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
2010-05-21 14:31:33 S 01 04 18.36 -63 33 23.3 L C51
2010-05-21 16:06:43 S 01 04 44.54 -63 33 49.1 L C51
2010-05-21 17:42:04 S 01 05 10.74 -63 34 14.1 L C51
2010-05-21 19:17:14 S 01 05 36.79 -63 34 39.9 L C51
2010-05-21 20:52:35 S 01 06 02.86 -63 35 05.3 L C51
2010-05-21 22:27:45 S 01 06 29.04 -63 35 29.9 L C51
2010-05-22 00:03:06 S 01 06 55.14 -63 35 54.9 L C51
2010-05-22 01:38:16 S 01 07 21.20 -63 36 19.8 L C51
2010-05-22 01:38:27 S 01 07 21.17 -63 36 19.7 L C51
2010-05-22 06:24:08 S 01 08 39.32 -63 37 32.5 L C51
2010-05-22 07:59:29 S 01 09 05.34 -63 37 56.2 L C51
2010-05-22 14:20:31 S 01 10 49.32 -63 39 30.5 L C51
2010-05-22 15:55:41 S 01 11 15.24 -63 39 53.8 L C51
2010-05-22 15:55:52 S 01 11 15.29 -63 39 53.8 L C51
2010-05-22 17:31:02 S 01 11 41.18 -63 40 16.5 L C51
2010-05-22 19:06:23 S 01 12 07.07 -63 40 39.4 L C51
2010-05-22 20:41:33 S 01 12 32.95 -63 41 02.0 L C51
2010-05-22 22:16:54 S 01 12 58.88 -63 41 24.2 L C51
2010-05-22 23:52:04 S 01 13 24.70 -63 41 46.7 L C51
2010-05-23 04:37:57 S 01 14 42.266 -63 42 52.20 L C51
2010-05-23 06:13:07 S 01 15 08.03 -63 43 14.0 L C51
2010-05-23 06:13:18 S 01 15 08.05 -63 43 13.7 L C51
2010-05-23 07:48:28 S 01 15 33.78 -63 43 35.6 L C51
2010-05-23 09:23:49 S 01 15 59.61 -63 43 56.7 L C51
2010-05-23 12:34:20 S 01 16 51.14 -63 44 38.5 L C51
2010-05-23 14:09:30 S 01 17 16.78 -63 44 58.9 L C51
2010-05-23 15:44:51 S 01 17 42.51 -63 45 20.0 L C51
2010-05-23 17:20:01 S 01 18 08.20 -63 45 39.9 L C51
2010-05-23 18:55:22 S 01 18 33.85 -63 46 00.5 L C51
2010-05-23 20:30:32 S 01 18 59.55 -63 46 20.6 L C51
2010-05-23 22:05:53 S 01 19 25.19 -63 46 40.8 L C51
2010-05-23 23:41:03 S 01 19 50.81 -63 47 00.5 L C51
2010-05-23 23:41:14 S 01 19 50.83 -63 47 00.5 L C51
2010-05-24 07:37:26 S 01 21 58.71 -63 48 36.3 L C51
2010-05-24 13:58:28 S 01 23 40.625 -63 49 51.60 L C51
2010-05-24 17:08:59 S 01 24 31.55 -63 50 27.5 L C51
2010-05-24 17:09:10 S 01 24 31.54 -63 50 27.4 L C51
2010-05-24 20:19:41 S 01 25 22.38 -63 51 02.9 L C51
2010-05-24 23:30:12 S 01 26 13.07 -63 51 38.3 L C51
2010-05-25 05:51:15 S 01 27 54.41 -63 52 46.4 L C51
2010-05-25 09:01:46 S 01 28 44.89 -63 53 20.0 L C51
2010-05-25 12:12:17 S 01 29 35.34 -63 53 52.5 L C51
2010-05-25 15:22:48 S 01 30 25.68 -63 54 24.9 L C51
2010-05-25 18:33:19 S 01 31 16.042 -63 54 56.20 L C51
2010-05-25 21:43:50 S 01 32 06.322 -63 55 27.44 L C51
2010-06-05 05:25:17 S 02 33 08.813 -64 12 17.78 L C51
2010-06-05 08:35:48 S 02 33 52.267 -64 12 16.81 L C51
2010-06-05 14:56:50 S 02 35 18.898 -64 12 15.88 L C51
2010-06-05 18:07:21 S 02 36 02.004 -64 12 14.69 L C51
2010-06-05 21:17:53 S 02 36 45.13 -64 12 13.7 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)