List of the brightest Kuiper belt objects

Since the year 2000, a number of Kuiper belt objects with diameters of between 500 and 1500 km have been discovered. 50000 Quaoar, a classical KBO discovered in 2002, is over 1000 km across. and, both announced on 29 July 2005, are larger still. Other objects, such as 28978 Ixion and 20000 Varuna measure roughly 500 km across. This has gradually led to the acceptance of Pluto as the largest member of the Kuiper belt.
The brightest known dwarf planets and other KBOs are:

Number	Permanent Designation	Provisional Designation	Absolute magnitude	Bond Albedo	Semimajor axis	Equatorial diameter	Date found	Discoverer	Diameter method
134340	'		−0.8	72	39.4	2377	1930	C. Tombaugh	direct imaging
136472	'		−0.2	80	45.6	1430	2005	M. Brown, C. Trujillo, D. Rabinowitz	occultation
136108			0.2	51	43.3	1595	2003	Sierra Nevada Observatory	occultation
	Charon	S/1978 P 1	1.0	20 to 50	39.4	1212	1978	J. Christy	direct imaging
90482	Orcus		2.2	23	39.3	910	2004	M. Brown, C. Trujillo, D. Rabinowitz	thermal
50000	Quaoar		2.4	11	43.7	1070	2002	C. Trujillo, M. Brown	thermal
174567	Varda		3.2	10	46.1	705	2003	J. A. Larsen	estimated
55565	Aya		3.3	11	47.2	768	2002	NEAT	thermal
55636			3.4	88	43.2	286	2002	NEAT	Haumea family, estimated
202421			3.5	20	43.2	498	2005	Palomar	estimated
307261	Máni		3.6	5	42.0	934	2002	C. Trujillo, M. Brown	thermal
208996	Achlys		3.6	10	39.4	772	2003	C. Trujillo, M. Brown	thermal
20000	Varuna		3.6	11	42.3	678	2000	Spacewatch	thermal
55637	Uni		3.6	11	42.5	665	2002	Spacewatch	thermal
28978	Ixion		3.6	14	39.8	617	2001	DES	thermal
145452	Ritona		3.7	11	41.6	679	2005	A. C. Becker, A. W. Puckett, J. Kubica	thermal
120178			3.9	70?	43.4	218?	2003	M. Brown, C. Trujillo, D. Rabinowitz	Haumea family, estimated