0660 |
| 11 | Mercury |  |
2439.7 | 0.383 | 60.83 | 0.0562 |
| 12 | Callisto* |  |
2410.3 | 0.378 | 58.65 | 0.0541 |
| 13 | Io* |  |
1821.5 | 28.6% | 25.32 | 2.34% |
| 14 | Moon |  |
1737.1 | 27.3% | 21.958 | 2.03% |
| 15 | Europa* |  |
1561 | 24.5% | 15.93 | 1.47% |
| 16 | Triton* |  |
1353.4 | 21.2% | 10.38 | 0.96% |
| 17 | Eris*** |  |
1200 ± 50 | 19% | 7 | 0.7% |
| 18 | Pluto |  |
1153 | 18.1% | 6.39 | 0.59% |
| (136472) 2005 FY9*** |  |
800-1000 | 12.6-15.7% | |||
| Titania** |  |
788.9 | 12.4% | 2.06 | 0.19% | |
| Rhea** |  |
764.4 | 12.0% | 1.87 | 0.17% | |
| Oberon* |  |
761.4 | 12.0% | 1.85 | 0.17% | |
| (136108) 2003 EL61*** |  |
~745 (980 x 759 x 498) | 11.7% | |||
| 90377 Sedna*** | 590-900 | 9-14% | ||||
| Iapetus* |  |
736 | 11.3% | 1.55 | 0.14% | |
| 90482 Orcus*** | 420-940 | 6.6-14.8% | ||||
| 50000 Quaoar* |  |
535-725 | 8.4-11.4% | |||
| Charon* |  |
606 | 9.5% | 0.87 93 | 0.09% | |
| Umbriel* |  |
584.7 | 9.2% | 0.84 | 0.08% | |
| Ariel** |  |
578.9 | 9.1% | 0.81 | 0.08% | |
| Dione* |  |
561.6 | 8.8% | 0.73 | 0.07% | |
| Tethys** |  |
533 | 8.3% | 0.624 | 0.06% | |
| (84522) 2002 TC302*** | 470-595 | |||||
| Ceres** |  |
475 | 7.6% | 0.437 | 0.04% | |
| 20000 Varuna*** | 380-510 | 8.3% | 0.624 | 0.06% | ||
| (55637) 2002 UX25*** | 419 | |||||
| 28978 Ixion* | <411 | 7.3% | 0.421 | 0.038% | ||
| 2002 MS4*** | 210-595 | |||||
| 2003 MW12*** | ~382 | |||||
| 2006 QH181*** | ~382 | |||||
| 2004 XR190*** | 250-500 | |||||
| (145452) 2005 RN43*** | ~365 | |||||
| (24835) 1995 SM55*** | ~352 | |||||
| (55565) 2002 AW197*** | 325-375 | |||||
| (90568) 2004 GV9*** | ~348 | |||||
| (145453) 2005 RR43*** | ~348 | |||||
| 2003 AZ84*** | 343 | |||||
| (120178) 2003 OP32*** | ~333 | |||||
| (42301) 2001 UR163*** | ~318 | |||||
| (84922) 2003 VS2*** | ~318 | |||||
| (15874) 1996 TL66*** | ~316 | |||||
| (55636) 2002 TX300*** | 265?-355 | |||||
| (119951) 2002 KX14*** | ~290 | |||||
| 2003 QW90*** | ~290 | |||||
| (120347) 2004 SB60*** | ~290 | |||||
| (145451) 2005 RM43*** | ~290 | |||||
| 19521 Chaos*** | ~280 | |||||
| (120348) 2004 TY364*** | ~277 | |||||
| (19308) 1996 TO66*** | 165-375 | |||||
| 4 Vesta** |  |
265 | 4.2% | 0.078 | 0.007% | |
| 2 Pallas** | 265 | 4.2% | 0.078 | 0.007% | ||
| 2002 KW14*** | ~264 | |||||
| 2004 PR107*** | ~264 | |||||
| (144897) 2004 UX10*** | ~264 | |||||
| Enceladus** |  |
252.1 | 3.9% | 0.067 | 0.006% | |
| (26375) 1999 DE9*** | ~252 | |||||
| 2001 QF298*** | ~252 | |||||
| (145480) 2005 TB190*** | ~252 | |||||
| 38628 Huya*** | 150-350 | |||||
| Miranda** |  |
235.8 | 3.7% | 0.055 | 0.005% | |
| 2003 QX113*** | ~230 | |||||
| (35671) 1998 SN165*** | ~229 | |||||
| 2000 CN105*** | ~220 | |||||
| 2002 XV93*** | ~220 | |||||
| (120132) 2003 FY128*** | ~220 | |||||
| (82075) 2000 YW134*** | ~216 | |||||
| 1999 CD158*** | ~210 | |||||
| 2002 CY248*** | ~210 | |||||
| (119979) 2002 WC19*** | ~210 | |||||
| Proteus** |  |
209 | 3.3% | 0.038 | 0.0035% | |
| 10 Hygiea** | 205 | 3.2% | 0.036 | 0.003% | ||
| (47171) 1999 TC36*** | ~205 | |||||
| (26181) 1996 GQ21*** | ~200 | |||||
| 2003 UZ117*** | ~200 | |||||
| 2006 HH123*** | ~200 | |||||
| Mimas** |  |
198.3 | 3.1% | 0.033 | 0.003% |
- * Using equatorial radius and assuming body is spherical
- ** Using three radii and assuming body is spheroid
- *** Radius is known only very approximately
