1999 TW16

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.7347679379 ± 1.56e-07
Semi-major axis (a)1.4240633054 AU ± 9.76e-10
Inclination (i)34.68511422° ± 1.69e-05
Long. of Asc. Node (Ω)28.16194552° ± 4.20e-06
Arg. of Perihelion (ω)134.82477553° ± 1.65e-05
Mean Anomaly (M)89.15326396° ± 6.77e-06
Mean Motion (n)0.5799870976°/day ± 5.96e-10
Perihelion dist (q)0.37770725 AU ± 2.23e-07
Aphelion dist (Q)2.47041936 AU ± 2.23e-07
Orbital Period1.69939346 yr ± 1.75e-09
Physical Parameters
H (abs. magnitude)19.51
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.302″
Uncertainty0
Orbit TypeApollo
MOID0.151986 AU
Observations Used182
Oppositions9
Arc Total1999-2021
First Observation Used1999-10-13
Last Observation Used2021-12-03
Observations (198)
Date Type RA Dec Mag Band Observatory
1999-10-22 08:50:47 C 03 12 23.26 +36 30 36.5 c 658
1999-10-22 08:57:14 C 03 12 21.71 +36 31 13.1 c 658
1999-10-22 09:03:04 C 03 12 20.28 +36 31 46.1 c 658
1999-10-24 16:06:50 C 02 56 11.43 +42 18 00.9 z 402
1999-10-24 16:08:38 C 02 56 10.81 +42 18 10.9 z 402
1999-10-24 16:12:18 C 02 56 09.54 +42 18 34.5 z 402
1999-10-27 18:15:33 C 02 17 27.11 +52 06 51.3 17.2 z 143
1999-10-27 18:29:18 C 02 17 16.75 +52 08 54.3 z 143
1999-10-27 18:33:25 C 02 17 13.73 +52 09 31.6 z 143
1999-10-27 18:34:06 C 02 17 13.17 +52 09 37.2 z 143
1999-10-27 18:40:17 C 02 17 08.57 +52 10 32.5 z 143
1999-10-27 18:41:40 C 02 17 07.55 +52 10 45.1 z 143
1999-10-29 07:38:14 C 01 42 56.57 +57 43 39.5 c 658
1999-10-29 07:41:51 C 01 42 52.40 +57 44 12.4 c 658
1999-10-29 07:44:35 C 01 42 49.24 +57 44 37.3 c 658
1999-10-29 16:47:19 C 01 32 03.63 +59 05 31.4 c 118
1999-10-29 16:49:08 C 01 32 01.34 +59 05 47.8 c 118
1999-10-29 16:53:23 C 01 31 55.95 +59 06 25.9 c 118
1999-10-30 05:51:56 C 01 14 05.34 +61 00 37.6 17.9 a 704
1999-10-30 06:15:19 C 01 13 30.16 +61 03 57.6 17.7 a 704
1999-10-30 06:38:51 C 01 12 54.42 +61 07 17.7 17.8 a 704
1999-10-30 07:02:09 C 01 12 18.99 +61 10 35.0 17.6 a 704
1999-10-30 07:25:27 C 01 11 43.28 +61 13 51.4 18.0 a 704
1999-10-30 21:50:00 C 00 48 07.90 +63 11 04.3 c 046
1999-10-30 21:51:07 C 00 48 05.79 +63 11 13.2 c 046
1999-10-30 21:53:49 C 00 48 00.96 +63 11 32.9 c 046
1999-10-30 21:56:32 C 00 47 56.10 +63 11 54.2 c 046
1999-10-30 21:57:30 C 00 47 54.39 +63 12 01.7 c 046
1999-10-30 21:58:26 C 00 47 52.66 +63 12 08.5 c 046
1999-10-31 03:41:01 C 00 37 25.93 +63 55 17.8 17.7 a 704
1999-10-31 04:04:22 C 00 36 40.68 +63 58 09.5 18.7 a 704
1999-10-31 04:27:55 C 00 35 54.96 +64 01 01.9 18.4 a 704
1999-10-31 04:51:21 C 00 35 09.22 +64 03 51.7 18.2 a 704
1999-10-31 17:16:54 C 00 09 42.93 +65 26 13.0 c 118
1999-10-31 17:20:12 C 00 09 35.80 +65 26 32.8 c 118
1999-10-31 17:21:57 C 00 09 31.92 +65 26 42.7 c 118
1999-10-31 20:55:53 C 00 01 32.42 +65 47 44.2 z 587
1999-10-31 20:58:13 C 00 01 26.98 +65 47 56.5 z 587
1999-10-31 21:01:28 C 00 01 19.59 +65 48 15.2 z 587
2016-10-04 11:43:28 C 04 01 08.41 +19 45 19.7 q G96
2016-10-04 11:50:41 C 04 01 08.51 +19 45 31.4 q G96
2016-10-04 11:57:54 C 04 01 08.58 +19 45 43.8 q G96
2016-10-04 12:05:09 C 04 01 08.71 +19 45 55.8 q G96
2016-10-05 01:57:53 C 04 01 23.05 +20 09 42.3 q K38
2016-10-05 02:23:34 C 04 01 23.36 +20 10 27.7 q K38
2016-10-05 02:59:02 C 04 01 23.79 +20 11 29.5 q K38
2016-10-05 11:36:41 C 04 01 31.74 +20 26 52.9 q G96
2016-10-05 11:42:50 C 04 01 31.79 +20 27 03.6 q G96
2016-10-05 11:49:00 C 04 01 31.85 +20 27 14.9 q G96
2016-10-05 11:55:10 C 04 01 31.95 +20 27 25.7 q G96