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
2010-09-27 22:18:13 S 01 14 57.557 -86 16 36.66 L C51
2010-09-27 23:53:24 S 01 12 30.115 -86 15 48.49 L C51
2010-09-28 04:39:05 S 01 05 15.024 -86 13 16.97 L C51
2010-09-28 06:14:26 S 01 02 53.515 -86 12 23.18 L C51
2010-09-28 07:49:36 S 01 00 30.629 -86 11 27.74 L C51
2010-09-28 09:24:46 S 00 58 09.713 -86 10 30.76 L C51
2010-09-28 12:35:17 S 00 53 31.111 -86 08 31.70 L C51
2010-09-28 14:10:38 S 00 51 13.680 -86 07 29.89 L C51
2010-09-28 15:45:48 S 00 48 57.410 -86 06 26.06 L C51
2010-09-28 17:20:58 S 00 46 42.406 -86 05 21.70 L C51
2010-09-28 17:21:09 S 00 46 40.783 -86 05 21.26 L C51
2010-09-28 18:56:19 S 00 44 27.806 -86 04 14.02 L C51
2010-09-28 20:31:29 S 00 42 14.506 -86 03 06.23 L C51
2010-09-28 22:06:50 S 00 40 03.461 -86 01 56.53 L C51
2010-09-28 23:42:00 S 00 37 53.424 -86 00 44.60 L C51
2010-09-29 04:27:41 S 00 31 29.04 -85 57 02.5 L C51
2010-09-29 06:03:02 S 00 29 23.66 -85 55 45.8 L C51
2010-09-29 07:38:12 S 00 27 19.19 -85 54 27.1 L C51
2010-09-29 09:13:33 S 00 25 16.02 -85 53 07.1 L C51
2010-09-29 18:44:55 S 00 13 25.795 -85 44 39.66 L C51
2010-09-29 20:20:05 S 00 11 31.838 -85 43 10.99 L C51
2010-09-29 20:20:16 S 00 11 31.884 -85 43 10.78 L C51
2010-09-29 21:55:26 S 00 09 39.338 -85 41 40.16 L C51
2010-09-29 23:30:36 S 00 07 48.250 -85 40 09.01 L C51
2010-09-30 01:05:57 S 00 05 57.089 -85 38 36.13 L C51
2010-09-30 04:16:28 S 00 02 21.408 -85 35 27.74 L C51
2010-09-30 05:51:39 S 00 00 34.994 -85 33 51.05 L C51
2010-09-30 07:26:49 S 23 58 50.114 -85 32 13.20 L C51
2010-09-30 13:47:51 S 23 52 01.980 -85 25 32.02 L C51
2010-09-30 16:58:22 S 23 48 45.816 -85 22 04.62 L C51
2010-09-30 20:08:53 S 23 45 33.449 -85 18 33.23 L C51
2010-10-01 05:40:15 S 23 36 27.094 -85 07 35.04 L C51
2010-10-01 08:50:46 S 23 33 33.756 -85 03 48.31 L C51
2010-10-01 12:01:17 S 23 30 44.959 -84 59 58.60 L C51
2010-10-15 07:47:11 S 21 48 26.825 -75 32 37.25 L C51
2010-10-15 07:47:22 S 21 48 26.962 -75 32 36.46 L C51
2010-10-15 09:22:32 S 21 48 20.489 -75 29 26.38 L C51
2010-11-02 11:14:49 C 21 45 37.17 -59 35 52.8 r E12
2010-11-02 11:33:10 C 21 45 37.57 -59 35 09.0 r E12
2010-11-02 11:51:31 C 21 45 37.95 -59 34 25.3 r E12
2010-11-02 12:09:53 C 21 45 38.36 -59 33 41.4 r E12
2011-01-02 02:18:53 C 22 45 56.77 -01 50 23.3 r 703
2011-01-02 02:27:21 C 22 45 57.13 -01 50 04.5 r 703
2011-01-02 02:36:25 C 22 45 57.45 -01 49 44.7 r 703
2011-01-02 02:44:55 C 22 45 57.81 -01 49 27.2 r 703
2011-04-27 21:28:14 C 06 49 52.99 +67 15 02.7 u J93
2011-04-27 21:33:36 C 06 49 58.48 +67 14 26.0 u J93
2011-04-27 21:39:00 C 06 50 04.06 +67 13 48.4 u J93
2011-05-03 22:41:36 C 08 25 42.27 +43 45 46.5 o J69
2011-05-03 22:44:41 C 08 25 43.51 +43 45 09.5 o J69
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)