List of unnumbered trans-Neptunian objects: 2011
The following is a partial list of unnumbered trans-Neptunian objects for principal designations assigned within 2011. As of November 2025, it contains a total of 91 bodies.[1][2][3][4][5] For more information see the description on the main page. Also see list for the previous and next year.
2011
| Designation | First Observed (discovered) | D (km) | Orbital description | Remarks | Refs | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Date | Observer (Site) |
Class | a (AU) |
e | i (°) |
q (AU) |
Q (AU) | ||||
| 2011 BN170 | 30 January 2011 | Pan-STARRS 1 (F51) | 172 | SDO | 71.7 | 0.51 | 12 | 34.9 | 108.4 | — | MPC · JPL |
| 2011 BS163 | 30 January 2011 | Pan-STARRS 1 (F51) | 178 | cubewano (cold) | 43.9 | 0.05 | 5 | 41.6 | 46.1 | — | MPC · JPL |
| 2011 BT163 | 30 January 2011 | Pan-STARRS 1 (F51) | 236 | res · 5:12 | 54.2 | 0.34 | 33 | 35.8 | 72.6 | — | MPC · JPL |
| 2011 BU163 | 30 January 2011 | Pan-STARRS 1 (F51) | 141 | res · 3:8? | 57.9 | 0.38 | 21 | 35.7 | 80.1 | — | MPC · JPL |
| 2011 CW119 | 2 February 2011 | Pan-STARRS 1 (F51) | 112 | res · 3:7 | 53.2 | 0.37 | 20 | 33.4 | 72.9 | — | MPC · JPL |
| 2011 CX119 | 4 February 2011 | Pan-STARRS 1 (F51) | 233 | cubewano (hot)? | 41.8 | 0.14 | 27 | 35.9 | 47.8 | — | MPC · JPL |
| 2011 CY119 | 4 February 2011 | Pan-STARRS 1 (F51) | 135 | res · 1:3? | 62.9 | 0.37 | 22 | 39.6 | 86.1 | — | MPC · JPL |
| 2011 EZ90 | 14 March 2011 | Pan-STARRS 1 (F51) | 238 | cubewano (hot)? | 41.2 | 0.07 | 27 | 38.2 | 44.1 | — | MPC · JPL |
| 2011 GM89 | 4 April 2011 | Las Campanas Obs. (304) | 143 | SDO | 52.6 | 0.31 | 17 | 36.5 | 68.7 | — | MPC · JPL |
| 2011 HD103 | 28 April 2011 | New Horizons KBO Search (268) | 77 | other TNO | 43.9 | 0.26 | 6 | 32.5 | 55.4 | — | MPC · JPL |
| 2011 HE103 | 28 April 2011 | New Horizons KBO Search (268) | 91 | cubewano (hot)? | 43.6 | 0.11 | 7 | 38.9 | 48.3 | — | MPC · JPL |
| 2011 HF103 | 29 April 2011 | New Horizons KBO Search (268) | 118 | cubewano (cold) | 42.8 | 0.05 | 3 | 40.7 | 45 | — | MPC · JPL |
| 2011 HJ103 | 28 April 2011 | New Horizons KBO Search (268) | 116 | cubewano (hot) | 46.4 | 0.15 | 5 | 39.3 | 53.4 | — | MPC · JPL |
| 2011 HK103 | 28 April 2011 | New Horizons KBO Search (268) | 110 | other TNO | 53 | 0.31 | 6 | 36.6 | 69.4 | — | MPC · JPL |
| 2011 HL103 | 28 April 2011 | Magellan-Clay Telescope (268) | 98 | res · 3:5 | 42.3 | 0.17 | 15 | 35.2 | 49.5 | — | MPC · JPL |
| 2011 HN104 | 30 April 2011 | Pan-STARRS 1 (F51) | 121 | plutino | 39.2 | 0.29 | 18 | 27.8 | 50.6 | — | MPC · JPL |
| 2011 HO60 | 26 April 2011 | La Silla Obs. (809) | 215 | res · 2:11 | 92.9 | 0.61 | 22 | 36.6 | 149.1 | — | MPC · JPL |
| 2011 HP83 | 29 April 2011 | La Silla Obs. (809) | 395 | SDO | 52.1 | 0.31 | 29 | 36.1 | 68 | — | MPC · JPL |
| 2011 HZ102 | 28 April 2011 | New Horizons KBO Search (268) | 66 | cubewano (cold) | 43 | 0.01 | 2 | 42.7 | 43.4 | — | MPC · JPL |
| 2011 JA32 | 2 May 2011 | New Horizons KBO Search (268) | 54 | cubewano (cold) | 46.4 | 0.13 | 3 | 40.3 | 52.5 | — | MPC · JPL |
| 2011 JD32 | 1 May 2011 | Magellan-Clay Telescope (268) | 69 | SDO | 50.9 | 0.34 | 13 | 33.7 | 68.1 | — | MPC · JPL |
| 2011 JW31 | 4 May 2011 | New Horizons KBO Search (268) | 86 | cubewano (cold) | 45.4 | 0.09 | 2 | 41.2 | 49.7 | — | MPC · JPL |
| 2011 JY31 | 4 May 2011 | New Horizons KBO Search (268) | 79 | cubewano (cold) | 43.8 | 0.06 | 3 | 41.4 | 46.3 | — | MPC · JPL |
| 2011 KW48 | 29 May 2011 | New Horizons KBO Search-Subaru (266) | 64 | other TNO | 37.5 | 0.14 | 4 | 32.4 | 42.7 | — | MPC · JPL |
| 2011 LJ29 | 6 June 2011 | Pan-STARRS 1 (F51) | 262 | cubewano (cold) | 43.9 | 0.08 | 0 | 40.4 | 47.5 | — | MPC · JPL |
| 2011 OB60 | 27 July 2011 | Pan-STARRS 1 (F51) | 157 | SDO | 101.8 | 0.64 | 20 | 36.7 | 167 | — | MPC · JPL |
| 2011 OM78 | — | — | — | — | 103.3 | 0.64 | 19 | 36.7 | 170 | — | MPC · JPL |
| 2011 OR17 | 29 July 2011 | Siding Spring Survey (E12) | 15 | damocloid | 272.3 | 0.99 | 110 | 3.1 | 541.6 | — | MPC · JPL |
| 2011 SW281 | 26 September 2011 | Pan-STARRS 1 (F51) | 176 | cubewano (cold) | 46.9 | 0.1 | 5 | 42.2 | 51.6 | — | MPC · JPL |
| 2011 UA411 | 26 October 2011 | M. Alexandersen (568) | 67 | plutino | 39.6 | 0.25 | 9 | 29.7 | 49.5 | — | MPC · JPL |
| 2011 UA412 | 24 October 2011 | M. Alexandersen (568) | 62 | cubewano (cold) | 46.6 | 0.15 | 3 | 39.4 | 53.7 | — | MPC · JPL |
| 2011 UA413 | 26 October 2011 | M. Alexandersen (568) | 69 | res · 3:4 | 36.8 | 0.14 | 5 | 31.8 | 41.8 | — | MPC · JPL |
| 2011 UB411 | 26 October 2011 | M. Alexandersen (568) | 123 | plutino? | 39.8 | 0.04 | 15 | 38.1 | 41.6 | — | MPC · JPL |
| 2011 UB412 | 24 October 2011 | M. Alexandersen (568) | 124 | cubewano (hot)? | 43.7 | 0.06 | 15 | 41.4 | 46.1 | — | MPC · JPL |
| 2011 UC412 | 24 October 2011 | M. Alexandersen (568) | 93 | cubewano (cold) | 43.7 | 0.07 | 3 | 40.4 | 46.9 | — | MPC · JPL |
| 2011 UD411 | 26 October 2011 | M. Alexandersen (568) | 187 | plutino | 39.5 | 0.29 | 16 | 28 | 50.9 | — | MPC · JPL |
| 2011 UD412 | 24 October 2011 | M. Alexandersen (568) | 197 | cubewano (hot) | 45.7 | 0.06 | 6 | 43.1 | 48.3 | — | MPC · JPL |
| 2011 UE411 | 24 October 2011 | M. Alexandersen (568) | 52 | twotino | 48.1 | 0.33 | 9 | 32.4 | 63.8 | — | MPC · JPL |
| 2011 UE412 | 24 October 2011 | M. Alexandersen (568) | 216 | cubewano (hot)? | 43.7 | 0.11 | 23 | 39 | 48.4 | — | MPC · JPL |
| 2011 UF411 | 26 October 2011 | M. Alexandersen (568) | 77 | twotino | 48.3 | 0.35 | 6 | 31.3 | 65.3 | — | MPC · JPL |
| 2011 UF412 | 24 October 2011 | M. Alexandersen (568) | 78 | cubewano (cold) | 45.3 | 0.01 | 2 | 45.1 | 45.6 | — | MPC · JPL |
| 2011 UG411 | 26 October 2011 | M. Alexandersen (568) | 71 | twotino | 48 | 0.14 | 11 | 41.1 | 54.9 | — | MPC · JPL |
| 2011 UG412 | 26 October 2011 | M. Alexandersen (568) | 95 | cubewano (cold) | 46.8 | 0.16 | 3 | 39.4 | 54.1 | — | MPC · JPL |
| 2011 UH411 | 24 October 2011 | M. Alexandersen (568) | 70 | other TNO | 46.5 | 0.25 | 27 | 35.1 | 57.9 | — | MPC · JPL |
| 2011 UH412 | 26 October 2011 | M. Alexandersen (568) | 108 | cubewano (hot)? | 42.9 | 0.12 | 15 | 37.7 | 48.1 | — | MPC · JPL |
| 2011 UJ411 | 24 October 2011 | M. Alexandersen (568) | 78 | res · 3:5 | 42.6 | 0.13 | 5 | 37.3 | 47.9 | — | MPC · JPL |
| 2011 UJ412 | 26 October 2011 | M. Alexandersen (568) | 113 | cubewano (hot)? | 42.3 | 0.03 | 30 | 41.1 | 43.4 | — | MPC · JPL |
| 2011 UK412 | 26 October 2011 | M. Alexandersen (568) | 124 | cubewano (hot)? | 41 | 0.1 | 26 | 37.1 | 44.9 | — | MPC · JPL |
| 2011 UK413 | 25 October 2011 | Pan-STARRS 1 (F51) | 231 | cubewano (hot)? | 41.8 | 0.09 | 14 | 38.1 | 45.5 | — | MPC · JPL |
| 2011 UL411 | 24 October 2011 | M. Alexandersen (568) | 68 | res · 3:5 | 42.5 | 0.08 | 2 | 39.2 | 45.8 | — | MPC · JPL |
| 2011 UL412 | 26 October 2011 | M. Alexandersen (568) | 136 | cubewano (hot) | 43.3 | 0.08 | 10 | 39.8 | 46.7 | — | MPC · JPL |
| 2011 UM411 | 24 October 2011 | M. Alexandersen (568) | 124 | res · 3:5 | 42.4 | 0.14 | 9 | 36.4 | 48.5 | — | MPC · JPL |
| 2011 UM412 | 26 October 2011 | M. Alexandersen (568) | 94 | cubewano (hot) | 45.7 | 0.14 | 11 | 39.5 | 51.8 | — | MPC · JPL |
| 2011 UN411 | 26 October 2011 | M. Alexandersen (568) | 54 | res · 3:5 | 42.7 | 0.22 | 3 | 33.5 | 51.9 | — | MPC · JPL |
| 2011 UN412 | 24 October 2011 | M. Alexandersen (568) | 97 | plutino? | 39.2 | 0.06 | 20 | 37 | 41.3 | — | MPC · JPL |
| 2011 UO411 | 26 October 2011 | M. Alexandersen (568) | 68 | res · 3:5 | 42.6 | 0.21 | 5 | 33.6 | 51.7 | — | MPC · JPL |
| 2011 UO412 | 26 October 2011 | M. Alexandersen (568) | 97 | other TNO | 38.2 | 0.12 | 28 | 33.5 | 43 | — | MPC · JPL |
| 2011 UP410 | 24 October 2011 | M. Alexandersen (568) | 102 | plutino | 39.9 | 0.18 | 3 | 32.7 | 47.2 | — | MPC · JPL |
| 2011 UP411 | 26 October 2011 | M. Alexandersen (568) | 78 | res · 1:4 | 76.8 | 0.5 | 13 | 38.6 | 115 | — | MPC · JPL |
| 2011 UP412 | 24 October 2011 | M. Alexandersen (568) | 86 | SDO | 57 | 0.35 | 20 | 36.9 | 77 | — | MPC · JPL |
| 2011 UQ410 | 24 October 2011 | M. Alexandersen (568) | 62 | plutino | 39.7 | 0.27 | 3 | 29.2 | 50.2 | — | MPC · JPL |
| 2011 UQ411 | 26 October 2011 | M. Alexandersen (568) | 150 | SDO | 62.8 | 0.41 | 40 | 37.3 | 88.3 | — | MPC · JPL |
| 2011 UQ412 | 24 October 2011 | M. Alexandersen (568) | 107 | res · 3:10? | 68.4 | 0.49 | 17 | 34.8 | 102 | — | MPC · JPL |
| 2011 UR410 | 24 October 2011 | M. Alexandersen (568) | 56 | plutino | 39.8 | 0.28 | 17 | 28.8 | 50.7 | — | MPC · JPL |
| 2011 UR411 | 26 October 2011 | M. Alexandersen (568) | 75 | SDO | 62.7 | 0.44 | 27 | 35 | 90.3 | — | MPC · JPL |
| 2011 UR412 | 26 October 2011 | M. Alexandersen (568) | 66 | SDO | 50.6 | 0.32 | 18 | 34.3 | 66.9 | — | MPC · JPL |
| 2011 US410 | 24 October 2011 | M. Alexandersen (568) | 97 | plutino | 39.7 | 0.25 | 12 | 29.6 | 49.8 | — | MPC · JPL |
| 2011 US411 | 26 October 2011 | M. Alexandersen (568) | 54 | res · 1:3 | 63.3 | 0.51 | 22 | 31.3 | 95.3 | — | MPC · JPL |
| 2011 US412 | 24 October 2011 | M. Alexandersen (568) | 98 | cubewano (cold)? | 48.2 | 0.17 | 3 | 40.3 | 56.2 | — | MPC · JPL |
| 2011 UT411 | 26 October 2011 | M. Alexandersen (568) | 113 | res · 2:5 | 56 | 0.41 | 6 | 33.2 | 78.8 | — | MPC · JPL |
| 2011 UT412 | 26 October 2011 | M. Alexandersen (568) | 130 | cubewano (hot)? | 48.3 | 0.18 | 18 | 39.6 | 57 | — | MPC · JPL |
| 2011 UU410 | 24 October 2011 | M. Alexandersen (568) | 54 | plutino | 39.6 | 0.27 | 13 | 29 | 50.3 | — | MPC · JPL |
| 2011 UU411 | 24 October 2011 | M. Alexandersen (568) | 90 | cubewano (cold) | 44.2 | 0.04 | 2 | 42.7 | 45.8 | — | MPC · JPL |
| 2011 UU412 | 26 October 2011 | Mauna Kea Obs. (568) | 56 | plutino? | 39.3 | 0.17 | 23 | 32.8 | 45.9 | — | MPC · JPL |
| 2011 UV410 | 24 October 2011 | M. Alexandersen (568) | 129 | plutino | 39.7 | 0.26 | 4 | 29.3 | 50.1 | — | MPC · JPL |
| 2011 UV411 | 24 October 2011 | M. Alexandersen (568) | 78 | cubewano (cold) | 43.6 | 0.07 | 4 | 40.7 | 46.6 | — | MPC · JPL |
| 2011 UV412 | 24 October 2011 | Mauna Kea Obs. (568) | 93 | other TNO | 48.9 | 0.3 | 12 | 34.2 | 63.6 | — | MPC · JPL |
| 2011 UW410 | 26 October 2011 | M. Alexandersen (568) | 107 | plutino | 39.8 | 0.22 | 11 | 31.2 | 48.4 | — | MPC · JPL |
| 2011 UW411 | 24 October 2011 | M. Alexandersen (568) | 71 | cubewano (cold) | 44.2 | 0.17 | 5 | 36.6 | 51.7 | — | MPC · JPL |
| 2011 UW412 | 26 October 2011 | Mauna Kea Obs. (568) | 60 | SDO | 79.1 | 0.53 | 13 | 37.5 | 120.8 | — | MPC · JPL |
| 2011 UX410 | 26 October 2011 | M. Alexandersen (568) | 107 | plutino | 39.7 | 0.33 | 17 | 26.5 | 52.9 | — | MPC · JPL |
| 2011 UX411 | 24 October 2011 | M. Alexandersen (568) | 94 | cubewano (hot) | 42.7 | 0.1 | 7 | 38.5 | 46.9 | — | MPC · JPL |
| 2011 UX412 | 24 October 2011 | Mauna Kea Obs. (568) | 113 | cubewano (hot)? | 44.4 | 0.08 | 30 | 41 | 47.8 | — | MPC · JPL |
| 2011 UY410 | 26 October 2011 | M. Alexandersen (568) | 71 | plutino | 39.6 | 0.14 | 9 | 34 | 45.2 | — | MPC · JPL |
| 2011 UY411 | 24 October 2011 | M. Alexandersen (568) | 94 | cubewano (cold) | 44.5 | 0.07 | 2 | 41.4 | 47.6 | — | MPC · JPL |
| 2011 UY412 | 24 October 2011 | Mauna Kea Obs. (568) | 78 | cubewano (hot)? | 43.1 | 0.03 | 8 | 41.7 | 44.4 | — | MPC · JPL |
| 2011 UZ410 | 26 October 2011 | M. Alexandersen (568) | 107 | plutino | 39.7 | 0.12 | 4 | 34.9 | 44.6 | — | MPC · JPL |
| 2011 UZ411 | 24 October 2011 | M. Alexandersen (568) | 94 | cubewano (cold) | 45.8 | 0.05 | 1 | 43.4 | 48.2 | — | MPC · JPL |
| 2011 UZ412 | 24 October 2011 | M. Alexandersen (568) | 50 | res · 3:4 | 36.7 | 0.14 | 7 | 31.6 | 41.8 | — | MPC · JPL |
| 2011 WS41 | 24 November 2011 | Pan-STARRS 1 (F51) | 1.9 | damocloid | 37.4 | 0.94 | 142 | 2.1 | 72.7 | — | MPC · JPL |
| 2011 WW188 | 25 November 2011 | Pan-STARRS 1 (F51) | 133 | SDO | 51.8 | 0.31 | 26 | 35.8 | 67.8 | — | MPC · JPL |
References
- ^ a b "List Of Transneptunian Objects". Minor Planet Center. 24 October 2025. Retrieved 24 October 2025.
- ^ a b "List Of Centaurs and Scattered-Disk Objects". Minor Planet Center. 24 October 2025. Retrieved 24 October 2025.
- ^ a b "List Of Other Unusual Objects". Minor Planet Center. 24 October 2025. Retrieved 24 October 2025.
- ^ a b "MPC Database Search: a ≥ 30.1 AU". Minor Planet Center. Archived from the original on 2 November 2025. Retrieved 2 November 2025.
5561 trans-Neptunian objects
- ^ a b "List of Known Trans-Neptunian Objects". Johnston's Archive. 24 June 2025. Retrieved 24 October 2025.