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
2024-04-26 00:23:30 S 21 50 55.22 -57 45 38.2 L C51
2024-04-26 01:55:55 S 21 51 19.76 -57 48 32.3 L C51
2024-04-26 01:56:06 S 21 51 19.81 -57 48 32.5 L C51
2024-04-26 03:28:20 S 21 51 44.23 -57 51 26.9 L C51
2024-04-26 05:00:55 S 21 52 08.93 -57 54 20.7 L C51
2024-04-26 06:33:21 S 21 52 33.43 -57 57 13.6 L C51
2024-04-26 08:05:46 S 21 52 58.09 -58 00 06.4 L C51
2024-04-26 12:43:01 S 21 54 12.42 -58 08 45.2 L C51
2024-04-26 14:15:25 S 21 54 37.17 -58 11 37.3 L C51
2024-04-26 15:47:51 S 21 55 01.93 -58 14 28.5 L C51
2024-04-26 17:20:27 S 21 55 26.95 -58 17 19.7 L C51
2024-04-26 18:52:41 S 21 55 51.78 -58 20 11.2 L C51
2024-04-26 18:52:52 S 21 55 51.85 -58 20 11.4 L C51
2024-04-26 20:25:17 S 21 56 16.83 -58 23 02.1 L C51
2024-04-26 23:30:07 S 21 57 06.85 -58 28 43.3 L C51
2024-04-27 02:34:57 S 21 57 57.13 -58 34 22.6 L C51
2024-04-27 05:39:47 S 21 58 47.49 -58 40 01.5 L C51
2024-04-27 08:44:37 S 21 59 38.11 -58 45 38.3 L C51
2024-04-28 08:18:13 C 22 06 11.345 -59 27 57.71 V W68
2024-04-28 08:22:49 C 22 06 12.598 -59 28 05.92 V W68
2024-04-28 08:44:50 C 22 06 18.737 -59 28 45.44 V W68
2024-04-28 08:54:45 C 22 06 21.458 -59 29 03.88 V W68
2024-05-02 07:54:30 C 22 34 22.814 -62 06 42.80 V W68
2024-05-02 08:15:22 C 22 34 29.191 -62 07 16.00 V W68
2024-05-02 08:36:27 C 22 34 35.638 -62 07 49.15 V W68
2024-05-02 08:41:03 C 22 34 37.061 -62 07 56.53 V W68
2024-05-02 10:25:55 S 22 35 08.30 -62 10 36.4 L C51
2024-05-02 10:26:05 S 22 35 08.28 -62 10 37.1 L C51
2024-05-02 13:30:34 S 22 36 05.68 -62 15 20.4 L C51
2024-05-02 13:30:44 S 22 36 05.80 -62 15 20.9 L C51
2024-05-02 16:35:24 S 22 37 03.01 -62 20 03.1 L C51
2024-05-02 18:07:49 S 22 37 31.79 -62 22 23.5 L C51
2024-05-02 19:40:14 S 22 38 00.62 -62 24 43.9 L C51
2024-05-02 21:12:39 S 22 38 29.47 -62 27 03.6 L C51
2024-05-03 01:49:54 S 22 39 56.27 -62 34 02.0 L C51
2024-05-06 09:04:35 C 23 05 42.725 -64 25 04.69 V W68
2024-05-06 09:09:16 C 23 05 44.251 -64 25 10.74 V W68
2024-05-06 09:39:53 C 23 05 54.365 -64 25 51.46 V W68
2024-05-06 09:56:54 C 23 05 59.995 -64 26 13.88 V W68
2024-05-12 02:27:40 C 23 53 58.104 -66 57 43.02 V M22
2024-05-12 02:42:04 C 23 54 03.216 -66 57 56.52 V M22
2024-05-12 02:46:06 C 23 54 04.714 -66 58 00.52 V M22
2024-05-12 02:56:12 C 23 54 08.388 -66 58 09.95 V M22
2024-05-16 03:27:03 C 00 29 51.478 -68 14 41.24 V M22
2024-05-16 03:34:59 C 00 29 54.331 -68 14 46.93 V M22
2024-05-16 03:55:15 C 00 30 01.913 -68 15 01.01 V M22
2024-05-16 04:02:39 C 00 30 04.589 -68 15 06.41 V M22
2024-05-18 09:52:09 C 00 50 14.088 -68 47 08.16 V W68
2024-05-18 09:58:17 C 00 50 16.318 -68 47 12.41 V W68
2024-05-18 10:08:58 C 00 50 20.299 -68 47 17.88 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)