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
2025-06-02 17:38:27 C 10 02 39.802 -09 49 12.68 V M22
2025-06-02 18:02:14 C 10 02 41.923 -09 50 31.34 V M22
2025-06-02 18:27:57 C 10 02 44.215 -09 51 56.05 V M22
2025-06-04 05:52:43 C 10 05 57.098 -11 45 39.28 V T08
2025-06-04 05:57:20 C 10 05 57.506 -11 45 53.75 V T08
2025-06-04 06:05:17 C 10 05 58.181 -11 46 18.26 V T08
2025-06-04 06:21:55 C 10 05 59.597 -11 47 09.60 V T08
2025-06-04 23:44:13 C 10 07 31.942 -12 39 59.04 V W68
2025-06-04 23:48:49 C 10 07 32.354 -12 40 12.94 V W68
2025-06-04 23:58:50 C 10 07 33.173 -12 40 42.78 V W68
2025-06-05 00:31:23 C 10 07 35.892 -12 42 20.41 V W68
2025-06-05 19:07:24 C 10 09 12.626 -13 37 18.08 V M22
2025-06-05 19:12:01 C 10 09 12.998 -13 37 31.37 V M22
2025-06-05 19:20:48 C 10 09 13.726 -13 37 56.71 V M22
2025-06-05 19:38:52 C 10 09 15.245 -13 38 49.20 V M22
2025-06-06 18:43:07 C 10 11 13.246 -14 44 32.50 V M22
2025-06-06 18:46:23 C 10 11 13.490 -14 44 41.50 V M22
2025-06-06 18:51:01 C 10 11 13.898 -14 44 53.77 V M22
2025-06-06 19:01:28 C 10 11 14.748 -14 45 23.29 V M22
2025-06-08 05:55:56 C 10 14 08.832 -16 20 12.34 V T08
2025-06-08 06:00:35 C 10 14 09.204 -16 20 24.58 V T08
2025-06-08 06:08:31 C 10 14 09.838 -16 20 45.38 V T08
2025-06-08 06:23:05 C 10 14 10.975 -16 21 23.83 V T08
2025-06-11 00:45:32 C 10 19 29.796 -19 06 25.06 V W68
2025-06-11 00:51:32 C 10 19 30.250 -19 06 39.13 V W68
2025-06-11 01:32:07 C 10 19 33.312 -19 08 14.50 V W68
2025-06-12 19:07:10 C 10 22 46.397 -20 43 02.21 V M22
2025-06-12 19:11:44 C 10 22 46.738 -20 43 12.72 V M22
2025-06-12 19:20:19 C 10 22 47.383 -20 43 31.08 V M22
2025-06-12 19:38:56 C 10 22 48.780 -20 44 12.23 V M22
2025-06-13 18:42:19 C 10 24 34.094 -21 34 10.02 V M22
2025-06-13 18:47:34 C 10 24 34.478 -21 34 21.32 V M22
2025-06-13 18:56:49 C 10 24 35.158 -21 34 40.91 V M22
2025-06-13 19:25:47 C 10 24 37.284 -21 35 42.11 V M22
2025-06-16 18:18:43 C 10 29 54.278 -23 58 52.90 V M22
2025-06-16 18:38:13 C 10 29 55.663 -23 59 29.83 V M22
2025-06-16 19:10:36 C 10 29 57.967 -24 00 31.43 V M22
2025-06-16 19:11:15 C 10 29 57.989 -24 00 33.08 V M22
2025-06-18 23:22:16 C 10 33 46.716 -25 37 04.01 V W68
2025-06-18 23:43:47 C 10 33 48.202 -25 37 42.20 V W68
2025-06-19 00:01:30 C 10 33 49.430 -25 38 13.81 V W68
2025-06-19 16:46:57 C 10 35 02.364 -26 07 47.24 V M22
2025-06-19 16:53:17 C 10 35 02.796 -26 07 58.58 V M22
2025-06-19 16:59:33 C 10 35 03.221 -26 08 09.17 V M22
2025-06-19 17:00:12 C 10 35 03.271 -26 08 10.28 V M22
2025-06-21 17:38:47 C 10 38 32.878 -27 30 24.62 V M22
2025-06-21 17:46:48 C 10 38 33.434 -27 30 37.76 V M22
2025-06-21 17:50:49 C 10 38 33.727 -27 30 44.17 V M22
2025-06-21 17:51:28 C 10 38 33.754 -27 30 45.32 V M22
2025-06-21 18:07:18 C 10 38 34.834 -27 31 11.03 V M22
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)