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
2025-06-21 18:11:13 C 10 38 35.122 -27 31 17.11 V M22
2025-06-21 18:22:28 C 10 38 35.882 -27 31 35.58 V M22
2025-06-21 18:26:25 C 10 38 36.168 -27 31 41.74 V M22
2025-06-22 16:58:21 C 10 40 13.063 -28 08 07.76 V M22
2025-06-22 17:09:42 C 10 40 13.846 -28 08 25.73 V M22
2025-06-22 17:13:02 C 10 40 14.064 -28 08 31.02 V M22
2025-06-22 17:24:59 C 10 40 14.890 -28 08 50.03 V M22
2025-06-22 17:25:38 C 10 40 14.921 -28 08 51.00 V M22
2025-06-22 17:26:17 C 10 40 14.981 -28 08 52.08 V M22
2025-06-23 08:47:45 V 10 41 20.78 -28 33 07.8 q 247
2025-06-23 08:47:45 v 1 151.5140 -30.5198 247
2025-06-23 08:52:55 V 10 41 21.13 -28 33 15.8 q 247
2025-06-23 08:52:55 v 1 151.5140 -30.5198 247
2025-06-23 08:58:05 V 10 41 21.48 -28 33 24.0 q 247
2025-06-23 08:58:05 v 1 151.5140 -30.5198 247
2025-06-24 17:51:02 C 10 43 41.938 -29 23 51.43 V M22
2025-06-24 17:55:40 C 10 43 42.286 -29 23 58.81 V M22
2025-06-24 18:07:09 C 10 43 43.063 -29 24 15.44 V M22
2025-06-24 18:23:19 C 10 43 44.141 -29 24 39.89 V M22
2025-06-27 00:04:24 C 10 47 33.338 -30 43 10.34 V W68
2025-06-27 00:10:23 C 10 47 33.744 -30 43 18.62 V W68
2025-06-27 00:18:20 C 10 47 34.279 -30 43 29.89 V W68
2025-06-27 00:41:38 C 10 47 35.894 -30 44 02.47 V W68
2025-06-27 01:57:39 C 10 47 41.194 -30 45 48.96 V W68
2025-06-29 17:59:59 C 10 52 15.041 -32 13 44.51 V M22
2025-06-29 18:03:54 C 10 52 15.305 -32 13 50.20 V M22
2025-06-29 18:11:47 C 10 52 15.866 -32 14 00.35 V M22
2025-06-29 18:27:51 C 10 52 16.970 -32 14 21.34 V M22
2025-07-01 23:46:42 C 10 56 05.882 -33 23 29.69 V W68
2025-07-01 23:52:00 C 10 56 06.245 -33 23 35.74 V W68
2025-07-02 00:01:18 C 10 56 06.871 -33 23 47.51 V W68
2025-07-02 00:31:43 C 10 56 08.974 -33 24 24.84 V W68
2025-07-02 00:32:22 C 10 56 09.050 -33 24 26.57 V W68
2025-07-07 17:27:22 C 11 06 04.495 -36 07 56.78 V M22
2025-07-07 17:36:32 C 11 06 05.141 -36 08 06.72 V M22
2025-07-07 17:51:35 C 11 06 06.139 -36 08 24.11 V M22
2025-07-07 17:52:54 C 11 06 06.545 -36 08 23.78 V M22
2025-07-07 17:57:28 C 11 06 06.634 -36 08 29.83 V M22
2025-07-09 23:42:00 C 11 10 04.685 -37 08 04.49 V W68
2025-07-09 23:47:21 C 11 10 05.141 -37 08 10.32 V W68
2025-07-09 23:55:25 C 11 10 05.618 -37 08 19.32 V W68
2025-07-10 00:10:33 C 11 10 06.734 -37 08 35.59 V W68
2025-07-13 00:12:39 C 11 15 30.761 -38 25 03.72 V W68
2025-07-13 00:17:14 C 11 15 31.118 -38 25 08.47 V W68
2025-07-13 00:26:27 C 11 15 31.812 -38 25 17.90 V W68
2025-07-13 00:53:35 C 11 15 33.797 -38 25 45.30 V W68
2025-07-14 17:33:17 C 11 18 39.847 -39 07 25.90 V M22
2025-07-14 17:37:52 C 11 18 40.135 -39 07 30.22 V M22
2025-07-14 17:46:38 C 11 18 40.850 -39 07 38.71 V M22
2025-07-14 18:04:37 C 11 18 42.163 -39 07 56.24 V M22
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)