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
2011-05-05 01:31:59 C 08 35 39.29 +38 24 17.6 c H78
2011-05-05 01:32:44 C 08 35 39.53 +38 24 08.4 c H78
2011-05-05 01:36:25 C 08 35 40.72 +38 23 22.9 c H78
2011-05-05 01:37:10 C 08 35 40.97 +38 23 14.3 c H78
2011-05-05 01:37:56 C 08 35 41.22 +38 23 05.2 c H78
2011-05-05 01:38:40 C 08 35 41.48 +38 22 56.1 c H78
2011-05-05 01:39:26 C 08 35 41.76 +38 22 46.5 c H78
2011-05-05 01:40:10 C 08 35 41.99 +38 22 37.0 c H78
2011-05-05 01:40:54 C 08 35 42.21 +38 22 28.5 c H78
2011-05-05 01:41:38 C 08 35 42.44 +38 22 19.1 c H78
2011-05-05 18:36:24 C 08 41 15.72 +34 55 59.8 15.6 c 583
2011-05-05 18:37:50 C 08 41 16.13 +34 55 42.0 15.9 c 583
2011-05-05 18:38:12 C 08 41 16.26 +34 55 37.7 15.8 c 583
2011-05-05 18:39:20 C 08 41 16.59 +34 55 23.7 15.5 c 583
2011-05-05 18:40:21 C 08 41 16.90 +34 55 11.2 15.5 c 583
2011-05-05 18:41:30 C 08 41 17.25 +34 54 57.0 15.5 c 583
2011-05-05 19:09:16 C 08 41 25.69 +34 49 17.1 15.2 c 583
2011-05-05 19:10:07 C 08 41 25.94 +34 49 06.8 15.2 c 583
2011-05-05 19:10:56 C 08 41 26.20 +34 48 56.8 15.3 c 583
2011-05-05 19:12:03 C 08 41 26.53 +34 48 43.1 15.2 c 583
2011-05-05 19:13:02 C 08 41 26.82 +34 48 31.1 15.2 c 583
2011-05-05 19:14:10 C 08 41 27.17 +34 48 17.2 14.8 c 583
2011-05-05 23:41:21 C 08 42 50.99 +33 54 50.5 c H78
2011-05-05 23:43:31 C 08 42 51.60 +33 54 24.7 c H78
2011-05-05 23:44:15 C 08 42 51.76 +33 54 15.9 c H78
2011-05-05 23:45:00 C 08 42 51.98 +33 54 06.8 c H78
2011-05-05 23:45:43 C 08 42 52.24 +33 53 57.8 c H78
2011-05-05 23:46:27 C 08 42 52.42 +33 53 49.1 c H78
2011-05-05 23:47:11 C 08 42 52.63 +33 53 39.6 c H78
2011-05-05 23:47:55 C 08 42 52.85 +33 53 30.8 c H78
2011-05-05 23:48:39 C 08 42 53.04 +33 53 21.7 c H78
2011-05-05 23:49:22 C 08 42 53.25 +33 53 12.6 c H78
2011-05-05 23:51:33 C 08 42 53.83 +33 52 46.4 c H78
2011-05-05 23:53:01 C 08 42 54.29 +33 52 28.5 c H78
2011-05-05 23:54:29 C 08 42 54.69 +33 52 10.7 c H78
2011-05-05 23:55:14 C 08 42 54.94 +33 52 02.2 c H78
2011-05-05 23:55:58 C 08 42 55.12 +33 51 52.5 c H78
2011-05-05 23:59:37 C 08 42 56.17 +33 51 08.2 c H78
2011-05-06 00:01:04 C 08 42 56.61 +33 50 49.9 c H78
2011-05-06 00:04:02 C 08 42 57.46 +33 50 14.5 c H78
2011-05-06 00:06:15 C 08 42 58.08 +33 49 46.9 c H78
2011-05-06 00:06:59 C 08 42 58.27 +33 49 38.3 c H78
2011-05-06 00:07:43 C 08 42 58.49 +33 49 29.0 c H78
2011-05-06 00:09:29 C 08 42 58.99 +33 49 07.8 c H78
2011-05-06 00:10:12 C 08 42 59.22 +33 48 59.4 c H78
2011-05-06 00:10:55 C 08 42 59.38 +33 48 50.1 c H78
2011-05-06 00:11:40 C 08 42 59.62 +33 48 41.3 c H78
2011-05-06 00:12:23 C 08 42 59.85 +33 48 32.4 c H78
2011-05-06 00:13:07 C 08 43 00.07 +33 48 22.7 c H78
2011-05-06 00:13:51 C 08 43 00.25 +33 48 14.0 c H78
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)