The following is a partial list of unnumbered trans-Neptunian objects for principal designations assigned within 2018. , it contains a total of 42 bodies. For more information see the description on the main page. Also see list for the previous and next year.

2018

Designation First Observed (discovered) D (km) Orbital description Remarks Refs Date Observer(Site) Class a e i q Q 15 January 2018 Maunakea () 217 SDO 169.7 0.77 20 38.9 300.6 albedo: 0.124 15 January 2018 Maunakea () 790 centaur 81.4 0.65 19 28.4 134.4 albedo: 0.058 15 January 2018 Maunakea () 133 other TNO 55.6 0.18 29 45.7 65.5 albedo: 0.13 15 January 2018 Maunakea () 277 centaur 51.7 0.46 15 28.0 75.4 albedo: 0.058 15 January 2018 Maunakea () 181 SDO 52.6 0.28 21 37.7 67.5 albedo: 0.124 15 January 2018 Maunakea () 125 SDO 65.4 0.38 15 40.4 90.5 albedo: 0.124 15 January 2018 Maunakea () 109 SDO 55.3 0.27 16 40.4 70.1 albedo: 0.124 17 February 2018 Mt. Lemmon Survey () 2.2 damocloid 31.4 0.92 82 2.4 60.4 albedo: 0.048 23 February 2018 Mt. Lemmon Survey () 3 damocloid 92.1 0.98 68 1.6 182.6 albedo: 0.048 18 March 2018 COIAS,Subaru Telescope () 103 twotino 47.8 0.15 2 40.6 54.9 albedo: 0.126 18 March 2018 COIAS,Subaru Telescope () 138 cubewano (cold)? 44.9 0.12 4 39.4 50.5 albedo: 0.152 18 March 2018 COIAS,Subaru Telescope () 105 plutino 39.5 0.09 14 36.0 43.0 albedo: 0.074 18 March 2018 COIAS,Subaru Telescope () 95 cubewano (cold)? 45.3 0.10 3 40.8 49.8 albedo: 0.152 18 March 2018 COIAS,Subaru Telescope () 130 cubewano (hot)? 42.4 0.11 5 37.9 46.9 albedo: 0.079 18 March 2018 COIAS,Subaru Telescope () 172 cubewano (hot)? 42.0 0.13 29 36.6 47.5 albedo: 0.079 18 March 2018 COIAS,Subaru Telescope () 97 cubewano (cold)? 42.5 0.03 4 41.4 43.6 albedo: 0.152 18 March 2018 COIAS,Subaru Telescope () 75 cubewano (cold)? 42.8 0.02 2 41.8 43.8 albedo: 0.152 18 March 2018 COIAS,Subaru Telescope () 131 cubewano (cold)? 44.0 0.06 3 41.2 46.8 albedo: 0.152 18 March 2018 COIAS,Subaru Telescope () 108 res3:5 42.4 0.18 4 35.0 49.8 albedo: 0.126 12 April 2018 Cerro Tololo Observatory, La Serena () 114 SDO 96.9 0.65 16 33.7 160.2 albedo: 0.124 12 April 2018 Cerro Tololo Observatory, La Serena () 112 other TNO 56.9 0.10 26 51.4 62.4 albedo: 0.13 24 April 2018 COIAS,Subaru Telescope () 115 cubewano (cold)? 43.1 0.05 2 41.2 45.1 albedo: 0.152 24 April 2018 COIAS,Subaru Telescope () 102 cubewano (cold)? 43.5 0.05 3 41.5 45.5 albedo: 0.152 24 April 2018 COIAS,Subaru Telescope () 102 cubewano (cold)? 44.2 0.05 2 41.8 46.6 albedo: 0.152 24 April 2018 COIAS,Subaru Telescope () 82 res3:5 42.2 0.19 15 34.2 50.1 albedo: 0.126 24 April 2018 COIAS,Subaru Telescope () 105 other TNO 38.3 0.10 2 34.4 42.2 albedo: 0.13 10 May 2018 Cerro Tololo Observatory, La Serena () 161 other TNO 53.1 0.20 27 42.8 63.5 albedo: 0.13 11 May 2018 Cerro Tololo Observatory, La Serena () 157 SDO 51.4 0.25 6 38.4 64.5 albedo: 0.124 16 May 2018 Mt. Lemmon Survey () 11 damocloid 89.6 0.96 47 3.7 175.5 albedo: 0.048 16 June 2018 DECam () 68 res5:8 41.0 0.25 3 30.7 51.3 albedo: 0.126 16 June 2018 DECam () 146 cubewano (hot)? 47.6 0.07 10 44.4 50.9 albedo: 0.079 16 June 2018 Pan-STARRS 1 () 5 damocloid 335.4 0.99 68 3.8 667.0 albedo: 0.048 21 September 2018 Mt. Lemmon Survey () 5 damocloid 162.1 0.98 91 3.0 321.3 albedo: 0.048 10 November 2018 Maunakea () 610 res2:9 82.0 0.53 24 39.0 125.1 albedo: 0.126 8 November 2018 Maunakea () 165 SDO 92.1 0.59 19 37.6 146.6 albedo: 0.124 8 November 2018 COIAS,Subaru Telescope () 90 centaur 43.6 0.87 19 5.6 81.7 albedo: 0.058 6 November 2018 Maunakea () 106 EDDO 306.8 0.86 9 44.6 568.9 albedo: 0.124 8 November 2018 Maunakea () 120 SDO 55.3 0.38 17 34.2 76.4 albedo: 0.124 10 November 2018 Maunakea () 111 SDO 85.3 0.60 25 34.6 136.0 albedo: 0.124 8 November 2018 Maunakea () 129 res2:5 55.6 0.19 39 45.3 66.0 albedo: 0.126 10 November 2018 Maunakea () 162 SDO 95.9 0.63 19 35.5 156.3 albedo: 0.124 8 November 2018 Maunakea () 109 SDO 55.7 0.39 9 34.2 77.2 albedo: 0.124

References