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
2011-05-03 22:46:43 C 08 25 44.31 +43 44 45.1 o J69
2011-05-03 22:48:46 C 08 25 45.15 +43 44 20.5 o J69
2011-05-03 22:50:50 C 08 25 45.97 +43 43 56.1 o J69
2011-05-04 18:11:05 C 08 33 05.38 +39 52 24.1 r 168
2011-05-04 18:16:20 C 08 33 07.25 +39 51 20.3 r 168
2011-05-04 19:04:50 C 08 33 24.40 +39 41 30.4 r 168
2011-05-04 19:08:50 C 08 33 25.82 +39 40 42.0 r 168
2011-05-05 00:31:37 C 08 35 19.53 +38 36 34.4 c H78
2011-05-05 00:33:14 C 08 35 20.04 +38 36 14.4 c H78
2011-05-05 00:34:02 C 08 35 20.29 +38 36 04.6 c H78
2011-05-05 00:34:51 C 08 35 20.56 +38 35 54.6 c H78
2011-05-05 00:36:42 C 08 35 21.15 +38 35 32.2 c H78
2011-05-05 00:37:31 C 08 35 21.43 +38 35 22.2 c H78
2011-05-05 00:38:20 C 08 35 21.69 +38 35 12.3 c H78
2011-05-05 00:39:24 C 08 35 22.04 +38 34 58.7 c H78
2011-05-05 00:40:54 C 08 35 22.53 +38 34 40.8 c H78
2011-05-05 00:41:38 C 08 35 22.80 +38 34 31.7 c H78
2011-05-05 00:42:22 C 08 35 23.03 +38 34 23.3 c H78
2011-05-05 00:43:07 C 08 35 23.29 +38 34 13.8 c H78
2011-05-05 00:43:51 C 08 35 23.52 +38 34 04.5 c H78
2011-05-05 00:44:35 C 08 35 23.75 +38 33 55.9 c H78
2011-05-05 00:46:49 C 08 35 24.50 +38 33 28.8 c H78
2011-05-05 00:47:33 C 08 35 24.74 +38 33 19.3 c H78
2011-05-05 00:48:17 C 08 35 24.96 +38 33 10.2 c H78
2011-05-05 00:49:02 C 08 35 25.23 +38 33 01.9 c H78
2011-05-05 00:49:47 C 08 35 25.45 +38 32 52.5 c H78
2011-05-05 00:50:31 C 08 35 25.67 +38 32 42.9 c H78
2011-05-05 00:51:16 C 08 35 25.97 +38 32 34.3 c H78
2011-05-05 00:52:01 C 08 35 26.18 +38 32 25.3 c H78
2011-05-05 00:53:30 C 08 35 26.66 +38 32 07.2 c H78
2011-05-05 00:54:13 C 08 35 26.93 +38 31 58.1 c H78
2011-05-05 01:01:37 C 08 35 29.34 +38 30 28.2 c H78
2011-05-05 01:03:49 C 08 35 30.05 +38 30 01.3 c H78
2011-05-05 01:04:33 C 08 35 30.29 +38 29 52.3 c H78
2011-05-05 01:08:13 C 08 35 31.53 +38 29 07.8 c H78
2011-05-05 01:09:00 C 08 35 31.76 +38 28 58.3 c H78
2011-05-05 01:09:43 C 08 35 32.01 +38 28 48.8 c H78
2011-05-05 01:10:29 C 08 35 32.26 +38 28 40.2 c H78
2011-05-05 01:12:44 C 08 35 32.99 +38 28 12.2 c H78
2011-05-05 01:13:27 C 08 35 33.22 +38 28 03.8 c H78
2011-05-05 01:24:29 C 08 35 36.81 +38 25 48.7 c H78
2011-05-05 01:25:14 C 08 35 37.04 +38 25 40.0 c H78
2011-05-05 01:25:58 C 08 35 37.31 +38 25 30.8 c H78
2011-05-05 01:26:43 C 08 35 37.55 +38 25 21.5 c H78
2011-05-05 01:27:27 C 08 35 37.78 +38 25 12.7 c H78
2011-05-05 01:28:13 C 08 35 38.07 +38 25 03.3 c H78
2011-05-05 01:29:00 C 08 35 38.29 +38 24 53.9 c H78
2011-05-05 01:29:43 C 08 35 38.58 +38 24 44.8 c H78
2011-05-05 01:30:28 C 08 35 38.79 +38 24 35.6 c H78
2011-05-05 01:31:12 C 08 35 39.03 +38 24 26.8 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)