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
2018-05-24 06:42:39 C 09 42 59.94 -05 55 06.5 U T05
2018-05-24 06:56:53 C 09 43 01.35 -05 56 11.7 U T05
2018-05-24 07:11:15 C 09 43 02.78 -05 57 17.3 U T05
2018-05-24 07:16:33 C 09 43 03.31 -05 57 41.7 U T05
2018-05-24 07:25:45 C 09 43 04.24 -05 58 23.7 U T05
2018-05-24 07:31:51 C 09 43 04.84 -05 58 51.5 U T05
2018-05-24 07:45:51 C 09 43 06.24 -05 59 55.5 U T05
2018-05-31 07:27:42 C 09 58 30.21 -16 34 46.6 U T05
2018-05-31 07:37:01 C 09 58 30.89 -16 35 15.6 U T05
2018-05-31 07:39:56 C 09 58 31.16 -16 35 24.5 U T05
2018-05-31 07:50:41 C 09 58 32.03 -16 35 57.7 U T05
2018-06-02 06:24:42 C 10 02 15.85 -18 53 38.4 U T08
2018-06-02 06:37:35 C 10 02 16.80 -18 54 14.5 U T08
2018-06-02 06:50:23 C 10 02 17.76 -18 54 50.2 U T08
2018-06-02 07:01:51 C 10 02 18.60 -18 55 22.3 U T08
2018-06-04 06:05:40 C 10 05 54.89 -21 01 17.9 U T05
2018-06-04 06:16:27 C 10 05 55.64 -21 01 45.2 U T05
2018-06-04 06:28:47 C 10 05 56.52 -21 02 16.3 U T05
2018-06-04 06:39:25 C 10 05 57.27 -21 02 43.0 U T05
2018-06-06 05:47:12 C 10 09 25.79 -22 57 16.6 U T08
2018-06-06 05:57:23 C 10 09 26.51 -22 57 40.5 U T08
2018-06-06 06:08:54 C 10 09 27.29 -22 58 07.0 U T08
2018-06-06 06:20:20 C 10 09 28.07 -22 58 33.2 U T08
2018-06-10 06:00:37 C 10 16 13.12 -26 21 52.1 U T08
2018-06-10 06:08:40 C 10 16 13.66 -26 22 07.5 U T08
2018-06-10 06:19:24 C 10 16 14.39 -26 22 28.1 U T08
2018-06-10 06:30:56 C 10 16 15.09 -26 22 50.8 U T08
2018-06-14 06:00:12 C 10 22 44.11 -29 14 57.0 U T08
2018-06-14 06:05:34 C 10 22 44.42 -29 15 05.5 U T08
2018-06-14 06:13:41 C 10 22 44.95 -29 15 19.3 U T08
2018-06-14 06:24:30 C 10 22 45.66 -29 15 36.9 U T08
2019-05-29 03:57:35 C 07 08 08.68 +46 28 51.0 U I41
2019-05-29 04:03:12 C 07 08 10.51 +46 28 45.8 U I41
2019-05-29 04:07:26 C 07 08 11.87 +46 28 41.8 U I41
2019-05-29 04:11:39 C 07 08 13.24 +46 28 38.0 U I41
2019-06-07 04:04:42 C 08 14 02.80 +41 43 21.9 U I41
2019-06-07 04:08:51 C 08 14 03.97 +41 43 14.7 U I41
2019-06-07 04:13:02 C 08 14 05.14 +41 43 07.5 U I41
2019-06-07 04:17:11 C 08 14 06.31 +41 43 00.3 U I41
2019-06-16 04:09:33 C 09 09 04.68 +34 30 41.8 U I41
2019-06-16 04:13:52 C 09 09 05.66 +34 30 32.0 U I41
2019-06-16 04:18:12 C 09 09 06.63 +34 30 22.2 U I41
2019-06-16 04:22:30 C 09 09 07.61 +34 30 12.5 U I41
2019-06-25 06:04:29 C 09 53 23.87 +25 51 28.4 V T05
2019-06-25 06:09:46 C 09 53 24.86 +25 51 15.2 V T05
2019-06-25 06:17:03 C 09 53 26.16 +25 50 56.5 V T05
2019-06-25 06:29:42 C 09 53 28.46 +25 50 25.0 V T05
2022-08-11 03:22:53 C 05 09 33.13 +09 39 17.7 X C95
2022-08-11 03:30:47 C 05 09 34.16 +09 39 27.8 X C95
2022-08-18 14:20:57 C 05 33 54.024 +13 40 21.07 V T05
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)