List of unnumbered trans-Neptunian objects: 1999

The following is a partial list of unnumbered trans-Neptunian objects for principal designations assigned within 1999. As of October 2020, it contains a total of 105 bodies.[1][2][3] 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
(AU)
e i
(°)
q
(AU)
Q
(AU)
1999 CA11910 February 1999D. C. Jewitt
C. Trujillo
J. X. Luu (568)
128cubewano (cold)45.20.00045.245.2MPC · JPL
1999 CA13211 February 1999J. X. Luu
C. Trujillo
D. C. Jewitt (568)
147cubewano (hot)44.00.101239.748.3MPC · JPL
1999 CB11910 February 1999J. X. Luu
D. C. Jewitt
C. Trujillo (568)
176cubewano (hot)47.10.13941.053.2BR-mag: 1.93; taxonomy: RRMPC · JPL
1999 CC11910 February 1999J. X. Luu
D. C. Jewitt
C. Trujillo (568)
161cubewano (cold)44.80.08041.348.3MPC · JPL
1999 CD11910 February 1999J. X. Luu
D. C. Jewitt
C. Trujillo (568)
154cubewano (cold)44.00.03242.845.2MPC · JPL
1999 CF11911 February 1999J. X. Luu
C. Trujillo
D. C. Jewitt (568)
161SDO88.00.562038.7137BR-mag: 1.46; taxonomy: BR-IRMPC · JPL
1999 CG15411 February 1999J. X. Luu
C. Trujillo
D. C. Jewitt (568)
147cubewano (cold)43.00.10138.947.1MPC · JPL
1999 CH11911 February 1999C. Trujillo
D. C. Jewitt
J. X. Luu (568)
168cubewano (hot)43.10.092039.446.9MPC · JPL
1999 CH15412 February 1999J. X. Luu
C. Trujillo
D. C. Jewitt (568)
122cubewano (cold)43.00.01142.643.4MPC · JPL
1999 CJ11911 February 1999C. Trujillo
D. C. Jewitt
J. X. Luu (568)
147cubewano (cold)45.10.06342.347.9BR-mag: 2.07MPC · JPL
1999 CK11911 February 1999C. Trujillo
D. C. Jewitt
J. X. Luu (568)
117cubewano (hot)42.10.001242.142.1MPC · JPL
1999 CK15810 February 1999D. C. Jewitt
J. X. Luu
C. Trujillo (568)
97other TNO40.70.071737.843.5MPC · JPL
1999 CL11911 February 1999J. X. Luu
C. Trujillo
D. C. Jewitt (568)
255cubewano (hot)46.70.012346.447.0BR-mag: 1.78MPC · JPL
1999 CM11911 February 1999J. X. Luu
C. Trujillo
D. C. Jewitt (568)
117cubewano (cold)43.90.09339.848.0BR-mag: 1.78MPC · JPL
1999 CM15311 February 1999C. Trujillo
J. X. Luu
D. C. Jewitt (568)
147cubewano (cold)45.70.14039.552.0MPC · JPL
1999 CM15811 February 1999C. Trujillo
D. C. Jewitt
J. X. Luu (568)
92plutino39.60.28928.550.7binary: 53 kmMPC · JPL
1999 CN11911 February 1999J. X. Luu
C. Trujillo
D. C. Jewitt (568)
106cubewano (cold)43.60.04141.745.5MPC · JPL
1999 CN15311 February 1999C. Trujillo
J. X. Luu
D. C. Jewitt (568)
128cubewano (hot)42.60.02841.943.3MPC · JPL
1999 CP15310 February 1999J. X. Luu
C. Trujillo
D. C. Jewitt (568)
128cubewano (cold)44.90.16337.852.1MPC · JPL
1999 CQ13312 February 1999C. Trujillo
J. X. Luu
D. C. Jewitt (568)
176cubewano (hot)41.10.101337.145.2BR-mag: 1.35MPC · JPL
1999 CQ15311 February 1999J. X. Luu
C. Trujillo
D. C. Jewitt (568)
111cubewano (cold)46.50.07043.549.5MPC · JPL
1999 CR13312 February 1999C. Trujillo
J. X. Luu
D. C. Jewitt (568)
106cubewano (cold)42.20.00242.242.2MPC · JPL
1999 CR15311 February 1999J. X. Luu
C. Trujillo
D. C. Jewitt (568)
101cubewano (cold)43.10.05140.945.3MPC · JPL
1999 CS15311 February 1999C. Trujillo
J. X. Luu
D. C. Jewitt (568)
106cubewano (cold)44.40.12138.949.9MPC · JPL
1999 CT15311 February 1999C. Trujillo
J. X. Luu
D. C. Jewitt (568)
106cubewano (cold)45.10.09540.949.3MPC · JPL
1999 CU15312 February 1999C. Trujillo
J. X. Luu
D. C. Jewitt (568)
161cubewano (cold)44.00.06341.346.7MPC · JPL
1999 CW11810 February 1999D. C. Jewitt
C. Trujillo
J. X. Luu (568)
122cubewano (cold)43.50.00143.543.5MPC · JPL
1999 CW13110 February 1999C. Trujillo
J. X. Luu
D. C. Jewitt (568)
117cubewano (hot)43.50.01843.243.9MPC · JPL
1999 CX11810 February 1999D. C. Jewitt
C. Trujillo
J. X. Luu (568)
168cubewano (cold)43.70.03242.544.9MPC · JPL
1999 CX13111 February 1999C. Trujillo
J. X. Luu
D. C. Jewitt (568)
168res · 3:542.10.241032.252.1BR-mag: 1.64; taxonomy: IRMPC · JPL
1999 CY11810 February 1999D. C. Jewitt
C. Trujillo
J. X. Luu (568)
81SDO90.60.622634.7146MPC · JPL
1999 CY13111 February 1999C. Trujillo
J. X. Luu
D. C. Jewitt (568)
106cubewano (hot)43.90.142538.049.9MPC · JPL
1999 CZ11810 February 1999D. C. Jewitt
C. Trujillo
J. X. Luu (568)
117SDO1190.692837.5201MPC · JPL
1999 CZ13111 February 1999J. X. Luu
C. Trujillo
D. C. Jewitt (568)
106cubewano (cold)44.40.03243.045.9MPC · JPL
1999 DA16 February 1999B. Gladman
J. J. Kavelaars
A. Morbidelli
M. J. Holman (568)
117cubewano (cold)43.30.07340.146.5MPC · JPL
1999 DA816 February 1999B. Gladman
J. J. Kavelaars
A. Morbidelli
M. J. Holman (568)
15plutino?39.30.334026.452.2MPC · JPL
1999 DB816 February 1999B. Gladman
J. J. Kavelaars
A. Morbidelli
M. J. Holman (568)
44cubewano (hot)42.50.102238.246.8MPC · JPL
1999 DC816 February 1999B. Gladman
J. J. Kavelaars
A. Morbidelli
M. J. Holman (568)
44cubewano (cold)45.90.00545.945.9MPC · JPL
1999 DD816 February 1999B. Gladman
J. J. Kavelaars
A. Morbidelli
M. J. Holman (568)
27plutino?39.40.23630.348.5MPC · JPL
1999 DE816 February 1999B. Gladman
J. J. Kavelaars
A. Morbidelli
M. J. Holman (568)
53cubewano (cold)45.60.00445.645.6MPC · JPL
1999 DF816 February 1999B. Gladman
J. J. Kavelaars
A. Morbidelli
M. J. Holman (568)
46cubewano (cold)44.20.00344.244.2MPC · JPL
1999 DG816 February 1999B. Gladman
J. J. Kavelaars
A. Morbidelli
M. J. Holman (568)
106SDO82.20.604033.0131MPC · JPL
1999 DH816 February 1999B. Gladman
J. J. Kavelaars
A. Morbidelli
M. J. Holman (568)
81cubewano (cold)44.10.08540.847.5MPC · JPL
1999 DL816 February 1999B. Gladman
J. J. Kavelaars
A. Morbidelli
M. J. Holman (568)
53cubewano (hot)42.50.00642.542.5MPC · JPL
1999 DM816 February 1999B. Gladman
J. J. Kavelaars
A. Morbidelli
M. J. Holman (568)
51cubewano (cold)42.90.00442.942.9MPC · JPL
1999 DN816 February 1999B. Gladman
J. J. Kavelaars
A. Morbidelli
M. J. Holman (568)
49cubewano (cold)44.30.00344.344.3MPC · JPL
1999 DO816 February 1999B. Gladman
J. J. Kavelaars
A. Morbidelli
M. J. Holman (568)
44cubewano (cold)41.80.00341.841.8MPC · JPL
1999 DP816 February 1999B. Gladman
J. J. Kavelaars
A. Morbidelli
M. J. Holman (568)
74SDO1160.703834.7197MPC · JPL
1999 DQ816 February 1999B. Gladman
J. J. Kavelaars
A. Morbidelli
M. J. Holman (568)
67cubewano (hot)45.30.001445.345.3MPC · JPL
1999 DR816 February 1999B. Gladman
J. J. Kavelaars
A. Morbidelli
M. J. Holman (568)
61cubewano (hot)45.50.11840.450.6MPC · JPL
1999 DZ716 February 1999B. Gladman
J. J. Kavelaars
A. Morbidelli
M. J. Holman (568)
77plutino?39.40.271428.949.9MPC · JPL
1999 GS4612 April 1999A. Delsanti
O. R. Hainaut (809)
185cubewano (hot)44.80.08541.248.5BR-mag: 1.76MPC · JPL
1999 HA1217 April 1999M. W. Buie
R. Millis (695)
122cubewano (cold)43.10.06440.645.7MPC · JPL
1999 HG1218 April 1999R. Millis
M. W. Buie (695)
161res · 4:744.00.16136.951.0BR-mag: 1.61; taxonomy: IR-RRMPC · JPL
1999 HH1218 April 1999R. Millis
M. W. Buie (695)
176cubewano (cold)43.90.02142.944.8MPC · JPL
1999 HJ1218 April 1999R. Millis
M. W. Buie (695)
147cubewano (cold)43.40.05541.345.5MPC · JPL
1999 HS1117 April 1999M. W. Buie
R. Millis (695)
185cubewano (cold)44.40.03343.345.6BR-mag: 1.76; taxonomy: RRMPC · JPL
1999 HV1118 April 1999M. W. Buie
R. Millis (695)
122cubewano (cold)43.20.02342.444.1BR-mag: 1.70MPC · JPL
1999 HY1117 April 1999M. W. Buie
R. Millis (695)
97cubewano (hot)42.20.06639.644.7MPC · JPL
1999 HZ1117 April 1999M. W. Buie
R. Millis (695)
93cubewano (hot)42.40.081039.045.7MPC · JPL
1999 JA13210 May 1999R. L. Allen
G. Bernstein
P. Guhathakurta (807)
128cubewano (hot)44.60.00744.544.6MPC · JPL
1999 JB13210 May 1999R. L. Allen
G. Bernstein
P. Guhathakurta (807)
101plutino?39.50.281328.750.4MPC · JPL
1999 JC13210 May 1999R. L. Allen
G. Bernstein
P. Guhathakurta (807)
81plutino?39.50.24629.949.2MPC · JPL
1999 JD13210 May 1999R. L. Allen
G. Bernstein
P. Guhathakurta (807)
128cubewano (hot)43.60.061140.846.4BR-mag: 1.59MPC · JPL
1999 JE13210 May 1999R. L. Allen
G. Bernstein
P. Guhathakurta (807)
84plutino?39.40.202531.847.1MPC · JPL
1999 JF13210 May 1999R. L. Allen
G. Bernstein
P. Guhathakurta (807)
117cubewano (cold)44.50.00244.544.5MPC · JPL
1999 JH13210 May 1999R. L. Allen
M. Jarvis
G. Bernstein (807)
53cubewano (cold)42.00.00142.042.0MPC · JPL
1999 JJ13210 May 1999R. L. Allen
M. Jarvis
G. Bernstein (807)
77cubewano (cold)45.80.10341.150.5MPC · JPL
1999 JK13210 May 1999R. L. Allen
M. Jarvis
G. Bernstein (807)
64plutino?39.30.171632.845.9MPC · JPL
1999 KK1718 May 1999R. L. Allen
M. Jarvis
G. Bernstein (807)
77cubewano (cold)45.50.00445.545.5MPC · JPL
1999 KL1718 May 1999R. L. Allen
P. Guhathakurta
G. Bernstein (807)
81cubewano (cold)46.20.03344.947.6MPC · JPL
1999 KR1818 May 1999R. L. Allen
G. Bernstein
P. Guhathakurta (807)
117res · 4:743.80.20134.852.7MPC · JPL
1999 KT1618 May 1999R. L. Allen
M. Jarvis
G. Bernstein (807)
77cubewano (hot)46.40.00946.446.4MPC · JPL
1999 LB378 June 1999Palomar Obs. (675)53plutino?39.50.191531.947.1MPC · JPL
1999 OA421 July 1999J. J. Kavelaars
B. Gladman
M. J. Holman
J.-M. Petit (568)
117cubewano (cold)44.50.07341.647.5MPC · JPL
1999 OC418 July 1999Mauna Kea Obs. (568)97cubewano (cold)45.70.17137.853.6MPC · JPL
1999 OD419 July 1999Mauna Kea Obs. (568)154cubewano (hot)41.70.091437.945.4MPC · JPL
1999 OG420 July 1999Mauna Kea Obs. (568)128twotino?47.20.14140.853.5MPC · JPL
1999 OH418 July 1999Mauna Kea Obs. (568)97other TNO40.60.042838.942.4BR-mag: 3.20MPC · JPL
1999 OJ418 July 1999Mauna Kea Obs. (568)75other TNO38.10.02437.239.0albedo: 0.225; BR-mag: 1.68; taxonomy: RR; binary: 72 kmMPC · JPL
1999 OK419 July 1999Mauna Kea Obs. (568)134cubewano (hot)43.40.163036.650.3MPC · JPL
1999 OZ321 July 1999J. J. Kavelaars
B. Gladman
M. J. Holman
J.-M. Petit (568)
147cubewano (cold)44.10.08340.647.6MPC · JPL
1999 RB2156 September 1999J. X. Luu
C. Trujillo
D. C. Jewitt (568)
58twotino47.40.34831.363.5MPC · JPL
1999 RC2156 September 1999J. X. Luu
C. Trujillo
D. C. Jewitt (568)
185cubewano (cold)44.10.06141.646.5MPC · JPL
1999 RC2168 September 1999D. C. Jewitt
J. X. Luu
C. Trujillo (568)
154cubewano (cold)44.40.08140.848.0MPC · JPL
1999 RF2157 September 1999J. X. Luu
D. C. Jewitt
C. Trujillo (568)
147cubewano (cold)44.00.00444.044.0MPC · JPL
1999 RG2157 September 1999J. X. Luu
D. C. Jewitt
C. Trujillo (568)
147cubewano (cold)46.40.07043.249.7MPC · JPL
1999 RJ2157 September 1999C. Trujillo
D. C. Jewitt
J. X. Luu (568)
147SDO59.50.422034.684.3BR-mag: 1.22MPC · JPL
1999 RK2157 September 1999D. C. Jewitt
J. X. Luu
C. Trujillo (568)
134plutino39.30.141233.744.9MPC · JPL
1999 RK25712 September 1999D. Milisavljevic
J. J. Kavelaars (568)
97cubewano (hot)43.20.051841.045.4MPC · JPL
1999 RR2157 September 1999D. C. Jewitt
C. Trujillo
J. X. Luu (568)
106cubewano (cold)44.00.10139.548.4MPC · JPL
1999 RS2146 September 1999D. C. Jewitt
J. X. Luu
C. Trujillo (568)
117cubewano (cold)43.00.00343.043.0MPC · JPL
1999 RT2146 September 1999C. Trujillo
J. X. Luu
D. C. Jewitt (568)
100cubewano (cold)42.60.05340.644.7albedo: 0.210; binary: 69 kmMPC · JPL
1999 RT2157 September 1999C. Trujillo
J. X. Luu
D. C. Jewitt (568)
168cubewano (hot)43.10.002243.143.1MPC · JPL
1999 RU2146 September 1999C. Trujillo
D. C. Jewitt
J. X. Luu (568)
154SDO56.00.34436.775.4MPC · JPL
1999 RV2146 September 1999J. X. Luu
D. C. Jewitt
C. Trujillo (568)
117cubewano (cold)46.50.05144.348.7MPC · JPL
1999 RV2157 September 1999J. X. Luu
D. C. Jewitt
C. Trujillo (568)
93cubewano (hot)44.40.182236.452.4MPC · JPL
1999 RW2146 September 1999J. X. Luu
C. Trujillo
D. C. Jewitt (568)
154cubewano (cold)42.90.04141.444.5MPC · JPL
1999 RW2157 September 1999J. X. Luu
D. C. Jewitt
C. Trujillo (568)
111res · 3:436.20.151130.641.7MPC · JPL
1999 RX2146 September 1999D. C. Jewitt
C. Trujillo
J. X. Luu (568)
193cubewano (cold)46.20.17538.154.3BR-mag: 1.63; taxonomy: IRMPC · JPL
1999 RX2158 September 1999D. C. Jewitt
C. Trujillo
J. X. Luu (568)
134cubewano (cold)47.20.15140.354.2MPC · JPL
1999 RZ2146 September 1999C. Trujillo
J. X. Luu
D. C. Jewitt (568)
122SDO85.30.572136.6134MPC · JPL
1999 SA2816 September 1999D. Milisavljevic
J. J. Kavelaars (568)
154plutino?39.20.181132.046.5MPC · JPL
1999 TR119 October 1999S. S. Sheppard (568)93plutino39.20.241729.748.7BR-mag: 1.77; taxonomy: RRMPC · JPL
1999 XY14314 December 1999C. W. Hergenrother (696)195cubewano (hot)42.80.09739.146.4binary: 164 kmMPC · JPL

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References

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