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
1998-11-24 20:49:19 C 01 30 41.18 -08 43 03.0 557
1998-11-24 20:50:41 C 01 30 40.51 -08 43 18.9 557
1998-11-24 21:00:57 C 01 30 37.68 -08 45 03.0 z 491
1998-11-24 21:11:24 C 01 30 32.53 -08 47 03.4 z 491
1998-11-24 21:15:41 C 01 30 30.43 -08 47 54.1 z 491
1998-11-24 21:36:43 C 01 30 20.08 -08 52 03.2 z 491
1998-11-24 21:41:23 C 01 30 17.73 -08 52 54.7 z 491
1998-11-25 12:33:17 C 01 23 15.95 -11 46 49.1 b 426
1998-11-25 12:39:41 C 01 23 12.62 -11 48 06.2 b 426
1998-11-25 12:43:12 C 01 23 10.80 -11 48 48.5 b 426
1998-11-25 12:48:55 C 01 23 07.82 -11 49 57.2 b 426
1998-11-26 05:15:30 C 01 14 57.39 -15 13 30.6 z 670
1998-11-26 05:28:00 C 01 14 50.54 -15 16 04.7 z 670
1998-11-26 05:46:45 C 01 14 40.24 -15 19 56.2 z 670
1998-12-04 10:35:56 C 22 58 13.45 -50 16 11.5 z 428
1998-12-04 10:37:31 C 22 58 12.05 -50 16 20.7 z 428
1998-12-04 10:39:01 C 22 58 10.77 -50 16 31.3 z 428
1998-12-04 10:40:35 C 22 58 09.38 -50 16 41.1 z 428
1998-12-06 09:53:53 C 22 17 28.66 -54 41 12.5 z 428
1998-12-06 10:13:47 C 22 17 10.75 -54 42 37.5 z 428
1998-12-06 10:18:33 C 22 17 06.40 -54 42 57.5 z 428
1998-12-06 10:25:40 C 22 16 59.94 -54 43 28.4 z 428
1998-12-06 10:27:08 C 22 16 58.68 -54 43 34.2 z 428
1998-12-09 10:22:20 C 21 16 22.42 -58 32 31.7 z 428
1998-12-09 10:24:50 C 21 16 20.22 -58 32 36.4 z 428
1999-08-08 10:09:31 C 00 00 39.34 +25 47 25.0 z 711
1999-08-14 23:48:35 C 23 54 15.02 +26 36 46.0 c 071
1999-08-14 23:54:28 C 23 54 14.76 +26 36 47.5 c 071
1999-08-15 00:00:19 C 23 54 14.41 +26 36 48.5 c 071
1999-08-16 00:46:41 C 23 52 57.80 +26 42 30.6 c 071
1999-08-16 00:52:32 C 23 52 57.45 +26 42 31.2 c 071
1999-08-16 01:00:57 C 23 52 57.01 +26 42 34.2 c 071
1999-08-22 16:49:33 C 23 42 58.86 +27 02 59.7 z 402
1999-08-22 16:51:21 C 23 42 58.72 +27 03 00.2 z 402
1999-08-22 16:53:10 C 23 42 58.53 +27 03 00.2 z 402
1999-09-06 05:07:02 C 23 12 08.39 +25 42 47.8 c 658
1999-09-06 05:12:27 C 23 12 07.87 +25 42 44.9 c 658
1999-09-06 05:17:06 C 23 12 07.38 +25 42 42.5 c 658
1999-09-12 14:12:29 C 22 56 17.01 +24 03 33.0 360
1999-09-12 14:19:00 C 22 56 16.27 +24 03 27.7 360
1999-09-12 14:24:30 C 22 56 15.70 +24 03 23.3 360
1999-09-13 05:29:34 c 22 54 41.86 +23 51 29.5 d 703
1999-09-13 05:45:35 c 22 54 40.19 +23 51 15.6 d 703
1999-09-13 06:01:39 c 22 54 38.37 +23 51 04.5 d 703
1999-09-13 06:18:04 c 22 54 36.70 +23 50 51.3 d 703
1999-09-13 07:04:49 C 22 54 31.72 +23 50 10.4 848
1999-09-13 07:13:53 C 22 54 30.83 +23 50 01.6 848
1999-09-13 07:19:03 C 22 54 30.23 +23 49 58.2 848
1999-09-15 08:27:19 C 22 49 25.41 +23 08 35.6 848
1999-09-15 08:34:55 C 22 49 24.60 +23 08 28.8 848
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)