11500 Tomaiyowit (1989 UR)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3558433727 ± 2.00e+00
Semi-major axis (a)1.0798578286 AU ± 3.00e+00
Inclination (i)10.31072879° ± 4.00e+00
Long. of Asc. Node (Ω)234.38493694° ± 5.00e+00
Arg. of Perihelion (ω)289.52233292° ± 6.00e+00
Mean Anomaly (M)314.93250442° ± 5.23e-06
Mean Motion (n)0.8783394808°/day ± 3.66e+00
Perihelion dist (q)0.69559758 AU ± 2.90e+00
Aphelion dist (Q)1.46411808 AU ± 4.61e+00
Orbital Period1.12214731 yr ± 4.68e+00
NGA Modelr2
A2-1.39339812e-06 AU/d²
Physical Parameters
H (abs. magnitude)18.38
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.347″
Uncertainty0
Orbit TypeApollo
MOID0.034039 AU
Observations Used1032
Oppositions4
Arc Total1989-2025
First Observation Used1989-10-25
Last Observation Used2025-11-10
Observations (1332)
Date Type RA Dec Mag Band Observatory
1998-11-15 18:28:20 C 02 41 40.64 +20 22 03.5 z 610
1998-11-15 18:38:19 C 02 41 38.33 +20 21 17.0 z 610
1998-11-15 18:48:19 C 02 41 36.01 +20 20 30.6 z 610
1998-11-15 18:58:20 C 02 41 33.70 +20 19 44.2 z 610
1998-11-15 19:08:19 C 02 41 31.34 +20 18 57.5 z 610
1998-11-15 19:18:20 C 02 41 28.97 +20 18 11.0 z 610
1998-11-15 19:28:19 C 02 41 26.60 +20 17 24.4 z 610
1998-11-15 19:38:21 C 02 41 24.23 +20 16 37.6 z 610
1998-11-15 19:48:23 C 02 41 21.86 +20 15 51.0 z 610
1998-11-15 19:58:22 C 02 41 19.44 +20 15 04.0 z 610
1998-11-15 20:08:23 C 02 41 17.04 +20 14 16.9 z 610
1998-11-15 20:18:23 C 02 41 14.64 +20 13 29.7 z 610
1998-11-15 20:28:22 C 02 41 12.25 +20 12 42.6 z 610
1998-11-15 20:38:23 C 02 41 09.85 +20 11 55.3 z 610
1998-11-15 20:48:23 C 02 41 07.41 +20 11 08.4 z 610
1998-11-15 20:58:24 C 02 41 04.98 +20 10 20.9 z 610
1998-11-15 21:08:24 C 02 41 02.54 +20 09 33.4 z 610
1998-11-15 21:18:25 C 02 41 00.11 +20 08 45.9 z 610
1998-11-15 21:28:26 C 02 40 57.68 +20 07 58.4 z 610
1998-11-15 21:38:26 C 02 40 55.22 +20 07 11.0 z 610
1998-11-15 21:48:25 C 02 40 52.79 +20 06 23.1 z 610
1998-11-15 21:58:26 C 02 40 50.36 +20 05 35.3 z 610
1998-11-15 22:08:25 C 02 40 47.92 +20 04 47.4 z 610
1998-11-15 22:18:27 C 02 40 45.49 +20 03 59.5 z 610
1998-11-16 23:54:31 C 02 34 43.70 +17 53 08.0 118
1998-11-17 00:01:27 C 02 34 41.92 +17 52 30.5 118
1998-11-17 07:36:35 c 02 32 50.03 +17 11 03.8 i 691
1998-11-17 08:08:32 c 02 32 41.31 +17 08 02.3 i 691
1998-11-17 08:40:05 c 02 32 32.66 +17 05 01.9 i 691
1998-11-20 01:13:53 C 02 14 34.13 +10 00 42.7 z 860
1998-11-20 01:15:41 C 02 14 33.50 +10 00 29.3 z 860
1998-11-20 01:26:54 C 02 14 29.64 +09 59 03.3 z 860
1998-11-20 01:32:26 C 02 14 27.74 +09 58 20.3 z 860
1998-11-20 14:26:45 C 02 10 20.29 +08 15 02.8 360
1998-11-20 14:32:15 C 02 10 18.36 +08 14 18.2 360
1998-11-20 14:34:29 C 02 10 17.57 +08 14 00.0 360
1998-11-20 22:34:39 C 02 07 41.19 +07 07 57.3 z 952
1998-11-20 22:36:06 C 02 07 40.66 +07 07 45.3 z 952
1998-11-20 22:40:20 C 02 07 39.11 +07 07 10.2 z 952
1998-11-20 22:45:55 C 02 07 37.10 +07 06 23.0 z 952
1998-11-22 17:19:14 C 01 52 27.34 +00 35 44.7 z 151
1998-11-22 17:29:36 C 01 52 23.21 +00 34 01.9 z 151
1998-11-24 11:24:31 C 01 34 58.82 -06 51 36.8 b 426
1998-11-24 11:26:56 C 01 34 57.71 -06 52 03.6 b 426
1998-11-24 11:34:18 C 01 34 54.16 -06 53 27.9 b 426
1998-11-24 18:54:10 C 01 31 36.93 -08 20 42.4 557
1998-11-24 18:55:31 C 01 31 36.27 -08 20 58.2 557
1998-11-24 20:31:58 C 01 30 49.32 -08 39 38.3 118
1998-11-24 20:34:05 C 01 30 48.29 -08 40 03.2 118
1998-11-24 20:35:38 C 01 30 47.54 -08 40 21.1 118
Radar Observations (1)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2007-11-26 12:20:00 -121825.1 0.5 Hz 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m)