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
2017-05-05 07:47:29 S 23 05 29.76 -61 58 22.6 L C51
2017-05-05 09:21:45 S 23 05 58.22 -62 00 08.1 L C51
2017-05-05 10:56:00 S 23 06 26.83 -62 01 51.4 L C51
2017-05-05 14:04:41 S 23 07 24.21 -62 05 19.5 L C51
2017-05-05 15:38:56 S 23 07 52.901 -62 07 02.68 L C51
2017-05-05 17:13:11 S 23 08 21.45 -62 08 43.8 L C51
2017-05-05 18:47:26 S 23 08 50.03 -62 10 25.4 L C51
2017-05-05 20:21:52 S 23 09 18.833 -62 12 07.56 L C51
2017-05-05 21:56:07 S 23 09 47.63 -62 13 50.0 L C51
2017-05-05 23:30:22 S 23 10 16.43 -62 15 31.1 L C51
2017-05-06 01:04:37 S 23 10 45.19 -62 17 12.6 L C51
2017-05-06 05:47:33 S 23 12 11.750 -62 22 12.76 L C51
2017-05-06 07:21:48 S 23 12 40.49 -62 23 53.5 L C51
2017-05-06 08:56:14 S 23 13 09.55 -62 25 31.5 L C51
2017-05-06 13:38:59 S 23 14 36.34 -62 30 28.2 L C51
2017-05-06 15:13:25 S 23 15 05.33 -62 32 06.3 L C51
2017-05-06 16:47:40 S 23 15 34.29 -62 33 44.6 L C51
2017-05-06 18:21:55 S 23 16 03.40 -62 35 22.4 L C51
2017-05-06 21:30:36 S 23 17 01.53 -62 38 35.9 L C51
2017-05-07 00:39:06 S 23 17 59.762 -62 41 48.91 L C51
2017-05-07 03:47:47 S 23 18 57.998 -62 44 59.32 L C51
2017-05-07 06:56:17 S 23 19 56.393 -62 48 09.58 L C51
2017-05-07 10:04:58 S 23 20 54.924 -62 51 20.56 L C51
2017-05-07 16:22:10 S 23 22 52.142 -62 57 33.73 L C51
2017-05-07 19:30:40 S 23 23 50.592 -63 00 38.41 L C51
2017-10-18 10:08:39 C 21 10 46.41 -72 57 45.5 v Q62
2017-10-18 10:37:43 C 21 10 47.57 -72 56 47.6 v Q62
2017-11-22 06:00:32 C 21 57 44.57 -42 14 55.2 U T08
2017-11-22 06:10:28 C 21 57 45.11 -42 14 32.1 U T08
2017-11-22 06:20:21 C 21 57 45.61 -42 14 09.7 U T08
2017-11-22 06:30:16 C 21 57 46.19 -42 13 46.3 U T08
2017-12-16 01:31:51 C 22 29 22.80 -20 24 33.7 U 703
2017-12-16 01:39:35 C 22 29 23.18 -20 24 16.1 U 703
2017-12-16 01:47:19 C 22 29 23.61 -20 23 58.6 U 703
2017-12-16 01:55:03 C 22 29 24.01 -20 23 40.8 U 703
2018-01-06 05:37:52 C 22 55 46.28 -02 12 40.2 U T08
2018-01-06 05:48:00 C 22 55 46.82 -02 12 18.4 U T08
2018-01-06 05:56:57 C 22 55 47.20 -02 12 00.3 U T08
2018-01-06 06:06:27 C 22 55 47.71 -02 11 40.6 U T08
2018-01-14 05:32:10 C 23 05 09.99 +04 18 09.3 U T08
2018-01-14 05:46:05 C 23 05 10.63 +04 18 37.2 U T08
2018-01-14 05:56:59 C 23 05 11.16 +04 18 59.3 U T08
2018-01-14 06:07:01 C 23 05 11.63 +04 19 19.3 U T08
2018-01-16 05:23:58 C 23 07 27.35 +05 53 55.4 U T05
2018-01-16 05:38:11 C 23 07 28.04 +05 54 24.0 U T05
2018-01-16 05:52:27 C 23 07 28.66 +05 54 52.3 U T05
2018-01-16 06:06:36 C 23 07 29.31 +05 55 20.5 U T05
2018-01-18 05:10:10 C 23 09 43.11 +07 28 52.1 U T08
2018-01-18 05:25:15 C 23 09 43.78 +07 29 22.0 U T08
2018-01-18 05:30:16 C 23 09 44.02 +07 29 31.9 U T08
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)