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
2023-07-23 10:26:57 C 03 56 05.074 -35 37 19.88 V W68
2023-07-25 03:35:59 C 03 59 15.310 -35 32 22.85 V M22
2023-07-25 03:50:44 C 03 59 16.392 -35 32 21.01 V M22
2023-07-25 04:07:43 C 03 59 17.693 -35 32 19.75 V M22
2023-07-25 04:28:37 C 03 59 19.310 -35 32 16.58 V M22
2023-08-04 09:03:37 C 04 17 02.686 -35 11 32.10 V W68
2023-08-04 09:08:12 C 04 17 03.031 -35 11 30.91 V W68
2023-08-04 09:18:40 C 04 17 03.842 -35 11 29.54 V W68
2023-08-04 09:33:23 C 04 17 04.649 -35 11 30.44 V W68
2023-08-06 03:11:31 C 04 19 54.485 -35 09 26.46 V M22
2023-08-06 03:16:10 C 04 19 54.761 -35 09 27.25 V M22
2023-08-06 03:25:37 C 04 19 55.440 -35 09 25.34 V M22
2023-08-06 03:39:52 C 04 19 56.299 -35 09 25.70 V M22
2023-08-14 09:10:20 C 04 32 35.587 -35 05 53.16 V W68
2023-08-14 09:28:58 C 04 32 36.636 -35 05 53.77 V W68
2023-08-14 09:39:01 C 04 32 37.222 -35 05 54.10 V W68
2023-08-24 02:45:49 C 04 45 48.295 -35 14 38.54 V M22
2023-08-24 02:50:26 C 04 45 48.523 -35 14 38.62 V M22
2023-08-24 02:58:28 C 04 45 48.946 -35 14 39.55 V M22
2023-08-24 03:59:32 C 04 45 51.931 -35 14 44.20 V M22
2023-08-25 00:58:20 S 04 46 56.73 -35 16 09.4 L C51
2023-08-25 00:58:32 S 04 46 56.71 -35 16 09.5 L C51
2023-08-25 18:04:50 S 04 47 49.04 -35 17 26.3 L C51
2023-08-25 19:38:10 S 04 47 53.82 -35 17 33.5 L C51
2023-08-25 22:44:06 S 04 48 03.20 -35 17 47.6 L C51
2023-08-26 00:17:15 S 04 48 07.91 -35 17 55.1 L C51
2023-08-26 01:50:35 S 04 48 12.65 -35 18 03.5 L C51
2023-08-26 04:57:15 S 04 48 22.05 -35 18 16.6 L C51
2023-08-26 14:17:04 S 04 48 50.08 -35 19 01.6 L C51
2023-08-26 15:50:24 S 04 48 54.63 -35 19 09.2 L C51
2023-08-26 18:57:04 S 04 49 04.01 -35 19 24.1 L C51
2023-08-27 02:09:44 C 04 49 26.112 -35 19 59.77 V M22
2023-08-27 02:26:56 C 04 49 26.921 -35 20 01.43 V M22
2023-08-27 02:32:12 C 04 49 27.178 -35 20 02.08 V M22
2023-08-27 02:36:53 C 04 49 27.406 -35 20 02.40 V M22
2023-08-27 03:57:36 C 04 49 31.154 -35 20 09.92 V M22
2023-08-28 08:23:04 C 04 50 54.622 -35 22 38.78 V W68
2023-08-28 08:27:38 C 04 50 54.840 -35 22 38.89 V W68
2023-08-28 08:35:35 C 04 50 55.200 -35 22 39.65 V W68
2023-09-02 02:08:41 C 04 56 07.668 -35 34 33.35 V M22
2023-09-02 02:13:19 C 04 56 07.824 -35 34 34.00 V M22
2023-09-02 02:41:16 C 04 56 08.971 -35 34 37.74 V M22
2023-09-04 14:22:06 C 04 58 39.696 -35 42 20.07 X F51
2023-09-04 14:33:45 C 04 58 40.130 -35 42 21.83 X F51
2023-09-04 14:56:33 C 04 58 40.976 -35 42 25.15 X F51
2023-09-21 07:42:37 C 05 10 24.185 -36 57 17.75 V W68
2023-09-21 07:47:11 C 05 10 24.242 -36 57 19.04 V W68
2023-09-21 08:15:09 C 05 10 24.557 -36 57 26.39 V W68
2023-09-21 08:25:25 C 05 10 24.646 -36 57 28.73 V W68
2023-09-23 01:09:56 C 05 10 57.641 -37 07 27.55 V M22
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)