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
2023-09-23 01:14:31 C 05 10 57.667 -37 07 28.88 V M22
2023-09-23 01:22:28 C 05 10 57.730 -37 07 31.19 V M22
2023-09-23 01:39:45 C 05 10 57.840 -37 07 35.76 V M22
2023-09-24 08:05:17 C 05 11 16.063 -37 15 23.00 V W68
2023-09-24 08:08:41 C 05 11 16.075 -37 15 23.94 V W68
2023-09-24 08:12:46 C 05 11 16.090 -37 15 25.02 V W68
2023-09-24 08:51:19 C 05 11 16.222 -37 15 35.68 V W68
2023-09-30 07:26:01 C 05 11 21.046 -37 55 35.65 V W68
2023-09-30 07:33:57 C 05 11 21.050 -37 55 38.75 V W68
2023-09-30 07:40:38 C 05 11 20.930 -37 55 41.66 V W68
2023-09-30 07:43:14 C 05 11 20.918 -37 55 42.38 V W68
2023-09-30 07:50:32 C 05 11 20.796 -37 55 44.54 V W68
2023-09-30 07:58:25 C 05 11 20.702 -37 55 47.10 V W68
2023-10-02 01:15:18 C 05 10 52.241 -38 08 36.46 V M22
2023-10-02 01:19:22 C 05 10 52.142 -38 08 37.86 V M22
2023-10-02 01:25:55 C 05 10 52.013 -38 08 40.06 V M22
2023-10-02 01:40:05 C 05 10 51.718 -38 08 44.70 V M22
2023-10-05 00:59:46 C 05 09 21.538 -38 32 27.74 V M22
2023-10-05 01:03:48 C 05 09 21.401 -38 32 29.29 V M22
2023-10-05 01:16:16 C 05 09 20.978 -38 32 33.90 V M22
2023-10-05 01:23:54 C 05 09 20.702 -38 32 36.71 V M22
2023-10-09 06:57:08 C 05 05 16.464 -39 10 11.78 V W68
2023-10-09 06:59:44 C 05 05 16.298 -39 10 12.94 V W68
2023-10-09 07:04:19 C 05 05 16.013 -39 10 14.84 V W68
2023-10-09 07:21:34 C 05 05 14.945 -39 10 21.94 V W68
2023-10-11 00:37:51 C 05 02 44.170 -39 27 01.55 V M22
2023-10-11 00:40:29 C 05 02 43.968 -39 27 02.74 V M22
2023-10-11 00:45:43 C 05 02 43.565 -39 27 05.04 V M22
2023-10-11 00:55:45 C 05 02 42.799 -39 27 09.40 V M22
2023-10-17 22:28:46 C 04 44 19.176 -40 42 28.80 V M22
2023-10-17 22:31:24 C 04 44 18.706 -40 42 30.31 V M22
2023-10-17 22:32:42 C 04 44 18.470 -40 42 31.00 V M22
2023-10-17 22:36:01 C 04 44 17.885 -40 42 32.87 V M22
2023-10-17 22:37:19 C 04 44 17.650 -40 42 33.52 V M22
2023-10-17 23:12:36 C 04 44 11.318 -40 42 52.96 V M22
2023-10-17 23:13:15 C 04 44 11.198 -40 42 53.21 V M22
2023-10-17 23:18:00 C 04 44 10.342 -40 42 55.80 V M22
2023-10-26 00:23:17 C 03 39 49.277 -41 47 59.68 V M22
2023-10-26 01:05:51 C 03 39 22.342 -41 47 47.87 V M22
2023-10-26 01:42:55 C 03 39 04.94 -41 47 21.9 834
2023-10-26 01:47:29 C 03 38 55.901 -41 47 34.55 V M22
2023-10-26 02:16:49 C 03 38 43.54 -41 47 17.2 834
2023-10-26 02:24:22 C 03 38 32.434 -41 47 21.41 V M22
2023-10-26 22:28:02 C 03 25 11.426 -41 38 09.53 V M22
2023-10-26 22:30:43 C 03 25 09.415 -41 38 07.80 V M22
2023-10-26 23:21:51 C 03 24 31.027 -41 37 34.36 V M22
2023-10-26 23:45:45 C 03 24 12.974 -41 37 17.62 V M22
2023-10-28 06:10:57 C 02 58 59.491 -41 01 09.16 V W68
2023-10-28 06:15:36 C 02 58 55.015 -41 01 00.66 V W68
2023-10-28 06:55:50 C 02 58 16.202 -40 59 45.85 V W68
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)