Discovery [1] | |
---|---|
Discovered by |
A. C. Becker A. W. Puckett J. Kubica |
Discovery site | Apache Point Obs. |
Discovery date | 20 October 2004 |
Designations | |
(144897) 2004 UX10 | |
TNO [2] · cubewano [3] [4] | |
Orbital characteristics [2] | |
Epoch 27 April 2019 ( JD 2458600.5) | |
Uncertainty parameter 2 | |
Observation arc | 65.21 yr (23,818 days) |
Aphelion | 40.591 AU |
Perihelion | 37.152 AU |
38.871 AU | |
Eccentricity | 0.0442 |
242.35 yr (88,520 days) | |
102.254 ° | |
0° 0m 14.76s / day | |
Inclination | 9.5316° |
147.90° | |
149.15° | |
Physical characteristics | |
Dimensions | 361+124 −94 km [5] 398±39 km [5] [6] |
Mass | > ≈ 3×1019 kg |
Mean
density | > 1.21 g/cm3 [7] |
Equatorial
surface gravity | > 0.06 m/s2 |
Equatorial
escape velocity | > 0.15 km/s |
7.58±0.05 h [8] | |
0.141+0.044 −0.031 [5] | |
B–V =0.95±0.02 V–R = 0.58±0.05 [5] C [6] | |
20.6 [9] | |
4.75±0.16
[5] 4.4 [2] | |
(144897) 2004 UX10 ( provisional designation 2004 UX10) is a Kuiper-belt object. It has a diameter of about 360 kilometres (220 mi) [5] and was discovered by Andrew Becker, Andrew Puckett and Jeremy Kubica on 20 October 2004 at Apache Point Observatory in Sunspot, New Mexico. [2] The object is classified as a cubewano. [3] [4] It is near a 2:3 resonance with Neptune. [5] [7]
It is estimated by astronomer Michael E. Brown to likely be a dwarf planet based on its presumed size, calculated from its absolute magnitude (H) and assumed albedo. [10]
Based on an integration of its motion over 10 million years, (144897) 2004 UX10 has been classified as a classical Kuiper belt object (cubewano). [3] It is near a 2:3 resonance with Neptune. [5] The object is currently at 39 AU from the Sun. [9]
The rotational period of (144897) 2004 UX10 is 7.58 hours. [8]
The size of (144897) 2004 UX10 was measured by the
Herschel Space Telescope to be 361+124
−94 km.
[5] The mass of the object is currently unknown but should be greater than about 3×1019 kg.
[7]
(144897) 2004 UX10 has a moderately red slope in the visible spectral range. Its visible spectrum does not show any features, although there is a small departure from the linearity near 0.8 μm. [11]