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
2025-05-13 21:38:25 C 08 55 59.25 +29 46 05.6 V M32
2025-05-13 21:38:57 C 08 55 59.37 +29 46 01.9 V M32
2025-05-13 21:39:29 C 08 55 59.49 +29 45 58.0 V M32
2025-05-13 21:42:40 C 08 56 00.20 +29 45 36.9 V M32
2025-05-13 21:42:54 C 08 56 00.21 +29 45 36.7 V M32
2025-05-13 21:43:43 C 08 56 00.36 +29 45 30.4 V M32
2025-05-14 06:30:54 C 08 57 58.080 +28 49 29.35 V T05
2025-05-14 06:35:42 C 08 57 59.098 +28 48 58.10 V T05
2025-05-14 07:21:22 C 08 58 08.899 +28 44 04.09 V T05
2025-05-15 04:55:31 C 09 02 45.359 +26 26 23.96 V 703
2025-05-15 04:58:52 C 09 02 46.036 +26 26 02.47 V 703
2025-05-15 05:02:14 C 09 02 46.712 +26 25 41.09 V 703
2025-05-15 05:05:35 C 09 02 47.382 +26 25 19.60 V 703
2025-05-15 20:59:42 C 09 06 01.848 +24 44 51.43 V R17
2025-05-15 21:20:21 C 09 06 05.854 +24 42 40.75 V R17
2025-05-15 21:40:52 C 09 06 09.821 +24 40 31.19 V R17
2025-05-15 22:01:23 C 09 06 13.800 +24 38 21.41 V R17
2025-05-16 04:00:59 C 09 07 24.841 +24 00 42.08 V 703
2025-05-16 04:04:13 C 09 07 25.464 +24 00 21.53 V 703
2025-05-16 04:07:27 C 09 07 26.072 +24 00 01.40 V 703
2025-05-16 04:10:42 C 09 07 26.692 +23 59 40.70 V 703
2025-05-16 06:05:58 C 09 07 49.430 +23 47 46.07 V T08
2025-05-16 06:10:38 C 09 07 50.297 +23 47 16.94 V T08
2025-05-16 06:18:48 C 09 07 51.852 +23 46 25.43 V T08
2025-05-16 06:32:51 C 09 07 54.485 +23 44 57.12 V T08
2025-05-17 04:57:33 C 09 12 08.579 +21 25 43.10 V 703
2025-05-17 05:00:51 C 09 12 09.158 +21 25 22.48 V 703
2025-05-17 05:04:07 C 09 12 09.778 +21 25 02.57 V 703
2025-05-17 05:07:23 C 09 12 10.346 +21 24 42.05 V 703
2025-05-17 16:50:24 B 09 14 18.058 +20 13 04.44 W M73
2025-05-17 17:17:24 B 09 14 22.704 +20 10 19.42 W M73
2025-05-17 20:36:46 C 09 14 58.610 +19 49 57.68 Z C23
2025-05-17 21:19:55 C 09 15 06.098 +19 45 35.21 Z C23
2025-05-18 05:11:14 C 09 16 28.348 +18 58 14.05 V 703
2025-05-18 05:14:30 C 09 16 28.916 +18 57 54.29 V 703
2025-05-18 05:17:46 C 09 16 29.474 +18 57 34.78 V 703
2025-05-18 05:21:02 C 09 16 30.007 +18 57 14.83 V 703
2025-05-18 06:20:42 C 09 16 40.788 +18 51 24.01 V T05
2025-05-18 06:25:22 C 09 16 41.551 +18 50 55.61 V T05
2025-05-18 06:34:01 C 09 16 43.015 +18 50 03.44 V T05
2025-05-18 07:03:50 C 09 16 47.995 +18 47 03.77 V T05
2025-05-18 21:01:58 C 09 19 10.867 +17 23 43.15 V R17
2025-05-18 21:22:30 C 09 19 14.184 +17 21 41.18 V R17
2025-05-18 21:43:04 C 09 19 17.530 +17 19 39.00 V R17
2025-05-18 22:03:35 C 09 19 20.866 +17 17 37.46 V R17
2025-05-19 06:43:46 C 09 20 46.994 +16 26 40.34 V T05
2025-05-19 06:48:19 C 09 20 47.714 +16 26 13.56 V T05
2025-05-19 07:16:07 C 09 20 52.142 +16 23 30.23 V T05
2025-05-19 07:24:01 C 09 20 53.383 +16 22 43.68 V T05
2025-05-19 20:56:45 C 09 23 04.646 +15 03 54.47 Z C23
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)