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
2025-02-02 02:39:34 C 23 34 02.431 +15 43 10.67 V 703
2025-02-02 02:42:42 C 23 34 02.622 +15 43 17.04 V 703
2025-02-10 05:17:39 C 23 44 10.937 +21 49 07.00 V T08
2025-02-10 05:22:19 C 23 44 11.146 +21 49 15.56 V T08
2025-02-10 05:30:17 C 23 44 11.578 +21 49 30.36 V T08
2025-02-10 05:55:38 C 23 44 12.828 +21 50 17.30 V T08
2025-04-19 20:17:09 B 04 03 49.30 +66 59 55.0 X L99
2025-04-19 20:22:19 B 04 03 52.69 +66 59 54.9 X L99
2025-04-19 20:27:29 B 04 03 56.22 +66 59 56.0 X L99
2025-04-19 20:46:24 C 04 04 08.17 +66 59 58.7 V M32
2025-04-19 20:49:12 C 04 04 10.06 +66 59 58.9 V M32
2025-04-19 20:52:30 C 04 04 12.16 +66 59 59.7 V M32
2025-04-19 20:55:19 C 04 04 13.99 +66 59 59.1 V M32
2025-04-19 20:58:05 C 04 04 15.77 +66 59 59.7 V M32
2025-04-19 21:00:54 C 04 04 17.62 +66 59 59.8 V M32
2025-04-19 21:03:42 C 04 04 19.50 +66 59 59.5 V M32
2025-04-21 21:10:19 B 04 36 40.35 +66 51 27.4 X L99
2025-04-21 21:15:04 B 04 36 43.53 +66 51 24.3 X L99
2025-04-21 21:19:20 B 04 36 46.53 +66 51 21.9 X L99
2025-04-23 00:46:38 C 04 56 01.65 +66 32 47.3 V M32
2025-04-23 00:49:08 C 04 56 03.46 +66 32 45.5 V M32
2025-04-23 00:51:38 C 04 56 05.22 +66 32 43.3 V M32
2025-04-23 00:54:07 C 04 56 07.01 +66 32 41.1 V M32
2025-04-23 00:57:02 C 04 56 09.10 +66 32 38.4 V M32
2025-04-23 02:59:16 C 04 57 33.134 +66 31 08.72 V 703
2025-04-23 03:02:43 C 04 57 35.680 +66 31 05.20 V 703
2025-04-23 03:06:10 C 04 57 37.933 +66 31 02.14 V 703
2025-04-23 03:09:38 C 04 57 40.370 +66 30 59.18 V 703
2025-04-23 20:17:33 B 05 09 49.89 +66 13 06.2 X L99
2025-04-23 20:22:18 B 05 09 53.36 +66 13 01.2 X L99
2025-04-23 20:26:38 B 05 09 56.45 +66 12 54.6 X L99
2025-04-25 03:03:44 C 05 31 37.585 +65 30 05.80 V 703
2025-04-25 03:10:26 C 05 31 42.071 +65 29 52.22 V 703
2025-04-25 03:13:47 C 05 31 44.476 +65 29 47.62 V 703
2025-04-25 20:38:49 C 05 43 57.830 +64 58 25.28 Z C23
2025-04-25 21:10:35 C 05 44 19.973 +64 57 22.32 Z C23
2025-04-25 22:00:04 C 05 44 54.386 +64 55 42.56 Z C23
2025-04-26 21:11:51 C 06 00 51.149 +64 05 48.34 Z C23
2025-04-26 21:13:01 C 06 00 51.970 +64 05 45.35 Z C23
2025-04-26 21:51:19 C 06 01 17.921 +64 04 13.44 Z C23
2025-04-27 03:08:00 C 06 04 51.312 +63 51 44.64 V 703
2025-04-27 03:14:43 C 06 04 55.718 +63 51 28.40 V 703
2025-04-27 03:18:04 C 06 04 58.087 +63 51 19.22 V 703
2025-04-28 19:57:18 B 06 31 27.022 +61 57 47.45 X K87
2025-04-28 19:59:13 B 06 31 28.241 +61 57 41.40 X K87
2025-04-28 20:01:09 B 06 31 29.441 +61 57 35.03 X K87
2025-04-28 22:11:49 B 06 32 51.47 +61 50 32.5 X L99
2025-04-28 22:14:41 B 06 32 53.28 +61 50 23.1 X L99
2025-04-28 22:17:33 B 06 32 55.14 +61 50 14.8 X L99
2025-04-28 22:20:04 B 06 32 56.48 +61 50 09.0 X L99
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)