17181 (1999 UM3)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6740285265 ± 7.65e-08
Semi-major axis (a)2.3703717975 AU ± 6.99e-09
Inclination (i)10.65320757° ± 1.04e-05
Long. of Asc. Node (Ω)113.55698136° ± 5.93e-05
Arg. of Perihelion (ω)36.77082206° ± 5.91e-05
Mean Anomaly (M)23.98511905° ± 4.58e-06
Mean Motion (n)0.2700769803°/day ± 1.20e-09
Perihelion dist (q)0.77267359 AU ± 1.81e-07
Aphelion dist (Q)3.96807001 AU ± 1.82e-07
Orbital Period3.64942722 yr ± 1.61e-08
Physical Parameters
H (abs. magnitude)16.77
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual1.132″
Uncertainty0
Orbit TypeApollo
MOID0.071891 AU
Observations Used980
Oppositions50
Arc Total1955-2024
First Observation Used1955-10-24
Last Observation Used2024-11-02
Observations (1801)
Date Type RA Dec Mag Band Observatory
1955-10-24 08:21:00 03 13 16.64 -06 36 48.1 261
1955-10-24 09:11:00 03 13 14.30 -06 37 20.5 261
1955-11-11 06:08:59 02 46 10.57 -11 11 02.2 261
1999-10-19 09:33:06 C 06 52 24.40 +06 39 11.7 18.4 a 704
1999-10-19 09:52:55 C 06 52 27.56 +06 39 04.2 18.8 a 704
1999-10-19 10:12:36 C 06 52 30.71 +06 38 56.6 18.6 a 704
1999-10-19 10:32:19 C 06 52 33.85 +06 38 49.0 18.7 a 704
1999-10-19 10:51:59 C 06 52 37.00 +06 38 42.1 18.3 a 704
1999-10-21 09:37:15 C 07 00 22.91 +06 20 29.4 18.6 a 704
1999-10-21 09:59:56 C 07 00 26.77 +06 20 20.0 19.6 a 704
1999-10-21 10:21:53 C 07 00 30.37 +06 20 11.3 18.1 a 704
1999-10-21 10:44:33 C 07 00 34.19 +06 20 02.2 19.1 a 704
1999-10-21 11:06:29 C 07 00 37.82 +06 19 53.4 18.7 a 704
1999-10-22 08:51:30 C 07 04 21.79 +06 10 58.6 734
1999-10-22 08:54:41 C 07 04 22.36 +06 10 57.4 734
1999-10-22 08:57:53 C 07 04 22.96 +06 10 56.2 734
1999-10-22 10:05:21 C 07 04 34.56 +06 10 28.3 18.6 a 704
1999-10-22 10:05:36 C 07 04 34.63 +06 10 28.1 18.4 a 704
1999-10-22 10:05:51 C 07 04 34.70 +06 10 27.8 18.3 a 704
1999-10-22 10:23:57 C 07 04 37.79 +06 10 19.8 19.7 a 704
1999-10-22 10:24:11 C 07 04 37.84 +06 10 19.6 19.2 a 704
1999-10-22 10:24:26 C 07 04 37.87 +06 10 19.8 18.8 a 704
1999-10-22 10:29:47 C 07 04 38.86 +06 10 15.6 c 658
1999-10-22 10:35:45 C 07 04 39.89 +06 10 12.7 c 658
1999-10-22 10:38:53 C 07 04 40.41 +06 10 12.4 c 658
1999-10-22 10:42:17 C 07 04 40.92 +06 10 13.1 19.2 a 704
1999-10-22 10:42:32 C 07 04 40.94 +06 10 12.6 18.9 a 704
1999-10-22 10:42:47 C 07 04 40.97 +06 10 12.4 18.8 a 704
1999-10-22 11:00:42 C 07 04 44.02 +06 10 04.7 19.0 a 704
1999-10-22 11:00:56 C 07 04 44.09 +06 10 04.6 18.9 a 704
1999-10-22 11:01:11 C 07 04 44.11 +06 10 05.0 19.0 a 704
1999-10-22 11:19:20 C 07 04 47.23 +06 09 57.1 18.9 a 704
1999-10-22 11:19:34 C 07 04 47.25 +06 09 57.4 18.7 a 704
1999-10-22 11:19:49 C 07 04 47.31 +06 09 57.1 18.6 a 704
1999-10-23 10:40:56 C 07 08 53.37 +06 00 00.7 c 658
1999-10-23 10:43:02 C 07 08 53.82 +05 59 59.4 c 658
1999-10-23 10:46:12 C 07 08 54.38 +05 59 58.2 c 658
1999-10-24 18:34:39 C 07 14 38.18 +05 45 58.8 z 402
1999-10-24 18:36:27 C 07 14 38.41 +05 45 58.2 z 402
1999-10-24 18:38:17 C 07 14 38.77 +05 45 57.2 z 402
1999-10-24 18:40:06 C 07 14 39.10 +05 45 56.0 z 402
1999-10-30 03:03:43 C 07 39 41.72 +04 42 37.1 c 118
1999-10-30 03:05:17 C 07 39 42.06 +04 42 35.7 c 118
1999-11-01 03:43:51 C 07 50 04.35 +04 15 37.3 c 118
1999-11-01 03:49:32 C 07 50 05.56 +04 15 33.8 c 118
1999-11-01 03:51:00 C 07 50 05.86 +04 15 33.1 c 118
1999-11-06 10:15:32 C 08 19 39.01 +02 57 03.5 19.0 a 704
1999-11-06 10:39:28 C 08 19 44.91 +02 56 47.6 18.3 a 704
1999-11-06 11:03:59 C 08 19 50.95 +02 56 31.3 18.3 a 704
1999-11-06 11:27:46 C 08 19 56.80 +02 56 15.0 18.2 a 704