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
2010-06-05 21:18:03 S 02 36 45.08 -64 12 13.6 L C51
2010-06-06 00:28:23 S 02 37 28.11 -64 12 11.6 L C51
2010-06-06 00:28:35 S 02 37 28.05 -64 12 12.2 L C51
2010-06-06 06:49:37 S 02 38 53.74 -64 12 08.5 L C51
2010-06-06 13:10:39 S 02 40 19.01 -64 12 05.0 L C51
2010-06-06 16:21:10 S 02 41 01.58 -64 12 02.4 L C51
2010-06-06 19:31:41 S 02 41 43.96 -64 11 59.8 L C51
2010-07-04 14:21:04 S 04 39 23.177 -64 10 27.30 L C51
2010-07-04 17:31:35 S 04 39 49.411 -64 10 44.87 L C51
2010-09-10 19:09:34 S 06 25 51.682 -80 28 09.37 L C51
2010-09-10 22:19:54 S 06 25 30.677 -80 31 50.16 L C51
2010-09-11 04:40:56 S 06 24 45.662 -80 39 15.44 L C51
2010-09-11 07:51:27 S 06 24 22.642 -80 42 58.32 L C51
2010-09-11 14:12:29 S 06 23 33.643 -80 50 24.65 L C51
2010-09-11 17:23:00 S 06 23 08.88 -80 54 07.9 L C51
2010-09-11 20:33:20 S 06 22 43.55 -80 57 52.7 L C51
2010-09-11 20:33:31 S 06 22 42.56 -80 57 52.6 L C51
2010-09-11 23:43:52 S 06 22 16.18 -81 01 36.4 L C51
2010-09-12 06:04:53 S 06 21 21.30 -81 09 05.4 L C51
2010-09-12 09:15:25 S 06 20 52.76 -81 12 50.0 L C51
2010-09-12 12:25:56 S 06 20 23.446 -81 16 35.40 L C51
2010-09-12 18:46:58 S 06 19 22.488 -81 24 05.29 L C51
2010-09-12 20:22:08 S 06 19 06.912 -81 25 57.83 L C51
2010-09-12 21:57:29 S 06 18 50.719 -81 27 50.69 L C51
2010-09-12 23:32:39 S 06 18 34.75 -81 29 44.2 L C51
2010-09-13 01:07:49 S 06 18 18.66 -81 31 36.3 L C51
2010-09-13 04:18:21 S 06 17 45.60 -81 35 23.0 L C51
2010-09-13 05:53:41 S 06 17 28.56 -81 37 13.8 L C51
2010-09-13 07:28:51 S 06 17 11.15 -81 39 09.6 L C51
2010-09-13 09:04:12 S 06 16 53.995 -81 41 01.32 L C51
2010-09-13 15:25:03 S 06 15 42.732 -81 48 33.59 L C51
2010-09-13 17:00:24 S 06 15 24.002 -81 50 27.24 L C51
2010-09-13 18:35:34 S 06 15 05.184 -81 52 20.06 L C51
2010-09-13 20:10:55 S 06 14 46.718 -81 54 13.03 L C51
2010-09-13 21:46:06 S 06 14 27.365 -81 56 06.90 L C51
2010-09-14 00:56:37 S 06 13 48.540 -81 59 53.27 L C51
2010-09-14 05:42:18 S 06 12 48.185 -82 05 32.96 L C51
2010-09-14 07:17:39 S 06 12 27.257 -82 07 25.82 L C51
2010-09-14 13:38:30 S 06 11 02.822 -82 14 59.96 L C51
2010-09-14 13:38:40 S 06 11 02.42 -82 14 58.8 L C51
2010-09-14 15:13:51 S 06 10 40.70 -82 16 53.3 L C51
2010-09-14 16:49:01 S 06 10 18.11 -82 18 46.0 L C51
2010-09-14 18:24:22 S 06 09 55.96 -82 20 39.8 L C51
2010-09-14 19:59:32 S 06 09 33.08 -82 22 32.9 L C51
2010-09-14 21:34:53 S 06 09 09.82 -82 24 26.2 L C51
2010-09-14 23:10:03 S 06 08 46.73 -82 26 19.3 L C51
2010-09-15 00:45:13 S 06 08 23.23 -82 28 13.2 L C51
2010-09-15 00:45:25 S 06 08 23.38 -82 28 13.4 L C51
2010-09-15 05:31:05 S 06 07 10.284 -82 33 52.70 L C51
2010-09-15 07:06:15 S 06 06 45.365 -82 35 46.79 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)