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
2021-11-16 22:03:56 S 10 11 01.178 -00 35 45.92 V C57
2021-11-16 22:03:56 s 1 -154603.44 9 +237915.81 2690.0 C57
2021-11-16 22:13:56 S 10 11 04.373 -00 35 51.68 V C57
2021-11-16 22:13:56 s 1 -154793.01 9 +237334.42 9130.0 C57
2021-11-16 22:23:56 S 10 11 07.668 -00 36 01.73 V C57
2021-11-16 22:23:56 s 1 -154981.67 6 +236751.63 1930.0 C57
2021-11-16 22:33:56 S 10 11 10.519 -00 36 08.28 V C57
2021-11-16 22:33:56 s 1 -155169.41 6 +236167.43 1050.0 C57
2021-11-16 22:43:56 S 10 11 13.246 -00 36 21.02 V C57
2021-11-16 22:43:56 s 1 -155356.23 4 +235581.83 6500.0 C57
2021-11-16 22:53:56 S 10 11 16.349 -00 36 31.07 V C57
2021-11-16 22:53:56 s 1 -155542.12 7 +234994.82 8250.0 C57
2021-11-16 23:03:56 S 10 11 19.541 -00 36 38.77 V C57
2021-11-16 23:03:56 s 1 -155727.08 8 +234406.40 6280.0 C57
2021-11-16 23:23:56 S 10 11 26.674 -00 36 55.62 V C57
2021-11-16 23:23:56 s 1 -156094.19 9 +233225.33 1110.0 C57
2021-11-16 23:43:56 S 10 11 32.844 -00 37 16.90 V C57
2021-11-16 23:43:56 s 1 -156457.53 0 +232038.61 860.0 C57
2021-11-17 00:03:56 S 10 11 39.065 -00 37 30.68 V C57
2021-11-17 00:03:56 s 1 -156817.04 4 +230846.20 5370.0 C57
2021-11-17 00:13:56 S 10 11 42.473 -00 37 40.51 V C57
2021-11-17 00:13:56 s 1 -156995.35 7 +230247.87 6870.0 C57
2021-11-17 00:33:56 S 10 11 48.828 -00 38 00.89 V C57
2021-11-17 00:33:56 s 1 -157349.07 1 +229046.93 8260.0 C57
2021-11-17 00:43:56 S 10 11 51.670 -00 38 03.08 V C57
2021-11-17 00:43:56 s 1 -157524.46 2 +228444.33 8120.0 C57
2021-11-17 00:53:56 S 10 11 55.327 -00 38 12.66 V C57
2021-11-17 00:53:56 s 1 -157698.86 9 +227840.29 4050.0 C57
2021-11-17 01:03:56 S 10 11 58.250 -00 38 25.73 V C57
2021-11-17 01:03:56 s 1 -157872.28 8 +227234.82 6050.0 C57
2021-11-17 01:33:56 S 10 12 07.687 -00 38 52.58 V C57
2021-11-17 01:33:56 s 1 -158386.56 0 +225409.80 8200.0 C57
2021-11-17 01:53:56 S 10 12 14.078 -00 39 08.06 V C57
2021-11-17 01:53:56 s 1 -158724.37 1 +224185.93 6260.0 C57
2021-11-17 02:03:56 S 10 12 17.839 -00 39 22.39 V C57
2021-11-17 02:03:56 s 1 -158891.75 0 +223571.83 4210.0 C57
2021-11-17 02:13:56 S 10 12 20.650 -00 39 22.57 V C57
2021-11-17 02:13:56 s 1 -159058.10 4 +222956.29 8090.0 C57
2021-11-17 02:23:56 S 10 12 23.681 -00 39 33.95 V C57
2021-11-17 02:23:56 s 1 -159223.42 8 +222339.30 7870.0 C57
2021-11-17 02:33:56 S 10 12 27.197 -00 39 46.19 V C57
2021-11-17 02:33:56 s 1 -159387.71 7 +221720.87 3540.0 C57
2021-11-17 03:23:56 S 10 12 42.271 -00 40 23.77 V C57
2021-11-17 03:23:56 s 1 -160193.44 5 +218606.89 9410.0 C57
2021-11-17 03:53:56 S 10 12 52.634 -00 40 59.38 V C57
2021-11-17 03:53:56 s 1 -160664.11 1 +216720.99 8210.0 C57
2021-11-17 04:03:56 S 10 12 55.860 -00 41 04.13 V C57
2021-11-17 04:03:56 s 1 -160818.83 8 +216089.43 5900.0 C57
2021-11-17 04:13:56 S 10 12 58.925 -00 41 15.11 V C57
2021-11-17 04:13:56 s 1 -160972.47 4 +215456.40 9270.0 C57