List of dwarf planet candidates

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At present, the International Astronomical Union categorises three objects in the Solar System as dwarf planets: Ceres, Pluto, and Eris. In addition, the asteroids 4 Vesta, 2 Pallas and 10 Hygiea, as well as Pluto's moon Charon, have been identified as possible candidates. There are also an increasing number of potential candidates in the Kuiper belt and beyond.[1] There are about 70 candidates now, but it is possible that this number will increase to up to 2000.

The following is a list of several Trans-Neptunian objects that may qualify as dwarf planets since they exhibit a diameter of at least 400km.

Contents

[edit] With diameters above 900km

Possible dwarf planets
Name Category Diameter (km) Mass
(1020 kg)		 Average
orbit
radius (AU)[1]
by [1] by [2] others
2003 EL61
("Santa")		 Cubewano 2000 1380 ~42 43.31
Sedna Scattered-Extended object 1800 1500 17-61 486.0
2005 FY9
("Easterbunny")		 Cubewano 1600 1503 ~40 45.66
Quaoar Cubewano 1290 1260 755-1050 [3] 10-26 43.58
Orcus Plutino 1100 909 875-1020 [3]; 6.2 - 7.0 39.34
Ixion Plutino 980 570 430-710 [3]; 900-1230 [4] ~5.8 39.65
2002 AW197 Cubewano 940 793 625-850[3]; 770-1010 [4] ~5.2 47.30

[edit] With diameters between 500 and 900km

Name Category Diameter (km) Mass (* 1020 kg) Average distance
from the Sun (AU)[1]
by [1] by [2] others
(55637) 2002 UX25 Cubewano 810 649 570-795 [3] ~7.9 42.53
2005 QU182 SDO? 801
(55636) 2002 TX300 Cubewano 800 709 1.6 - 3.7 43.11
Varuna Cubewano 780 874 755-1025 [5]; 480-800 [3] ~5.9 42.90
(174567) 2003 MW12 Cubewano 740 838 45.94
2002 MS4 other TNO 740 726 600-850 [3] 41.90
(145452) 2005 RN43 other TNO 740 730 41.53
(84522) 2002 TC302 Scattered disc object 710 1200 920-1480[3] ~.78 55.02
2003 AZ84 plutino 710 686 590-785 km[3] 39.45
(90568) 2004 GV9 Cubewano 680 677 610-750 [3] 42.23
(145453) 2005 RR43 Cubewano? 697
(120178) 2003 OP32 Cubewano 650 666 43.24
(42301) 2001 UR163 Scattered-Extended object 620 636 51.40
(15874) 1996 TL66 Scattered disk object 632
(84922) 2003 VS2 Plutino 610 725 540-925 [3] 39.27
(119951) 2002 KX14 plutino? 560 560 380-780 [3] 39.01
(19308) 1996 TO66 Cubewano 540 900 43.19
(120347) 2004 SB60 other TNO 560 580 41.97
2003 QW90 other TNO 560 580 43.65
(145451) 2005 RM43 SDO 560 580 89.73
2004 XR190 SDO 540 554 57.36
(120348) 2004 TY364 other TNO 540 554 38.72
2004 PR107 cubewano? 520 529 45.75
2002 KW14 other TNO 510 529 47.08

[edit] With diameter between 400 and 500 km

Name Category Diameter (km) Average distance
from the Sun (AU)[1]
2001 QF298 plutino 490 [1]; 505 [2] 39.30
(26375) 1999 DE9 resonance 4:3 490 [1]; 505 [2] 55.72
38628 Huya plutino 480 [1]; 480 [2] 39.76
(24835) 1995 SM55 other TNO 470 [1]; 702 [2] 41.64
19521 Chaos Cubewano 450 [1]; 745 km[2] 45.56
2003 QX113 other TNO 450 [1]; 461 [2] 49.56
(47171) 1999 TC36 440 [1] 39.27
(120132) 2003 FY128 430 [1] 49.77
(82075) 2000 YW134 430 [1] 57.77
2002 XV93 430 [1] 39.22
2000 CN105 430 [1] 44.65
1999 CD158 410 [1] 43.69
(79360) 1997 CS29 410 [1] 43.87
2002 CY248 410 [1] 46.18
(119979) 2002 WC19 410 [1] 47.67

[edit] References

  1. ^ a b c d e f g h i j k l m n o p q r s t u Mike Brown. The Dwarf Planets. Retrieved on 2008-01-20.
  2. ^ a b c d e f g h Robert Johnston. List of Known Trans-Neptunian Objects. Retrieved on 2008-01-20.
  3. ^ a b c d e f g h i j k l Barucci, M.A.; John Stansberry, Will Grundy, Mike Brown, Dale Cruikshank, John Spencer, David Trilling, Jean-Luc Margot (2007). "Physical Properties of Kuiper Belt and Centaur Objects: Constraints from Spitzer Space Telescope". Kuiper Belt. 
  4. ^ a b David Jewitt. Kluipert Belt. Retrieved on 2008-01-22.
  5. ^ Dave Jewitt: Size and Albedo of Kuiper Belt Object (20000) Varuna

[edit] External links

[edit] See also

v • d • e
Trans-Neptunian dwarf planets and candidates
Kuiper belt
Scattered disc
2002 TC302 · 2006 QH181 · Eris · 2007 UK126 · 2005 QU182 · Sedna
See also Triton · Astronomical objects and List of objects in the Solar System (by radius · by mass)
For a pronunciation guide, see Centaur and TNO pronunciation.