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
2016-08-31 16:03:18 S 04 57 58.10 -30 45 22.2 L C51
2016-08-31 19:11:59 S 04 58 08.03 -30 45 09.7 L C51
2016-08-31 20:46:14 S 04 58 13.01 -30 45 03.3 L C51
2016-08-31 22:20:40 S 04 58 17.945 -30 44 57.41 L C51
2016-08-31 23:54:55 S 04 58 23.04 -30 44 49.4 L C51
2016-09-01 01:29:21 S 04 58 27.87 -30 44 43.4 L C51
2016-09-01 03:03:36 S 04 58 32.79 -30 44 37.8 L C51
2016-09-01 04:37:51 S 04 58 37.67 -30 44 32.0 L C51
2016-09-01 04:38:02 S 04 58 37.69 -30 44 31.5 L C51
2016-09-01 06:12:17 S 04 58 42.689 -30 44 25.58 L C51
2016-09-01 07:46:32 S 04 58 47.602 -30 44 19.25 L C51
2016-09-01 07:46:43 S 04 58 47.626 -30 44 18.17 L C51
2016-09-01 17:12:35 S 04 59 16.96 -30 43 41.3 L C51
2016-09-01 20:21:16 S 04 59 26.85 -30 43 28.9 L C51
2016-09-01 23:29:58 S 04 59 36.451 -30 43 16.86 L C51
2016-09-06 07:37:43 C 05 04 51.28 -30 36 22.8 q Y00
2016-09-06 07:50:43 C 05 04 51.89 -30 36 21.7 q Y00
2016-09-06 08:04:05 C 05 04 52.49 -30 36 21.3 q Y00
2016-09-28 23:12:21 C 05 27 01.10 -29 31 03.3 o K95
2016-09-28 23:35:33 C 05 27 01.79 -29 30 58.5 o K95
2016-09-28 23:46:41 C 05 27 02.12 -29 30 56.2 o K95
2016-10-11 14:47:00 C 05 35 07.77 -27 13 52.1 15.6 t Q62
2016-10-11 14:53:47 C 05 35 07.86 -27 13 47.0 15.6 t Q62
2016-10-14 14:21:14 C 05 36 31.21 -26 05 04.2 L T05
2016-10-14 14:42:07 C 05 36 31.35 -26 04 39.9 L T05
2016-10-14 15:02:35 C 05 36 31.50 -26 04 16.0 L T05
2016-10-14 15:23:17 C 05 36 31.66 -26 03 51.7 L T05
2016-10-27 04:53:06 C 05 39 57.30 -04 02 53.1 q K74
2016-10-27 04:54:00 C 05 39 57.28 -04 02 39.6 q K74
2016-10-27 04:56:39 C 05 39 57.22 -04 01 59.8 q K74
2016-10-27 04:57:58 C 05 39 57.20 -04 01 39.6 q K74
2016-10-27 04:58:26 C 05 39 57.19 -04 01 32.9 q K74
2016-10-27 05:08:26 C 05 39 57.00 -03 59 02.1 q K74
2016-10-27 05:08:51 C 05 39 56.99 -03 58 55.5 q K74
2016-10-27 05:09:46 C 05 39 56.98 -03 58 42.0 q K74
2016-10-27 09:37:58 C 05 40 02.45 -02 48 30.7 q 703
2016-10-27 09:46:38 C 05 40 02.17 -02 46 11.0 q 703
2016-10-27 09:55:20 C 05 40 01.90 -02 43 51.2 q 703
2016-10-27 10:04:01 C 05 40 01.60 -02 41 29.7 q 703
2016-10-28 05:47:55 C 05 40 04.27 +03 33 01.2 q V83
2016-10-28 06:02:56 C 05 40 03.89 +03 38 34.8 q V83
2016-10-28 06:15:02 C 05 40 03.56 +03 43 04.4 q V83
2016-10-28 06:29:46 C 05 40 03.14 +03 48 34.1 q V83
2016-10-28 06:41:49 C 05 40 02.77 +03 53 03.6 q V83
2016-10-28 06:53:26 C 05 40 02.39 +03 57 25.2 q V83
2016-10-29 22:31:09 C 05 39 37.42 +24 55 34.9 q Z80
2016-10-29 22:33:43 C 05 39 37.33 +24 57 25.6 q Z80
2016-10-29 22:36:17 C 05 39 37.23 +24 59 16.3 q Z80
2016-10-29 22:38:51 C 05 39 37.13 +25 01 07.2 q Z80
2016-10-29 22:41:26 C 05 39 37.03 +25 02 58.1 q Z80
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)