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
1999-11-06 11:51:26 C 08 20 02.62 +02 55 59.4 18.4 a 704
1999-11-10 19:50:45 C 08 47 27.09 +01 41 54.7 i 888
1999-11-10 20:02:24 C 08 47 30.27 +01 41 46.0 i 888
1999-11-10 20:08:58 C 08 47 32.06 +01 41 40.7 i 888
1999-11-13 01:30:31 C 09 02 44.63 +01 00 31.3 071
1999-11-13 01:35:23 C 09 02 45.67 +01 00 27.4 071
1999-11-13 01:40:15 C 09 02 47.35 +01 00 24.0 071
1999-11-13 01:45:07 C 09 02 48.69 +01 00 20.5 071
1999-11-14 01:20:07 C 09 09 46.59 +00 41 31.7 071
1999-11-14 01:27:32 C 09 09 48.78 +00 41 25.8 071
1999-11-14 01:29:47 C 09 09 49.48 +00 41 24.1 071
1999-11-14 01:32:04 C 09 09 50.15 +00 41 22.2 071
1999-11-21 02:55:02 C 10 03 57.53 -01 42 14.0 c 046
1999-11-21 02:57:07 C 10 03 58.34 -01 42 16.7 c 046
1999-11-21 02:58:50 C 10 03 58.76 -01 42 18.3 c 046
1999-11-21 03:00:57 C 10 03 59.59 -01 42 19.3 c 046
1999-11-21 03:03:18 C 10 04 00.33 -01 42 21.6 c 046
1999-11-27 10:05:49 C 10 56 48.80 -03 53 51.8 i 739
1999-11-27 10:10:30 C 10 56 50.56 -03 53 56.2 i 739
1999-11-27 10:15:19 C 10 56 52.10 -03 53 58.6 i 739
1999-12-03 04:04:26 C 11 46 03.12 -05 44 49.5 118
1999-12-03 04:08:56 C 11 46 04.74 -05 44 52.4 118
1999-12-03 04:14:19 C 11 46 06.58 -05 44 57.1 118
1999-12-08 11:27:19 C 12 29 57.55 -07 12 00.5 675
1999-12-08 11:32:41 C 12 29 59.25 -07 12 04.1 675
1999-12-20 04:25:13 C 13 54 55.54 -09 29 31.6 c 046
1999-12-20 04:28:14 C 13 54 56.36 -09 29 34.3 c 046
1999-12-20 04:30:17 C 13 54 56.93 -09 29 33.0 c 046
1999-12-20 04:31:55 C 13 54 57.34 -09 29 35.3 c 046
2000-02-07 18:06:56 C 17 34 07.67 -13 39 40.0 413
2000-02-07 18:10:09 C 17 34 08.09 -13 39 40.2 413
2000-02-07 18:12:59 C 17 34 08.46 -13 39 40.5 413
2000-02-09 17:58:07 C 17 40 15.71 -13 42 24.6 413
2000-02-09 18:05:11 C 17 40 16.56 -13 42 24.5 413
2004-04-29 14:28:05 C 20 55 38.18 -16 26 05.4 c F65
2004-04-29 14:31:39 C 20 55 38.27 -16 26 05.5 c F65
2004-04-29 14:35:15 C 20 55 38.33 -16 26 05.4 c F65
2006-10-22 06:00:15 C 00 55 56.16 -12 41 12.7 o 644
2006-10-22 06:38:26 C 00 55 53.98 -12 41 24.1 o 644
2006-10-22 07:10:31 C 00 55 52.16 -12 41 33.2 o 644
2006-10-24 07:08:04 C 00 53 14.55 -12 55 23.6 o 644
2006-10-24 07:37:56 C 00 53 12.88 -12 55 32.1 o 644
2006-10-24 08:09:36 C 00 53 11.14 -12 55 41.3 o 644
2006-10-28 04:56:58 C 00 48 12.13 -13 19 16.2 r 703
2006-10-28 05:06:19 C 00 48 11.66 -13 19 21.6 r 703
2006-10-28 05:15:38 C 00 48 11.01 -13 19 22.5 r 703
2006-10-28 05:24:59 C 00 48 10.65 -13 19 23.5 r 703
2006-11-21 03:47:52 C 00 24 05.02 -14 04 22.0 c 711
2006-11-21 04:04:43 C 00 24 04.53 -14 04 20.4 c 711
2006-11-21 04:21:32 C 00 24 04.05 -14 04 19.6 c 711