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
2016-10-30 23:55:08 C 05 38 41.72 +46 08 15.8 q B92
2016-10-30 23:58:26 C 05 38 41.35 +46 11 21.5 q B92
2016-10-30 23:59:46 C 05 38 41.21 +46 12 35.9 q B92
2016-10-31 00:00:25 C 05 38 41.16 +46 13 13.2 q B92
2016-10-31 00:01:45 C 05 38 41.01 +46 14 27.5 q B92
2016-10-31 04:20:36 C 05 38 31.18 +50 18 09.5 q W34
2016-10-31 04:21:17 C 05 38 31.11 +50 18 48.6 q W34
2016-10-31 04:25:05 C 05 38 30.67 +50 22 27.1 q W34
2016-10-31 04:32:18 C 05 38 29.89 +50 29 21.6 q W34
2016-10-31 04:37:04 C 05 38 29.34 +50 33 56.1 q W34
2016-10-31 04:38:47 C 05 38 29.10 +50 35 35.8 q W34
2016-10-31 04:39:57 C 05 38 28.95 +50 36 41.7 q W34
2016-10-31 04:41:20 C 05 38 28.76 +50 38 03.0 q W34
2016-10-31 04:43:00 C 05 38 28.61 +50 39 37.7 q W34
2016-10-31 04:44:32 C 05 38 28.40 +50 41 06.9 q W34
2016-10-31 04:46:50 C 05 38 28.15 +50 43 18.5 q W34
2016-10-31 04:49:36 C 05 38 27.77 +50 45 58.9 q W34
2016-10-31 04:51:19 C 05 38 27.49 +50 47 37.6 q W34
2016-10-31 04:52:28 C 05 38 27.37 +50 48 43.1 q W34
2016-10-31 04:58:53 C 05 38 26.59 +50 54 51.9 q W34
2016-10-31 05:02:27 C 05 37 57.70 +50 57 43.9 q K74
2016-10-31 05:04:05 C 05 37 57.48 +50 59 16.7 q K74
2016-10-31 05:06:45 C 05 37 57.11 +51 01 48.0 q K74
2016-10-31 05:07:48 C 05 37 56.98 +51 02 47.2 q K74
2016-10-31 05:09:31 C 05 37 56.73 +51 04 24.5 q K74
2016-10-31 05:16:46 C 05 37 55.75 +51 11 14.9 q K74
2016-10-31 05:19:12 C 05 37 55.41 +51 13 32.8 q K74
2016-10-31 18:06:06 C 05 37 03.03 +63 19 02.9 o K85
2016-10-31 18:09:06 C 05 37 02.87 +63 21 52.6 o K85
2016-10-31 18:15:06 C 05 37 02.32 +63 27 32.0 o K85
2016-10-31 19:32:17 C 05 36 53.05 +64 39 54.9 U J69
2016-10-31 19:33:39 C 05 36 52.90 +64 41 11.8 U J69
2016-10-31 19:35:01 C 05 36 52.75 +64 42 28.5 U J69
2016-10-31 19:35:19 C 05 36 52.20 +64 42 47.8 t K05
2016-10-31 19:36:23 C 05 36 52.58 +64 43 45.3 U J69
2016-10-31 19:37:45 C 05 36 52.43 +64 45 02.1 U J69
2016-10-31 19:39:07 C 05 36 52.25 +64 46 19.0 U J69
2016-10-31 19:57:03 C 05 36 50.01 +65 03 07.8 U J69
2016-10-31 19:58:26 C 05 36 49.83 +65 04 24.6 U J69
2016-10-31 19:59:47 C 05 36 49.65 +65 05 41.2 U J69
2016-10-31 20:01:09 C 05 36 49.48 +65 06 57.7 U J69
2016-10-31 20:02:31 C 05 36 49.29 +65 08 14.3 U J69
2016-10-31 20:03:53 C 05 36 49.11 +65 09 30.8 U J69
2016-10-31 21:02:26 C 05 36 39.26 +66 04 10.2 t K05
2016-10-31 21:54:53 C 05 36 29.62 +66 52 46.0 q Z80
2016-10-31 21:57:07 C 05 36 29.16 +66 54 49.8 q Z80
2016-10-31 21:58:26 C 05 36 28.89 +66 56 03.2 q Z80
2016-10-31 22:10:55 C 05 36 25.39 +67 07 53.6 c 127
2016-10-31 22:12:21 C 05 36 25.09 +67 09 14.0 c 127
2016-10-31 22:19:05 C 05 36 23.48 +67 15 26.5 c 127
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)