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
2018-07-13 07:21:15 C 12 35 26.93 +07 45 31.3 U T08
2018-07-13 07:26:02 C 12 35 27.92 +07 45 24.0 U T08
2018-07-13 07:36:13 C 12 35 29.66 +07 45 09.2 U T08
2018-07-13 12:23:36 C 12 36 21.79 +07 38 07.7 q D29
2018-07-13 12:40:09 C 12 36 24.76 +07 37 44.0 q D29
2019-07-01 12:17:53 C 21 44 54.334 -18 00 28.51 U F51
2019-07-01 12:37:27 C 21 44 53.852 -18 00 32.98 U F51
2019-07-01 12:57:00 C 21 44 53.371 -18 00 37.02 U F51
2019-07-01 13:16:34 C 21 44 52.859 -18 00 41.23 U F51
2019-08-08 10:40:04 C 21 12 13.273 -21 40 24.01 U F51
2019-08-08 10:54:17 C 21 12 12.658 -21 40 27.07 U F51
2019-08-08 11:08:31 C 21 12 12.057 -21 40 30.54 U F51
2019-08-08 11:22:43 C 21 12 11.435 -21 40 33.52 U F51
2019-08-24 09:02:04 C 20 56 48.563 -22 56 18.43 U F51
2019-08-24 09:17:53 C 20 56 47.964 -22 56 20.51 U F51
2019-08-24 09:33:40 C 20 56 47.350 -22 56 23.63 U F51
2019-08-24 09:49:29 C 20 56 46.771 -22 56 25.96 U F51
2019-08-28 08:55:47 C 20 53 19.663 -23 11 22.07 U F51
2019-08-28 09:11:17 C 20 53 19.104 -23 11 24.43 U F51
2019-08-28 09:26:45 C 20 53 18.533 -23 11 26.75 U F51
2019-08-28 09:42:14 C 20 53 17.973 -23 11 29.09 U F51
2020-08-14 13:04:52 C 23 35 44.912 -14 08 12.96 U F51
2020-08-14 13:20:59 C 23 35 44.451 -14 08 17.68 U F51
2020-08-14 13:37:04 C 23 35 43.979 -14 08 22.24 U F51
2020-08-14 13:53:14 C 23 35 43.518 -14 08 27.19 U F51
2020-08-19 12:41:49 C 23 32 10.704 -14 43 14.13 U F51
2020-08-19 12:59:49 C 23 32 10.123 -14 43 19.44 U F51
2020-08-19 13:17:49 C 23 32 09.537 -14 43 24.64 U F51
2020-09-18 09:57:17 C 23 05 42.735 -18 02 38.42 U F51
2020-09-18 10:12:41 C 23 05 42.144 -18 02 42.10 U F51
2020-09-18 10:28:06 C 23 05 41.541 -18 02 45.55 U F51
2020-10-10 07:06:22 C 22 47 42.550 -19 29 10.01 U F51
2020-10-10 07:21:15 C 22 47 42.153 -19 29 11.55 U F51
2020-10-10 07:36:11 C 22 47 41.713 -19 29 13.03 U F51
2020-10-16 06:33:24 C 22 43 58.833 -19 40 06.31 U F51
2020-10-16 06:50:11 C 22 43 58.415 -19 40 07.07 U F51
2020-10-16 07:23:43 C 22 43 57.606 -19 40 09.22 U F51
2021-08-16 13:40:15 C 04 12 25.957 +09 41 29.83 U F51
2021-08-16 13:54:38 C 04 12 27.166 +09 41 31.09 U F51
2021-08-16 14:08:57 C 04 12 28.364 +09 41 32.33 U F51
2021-09-04 13:43:13 C 04 53 37.70 +10 00 36.4 V T08
2021-09-04 13:47:12 C 04 53 38.06 +10 00 36.5 V T08
2021-09-04 14:45:56 C 04 53 43.61 +10 00 36.8 V T08
2021-09-04 15:05:41 C 04 53 45.54 +10 00 35.3 V T08
2021-09-05 13:20:50 C 04 55 55.899 +10 00 24.29 U F52
2021-09-05 14:01:13 C 04 55 59.803 +10 00 23.95 U F52
2021-09-05 14:21:26 C 04 56 01.756 +10 00 23.75 U F52
2021-09-06 10:56:08 C 04 58 03.16 +10 00 05.0 U I41
2021-09-06 11:16:50 C 04 58 05.19 +10 00 04.8 U I41
2021-09-08 10:47:47 C 05 02 49.16 +09 59 01.1 U I41