Neha Patil (Editor)

(82075) 2000 YW134

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Discovered by
Kitt Peak

MPC designation
(82075) 2000 YW134

26 December 2000


Discovery date
26 December 2000

Observation arc
5546 days (15.18 yr)

Absolute magnitude


Minor planet category
3:8 resonance? Detached?

75.202 AU (11.2501 Tm) (Q)

Discovery site
Kitt Peak National Observatory

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(82075) 2000 YW134, provisionally known as 2000 YW134, is a binary trans-Neptunian object (TNO). It is likely in 3:8 resonance with Neptune or possibly a detached object.


Physical characteristics

Assuming a generic TNO albedo of 0.09, the primary is about 431 kilometres (268 mi) in diameter with its secondary at 237 kilometres (147 mi) in diameter. In 2010, (82075) 2000 YW134 was observed by the Herschel Space Telescope in the far-infrared. No thermal radiation has been detected, which allowed astronomers to place an upper limit on its size; the single-object diameter should be less than 500 kilometres (310 mi).

In the visible part of the spectrum, the surface of (82075) 2000 YW134 is moderately red.


Possible dwarf planet

With a generically estimated diameter of 430 kilometres (270 mi), (82075) 2000 YW134 is a possible dwarf planet.

Uncertain category

(82075) 2000 YW134 currently has a perihelion distance of 41 astronomical units (AU). In 2006, Lykawka, using a 4–5 Gyr integration, indicated that (82075) 2000 YW134 is a detached object with perihelion larger than 40 AU. However, the Deep Ecliptic Survey, using a 10My integration (last observation: 2007-11-10), shows it to be in 3:8 resonance with Neptune, with a minimum perihelion distance of 38.1 AU. In 2007, Emel’yanenko and Kiseleva showed an 84% probability that it is in the 3:8 resonance.


The moon of (82075) 2000 YW134 is relatively large compared to the primary, because the moon is only 1.3 magnitudes fainter than the primary.


(82075) 2000 YW134 Wikipedia