The following is a partial list of unnumbered trans-Neptunian objects for principal designations assigned within 1999. , it contains a total of 93 bodies. For more information see the description on the main page. Also see list for the previous and next year.

1999

Designation First Observed (discovered) D (km) Orbital description Remarks Refs Date Observer(Site) Class a e i q Q 10 February 1999 Maunakea () 98 cubewano (cold)? 45.2 0.00 0 45.2 45.2 albedo: 0.152 11 February 1999 Maunakea () 157 cubewano (hot)? 44.0 0.10 12 39.7 48.3 albedo: 0.079 10 February 1999 Maunakea () 177 cubewano (hot) 46.9 0.13 9 40.8 52.9 albedo: 0.079; BRmag: 1.93; taxonomy: RR 10 February 1999 Maunakea () 125 cubewano (cold) 44.7 0.07 1 41.5 47.9 albedo: 0.152 10 February 1999 Maunakea () 118 cubewano (cold)? 44.0 0.03 2 42.8 45.2 albedo: 0.152 11 February 1999 Maunakea () 113 cubewano (cold) 43.2 0.09 1 39.3 47.0 albedo: 0.152 11 February 1999 Maunakea () 170 cubewano (hot) 43.4 0.08 20 40.0 46.9 albedo: 0.079 12 February 1999 Maunakea () 100 cubewano (cold) 43.1 0.01 1 42.6 43.7 albedo: 0.152 11 February 1999 Maunakea () 112 cubewano (cold) 45.5 0.07 3 42.3 48.7 albedo: 0.152; BRmag: 2.07 11 February 1999 Maunakea () 124 cubewano (hot)? 42.1 0.00 12 42.1 42.1 albedo: 0.079 10 February 1999 Maunakea () 108 cubewano (hot)? 40.9 0.08 17 37.8 44.0 albedo: 0.079 11 February 1999 Maunakea () 90 cubewano (cold) 44.1 0.10 3 39.8 48.4 albedo: 0.152; BRmag: 1.78 11 February 1999 Maunakea () 114 cubewano (cold) 45.7 0.14 0 39.3 52.2 albedo: 0.152 11 February 1999 Maunakea () 82 cubewano (cold) 43.8 0.04 1 42.2 45.5 albedo: 0.152 11 February 1999 Maunakea () 121 cubewano (hot) 43.9 0.12 7 38.8 49.0 albedo: 0.079 10 February 1999 Maunakea () 98 cubewano (cold)? 45.2 0.16 3 38.1 52.4 albedo: 0.152 12 February 1999 Maunakea () 196 cubewano (hot) 41.4 0.09 13 37.6 45.3 albedo: 0.079; BRmag: 1.35 11 February 1999 Maunakea () 75 cubewano (cold) 46.4 0.06 0 43.5 49.2 albedo: 0.152 12 February 1999 Maunakea () 82 cubewano (cold)? 42.3 0.00 2 42.3 42.3 albedo: 0.152 11 February 1999 Maunakea () 78 cubewano (cold)? 43.1 0.05 1 40.9 45.3 albedo: 0.152 11 February 1999 Maunakea () 82 cubewano (cold)? 44.6 0.12 1 39.1 50.1 albedo: 0.152 11 February 1999 Maunakea () 74 cubewano (cold)? 44.9 0.10 5 40.4 49.4 albedo: 0.152 10 February 1999 Maunakea () 94 cubewano (cold)? 43.5 0.00 1 43.5 43.5 albedo: 0.152 10 February 1999 Maunakea () 124 cubewano (hot)? 43.3 0.01 8 42.7 43.8 albedo: 0.079 10 February 1999 Maunakea () 130 cubewano (cold)? 43.7 0.03 2 42.5 44.9 albedo: 0.152 10 February 1999 Maunakea () 70 SDO 89.9 0.62 26 34.6 145.3 albedo: 0.124 11 February 1999 Maunakea () 113 cubewano (hot)? 43.9 0.14 25 38.0 49.9 albedo: 0.079 10 February 1999 Maunakea () 99 SDO 116.1 0.68 28 37.5 194.6 albedo: 0.124 11 February 1999 Maunakea () 90 cubewano (cold)? 43.3 0.04 2 41.4 45.2 albedo: 0.152 16 February 1999 Maunakea () 97 cubewano (cold) 43.3 0.07 3 40.4 46.3 albedo: 0.152 16 February 1999 Maunakea () 46 cubewano (hot)? 50.6 0.26 20 37.4 63.7 albedo: 0.079 16 February 1999 Maunakea () 48 cubewano (hot)? 43.4 0.10 5 39.1 47.6 albedo: 0.079 16 February 1999 Maunakea () 23 other TNO 38.2 0.11 6 34.0 42.4 albedo: 0.13 16 February 1999 Maunakea () 40 cubewano (cold)? 50.6 0.11 3 45.1 56.1 albedo: 0.152 16 February 1999 Maunakea () 37 cubewano (cold)? 40.9 0.09 3 37.1 44.8 albedo: 0.152 16 February 1999 Maunakea () 86 SDO 61.5 0.10 35 55.2 67.8 albedo: 0.124 16 February 1999 Maunakea () 62 cubewano (cold) 44.2 0.07 5 40.9 47.4 albedo: 0.152 16 February 1999 Maunakea () 109 cubewano (hot)? 74.7 0.22 175 58.1 91.4 albedo: 0.079 16 February 1999 Maunakea () 39 cubewano (cold)? 45.6 0.11 4 40.8 50.4 albedo: 0.152 16 February 1999 Maunakea () 39 cubewano (cold)? 40.9 0.10 3 37.0 44.8 albedo: 0.152 16 February 1999 Maunakea () 34 cubewano (cold)? 42.5 0.11 4 37.8 47.3 albedo: 0.152 16 February 1999 Maunakea () 71 SDO 59.0 0.11 39 52.7 65.2 albedo: 0.124 16 February 1999 Maunakea () 72 cubewano (hot)? 41.9 0.09 15 37.9 45.8 albedo: 0.079 16 February 1999 Maunakea () 66 cubewano (hot)? 47.8 0.10 8 43.3 52.4 albedo: 0.079 16 February 1999 Maunakea () 85 plutino? 39.4 0.27 14 28.9 49.9 albedo: 0.074 12 April 1999 European Southern Observatory, La Silla () 197 cubewano (hot) 44.4 0.09 5 40.5 48.3 albedo: 0.079; BRmag: 1.76 17 April 1999 Kitt Peak () 94 cubewano (cold)? 43.1 0.06 4 40.6 45.7 albedo: 0.152 18 April 1999 Kitt Peak () 136 res4:7 43.4 0.15 1 36.8 50.0 albedo: 0.126; BRmag: 1.61; taxonomy: IR-RR 18 April 1999 Kitt Peak () 137 cubewano (cold) 43.4 0.02 1 42.5 44.2 albedo: 0.152 18 April 1999 Kitt Peak () 113 cubewano (cold) 42.9 0.05 5 40.8 44.9 albedo: 0.152 17 April 1999 Kitt Peak () 142 cubewano (cold) 43.9 0.02 3 43.3 44.6 albedo: 0.152; BRmag: 1.86; taxonomy: RR 17 April 1999 Kitt Peak () 103 cubewano (hot)? 42.2 0.06 6 39.6 44.7 albedo: 0.079 17 April 1999 Kitt Peak () 99 cubewano (hot)? 42.4 0.08 10 39.0 45.7 albedo: 0.079 10 May 1999 Cerro Tololo Observatory, La Serena () 136 cubewano (hot)? 44.6 0.00 7 44.5 44.6 albedo: 0.079 10 May 1999 Cerro Tololo Observatory, La Serena () 110 other TNO 38.2 0.10 13 34.5 41.9 albedo: 0.13 10 May 1999 Cerro Tololo Observatory, La Serena () 65 other TNO 41.4 0.11 5 37.0 45.8 albedo: 0.13 10 May 1999 Cerro Tololo Observatory, La Serena () 136 cubewano (hot) 43.1 0.07 11 40.1 46.1 albedo: 0.079; BRmag: 1.59 10 May 1999 Cerro Tololo Observatory, La Serena () 68 other TNO 40.7 0.10 24 36.7 44.8 albedo: 0.13 10 May 1999 Cerro Tololo Observatory, La Serena () 90 cubewano (cold)? 42.6 0.10 2 38.1 47.0 albedo: 0.152 10 May 1999 Cerro Tololo Observatory, La Serena () 52 cubewano (cold)? 45.5 0.11 1 40.7 50.2 albedo: 0.152 10 May 1999 Cerro Tololo Observatory, La Serena () 57 cubewano (cold)? 55.1 0.10 3 49.4 60.8 albedo: 0.152 10 May 1999 Cerro Tololo Observatory, La Serena () 68 other TNO 35.8 0.10 17 32.3 39.3 albedo: 0.13 18 May 1999 Cerro Tololo Observatory, La Serena () 77 cubewano (cold)? 46.0 0.14 4 39.5 52.5 albedo: 0.152 18 May 1999 Cerro Tololo Observatory, La Serena () 62 cubewano (cold)? 46.2 0.03 3 44.9 47.6 albedo: 0.152 18 May 1999 Cerro Tololo Observatory, La Serena () 98 res4:7 43.6 0.21 1 34.4 52.7 albedo: 0.126 18 May 1999 Cerro Tololo Observatory, La Serena () 75 cubewano (hot)? 97.1 0.55 6 43.8 150.3 albedo: 0.079 8 June 1999 Palomar Mountain () 59 plutino? 39.5 0.19 15 31.9 47.1 albedo: 0.074 21 July 1999 Maunakea () 90 cubewano (cold) 44.4 0.07 3 41.5 47.3 albedo: 0.152 18 July 1999 Maunakea () 75 cubewano (cold) 45.5 0.17 1 37.9 53.1 albedo: 0.152 19 July 1999 Maunakea () 171 cubewano (hot) 41.4 0.10 14 37.4 45.4 albedo: 0.079 20 July 1999 Maunakea () 98 cubewano (cold) 46.9 0.13 1 40.8 53.1 albedo: 0.152 18 July 1999 Maunakea () 103 cubewano (hot)? 40.5 0.04 28 39.0 42.0 albedo: 0.079; BRmag: 3.20 19 July 1999 Maunakea () 145 cubewano (hot)? 43.2 0.16 30 36.3 50.0 albedo: 0.079 21 July 1999 Maunakea () 121 cubewano (cold) 44.0 0.08 3 40.3 47.6 albedo: 0.152 6 September 1999 Maunakea () 49 twotino 48.0 0.34 8 31.5 64.4 albedo: 0.126 8 September 1999 Maunakea () 118 cubewano (cold)? 44.4 0.08 1 40.8 48.0 albedo: 0.152 7 September 1999 Maunakea () 113 cubewano (cold)? 44.0 0.00 4 44.0 44.0 albedo: 0.152 7 September 1999 Maunakea () 118 cubewano (cold) 46.5 0.08 0 43.1 50.0 albedo: 0.152 12 September 1999 Maunakea () 103 cubewano (hot)? 43.2 0.05 18 41.0 45.4 albedo: 0.079 7 September 1999 Maunakea () 82 cubewano (cold) 44.4 0.10 1 39.9 48.8 albedo: 0.152 6 September 1999 Maunakea () 90 cubewano (cold)? 43.0 0.00 3 43.0 43.0 albedo: 0.152 6 September 1999 Maunakea () 65 cubewano (cold) 42.6 0.05 3 40.6 44.6 binary: 45 km, possible triple; albedo: 0.21 7 September 1999 Maunakea () 180 cubewano (hot)? 43.1 0.00 22 43.1 43.1 albedo: 0.079 6 September 1999 Maunakea () 151 res2:5 55.6 0.34 4 36.8 74.4 albedo: 0.126 6 September 1999 Maunakea () 90 cubewano (cold) 46.4 0.05 1 43.9 48.9 albedo: 0.152 7 September 1999 Maunakea () 99 cubewano (hot)? 45.0 0.19 22 36.5 53.4 albedo: 0.079 6 September 1999 Maunakea () 118 cubewano (cold) 43.1 0.03 1 41.9 44.3 albedo: 0.152 7 September 1999 Maunakea () 96 res3:4 36.6 0.16 11 30.7 42.6 albedo: 0.126 6 September 1999 Maunakea () 150 cubewano (cold) 46.3 0.17 5 38.5 54.0 albedo: 0.152; BRmag: 1.65; taxonomy: IR 8 September 1999 Maunakea () 111 cubewano (cold) 47.0 0.14 1 40.4 53.5 albedo: 0.152 6 September 1999 Maunakea () 104 SDO 85.4 0.57 21 36.8 134.0 albedo: 0.124 16 September 1999 Maunakea () 169 plutino? 39.2 0.19 11 32.0 46.5 albedo: 0.074 9 October 1999 Maunakea () 101 plutino 39.7 0.25 17 29.8 49.7 albedo: 0.074; BRmag: 1.77; taxonomy: RR

References