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
2023-10-28 07:06:29 C 02 58 05.909 -40 59 25.55 V W68
2023-10-30 05:02:07 C 02 06 05.474 -38 28 20.10 V W68
2023-10-30 05:06:42 C 02 05 59.184 -38 27 55.66 V W68
2023-10-30 05:16:29 C 02 05 45.746 -38 27 03.71 V W68
2023-10-30 05:30:50 C 02 05 25.990 -38 25 47.10 V W68
2023-10-31 21:47:03 C 01 04 01.392 -33 03 10.30 V M22
2023-10-31 21:51:43 C 01 03 53.342 -33 02 17.88 V M22
2023-10-31 22:16:44 C 01 03 10.102 -32 57 34.31 V M22
2023-11-02 05:12:23 C 00 08 32.165 -25 41 06.36 V 703
2023-11-02 05:20:15 C 00 08 17.617 -25 38 52.22 V 703
2023-11-02 05:28:07 C 00 08 03.059 -25 36 37.73 V 703
2023-11-02 05:35:59 C 00 07 48.515 -25 34 22.98 V 703
2023-11-02 11:50:16 C 23 56 33.89 -23 44 32.4 V P87
2023-11-02 11:53:26 C 23 56 28.05 -23 43 35.1 V P87
2023-11-02 11:56:56 C 23 56 21.56 -23 42 31.8 V P87
2023-11-03 23:51:04 C 22 53 42.10 -11 41 12.0 V W46
2023-11-03 23:59:53 C 22 53 27.26 -11 38 06.3 V W46
2023-11-04 00:06:46 C 22 53 15.74 -11 35 41.6 V W46
2023-11-04 03:09:55 C 22 48 14.994 -10 31 26.15 V 703
2023-11-04 03:17:35 C 22 48 02.293 -10 28 45.08 V 703
2023-11-04 03:25:16 C 22 47 49.592 -10 26 03.88 V 703
2023-11-04 03:32:57 C 22 47 36.892 -10 23 22.38 V 703
2023-11-04 17:26:52 C 22 26 00.52 -05 36 16.4 X G02
2023-11-04 17:31:35 C 22 25 53.32 -05 34 40.9 X G02
2023-11-04 17:36:07 C 22 25 46.38 -05 33 09.0 X G02
2023-11-05 13:52:52 C 21 57 19.77 +00 56 18.8 Y N42
2023-11-05 13:53:04 C 21 57 19.51 +00 56 22.4 Y N42
2023-11-05 13:53:17 C 21 57 19.24 +00 56 26.0 Y N42
2023-11-05 14:32:08 C 21 56 29.19 +01 07 42.2 q 168
2023-11-05 14:52:10 C 21 56 02.69 +01 13 40.6 q 168
2023-11-05 15:30:08 C 21 55 12.70 +01 24 57.3 q 168
2023-11-05 15:54:11 C 21 54 41.14 +01 32 04.3 q 168
2023-11-05 16:18:14 C 21 54 09.70 +01 39 10.0 q 168
2023-11-06 15:04:04 C 21 27 15.55 +07 45 45.6 q 168
2023-11-06 15:26:15 C 21 26 51.15 +07 51 06.4 q 168
2023-11-06 16:11:25 C 21 26 01.68 +08 01 56.7 q 168
2023-11-06 16:24:19 C 21 25 45.41 +08 05 21.2 Y N42
2023-11-06 16:24:31 C 21 25 45.19 +08 05 23.9 Y N42
2023-11-06 16:24:43 C 21 25 44.98 +08 05 26.7 Y N42
2023-11-06 16:49:28 C 21 25 23.29 +08 11 14.6 X G02
2023-11-06 16:51:19 C 21 25 18.28 +08 11 27.0 q 168
2023-11-06 16:52:37 C 21 25 19.85 +08 11 59.6 X G02
2023-11-06 16:55:46 C 21 25 16.42 +08 12 44.5 X G02
2023-11-06 17:31:54 C 21 24 37.90 +08 21 24.0 V 130
2023-11-06 17:32:41 C 21 24 37.04 +08 21 35.0 V 130
2023-11-06 17:33:33 C 21 24 36.10 +08 21 47.3 V 130
2023-11-06 17:34:26 C 21 24 35.15 +08 21 59.7 V 130
2023-11-06 19:47:08 C 21 22 13.397 +08 52 49.80 V Z80
2023-11-06 19:55:07 C 21 22 04.896 +08 54 40.25 V Z80
2023-11-06 20:03:07 C 21 21 56.383 +08 56 30.95 V Z80
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)