Yottagram rangeEdit

Following is a list of solar system objects more massive than 1021 kilograms (one yottagram [Yg]). Even the least massive of these objects is an approximate sphere.[1] Eris, a new trans-Neptunian object, is larger than Pluto but has an undetermined mass. An estimate is listed. See also List of planetary bodies.

Photographs of objects are on a black background; artists' impressions are on a grey background.
Rank Name Image Mass in Yg Mass in kg Mass (Vs. Earth) Type of object
1 Sun 1,988,435,000 Yg (1.988435 × 1030 kg) 332837 star
2 Jupiter 1,899,000 Yg (1.899 × 1027 kg) 317.87 5th planet
3 Saturn 568,460 Yg (5.6846 × 1026 kg) 95.152 6th planet
4 Neptune 102,430 Yg (1.0243 × 1026 kg) 17.145 8th planet
5 Uranus 86,832 Yg (8.6832 × 1025 kg) 14.534 7th planet
6 Earth 5,974.2 Yg (5.9742 × 1024 kg) 1 3rd planet
7 Venus 4,868.5 Yg (4.8685 × 1024 kg) 0.815 2nd planet
8 Mars 641.85 Yg (6.4185 × 1023 kg) 0.107 4th planet
9 Mercury 330.2 Yg (3.302 × 1023 kg) 0.0553 1st planet
10 * Ganymede 148.2 Yg (1.482 × 1023 kg) 2.48% satellite of Jupiter
11 * Titan 134.5 Yg (1.345 × 1023 kg) 2.25% satellite of Saturn
12 * Callisto 107.6 Yg (1.076 × 1023 kg) 1.8% satellite of Jupiter
13 * Io 89.3 Yg (8.9319 × 1022 kg) 1.5% satellite of Jupiter
14 * Moon 73.5 Yg (7.3477 × 1022 kg) 1.23% satellite of Earth
15 * Europa 48.0 Yg (4.80 × 1022 kg) 0.803% satellite of Jupiter
16 * Triton 21.5 Yg (2.147 × 1022 kg) 0.359% satellite of Neptune
17 Eris bgcolor=black align=right| ~16 Yg (~1.6 × 1022 kg)[2] ~0.27% dwarf planet
18 Pluto 13.1 Yg (1.305 ± 0.007 × 1022 kg) ~0.22% dwarf planet
19 (136108) Haumea
("Santa")
4.2 Yg (4.2 ± 0.1 × 1021 kg) ~0.069% Kuiper belt object
20 * Titania 3.5 Yg (3.526 × 1021 kg) ~0.059% satellite of Uranus
21 * Oberon 3.0 Yg (3.014 × 1021 kg) ~0.05% satellite of Uranus
22 90377 Sedna ~3 Yg (~3 × 1021 kg) ~0.05% TNO
23 * Rhea 2.3 Yg (2.3166 × 1021 kg) ~0.039% satellite of Saturn
24 50000 Quaoar ~2 Yg (~2 × 1021 kg) ~0.033% TNO
25 * Iapetus 2.0 Yg (1.9739 × 1021 kg) ~0.033% satellite of Saturn
26 * Charon 50px|center 1.5 Yg (1.52 ± 0.06 × 1021 kg) ~0.025% satellite of Pluto
27 * Ariel 1.4 Yg (1.35 × 1021 kg) ~0.022% satellite of Uranus
28 * Umbriel 1.2 Yg (1.2 × 1021 kg) ~0.020% satellite of Uranus
29 * Dione 1.1 Yg (1.096 × 1021 kg) ~0.018% satellite of Saturn
Leading asterisks (*) mark satellites.
  1. ^ Astronomical bodies form into rounded shapes (oblate spheroids) when the gravity of their own mass is sufficient to overcome the structural stength of their intrinsic materials and the friction between those materials. This is called gravitational collapse.
  2. ^ The mass of Eris is a very rough estimate based on a diameter of 2400 kilometers and a composition similar to that of the dwarf planet Pluto (density 2.03 g/cm³).