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
2016-10-31 22:23:37 C 05 36 22.35 +67 19 36.2 c 127
2016-10-31 22:34:42 C 05 36 20.62 +67 29 30.3 q Z80
2016-10-31 22:37:30 C 05 36 19.95 +67 32 04.4 q Z80
2016-10-31 22:40:17 C 05 36 19.27 +67 34 38.1 q Z80
2016-10-31 22:43:05 C 05 36 18.59 +67 37 12.1 q Z80
2016-10-31 22:45:52 C 05 36 17.88 +67 39 45.8 q Z80
2016-10-31 22:48:39 C 05 36 17.19 +67 42 19.4 q Z80
2016-10-31 22:51:26 C 05 36 16.48 +67 44 52.9 q Z80
2016-10-31 22:53:02 C 05 36 16.06 +67 46 20.9 q Z80
2016-11-01 00:05:17 C 05 35 53.43 +68 52 32.7 o K85
2016-11-01 00:17:21 C 05 35 49.52 +69 03 28.2 o K85
2016-11-01 18:35:55 C 05 23 19.25 +84 00 30.2 t K05
2016-11-01 19:51:54 C 05 20 42.59 +84 56 04.1 S 619
2016-11-01 19:52:55 C 05 20 40.21 +84 56 48.2 S 619
2016-11-01 20:33:23 C 05 18 09.90 +85 27 08.1 q C73
2016-11-01 20:34:29 C 05 18 00.97 +85 26 35.3 q Z49
2016-11-01 20:36:34 C 05 17 57.44 +85 29 25.6 q C73
2016-11-01 20:39:45 C 05 17 45.01 +85 31 42.2 q C73
2016-11-01 20:42:56 C 05 17 32.48 +85 33 58.7 q C73
2016-11-01 20:46:06 C 05 17 19.48 +85 36 15.7 q C73
2016-11-01 20:49:17 C 05 17 06.48 +85 38 30.9 q C73
2016-11-01 20:51:45 C 05 16 57.04 +85 38 56.5 q Z49
2016-11-01 20:52:28 C 05 16 53.01 +85 40 47.9 q C73
2016-11-01 20:55:39 C 05 16 39.28 +85 43 02.5 q C73
2016-11-01 20:58:50 C 05 16 25.19 +85 45 18.4 q C73
2016-11-01 21:05:08 C 05 16 02.15 +85 48 27.1 q Z49
2016-11-02 21:57:41 C 17 50 49.08 +79 37 42.6 o Z80
2016-11-02 21:59:24 C 17 50 48.33 +79 36 50.8 o Z80
2016-11-02 21:59:49 C 17 50 47.27 +79 36 37.6 q J69
2016-11-02 22:01:15 C 17 50 47.58 +79 35 58.1 o Z80
2016-11-02 22:01:31 C 17 50 46.58 +79 35 48.8 q J69
2016-11-02 22:02:59 C 17 50 46.89 +79 35 08.8 o Z80
2016-11-02 22:03:13 C 17 50 45.92 +79 34 59.8 q J69
2016-11-02 22:04:36 C 17 50 46.22 +79 34 19.9 o Z80
2016-11-02 22:04:55 C 17 50 45.23 +79 34 10.9 q J69
2016-11-02 22:06:24 C 17 50 45.55 +79 33 29.8 o Z80
2016-11-02 22:06:37 C 17 50 44.53 +79 33 22.0 q J69
2016-11-02 22:08:18 C 17 50 43.83 +79 32 33.3 q J69
2016-11-02 22:08:39 C 17 50 44.48 +79 32 25.2 o Z80
2016-11-02 22:10:50 C 17 50 43.63 +79 31 22.3 o Z80
2016-11-04 08:45:38 S 17 45 27.571 +67 05 11.54 L C51
2016-11-04 18:45:31 C 17 44 49.69 +64 34 29.5 q Z52
2016-11-04 19:38:58 C 17 44 46.43 +64 21 49.2 q Z52
2016-11-04 20:34:28 C 17 44 43.87 +64 08 48.3 q Z52
2016-11-04 21:16:15 C 17 44 42.41 +63 59 06.8 q Z52
2016-11-07 01:30:09 C 17 43 36.36 +55 26 21.6 q 703
2016-11-07 01:38:52 C 17 43 36.08 +55 25 17.8 q 703
2016-11-07 01:47:35 C 17 43 35.78 +55 24 14.1 q 703
2016-11-07 01:56:20 C 17 43 35.49 +55 23 10.5 q 703
2016-11-07 20:39:44 C 17 43 23.82 +53 22 24.1 q Z52
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)