Fundamental Astronomy

Discoverer Year of a Psid e i r M ρ p V0
discovery
[103 km] [Rp] [d] [ ◦ ] [km] [Mplan] [g/cm3 ]
XIV Calypso Pascu 1980 294.66 4.89 1.888 15 × 8 × 8 1.0 18.7
Seidelmann
Baum
Currie
IV Dione Cassini 1684 377.40 6.26 2.737 0.002 0.02 560 1.9 × 10−6 1.5 0.7 10.4
XII Helene Laques 1980 377.40 6.26 2.737 0.005 0.0 18 × 16 × 15 0.7 18
Lecacheux
V Rhea Cassini 1672 527.04 8.74 4.517 0.001 0.35 764 4.1 × 10−6 1.2 0.7 9.7
VI Titan Huygens 1665 1,221.83 20.3 15.945 0.03 0.33 2575 2.4 × 10−4 1.9 0.22 8.3
VII Hyperion Bond 1848 1,481.1 24.6 21.277 0.10 0.43 180 × 140 × 113 4 × 10−8 1.4 0.3 14.2
VIII Iapetus Cassini 1671 3,561.3 59.1 79.330 0.028 14.72 718 2.8 × 10−6 1.0 0.5/0.05 11.1
IX Phoebe Pickering 1898 12,952 215 550.48 R 0.163 177 E 110 7 × 10−10 ? 0.06 16.4
Uranus
VI Cordelia Voyager 2 1986 49.77 1.95 0.335 0.00 0.08 13 0.07 24.1
VII Ophelia Voyager 2 1986 53.79 2.10 0.376 0.01 0.10 15 0.07 23.8
VIII Bianca Voyager 2 1986 59.17 2.32 0.435 0.00 0.19 21 0.07 23.0
IX Cressida Voyager 2 1986 61.78 2.42 0.464 0.00 0.01 31 0.07 22.2
X Desdemona Voyager 2 1986 62.68 2.45 0.474 0.00 0.11 27 0.07 22.5
XI Juliet Voyager 2 1986 64.35 2.52 0.493 0.00 0.07 42 0.07 21.5
XII Portia Voyager 2 1986 66.09 2.59 0.513 0.00 0.06 54 0.07 21.0
XIII Rosalind Voyager 2 1986 69.94 2.74 0.558 0.00 0.28 27 0.07 22.5
XIV Belinda Voyager 2 1986 75.26 2.94 0.624 0.00 0.03 33 0.07 22.1
XVIII S/1986U10 Karkoschka 1999 77.30 3.0 0.637 20 0.07
XV Puck Voyager 2 1985 86.01 3.37 0.762 0.00 0.32 77 0.07 20.2
V Miranda Kuiper 1948 129.39 5.06 1.413 0.003 4.2 240 × 234 × 233 8 × 10−7 1.3 0.27 16.3
I Ariel Lassell 1851 191.02 7.47 2.520 0.003 0.3 581 × 578 × 578 1.6 × 10−5 1.7 0.35 14.2
II Umbriel Lassell 1851 266.30 10.42 4.144 0.005 0.36 585 1.4 × 10−5 1.4 0.19 14.8
III Titania W. Herschel 1787 435.91 17.06 8.706 0.002 0.14 789 4.1 × 10−5 1.7 0.28 13.7
IV Oberon W. Herschel 1787 583.52 22.83 13.463 0.001 0.10 761 3.5 × 10−5 1.6 0.25 13.9
XVI Caliban Nicholson 1997 7,169 281 579 R 0.08 140 E 30 0.07 22.4
XVII Sycorax Nicholson 1997 12,214 477 1,289 R 0.5 153 E 60 0.07 20.9
C. Tables
Neptune
III Naiad Voyager 2 1989 48.23 1.95 0.294 0.000 4.74 29 0.06 24.7
IV Thalassa Voyager 2 1989 50.07 2.02 0.311 0.000 0.21 40 0.06 23.8
V Despina Voyager 2 1989 52.53 2.12 0.335 0.000 0.07 74 0.06 22.6
VI Galatea Voyager 2 1989 61.95 2.50 0.429 0.000 0.05 79 0.06 22.3
VII Larissa Voyager 2 1989 73.55 2.97 0.555 0.001 0.20 104 × 89 0.06 22.0
VIII Proteus Voyager 2 1989 117.65 4.75 1.122 0.000 0.55 218 × 208 × 201 0.06 20.3
I Triton Lassell 1846 354.76 14.33 5.877R 0.000 157.35 1353 2.1 × 10−4 2.1 0.77 13.5
II Nereid Kuiper 1949 5,513.4 222.6 360.136 0.751 27.6 170 2 × 10−7 1.0 0.4 18.7
451