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
1999-09-16 07:00:00 C 22 47 07.54 +22 48 25.3 848
1999-09-16 07:04:26 C 22 47 07.12 +22 48 21.6 848
1999-09-16 07:08:04 C 22 47 06.74 +22 48 18.3 848
1999-09-18 02:46:18 C 22 42 43.46 +22 07 14.9 832
1999-09-18 04:09:00 C 22 42 34.93 +22 05 54.9 832
1999-09-18 04:55:12 C 22 42 30.74 +22 05 12.3 18.3 a 704
1999-09-18 05:14:14 C 22 42 28.80 +22 04 55.0 18.2 a 704
1999-09-18 05:33:36 C 22 42 26.75 +22 04 35.7 17.9 a 704
1999-09-18 05:52:56 C 22 42 24.74 +22 04 15.9 18.2 a 704
1999-09-27 14:18:25 C 22 22 06.08 +18 00 21.3 z 402
1999-09-27 14:21:45 C 22 22 05.81 +18 00 18.1 z 402
1999-09-27 14:25:03 C 22 22 05.51 +18 00 14.0 z 402
1999-10-03 04:22:21 C 22 12 29.22 +15 20 44.1 19.2 a 704
1999-10-03 04:52:52 C 22 12 27.08 +15 20 06.8 19.0 a 704
1999-10-03 05:08:19 C 22 12 25.99 +15 19 50.2 19.6 a 704
1999-10-03 05:23:29 C 22 12 25.06 +15 19 31.6 19.7 a 704
1999-10-08 02:03:26 C 22 05 54.63 +13 00 15.1 832
1999-10-08 03:18:03 C 22 05 50.77 +12 58 47.1 832
1999-10-10 04:23:39 C 22 03 39.24 +12 01 24.8 18.9 a 704
1999-10-10 04:45:55 C 22 03 38.19 +12 00 59.0 19.4 a 704
1999-10-10 05:08:11 C 22 03 37.23 +12 00 33.6 19.4 a 704
1999-10-10 05:30:24 C 22 03 36.18 +12 00 06.8 19.1 a 704
1999-10-10 05:52:33 C 22 03 35.20 +11 59 42.1 19.4 a 704
1999-11-06 02:23:26 C 22 01 45.38 +02 10 20.0 19.9 a 704
1999-11-06 02:47:05 C 22 01 46.07 +02 10 06.1 19.9 a 704
1999-11-06 03:10:41 C 22 01 46.73 +02 09 52.2 19.7 a 704
1999-11-06 03:34:16 C 22 01 47.40 +02 09 36.4 19.9 a 704
2000-07-21 00:43:38 C 20 52 52.85 +21 33 09.5 118
2000-07-21 00:48:37 C 20 52 52.18 +21 33 07.7 118
2000-08-04 05:19:55 C 20 12 30.91 +17 48 20.3 17.9 c 704
2000-08-04 05:40:18 C 20 12 28.72 +17 48 02.1 17.5 c 704
2000-08-04 06:00:38 C 20 12 26.50 +17 47 44.1 18.0 c 704
2000-08-04 06:20:57 C 20 12 24.38 +17 47 25.8 17.8 c 704
2001-08-15 01:26:00 C 15 41 58.53 -02 32 48.2 d 829
2001-08-15 01:39:26 C 15 42 00.59 -02 32 55.6 d 829
2006-09-19 11:27:34 C 07 08 22.44 +24 01 20.1 c 691
2006-09-19 11:45:32 C 07 08 25.95 +24 01 07.0 c 691
2006-09-19 12:03:29 C 07 08 29.48 +24 00 54.2 c 691
2007-10-02 23:19:15 C 04 25 36.92 +35 33 22.8 r 106
2007-10-02 23:27:33 C 04 25 37.60 +35 33 24.0 r 106
2007-10-02 23:35:50 C 04 25 38.43 +35 33 26.2 r 106
2007-10-02 23:44:07 C 04 25 39.11 +35 33 26.8 r 106
2007-10-05 03:23:03 C 04 30 31.13 +35 38 45.8 c A24
2007-10-09 22:24:37 C 04 41 42.22 +35 43 45.7 o J65
2007-10-11 01:09:39 C 04 44 21.25 +35 43 33.3 r 084
2007-10-11 01:13:53 C 04 44 21.62 +35 43 33.0 r 084
2007-10-17 00:49:18 C 04 59 20.27 +35 30 01.4 o 987
2007-10-17 01:01:24 C 04 59 21.56 +35 29 59.4 o 987
2007-10-17 01:20:04 C 04 59 23.47 +35 29 56.6 o 987
2007-10-20 16:44:53 C 05 09 14.80 +35 09 24.2 r D29
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)