The following is a partial list of unnumbered trans-Neptunian objects for principal designations assigned within 2012. , it contains a total of 43 bodies. For more information see the description on the main page. Also see list for the previous and next year.

2012

Designation First Observed (discovered) D (km) Orbital description Remarks Refs Date Observer(Site) Class a e i q Q 19 January 2012 Pan-STARRS 1 () 197 cubewano (hot)? 46.9 0.20 12 37.6 56.3 albedo: 0.079 21 January 2012 Pan-STARRS 1 () 156 res3:5 42.3 0.17 7 35.2 49.5 albedo: 0.126 16 February 2012 Pan-STARRS 1 () 134 res4:7? 43.8 0.17 1 36.4 51.2 albedo: 0.126 16 February 2012 Pan-STARRS 1 () 148 SDO 64.2 0.44 33 36.1 92.4 albedo: 0.124 16 February 2012 Pan-STARRS 1 () 149 cubewano (cold) 42.7 0.02 3 41.8 43.6 albedo: 0.152 25 March 2012 Las Campanas Observatory () 140 SDO 58.0 0.31 4 40.3 75.7 albedo: 0.124 25 March 2012 Las Campanas Observatory () 104 SDO 52.6 0.35 8 34.0 71.1 albedo: 0.124 12 April 2012 Pan-STARRS 1 () 87 centaur 174.1 0.90 11 18.2 330.0 albedo: 0.058 14 April 2012 Pan-STARRS 1 () 167 centaur 37.5 0.55 33 16.8 58.2 albedo: 0.058 18 April 2012 Spacewatch () 5 damocloid 61.0 0.96 147 2.5 119.4 albedo: 0.048 18 April 2012 New Horizons KBO Search () 62 res5:9 44.3 0.09 3 40.2 48.5 albedo: 0.126 21 April 2012 Pan-STARRS 1 () 114 SDO 90.7 0.64 14 32.4 149.0 albedo: 0.124 22 July 2012 Maunakea () 137 SDO 54.1 0.30 9 37.8 70.5 albedo: 0.124 26 September 2012 Pan-STARRS 1 () 246 cubewano (hot)? 47.3 0.14 18 40.5 54.0 albedo: 0.079 8 October 2012 Pan-STARRS 1 () 232 cubewano (hot) 46.4 0.13 6 40.6 52.3 albedo: 0.079 9 October 2012 Pan-STARRS 1 () 227 cubewano (hot) 43.6 0.12 8 38.6 48.7 albedo: 0.079 6 October 2012 Pan-STARRS 1 () 263 cubewano (hot)? 42.3 0.07 25 39.4 45.3 albedo: 0.079 21 October 2012 Pan-STARRS 1 () 122 res2:5 55.9 0.42 9 32.2 79.5 albedo: 0.126 23 October 2012 Pan-STARRS 1 () 246 cubewano (hot)? 42.1 0.16 21 35.6 48.6 albedo: 0.079 20 October 2012 M. Alexandersen () 59 plutino 39.6 0.23 22 30.5 48.7 albedo: 0.074 21 October 2012 M. Alexandersen () 124 plutino 39.5 0.19 24 32.2 46.9 albedo: 0.074 21 October 2012 M. Alexandersen () 57 res2:5 55.7 0.44 16 31.4 79.9 albedo: 0.126 20 October 2012 M. Alexandersen () 69 SDO 94.0 0.62 25 35.4 152.7 albedo: 0.124 20 October 2012 M. Alexandersen () 152 cubewano (hot)? 40.9 0.12 19 35.9 46.0 albedo: 0.079 20 October 2012 M. Alexandersen () 90 cubewano (hot)? 43.8 0.06 16 41.2 46.4 albedo: 0.079 20 October 2012 M. Alexandersen () 146 cubewano (hot)? 43.5 0.17 20 36.3 50.7 albedo: 0.079 21 October 2012 M. Alexandersen () 103 cubewano (hot)? 41.8 0.03 16 40.6 43.0 albedo: 0.079 21 October 2012 M. Alexandersen () 113 cubewano (hot)? 43.1 0.10 17 38.7 47.5 albedo: 0.079 20 October 2012 M. Alexandersen () 91 SDO 52.5 0.32 20 35.8 69.2 albedo: 0.124 21 October 2012 M. Alexandersen () 99 SDO 74.9 0.50 16 37.5 112.2 albedo: 0.124 21 October 2012 M. Alexandersen () 69 SDO 56.6 0.37 17 35.6 77.5 albedo: 0.124 21 October 2012 Maunakea () 143 cubewano (hot)? 47.7 0.12 16 41.9 53.5 albedo: 0.079 21 October 2012 Maunakea () 99 cubewano (hot)? 43.8 0.04 16 42.3 45.3 albedo: 0.079 20 October 2012 Maunakea () 77 nep trj 30.2 0.08 21 27.9 32.5 albedo: 0.058 8 November 2012 Pan-STARRS 1 () 437 cubewano (hot)? 47.4 0.16 23 39.8 55.0 albedo: 0.079 5 November 2012 Cerro Tololo Observatory, La Serena () 585 sednoid 269.7 0.70 24 80.6 458.7 albedo: 0.124; BRmag: 1.44 16 November 2012 Cerro Tololo-DECam () 103 twotino 48.0 0.25 26 36.0 60.1 albedo: 0.126 16 November 2012 Cerro Tololo-DECam () 110 plutino 39.8 0.30 19 28.0 51.6 albedo: 0.074; taxonomy: RR 19 November 2012 Cerro Tololo-DECam () 181 SDO 49.4 0.35 14 32.3 66.5 albedo: 0.124 9 December 2012 Pan-STARRS 1 () 162 plutino 39.8 0.21 21 31.3 48.4 albedo: 0.074 23 December 2012 Pan-STARRS 1 () 294 cubewano (hot)? 43.9 0.14 28 37.6 50.1 albedo: 0.079 30 December 2012 Pan-STARRS 1 () 194 plutino 39.7 0.22 31 31.0 48.4 albedo: 0.074 17 December 2012 Dark Energy Survey () 109 res4:7 44.0 0.17 15 36.4 51.6 albedo: 0.126

References