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
1999-10-13 09:49:09 C 03 39 06.37 +22 56 11.5 19.8 a 704
1999-10-13 10:12:06 C 03 39 04.91 +22 57 08.0 19.7 a 704
1999-10-13 10:34:32 C 03 39 03.46 +22 58 03.8 19.4 a 704
1999-10-13 10:57:00 C 03 39 01.97 +22 58 59.1 19.7 a 704
1999-10-13 11:19:26 C 03 39 00.53 +22 59 54.4 19.4 a 704
1999-10-14 00:11:58 C 03 38 13.70 +23 32 41.9 611
1999-10-14 00:18:33 C 03 38 13.26 +23 32 58.6 611
1999-10-14 00:21:25 C 03 38 13.06 +23 33 06.1 611
1999-10-14 02:06:49 C 03 38 05.54 +23 37 41.9 c 118
1999-10-14 02:08:39 C 03 38 05.44 +23 37 46.9 c 118
1999-10-14 02:18:23 C 03 38 04.68 +23 38 12.5 c 118
1999-10-14 07:30:51 C 03 37 44.98 +23 52 06.2 18.8 a 704
1999-10-14 07:53:04 C 03 37 43.39 +23 53 06.7 18.6 a 704
1999-10-14 08:15:21 C 03 37 41.73 +23 54 06.4 19.0 a 704
1999-10-14 08:37:47 C 03 37 40.04 +23 55 07.3 19.1 a 704
1999-10-14 09:00:04 C 03 37 38.41 +23 56 06.6 18.8 a 704
1999-10-14 09:35:14 C 03 37 35.94 +23 57 40.8 z 684
1999-10-14 09:39:46 C 03 37 35.63 +23 57 50.6 z 684
1999-10-15 07:44:04 C 03 35 59.34 +24 59 43.2 18.9 a 704
1999-10-15 08:51:03 C 03 35 53.64 +25 03 00.7 19.2 a 704
1999-10-15 09:13:18 C 03 35 51.80 +25 04 06.2 19.2 a 704
1999-10-15 09:58:37 C 03 35 48.07 +25 06 17.6 z 684
1999-10-15 10:08:55 C 03 35 47.14 +25 06 49.0 z 684
1999-10-15 16:27:36 C 03 35 16.67 +25 26 00.5 413
1999-10-15 16:29:54 C 03 35 16.46 +25 26 07.2 413
1999-10-16 00:58:52 C 03 34 33.65 +25 51 29.8 d 046
1999-10-16 01:00:22 C 03 34 33.52 +25 51 34.9 d 046
1999-10-16 01:01:38 C 03 34 33.38 +25 51 37.3 d 046
1999-10-16 01:02:53 C 03 34 33.25 +25 51 43.1 d 046
1999-10-16 01:04:07 C 03 34 33.18 +25 51 44.3 d 046
1999-10-16 01:05:23 C 03 34 33.04 +25 51 49.7 d 046
1999-10-16 08:02:59 C 03 33 56.58 +26 13 47.0 18.5 a 704
1999-10-16 08:25:48 C 03 33 54.27 +26 14 59.6 19.0 a 704
1999-10-16 08:48:33 C 03 33 52.07 +26 16 13.2 18.9 a 704
1999-10-16 09:11:15 C 03 33 49.83 +26 17 26.1 18.8 a 704
1999-10-16 09:34:00 C 03 33 47.59 +26 18 38.0 18.7 a 704
1999-10-16 09:41:49 C 03 33 47.27 +26 18 56.3 c 658
1999-10-16 09:44:43 C 03 33 46.98 +26 19 05.8 c 658
1999-10-16 09:48:29 C 03 33 46.61 +26 19 17.8 c 658
1999-10-16 16:50:04 C 03 33 06.68 +26 42 37.6 413
1999-10-16 16:53:35 C 03 33 06.32 +26 42 49.2 413
1999-10-16 16:55:38 C 03 33 06.09 +26 42 56.0 413
1999-10-17 22:50:31 C 03 29 59.00 +28 26 25.8 c 118
1999-10-17 23:00:36 C 03 29 57.77 +28 27 02.5 c 118
1999-10-20 16:18:14 C 03 20 37.73 +33 00 59.0 360
1999-10-20 16:21:30 C 03 20 37.09 +33 01 14.4 360
1999-10-20 16:25:45 C 03 20 36.31 +33 01 35.2 360
1999-10-20 16:52:43 C 03 20 31.19 +33 03 42.6 z 402
1999-10-20 16:58:09 C 03 20 30.14 +33 04 09.1 z 402
1999-10-20 17:00:03 C 03 20 29.83 +33 04 17.3 z 402