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
1989-10-25 23:48:00 A 01 24 32.84 +30 01 08.4 16.0 010
1989-10-26 00:47:59 A 01 24 23.67 +29 59 38.0 010
1989-10-28 04:52:00 01 16 45.61 +28 39 08.3 675
1989-10-28 06:02:00 01 16 34.37 +28 37 11.2 675
1989-10-29 05:35:00 A 01 13 01.52 +27 57 06.3 675
1989-10-29 05:55:00 A 01 12 58.54 +27 56 33.9 675
1989-10-31 01:36:59 A 01 06 15.54 +26 36 09.7 010
1989-10-31 01:56:29 A 01 06 12.52 +26 35 32.6 010
1989-10-31 02:06:59 A 01 06 10.84 +26 35 11.2 010
1989-10-31 02:17:59 A 01 06 09.26 +26 34 52.0 010
1989-11-01 04:00:00 A 01 02 14.10 +25 44 18.3 675
1989-11-01 05:15:00 01 02 01.73 +25 41 49.7 675
1989-11-27 19:18:59 A 23 37 37.98 -03 39 25.1 17.5 010
1989-11-27 20:08:59 A 23 37 32.62 -03 41 51.0 010
1989-11-27 20:28:59 A 23 37 30.56 -03 42 49.1 010
1989-11-28 20:01:00 23 35 17.91 -04 50 45.7 010
1989-11-28 20:50:59 A 23 35 13.05 -04 52 59.3 010
1997-10-09 10:49:46 c 08 26 28.56 +18 06 29.4 i 691
1997-10-09 10:57:56 c 08 26 30.10 +18 06 19.3 i 691
1997-10-09 11:14:37 c 08 26 33.86 +18 05 57.1 i 691
1997-10-10 12:00:52 c 08 31 57.73 +17 32 31.1 i 691
1997-10-10 12:07:08 c 08 31 59.09 +17 32 22.1 i 691
1997-10-10 12:21:55 c 08 32 02.24 +17 32 02.5 i 691
1998-08-28 11:56:55 C 02 48 03.19 +31 42 08.7 658
1998-08-28 12:02:25 C 02 48 03.54 +31 42 11.4 658
1998-08-28 12:08:02 C 02 48 03.99 +31 42 13.7 658
1998-09-22 12:15:38 C 03 23 11.91 +35 27 57.4 658
1998-09-22 12:20:45 C 03 23 12.07 +35 27 58.1 658
1998-09-22 12:25:44 C 03 23 12.34 +35 28 00.3 658
1998-09-22 21:27:44 C 03 23 38.80 +35 30 30.7 b 611
1998-09-22 21:36:30 C 03 23 39.38 +35 30 38.5 b 611
1998-10-11 09:40:07 C 03 38 09.951 +36 53 08.80 l G91
1998-10-19 10:01:37 C 03 38 51.27 +36 41 50.4 658
1998-10-19 10:07:28 C 03 38 51.16 +36 41 49.2 658
1998-10-19 10:29:01 C 03 38 50.79 +36 41 45.4 658
1998-10-22 23:12:00 C 03 37 32.76 +36 20 29.4 a 561
1998-10-22 23:22:55 C 03 37 32.43 +36 20 25.9 a 561
1998-10-22 23:35:56 C 03 37 32.05 +36 20 21.9 a 561
1998-10-22 23:48:02 C 03 37 31.66 +36 20 17.6 a 561
1998-10-23 00:00:08 C 03 37 31.29 +36 20 14.0 a 561
1998-10-23 00:10:16 C 03 37 30.97 +36 20 10.4 a 561
1998-10-23 00:19:41 C 03 37 30.71 +36 20 07.6 a 561
1998-10-23 00:30:38 C 03 37 30.35 +36 20 03.6 a 561
1998-10-23 00:40:07 C 03 37 30.06 +36 20 00.6 a 561
1998-10-23 00:49:20 C 03 37 29.78 +36 19 57.3 a 561
1998-10-23 23:27:54 C 03 36 57.20 +36 11 55.7 118
1998-10-23 23:38:44 C 03 36 56.83 +36 11 51.7 118
1998-10-24 16:00:59 C 03 36 29.35 +36 05 31.7 360
1998-10-24 16:06:29 C 03 36 29.14 +36 05 29.4 360
1998-10-24 16:10:30 C 03 36 28.97 +36 05 27.7 360
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)