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 17:13:56 S 10 09 28.598 -00 31 26.76 V C57
2021-11-16 17:13:56 s 1 -148728.44 2 +254174.46 3610.0 C57
2021-11-16 17:23:56 S 10 09 31.507 -00 31 38.03 V C57
2021-11-16 17:23:56 s 1 -148942.61 7 +253632.95 8730.0 C57
2021-11-16 17:33:56 S 10 09 34.973 -00 31 45.98 V C57
2021-11-16 17:33:56 s 1 -149156.00 0 +253090.09 660.0 C57
2021-11-16 17:43:56 S 10 09 37.894 -00 31 45.80 V C57
2021-11-16 17:43:56 s 1 -149368.58 8 +252545.87 9380.0 C57
2021-11-16 18:13:56 S 10 09 47.244 -00 32 24.83 V C57
2021-11-16 18:13:56 s 1 -150001.53 6 +250905.08 6210.0 C57
2021-11-16 18:23:56 S 10 09 50.825 -00 32 32.50 V C57
2021-11-16 18:23:56 s 1 -150210.90 1 +250355.44 1990.0 C57
2021-11-16 18:33:56 S 10 09 53.645 -00 32 37.57 V C57
2021-11-16 18:33:56 s 1 -150419.45 1 +249804.43 4490.0 C57
2021-11-16 18:43:56 S 10 09 57.463 -00 32 50.82 V C57
2021-11-16 18:43:56 s 1 -150627.18 2 +249252.06 3690.0 C57
2021-11-16 18:53:56 S 10 10 00.756 -00 32 55.46 V C57
2021-11-16 18:53:56 s 1 -150834.08 9 +248698.33 9600.0 C57
2021-11-16 19:03:56 S 10 10 03.463 -00 32 59.64 V C57
2021-11-16 19:03:56 s 1 -151040.16 9 +248143.23 2180.0 C57
2021-11-16 19:13:56 S 10 10 07.006 -00 33 15.34 V C57
2021-11-16 19:13:56 s 1 -151245.41 8 +247586.76 1420.0 C57
2021-11-16 19:23:56 S 10 10 10.200 -00 33 24.62 V C57
2021-11-16 19:23:56 s 1 -151449.83 2 +247028.92 7320.0 C57
2021-11-16 19:33:56 S 10 10 12.878 -00 33 33.66 V C57
2021-11-16 19:33:56 s 1 -151653.40 6 +246469.71 9840.0 C57
2021-11-16 19:43:56 S 10 10 16.385 -00 33 41.65 V C57
2021-11-16 19:43:56 s 1 -151856.13 7 +245909.13 8980.0 C57
2021-11-16 19:53:56 S 10 10 19.644 -00 33 49.57 V C57
2021-11-16 19:53:56 s 1 -152058.02 0 +245347.17 4730.0 C57
2021-11-16 20:03:56 S 10 10 22.862 -00 33 57.60 V C57
2021-11-16 20:03:56 s 1 -152259.05 2 +244783.84 7050.0 C57
2021-11-16 20:23:56 S 10 10 29.069 -00 34 16.64 V C57
2021-11-16 20:23:56 s 1 -152658.54 3 +243653.04 1400.0 C57
2021-11-16 20:33:56 S 10 10 32.083 -00 34 25.25 V C57
2021-11-16 20:33:56 s 1 -152856.99 4 +243085.56 3380.0 C57
2021-11-16 20:43:56 S 10 10 35.558 -00 34 33.38 V C57
2021-11-16 20:43:56 s 1 -153054.57 7 +242516.70 1890.0 C57
2021-11-16 20:53:56 S 10 10 38.736 -00 34 44.54 V C57
2021-11-16 20:53:56 s 1 -153251.28 6 +241946.46 6900.0 C57
2021-11-16 21:03:56 S 10 10 41.930 -00 34 54.84 V C57
2021-11-16 21:03:56 s 1 -153447.11 9 +241374.83 8400.0 C57
2021-11-16 21:23:56 S 10 10 47.722 -00 35 10.57 V C57
2021-11-16 21:23:56 s 1 -153836.13 5 +240227.40 790.0 C57
2021-11-16 21:33:56 S 10 10 51.456 -00 35 17.09 V C57
2021-11-16 21:33:56 s 1 -154029.31 0 +239651.60 1650.0 C57
2021-11-16 21:43:56 S 10 10 54.660 -00 35 31.20 V C57
2021-11-16 21:43:56 s 1 -154221.59 0 +239074.40 8930.0 C57
2021-11-16 21:53:56 S 10 10 57.982 -00 35 39.55 V C57
2021-11-16 21:53:56 s 1 -154412.97 1 +238495.81 2620.0 C57