164121 (2003 YT1)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2920665159 ± 2.00e+00
Semi-major axis (a)1.1099182345 AU ± 3.00e+00
Inclination (i)44.05771177° ± 4.00e+00
Long. of Asc. Node (Ω)38.31022261° ± 5.00e+00
Arg. of Perihelion (ω)91.00605506° ± 6.00e+00
Mean Anomaly (M)212.28626562° ± 1.15e-06
Mean Motion (n)0.8428995009°/day ± 3.42e+00
Perihelion dist (q)0.78574828 AU ± 3.07e+00
Aphelion dist (Q)1.43408819 AU ± 4.47e+00
Orbital Period1.16932835 yr ± 4.74e+00
NGA Modelr2
A2-3.93312334e-06 AU/d²
Physical Parameters
H (abs. magnitude)16.15
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-29
RMS Residual0.005″
Uncertainty0
Orbit TypeApollo
MOID0.002485 AU
Observations Used1832
Gaia Obs Used128
Oppositions5
Arc Total1982-2017
First Observation Used1982-11-19
Last Observation Used2025-07-16
Observations (2354)
Date Type RA Dec Mag Band Observatory
2010-09-15 11:52:07 S 06 05 29.285 -82 41 24.65 L C51
2010-09-23 08:46:23 S 04 03 55.435 -86 00 14.72 L C51
2010-09-23 11:56:43 S 03 59 56.489 -86 02 24.61 L C51
2010-09-23 15:07:13 S 03 55 53.239 -86 04 30.94 L C51
2010-09-23 18:17:44 S 03 51 42.398 -86 06 32.90 L C51
2010-09-23 21:28:16 S 03 47 28.764 -86 08 29.51 L C51
2010-09-24 00:38:47 S 03 43 08.666 -86 10 21.29 L C51
2010-09-24 06:59:38 S 03 34 16.186 -86 13 49.48 L C51
2010-09-24 13:20:40 S 03 25 04.195 -86 16 53.98 L C51
2010-09-24 16:31:11 S 03 20 20.914 -86 18 17.89 L C51
2010-09-24 19:41:42 S 03 15 34.068 -86 19 35.54 L C51
2010-09-24 21:16:52 S 03 13 09.127 -86 20 11.29 L C51
2010-09-24 22:52:13 S 03 10 43.630 -86 20 46.32 L C51
2010-09-25 00:27:23 S 03 08 16.373 -86 21 19.66 L C51
2010-09-25 03:37:54 S 03 03 19.483 -86 22 21.14 L C51
2010-09-25 05:13:04 S 03 00 50.006 -86 22 49.12 L C51
2010-09-25 06:48:25 S 02 58 19.685 -86 23 15.94 L C51
2010-09-25 08:23:35 S 02 55 48.847 -86 23 41.03 L C51
2010-09-25 11:34:06 S 02 50 43.726 -86 24 26.28 L C51
2010-09-25 13:09:16 S 02 48 10.246 -86 24 46.26 L C51
2010-09-25 13:09:27 S 02 48 10.663 -86 24 46.40 L C51
2010-09-25 14:44:37 S 02 45 36.422 -86 25 04.01 L C51
2010-09-25 16:19:47 S 02 43 02.314 -86 25 20.35 L C51
2010-09-25 17:55:08 S 02 40 27.101 -86 25 35.94 L C51
2010-09-25 21:05:39 S 02 35 16.34 -86 25 58.4 L C51
2010-09-25 22:40:49 S 02 32 38.94 -86 26 07.6 L C51
2010-09-26 00:15:59 S 02 30 02.10 -86 26 15.7 L C51
2010-09-26 05:01:52 S 02 22 07.572 -86 26 27.64 L C51
2010-09-26 06:37:02 S 02 19 32.08 -86 26 27.3 L C51
2010-09-26 11:22:43 S 02 11 37.37 -86 26 17.1 L C51
2010-09-26 12:58:04 S 02 08 59.62 -86 26 10.1 L C51
2010-09-26 14:33:14 S 02 06 21.638 -86 26 01.90 L C51
2010-09-26 16:08:35 S 02 03 43.73 -86 25 49.9 L C51
2010-09-26 17:43:45 S 02 01 04.76 -86 25 37.3 L C51
2010-09-26 19:18:55 S 01 58 27.11 -86 25 23.5 L C51
2010-09-26 20:54:16 S 01 55 49.853 -86 25 07.14 L C51
2010-09-26 22:29:26 S 01 53 14.090 -86 24 49.36 L C51
2010-09-27 03:15:18 S 01 45 23.203 -86 23 42.18 L C51
2010-09-27 04:50:28 S 01 42 48.857 -86 23 15.40 L C51
2010-09-27 06:25:38 S 01 40 12.379 -86 22 49.08 L C51
2010-09-27 08:00:59 S 01 37 37.627 -86 22 20.53 L C51
2010-09-27 11:11:30 S 01 32 30.314 -86 21 16.06 L C51
2010-09-27 12:46:40 S 01 29 57.701 -86 20 41.75 L C51
2010-09-27 14:21:50 S 01 27 26.206 -86 20 04.13 L C51
2010-09-27 14:22:01 S 01 27 25.690 -86 20 05.39 L C51
2010-09-27 15:57:11 S 01 24 55.116 -86 19 27.12 L C51
2010-09-27 17:32:21 S 01 22 24.888 -86 18 46.55 L C51
2010-09-27 19:07:42 S 01 19 55.150 -86 18 03.82 L C51
2010-09-27 20:42:52 S 01 17 25.908 -86 17 20.47 L C51
2010-09-27 22:18:02 S 01 14 58.183 -86 16 35.72 L C51
Radar Observations (11)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2004-05-01 23:42:00 74474126.77 2 us 2380 -1 -1
2004-05-02 21:44:00 77993481.53 2 us 2380 -1 -1
2004-05-02 21:44:00 -133764.851 2 Hz 2380 -1 -1
2016-10-27 07:40:00 66299207 4 us 8560 -14 -14
2016-10-28 07:00:00 55251316 2 us 8560 -14 -14
2016-10-28 08:28:00 54572031.44 1 us 2380 -1 -1
2016-10-29 10:30:00 43996004.17 1 us 8560 -14 -14
2016-10-31 05:40:00 34741188.135 1 us 8560 -14 -14
2023-11-01 05:30:00 66728692 10 us 8560 -14 -14
2023-11-01 06:10:00 66557486 2 us 8560 -14 -14
2023-11-07 05:10:00 77097307 1 us 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)