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
2022-08-18 14:26:48 C 05 33 54.854 +13 40 29.71 V T05
2022-08-18 14:50:00 C 05 33 58.171 +13 41 02.00 V T05
2022-08-18 15:05:10 C 05 34 00.398 +13 41 23.24 V T05
2022-08-26 14:34:49 C 06 03 55.637 +18 20 01.46 V T05
2022-08-26 14:40:48 C 06 03 56.630 +18 20 09.78 V T05
2022-08-26 15:07:25 C 06 04 01.109 +18 20 49.70 V T05
2022-08-26 15:14:04 C 06 04 02.119 +18 21 00.83 V T05
2022-09-14 13:33:19 C 07 39 39.511 +29 45 48.38 V T08
2022-09-14 13:39:20 C 07 39 41.081 +29 45 57.02 V T08
2022-09-14 13:47:19 C 07 39 43.147 +29 46 08.51 V T08
2022-09-14 14:02:03 C 07 39 46.949 +29 46 29.21 V T08
2022-09-17 11:42:21 C 07 58 22.721 +31 18 01.51 V 703
2022-09-17 11:49:27 C 07 58 24.654 +31 18 10.26 V 703
2022-09-17 11:56:32 C 07 58 26.562 +31 18 19.62 V 703
2022-09-17 12:03:38 C 07 58 28.495 +31 18 28.58 V 703
2022-09-23 11:39:21 C 08 40 08.260 +33 54 57.53 V 703
2022-09-23 11:48:47 C 08 40 11.075 +33 55 05.99 V 703
2022-09-23 11:56:40 C 08 40 13.465 +33 55 13.58 V 703
2022-09-23 12:04:34 C 08 40 15.892 +33 55 20.68 V 703
2022-09-24 14:38:41 C 08 48 24.298 +34 18 17.24 V T05
2022-09-24 14:44:00 C 08 48 25.961 +34 18 21.89 V T05
2022-09-24 14:58:29 C 08 48 30.374 +34 18 33.84 V T05
2022-09-24 15:06:22 C 08 48 32.818 +34 18 40.57 V T05
2022-09-26 11:04:43 C 09 02 15.479 +34 51 40.82 V 703
2022-09-26 11:12:01 C 09 02 17.754 +34 51 47.38 V 703
2022-09-26 11:19:19 C 09 02 20.036 +34 51 52.38 V 703
2022-09-26 11:26:37 C 09 02 22.312 +34 51 56.84 V 703
2022-09-30 14:44:56 C 09 34 06.994 +35 42 23.29 V T08
2022-09-30 15:09:10 C 09 34 14.863 +35 42 32.15 V T08
2022-09-30 15:15:10 C 09 34 16.771 +35 42 34.24 V T08
2022-09-30 15:19:49 C 09 34 18.257 +35 42 37.08 V T08
2022-10-03 14:48:37 C 09 57 27.523 +35 56 31.88 V T08
2022-10-03 14:54:38 C 09 57 29.477 +35 56 31.99 V T08
2022-10-03 15:07:50 C 09 57 33.758 +35 56 33.07 V T08
2022-10-03 15:19:13 C 09 57 37.394 +35 56 34.08 V T08
2022-10-09 12:03:01 C 10 42 32.558 +35 28 10.02 V 703
2022-10-09 12:08:10 C 10 42 34.132 +35 28 08.80 V 703
2022-10-09 12:13:19 C 10 42 35.726 +35 28 05.48 V 703
2022-10-09 12:18:27 C 10 42 37.300 +35 28 04.30 V 703
2023-04-01 08:52:06 C 21 53 43.512 -46 10 22.62 V W68
2023-04-01 08:56:09 C 21 53 44.292 -46 10 23.02 V W68
2023-04-01 09:19:03 C 21 53 48.554 -46 10 27.91 V W68
2023-04-01 09:23:40 C 21 53 49.416 -46 10 28.13 V W68
2023-07-14 09:27:30 C 03 38 27.386 -36 10 21.76 V W68
2023-07-14 09:42:13 C 03 38 28.555 -36 10 19.31 V W68
2023-07-14 09:47:37 C 03 38 28.975 -36 10 18.12 V W68
2023-07-14 10:00:17 C 03 38 30.082 -36 10 16.21 V W68
2023-07-23 09:24:11 C 03 56 00.312 -35 37 27.16 V W68
2023-07-23 09:28:15 C 03 56 00.581 -35 37 26.65 V W68
2023-07-23 10:01:23 C 03 56 03.139 -35 37 23.52 V W68
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)