IAA RAS IAA Minor Planet Database

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
2019-07-20 02:15:24 S 15 33 39.341 +12 00 55.94 – L C51
2019-07-20 05:23:43 S 15 34 12.816 +11 56 41.42 – L C51
2019-07-20 08:32:13 S 15 34 46.222 +11 52 27.01 – L C51
2019-07-20 11:40:32 S 15 35 19.452 +11 48 13.50 – L C51
2019-07-20 14:48:51 S 15 35 52.517 +11 44 01.54 – L C51
2019-07-20 14:49:02 S 15 35 52.548 +11 44 00.64 – L C51
2019-07-20 17:57:21 S 15 36 25.450 +11 39 49.39 – L C51
2019-07-20 21:05:30 C 15 36 57.51 +11 35 22.5 – q 160
2019-07-20 21:08:32 C 15 36 58.03 +11 35 18.4 – q 160
2019-07-20 21:11:33 C 15 36 58.54 +11 35 14.4 – q 160
2019-07-21 00:14:10 S 15 37 30.835 +11 31 26.83 – L C51
2019-07-21 03:22:29 S 15 38 03.33 +11 27 19.1 – L C51
2019-07-21 06:30:48 S 15 38 35.63 +11 23 10.7 – L C51
2019-07-21 07:59:01 C 15 38 49.93 +11 21 08.9 – V T08
2019-07-21 08:03:33 C 15 38 50.70 +11 21 03.1 – V T08
2019-07-21 08:11:20 C 15 38 51.95 +11 20 52.9 – V T08
2019-07-21 09:39:18 S 15 39 07.83 +11 19 02.8 – L C51
2019-07-21 11:13:22 S 15 39 23.87 +11 16 59.4 – L C51
2019-07-21 12:47:37 S 15 39 39.85 +11 14 55.9 – L C51
2019-07-21 14:21:52 S 15 39 55.84 +11 12 52.5 – L C51
2019-07-21 15:55:56 S 15 40 11.78 +11 10 50.0 – L C51
2019-07-21 17:30:11 S 15 40 27.66 +11 08 47.2 – L C51
2019-07-21 19:04:26 S 15 40 43.553 +11 06 44.60 – L C51
2019-07-21 20:38:30 S 15 40 59.36 +11 04 42.5 – L C51
2019-07-21 21:31:35 C 15 41 07.51 +11 03 17.7 – q 160
2019-07-21 21:33:46 C 15 41 07.89 +11 03 14.0 – q 160
2019-07-21 21:35:59 C 15 41 08.26 +11 03 10.6 – q 160
2019-07-21 22:12:45 S 15 41 15.142 +11 02 39.98 – L C51
2019-07-21 23:47:00 S 15 41 30.92 +11 00 37.9 – L C51
2019-07-22 01:21:04 S 15 41 46.63 +10 58 36.3 – L C51
2019-07-22 01:21:15 S 15 41 46.67 +10 58 35.7 – L C51
2019-07-22 02:55:20 S 15 42 02.39 +10 56 34.1 – L C51
2019-07-22 04:29:34 S 15 42 17.96 +10 54 32.6 – L C51
2019-07-22 07:37:53 S 15 42 49.22 +10 50 30.4 – L C51
2019-07-22 07:56:46 C 15 42 51.62 +10 50 00.1 – V T05
2019-07-22 08:02:06 C 15 42 52.46 +10 49 53.5 – V T05
2019-07-22 08:10:45 C 15 42 53.82 +10 49 42.1 – V T05
2019-07-22 09:12:08 S 15 43 04.77 +10 48 29.5 – L C51
2019-07-22 12:20:27 S 15 43 35.74 +10 44 28.5 – L C51
2019-07-22 13:54:42 S 15 43 51.29 +10 42 28.8 – L C51
2019-07-22 15:28:57 S 15 44 06.69 +10 40 28.2 – L C51
2019-07-22 17:03:02 S 15 44 22.11 +10 38 28.6 – L C51
2019-07-22 18:37:16 S 15 44 37.41 +10 36 28.8 – L C51
2019-07-22 20:11:31 S 15 44 52.77 +10 34 28.7 – L C51
2019-07-22 21:45:36 S 15 45 08.08 +10 32 29.2 – L C51
2019-07-22 23:19:51 S 15 45 23.24 +10 30 30.9 – L C51
2019-07-23 00:54:06 S 15 45 38.59 +10 28 31.3 – L C51
2019-07-23 02:28:09 S 15 45 53.72 +10 26 32.1 – L C51
2019-07-23 04:02:24 S 15 46 08.91 +10 24 34.0 – L C51
2019-07-23 05:36:39 S 15 46 24.103 +10 22 35.44 – L C51
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)