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
1998-10-25 19:25:03 C 03 35 38.45 +35 52 58.1 z 540
1998-10-25 19:32:26 C 03 35 38.16 +35 52 55.3 z 540
1998-10-25 19:39:39 C 03 35 37.89 +35 52 52.1 z 540
1998-10-27 12:05:53 C 03 34 01.09 +35 31 26.5 658
1998-10-27 12:08:00 C 03 34 00.99 +35 31 25.3 658
1998-10-27 12:09:56 C 03 34 00.90 +35 31 24.0 658
1998-10-28 23:36:53 C 03 32 24.37 +35 08 47.1 16.2 143
1998-10-29 00:09:32 C 03 32 22.44 +35 08 24.4 16.2 143
1998-10-29 00:47:26 C 03 32 20.16 +35 07 58.3 16.2 143
1998-10-31 13:18:21 C 03 28 54.06 +34 19 18.0 z 402
1998-10-31 13:20:21 C 03 28 53.92 +34 19 16.2 z 402
1998-10-31 13:22:22 C 03 28 53.76 +34 19 14.6 z 402
1998-11-02 03:50:35 C 03 26 11.41 +33 41 26.1 z 860
1998-11-02 03:57:29 C 03 26 10.84 +33 41 18.7 z 860
1998-11-02 04:05:17 C 03 26 10.06 +33 41 09.9 z 860
1998-11-05 18:32:45 C 03 18 39.11 +31 45 30.7 z 151
1998-11-05 18:53:25 C 03 18 36.98 +31 45 00.8 z 151
1998-11-05 23:53:08 C 03 18 02.90 +31 37 11.1 118
1998-11-06 00:00:50 C 03 18 02.02 +31 36 58.5 118
1998-11-07 19:20:33 C 03 13 16.65 +30 19 13.3 z 151
1998-11-07 19:31:34 C 03 13 15.26 +30 18 52.6 z 151
1998-11-07 20:25:03 C 03 13 08.15 +30 17 11.3 z 540
1998-11-07 20:31:03 C 03 13 07.37 +30 16 59.9 z 540
1998-11-07 20:35:01 C 03 13 06.84 +30 16 52.2 z 540
1998-11-10 16:19:44 C 03 03 57.83 +27 40 57.3 360
1998-11-10 16:22:29 C 03 03 57.36 +27 40 49.8 360
1998-11-10 16:24:44 C 03 03 56.99 +27 40 43.8 360
1998-11-11 10:47:40 C 03 01 06.27 +26 49 04.6 658
1998-11-11 10:49:23 C 03 01 05.98 +26 48 59.5 658
1998-11-11 10:50:58 C 03 01 05.70 +26 48 54.7 658
1998-11-11 18:46:14 C 02 59 55.03 +26 25 18.1 z 127
1998-11-11 18:58:50 C 02 59 52.87 +26 24 40.8 z 127
1998-11-11 19:00:58 C 02 59 52.71 +26 24 40.8 13.9 143
1998-11-11 19:02:39 C 02 59 52.41 +26 24 35.5 14.0 143
1998-11-11 19:04:54 C 02 59 52.05 +26 24 29.0 13.9 143
1998-11-11 19:46:50 C 02 59 44.77 +26 22 23.9 z 151
1998-11-11 20:00:15 C 02 59 42.42 +26 21 44.1 z 151
1998-11-12 17:37:52 C 02 56 03.56 +25 12 34.9 557
1998-11-12 19:32:28 C 02 55 42.47 +25 06 18.1 557
1998-11-12 22:14:20 C 02 55 11.46 +24 57 13.5 557
1998-11-13 00:15:40 C 02 54 47.89 +24 50 13.9 557
1998-11-13 02:36:56 C 02 54 20.86 +24 41 53.9 557
1998-11-14 02:30:09 C 02 49 58.24 +23 14 15.5 z 758
1998-11-14 02:33:06 C 02 49 57.60 +23 14 04.2 z 758
1998-11-14 02:36:04 C 02 49 56.96 +23 13 52.6 z 758
1998-11-14 02:38:32 C 02 49 56.43 +23 13 43.3 z 758
1998-11-15 07:28:22 C 02 43 59.50 +21 13 03.8 c 699
1998-11-15 07:57:01 C 02 43 52.75 +21 10 54.5 c 699
1998-11-15 08:25:40 C 02 43 45.92 +21 08 46.7 c 699
1998-11-15 18:18:19 C 02 41 42.96 +20 22 50.0 z 610
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)