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 April 2022, it contains a total of 94 bodies.[1][2][3] For more information see the description on the main page. Also see list for the previous and next year.

1999

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Designation First Observed (discovered) D (km) Orbital description Remarks Refs
Date Observer
(Site)
Class a
(AU)
e i
(°)
q
(AU)
Q
(AU)
1999 CA119 10 February 1999 Mauna Kea Obs. (568) 99 cubewano? 45.2 0.00 0 45.2 45.2 MPC · JPL
1999 CA132 11 February 1999 Mauna Kea Obs. (568) 114 cubewano? 44.0 0.10 12 39.7 48.3 MPC · JPL
1999 CB119 10 February 1999 J. X. Luu
D. C. Jewitt
C. Trujillo (568)
204 cubewano (hot) 46.7 0.12 9 40.9 52.5 BR-mag: 1.93; taxonomy: RR MPC · JPL
1999 CC119 10 February 1999 J. X. Luu
D. C. Jewitt
C. Trujillo (568)
121 cubewano (cold) 44.6 0.07 1 41.3 47.9 MPC · JPL
1999 CD119 10 February 1999 Mauna Kea Obs. (568) 119 cubewano? 44.0 0.03 2 42.8 45.2 MPC · JPL
1999 CG154 11 February 1999 J. X. Luu
C. Trujillo
D. C. Jewitt (568)
110 cubewano (cold) 42.8 0.10 1 38.7 46.9 MPC · JPL
1999 CH119 11 February 1999 C. Trujillo
D. C. Jewitt
J. X. Luu (568)
158 other TNO 43.1 0.09 20 39.3 46.8 MPC · JPL
1999 CH154 12 February 1999 J. X. Luu
C. Trujillo
D. C. Jewitt (568)
98 cubewano (cold) 42.8 0.01 1 42.1 43.4 MPC · JPL
1999 CJ119 11 February 1999 C. Trujillo
D. C. Jewitt
J. X. Luu (568)
110 cubewano (cold) 45.0 0.06 3 42.3 47.8 BR-mag: 2.07 MPC · JPL
1999 CK119 11 February 1999 Mauna Kea Obs. (568) 90 cubewano? 42.1 0.00 12 42.1 42.1 MPC · JPL
1999 CK158 10 February 1999 D. C. Jewitt
J. X. Luu
C. Trujillo (568)
91 other TNO 40.6 0.07 17 37.7 43.5 MPC · JPL
1999 CM119 11 February 1999 J. X. Luu
C. Trujillo
D. C. Jewitt (568)
87 cubewano (cold) 43.7 0.10 3 39.5 47.9 BR-mag: 1.78 MPC · JPL
1999 CM153 11 February 1999 C. Trujillo
J. X. Luu
D. C. Jewitt (568)
110 cubewano (cold) 45.4 0.14 0 39.2 51.6 MPC · JPL
1999 CN119 11 February 1999 J. X. Luu
C. Trujillo
D. C. Jewitt (568)
80 cubewano (cold) 43.5 0.04 1 41.7 45.3 MPC · JPL
1999 CN153 11 February 1999 C. Trujillo
J. X. Luu
D. C. Jewitt (568)
148 cubewano (hot) 43.6 0.11 7 38.6 48.6 MPC · JPL
1999 CP153 10 February 1999 J. X. Luu
C. Trujillo
D. C. Jewitt (568)
99 cubewano? 44.8 0.16 3 37.4 52.2 MPC · JPL
1999 CQ133 12 February 1999 C. Trujillo
J. X. Luu
D. C. Jewitt (568)
213 cubewano (hot) 41.1 0.10 13 37.1 45.1 BR-mag: 1.35 MPC · JPL
1999 CQ153 11 February 1999 J. X. Luu
C. Trujillo
D. C. Jewitt (568)
83 cubewano (cold) 46.1 0.06 0 43.5 48.7 MPC · JPL
1999 CR133 12 February 1999 Mauna Kea Obs. (568) 82 cubewano? 42.2 0.00 2 42.2 42.2 MPC · JPL
1999 CR153 11 February 1999 Mauna Kea Obs. (568) 79 cubewano? 43.1 0.05 1 40.9 45.3 MPC · JPL
1999 CS153 11 February 1999 C. Trujillo
J. X. Luu
D. C. Jewitt (568)
82 cubewano? 44.2 0.12 1 39.0 49.4 MPC · JPL
1999 CT153 11 February 1999 Mauna Kea Obs. (568) 82 cubewano? 45.1 0.09 5 40.9 49.3 MPC · JPL
1999 CW118 10 February 1999 Mauna Kea Obs. (568) 95 cubewano? 43.5 0.00 1 43.5 43.5 MPC · JPL
1999 CW131 10 February 1999 C. Trujillo
J. X. Luu
D. C. Jewitt (568)
90 cubewano? 43.2 0.01 8 42.5 43.9 MPC · JPL
1999 CX118 10 February 1999 Mauna Kea Obs. (568) 130 cubewano? 43.7 0.03 2 42.5 44.9 MPC · JPL
1999 CY118 10 February 1999 D. C. Jewitt
C. Trujillo
J. X. Luu (568)
70 SDO 89.4 0.61 26 34.6 144 MPC · JPL
1999 CY131 11 February 1999 Mauna Kea Obs. (568) 100 other TNO 43.9 0.14 25 38.0 49.9 MPC · JPL
1999 CZ118 10 February 1999 D. C. Jewitt
C. Trujillo
J. X. Luu (568)
99 SDO 116 0.68 28 37.5 194 MPC · JPL
1999 CZ131 11 February 1999 Mauna Kea Obs. (568) 82 cubewano? 44.4 0.03 2 43.0 45.9 MPC · JPL
1999 DA 16 February 1999 B. Gladman
J. J. Kavelaars
A. Morbidelli
M. J. Holman (568)
87 cubewano (cold) 43.0 0.08 3 39.8 46.3 MPC · JPL
1999 DA8 16 February 1999 Mauna Kea Obs. (568) 16 plutino? 39.3 0.33 40 26.4 52.2 MPC · JPL
1999 DB8 16 February 1999 Mauna Kea Obs. (568) 42 other TNO 42.5 0.10 22 38.2 46.8 MPC · JPL
1999 DC8 16 February 1999 Mauna Kea Obs. (568) 34 cubewano? 45.9 0.00 5 45.9 45.9 MPC · JPL
1999 DD8 16 February 1999 Mauna Kea Obs. (568) 28 plutino? 39.4 0.23 6 30.3 48.5 MPC · JPL
1999 DE8 16 February 1999 Mauna Kea Obs. (568) 41 cubewano? 45.6 0.00 4 45.6 45.6 MPC · JPL
1999 DF8 16 February 1999 Mauna Kea Obs. (568) 36 cubewano? 44.2 0.00 3 44.2 44.2 MPC · JPL
1999 DG8 16 February 1999 Mauna Kea Obs. (568) 91 SDO 82.2 0.60 40 33.0 131 MPC · JPL
1999 DH8 16 February 1999 B. Gladman
J. J. Kavelaars
A. Morbidelli
M. J. Holman (568)
60 cubewano (cold) 43.8 0.07 5 40.8 46.9 MPC · JPL
1999 DL8 16 February 1999 Mauna Kea Obs. (568) 62 cubewano (hot) 42.5 0.00 6 42.5 42.5 MPC · JPL
1999 DM8 16 February 1999 Mauna Kea Obs. (568) 39 cubewano? 42.9 0.00 4 42.9 42.9 MPC · JPL
1999 DN8 16 February 1999 Mauna Kea Obs. (568) 38 cubewano? 44.3 0.00 3 44.3 44.3 MPC · JPL
1999 DO8 16 February 1999 Mauna Kea Obs. (568) 34 cubewano? 41.8 0.00 3 41.8 41.8 MPC · JPL
1999 DP8 16 February 1999 Mauna Kea Obs. (568) 63 SDO 116 0.70 38 34.7 197 MPC · JPL
1999 DQ8 16 February 1999 Mauna Kea Obs. (568) 52 cubewano? 45.3 0.00 14 45.3 45.3 MPC · JPL
1999 DR8 16 February 1999 Mauna Kea Obs. (568) 47 cubewano? 45.5 0.11 8 40.4 50.6 MPC · JPL
1999 DZ7 16 February 1999 Mauna Kea Obs. (568) 82 plutino? 39.4 0.27 14 28.9 49.9 MPC · JPL
1999 GS46 12 April 1999 A. Delsanti
O. R. Hainaut (809)
214 cubewano (hot) 44.5 0.08 5 40.9 48.2 BR-mag: 1.76 MPC · JPL
1999 HA12 17 April 1999 Kitt Peak Obs. (695) 95 cubewano? 43.1 0.06 4 40.6 45.7 MPC · JPL
1999 HG12 18 April 1999 R. Millis
M. W. Buie (695)
131 res · 4:7 43.6 0.16 1 36.7 50.5 BR-mag: 1.61; taxonomy: IR-RR MPC · JPL
1999 HH12 18 April 1999 R. Millis
M. W. Buie (695)
132 cubewano (cold) 43.5 0.02 1 42.5 44.5 MPC · JPL
1999 HJ12 18 April 1999 R. Millis
M. W. Buie (695)
110 cubewano (cold) 43.1 0.05 5 40.9 45.4 MPC · JPL
1999 HS11 17 April 1999 M. W. Buie
R. Millis (695)
139 cubewano (cold) 44.1 0.02 3 43.2 45.0 BR-mag: 1.76; taxonomy: RR MPC · JPL
1999 HY11 17 April 1999 Kitt Peak Obs. (695) 75 cubewano? 42.2 0.06 6 39.6 44.7 MPC · JPL
1999 HZ11 17 April 1999 Kitt Peak Obs. (695) 72 cubewano? 42.4 0.08 10 39.0 45.7 MPC · JPL
1999 JA132 10 May 1999 Cerro Tololo Obs. (807) 99 cubewano? 44.6 0.00 7 44.5 44.6 MPC · JPL
1999 JB132 10 May 1999 Cerro Tololo Obs. (807) 108 plutino? 39.5 0.28 13 28.7 50.4 MPC · JPL
1999 JC132 10 May 1999 Cerro Tololo Obs. (807) 86 plutino? 39.5 0.24 6 29.9 49.2 MPC · JPL
1999 JD132 10 May 1999 R. L. Allen
G. Bernstein
P. Guhathakurta (807)
148 cubewano (hot) 43.3 0.06 11 40.5 46.0 BR-mag: 1.59 MPC · JPL
1999 JE132 10 May 1999 Cerro Tololo Obs. (807) 90 plutino? 39.4 0.20 25 31.8 47.1 MPC · JPL
1999 JF132 10 May 1999 Cerro Tololo Obs. (807) 90 cubewano? 44.5 0.00 2 44.5 44.5 MPC · JPL
1999 JH132 10 May 1999 Cerro Tololo Obs. (807) 41 cubewano? 42.0 0.00 1 42.0 42.0 MPC · JPL
1999 JJ132 10 May 1999 Cerro Tololo Obs. (807) 60 cubewano? 45.8 0.10 3 41.1 50.5 MPC · JPL
1999 JK132 10 May 1999 Cerro Tololo Obs. (807) 68 plutino? 39.3 0.17 16 32.8 45.9 MPC · JPL
1999 KK17 18 May 1999 Cerro Tololo Obs. (807) 60 cubewano? 45.5 0.00 4 45.5 45.5 MPC · JPL
1999 KL17 18 May 1999 Cerro Tololo Obs. (807) 62 cubewano? 46.2 0.03 3 44.9 47.6 MPC · JPL
1999 KR18 18 May 1999 R. L. Allen
G. Bernstein
P. Guhathakurta (807)
95 res · 4:7 43.9 0.20 1 35.1 52.7 MPC · JPL
1999 KT16 18 May 1999 Cerro Tololo Obs. (807) 60 cubewano? 46.4 0.00 9 46.4 46.4 MPC · JPL
1999 LB37 8 June 1999 Palomar Obs. (675) 57 plutino? 39.5 0.19 15 31.9 47.1 MPC · JPL
1999 OA4 21 July 1999 J. J. Kavelaars
B. Gladman
M. J. Holman
J.-M. Petit (568)
87 cubewano (cold) 44.8 0.06 3 42.0 47.5 MPC · JPL
1999 OC4 18 July 1999 Mauna Kea Obs. (568) 73 cubewano (cold) 45.9 0.17 1 38.0 53.8 MPC · JPL
1999 OD4 19 July 1999 Mauna Kea Obs. (568) 124 cubewano? 41.8 0.09 14 37.9 45.6 MPC · JPL
1999 OG4 20 July 1999 Mauna Kea Obs. (568) 96 cubewano (cold) 47.4 0.13 1 41.3 53.5 MPC · JPL
1999 OH4 18 July 1999 Mauna Kea Obs. (568) 91 other TNO 40.8 0.04 28 39.0 42.6 BR-mag: 3.20 MPC · JPL
1999 OK4 19 July 1999 Mauna Kea Obs. (568) 126 other TNO 43.5 0.15 30 36.9 50.2 MPC · JPL
1999 OZ3 21 July 1999 J. J. Kavelaars
B. Gladman
M. J. Holman
J.-M. Petit (568)
110 cubewano (cold) 44.4 0.08 3 40.7 48.1 MPC · JPL
1999 RB215 6 September 1999 J. X. Luu
C. Trujillo
D. C. Jewitt (568)
48 twotino 47.9 0.34 8 31.4 64.5 MPC · JPL
1999 RC216 8 September 1999 Mauna Kea Obs. (568) 119 cubewano? 44.4 0.08 1 40.8 48.0 MPC · JPL
1999 RF215 7 September 1999 Mauna Kea Obs. (568) 114 cubewano? 44.0 0.00 4 44.0 44.0 MPC · JPL
1999 RG215 7 September 1999 J. X. Luu
D. C. Jewitt
C. Trujillo (568)
120 cubewano (cold) 46.8 0.08 0 43.2 50.4 MPC · JPL
1999 RK257 12 September 1999 Mauna Kea Obs. (568) 91 other TNO 43.2 0.05 18 41.0 45.4 MPC · JPL
1999 RR215 7 September 1999 D. C. Jewitt
C. Trujillo
J. X. Luu (568)
80 cubewano (cold) 44.3 0.11 1 39.7 49.0 MPC · JPL
1999 RS214 6 September 1999 Mauna Kea Obs. (568) 90 cubewano? 43.0 0.00 3 43.0 43.0 MPC · JPL
1999 RT214 6 September 1999 C. Trujillo
J. X. Luu
D. C. Jewitt (568)
100 cubewano (cold) 42.9 0.06 3 40.6 45.3 albedo: 0.210; binary: 69 km MPC · JPL
1999 RT215 7 September 1999 Mauna Kea Obs. (568) 158 other TNO 43.1 0.00 22 43.1 43.1 MPC · JPL
1999 RU214 6 September 1999 C. Trujillo
D. C. Jewitt
J. X. Luu (568)
146 res · 2:5 56.2 0.34 4 37.0 75.4 MPC · JPL
1999 RV214 6 September 1999 J. X. Luu
D. C. Jewitt
C. Trujillo (568)
87 cubewano (cold) 46.8 0.05 1 44.6 49.0 MPC · JPL
1999 RV215 7 September 1999 J. X. Luu
D. C. Jewitt
C. Trujillo (568)
87 other TNO 44.8 0.19 22 36.4 53.2 MPC · JPL
1999 RW214 6 September 1999 J. X. Luu
C. Trujillo
D. C. Jewitt (568)
115 cubewano (cold) 43.2 0.03 1 41.8 44.6 MPC · JPL
1999 RW215 7 September 1999 J. X. Luu
D. C. Jewitt
C. Trujillo (568)
93 res · 3:4 36.4 0.16 11 30.7 42.2 MPC · JPL
1999 RX214 6 September 1999 D. C. Jewitt
C. Trujillo
J. X. Luu (568)
145 cubewano (cold) 46.4 0.17 5 38.4 54.4 BR-mag: 1.63; taxonomy: IR MPC · JPL
1999 RX215 8 September 1999 D. C. Jewitt
C. Trujillo
J. X. Luu (568)
100 cubewano (cold) 47.4 0.15 1 40.5 54.3 MPC · JPL
1999 RZ214 6 September 1999 C. Trujillo
J. X. Luu
D. C. Jewitt (568)
104 SDO 86.1 0.57 21 36.7 136 MPC · JPL
1999 SA28 16 September 1999 Mauna Kea Obs. (568) 164 plutino? 39.2 0.18 11 32.0 46.5 MPC · JPL
1999 TR11 9 October 1999 S. S. Sheppard (568) 99 plutino 39.3 0.25 17 29.7 49.0 BR-mag: 1.77; taxonomy: RR MPC · JPL

References

edit
  1. ^ a b "List Of Transneptunian Objects". Minor Planet Center. 16 April 2022. Retrieved 16 April 2022.
  2. ^ a b "List Of Centaurs and Scattered-Disk Objects". Minor Planet Center. 16 April 2022. Retrieved 16 April 2022.
  3. ^ a b "List of Known Trans-Neptunian Objects". Johnston's Archive. 2 January 2022. Retrieved 16 April 2022.