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
2004-05-01 02:17:57 C 08 43 11.29 +36 43 26.5 r H41
2004-05-01 03:22:07 C 08 43 40.00 +36 14 27.1 d 703
2004-05-01 03:37:03 C 08 43 46.16 +36 07 39.0 d 703
2004-05-01 03:51:57 C 08 43 52.24 +36 00 50.3 d 703
2004-05-01 04:07:00 C 08 43 58.48 +35 54 00.4 d 703
2004-05-01 19:47:02 C 08 50 16.49 +28 51 04.4 13.7 r 130
2004-05-01 19:48:10 C 08 50 16.88 +28 50 34.6 13.8 r 130
2004-05-01 19:49:16 C 08 50 17.25 +28 50 05.0 13.7 r 130
2004-05-01 19:50:21 C 08 50 17.63 +28 49 35.6 13.8 r 130
2004-05-01 19:51:29 C 08 50 18.02 +28 49 05.9 13.7 r 130
2004-05-01 22:19:58 C 08 51 10.64 +27 42 42.5 o 084
2004-05-01 22:20:47 C 08 51 10.97 +27 42 20.4 o 084
2004-05-01 22:21:36 C 08 51 11.24 +27 41 58.9 o 084
2004-05-01 22:22:26 C 08 51 11.55 +27 41 36.8 o 084
2004-05-01 22:23:15 C 08 51 11.84 +27 41 15.3 o 084
2004-05-01 22:24:04 C 08 51 12.12 +27 40 53.0 o 084
2004-05-01 22:24:54 C 08 51 12.44 +27 40 31.4 o 084
2004-05-01 22:25:43 C 08 51 12.73 +27 40 09.5 o 084
2004-05-01 22:26:32 C 08 51 13.02 +27 39 47.5 o 084
2004-05-01 22:27:22 C 08 51 13.30 +27 39 25.9 o 084
2004-05-01 22:28:11 C 08 51 13.61 +27 39 04.0 o 084
2004-05-01 22:29:01 C 08 51 13.91 +27 38 42.5 o 084
2004-05-01 22:29:50 C 08 51 14.17 +27 38 20.1 o 084
2004-05-01 22:30:40 C 08 51 14.51 +27 37 58.7 o 084
2004-05-01 22:31:29 C 08 51 14.79 +27 37 36.8 o 084
2004-05-01 22:33:07 C 08 51 15.38 +27 36 53.3 o 084
2004-05-05 01:50:49 C 09 10 10.68 +00 03 55.9 r H41
2004-05-05 01:51:36 C 09 10 10.78 +00 03 42.3 r H41
2004-05-05 01:53:11 C 09 10 11.04 +00 03 16.0 r H41
2004-05-05 01:54:09 C 09 10 11.19 +00 02 59.4 r H41
2004-05-05 01:55:03 C 09 10 11.33 +00 02 44.0 r H41
2004-05-05 01:55:59 C 09 10 11.48 +00 02 28.5 r H41
2004-05-05 01:56:54 C 09 10 11.62 +00 02 13.2 r H41
2004-05-05 02:00:49 C 09 10 12.23 +00 01 07.1 r H41
2004-05-05 03:45:26 C 09 10 29.97 -00 27 58.6 c 926
2004-05-05 03:45:52 C 09 10 30.04 -00 28 06.0 c 926
2004-05-05 03:46:21 C 09 10 30.10 -00 28 13.6 c 926
2004-05-06 02:02:30 C 09 14 07.06 -06 07 35.7 r H41
2004-05-06 02:14:44 C 09 14 08.65 -06 10 25.7 r H41
2004-05-06 02:25:16 C 09 14 10.03 -06 12 51.9 r H41
2004-05-06 02:26:55 C 09 14 10.24 -06 13 14.8 r H41
2004-05-06 02:27:58 C 09 14 10.38 -06 13 29.1 r H41
2004-05-06 02:28:57 C 09 14 10.52 -06 13 42.8 r H41
2004-05-06 02:30:16 C 09 14 10.69 -06 14 00.7 r H41
2004-05-06 11:08:57 C 09 15 24.867 -08 08 22.19 r 413
2004-05-06 11:14:24 C 09 15 25.551 -08 09 32.60 r 413
2004-05-06 11:19:55 C 09 15 26.240 -08 10 43.54 r 413
2004-05-06 19:38:49 C 09 16 35.81 -09 56 21.7 r A30
2004-05-06 19:39:06 C 09 16 35.77 -09 56 24.5 r A30
2004-05-06 19:39:57 C 09 16 35.96 -09 56 35.5 r A30
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)