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
2024-03-31 03:21:20 C 19 50 48.156 -34 13 37.81 V M22
2024-03-31 03:39:35 C 19 50 50.657 -34 14 22.42 V M22
2024-04-01 08:16:26 C 19 54 53.261 -35 23 58.74 V W68
2024-04-01 08:21:03 C 19 54 53.940 -35 24 10.33 V W68
2024-04-01 09:05:06 C 19 55 00.142 -35 25 57.79 V W68
2024-04-01 09:34:45 C 19 55 04.272 -35 27 11.23 V W68
2024-04-02 01:56:59 C 19 57 26.270 -36 06 59.98 V M22
2024-04-02 02:18:45 C 19 57 29.395 -36 07 53.72 V M22
2024-04-02 03:19:47 C 19 57 38.078 -36 10 23.70 V M22
2024-04-04 08:23:06 C 20 05 33.809 -38 19 29.60 V W68
2024-04-04 08:25:04 C 20 05 34.097 -38 19 34.32 V W68
2024-04-04 08:42:06 C 20 05 36.667 -38 20 16.15 V W68
2024-04-04 08:54:08 C 20 05 38.484 -38 20 45.89 V W68
2024-04-04 09:02:08 C 20 05 39.682 -38 21 05.40 V W68
2024-04-04 09:22:05 C 20 05 42.655 -38 21 54.32 V W68
2024-04-07 06:10:52 C 20 16 37.721 -41 08 35.38 V W68
2024-04-07 06:28:58 C 20 16 40.709 -41 09 19.94 V W68
2024-04-07 06:47:03 C 20 16 43.656 -41 10 04.22 V W68
2024-04-10 09:30:44 C 20 29 26.988 -44 09 19.26 V W68
2024-04-10 09:43:13 C 20 29 29.143 -44 09 49.25 V W68
2024-04-10 09:52:01 C 20 29 30.677 -44 10 10.20 V W68
2024-04-10 20:03:34 C 20 31 19.33 -44 34 21.4 u 323
2024-04-10 20:21:03 C 20 31 22.81 -44 35 02.3 u 323
2024-04-11 20:20:55 C 20 35 43.34 -45 31 44.0 u 323
2024-04-11 20:36:21 C 20 35 46.17 -45 32 22.2 u 323
2024-04-13 03:08:21 C 20 41 27.379 -46 43 55.63 V M22
2024-04-13 03:28:27 C 20 41 31.102 -46 44 42.94 V M22
2024-04-13 03:46:29 C 20 41 34.450 -46 45 25.56 V M22
2024-04-13 20:05:44 C 20 44 41.81 -47 23 18.8 u 323
2024-04-13 20:20:37 C 20 44 44.81 -47 23 53.7 u 323
2024-04-14 20:02:42 C 20 49 22.21 -48 18 30.5 u 323
2024-04-14 20:17:11 C 20 49 25.00 -48 19 03.9 u 323
2024-04-16 20:02:30 C 20 59 06.09 -50 07 21.8 u 323
2024-04-16 20:17:43 C 20 59 09.31 -50 07 56.8 u 323
2024-04-18 02:01:14 C 21 05 26.587 -51 13 59.66 V M22
2024-04-18 02:26:18 C 21 05 31.930 -51 14 56.00 V M22
2024-04-18 02:30:54 C 21 05 32.878 -51 15 06.08 V M22
2024-04-18 02:44:09 C 21 05 35.695 -51 15 35.82 V M22
2024-04-20 07:22:22 C 21 17 15.235 -53 09 37.08 V W68
2024-04-20 08:05:04 C 21 17 24.862 -53 11 09.46 V W68
2024-04-20 08:40:23 C 21 17 32.806 -53 12 25.63 V W68
2024-04-20 08:44:59 C 21 17 33.847 -53 12 35.78 V W68
2024-04-25 05:54:18 S 21 46 04.70 -57 10 23.7 L C51
2024-04-25 08:59:20 S 21 46 52.78 -57 16 19.1 L C51
2024-04-25 12:04:10 S 21 47 40.94 -57 22 12.9 L C51
2024-04-25 15:08:48 S 21 48 29.09 -57 28 05.3 L C51
2024-04-25 16:41:25 S 21 48 53.50 -57 31 02.3 L C51
2024-04-25 18:13:50 S 21 49 17.73 -57 33 58.4 L C51
2024-04-25 19:46:15 S 21 49 42.08 -57 36 52.9 L C51
2024-04-25 22:51:04 S 21 50 30.73 -57 42 43.6 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)