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
2018-01-18 05:40:13 C 23 09 44.39 +07 29 51.5 U T08
2018-01-18 05:44:14 C 23 09 44.66 +07 29 59.5 U T08
2018-01-18 05:53:32 C 23 09 45.04 +07 30 17.5 U T08
2018-01-18 05:58:11 C 23 09 45.30 +07 30 27.0 U T08
2018-03-23 20:44:57 C 00 20 47.92 +53 50 46.2 o 069
2018-03-23 20:59:51 C 00 20 49.19 +53 51 10.8 o 069
2018-03-23 21:15:35 C 00 20 50.51 +53 51 36.8 o 069
2018-03-23 21:40:33 C 00 20 52.70 +53 52 18.7 o 069
2018-03-23 21:55:27 C 00 20 54.02 +53 52 43.8 o 069
2018-03-23 22:10:07 C 00 20 55.29 +53 53 07.2 o 069
2018-03-28 21:29:02 C 00 32 42.23 +57 14 21.5 o 069
2018-03-28 21:39:42 C 00 32 43.52 +57 14 39.2 o 069
2018-03-28 21:50:02 C 00 32 44.75 +57 14 56.8 o 069
2018-04-13 20:09:30 C 02 08 13.53 +68 03 43.2 o 069
2018-04-13 20:34:52 C 02 08 26.13 +68 04 20.2 o 069
2018-04-13 20:59:47 C 02 08 38.50 +68 04 56.3 o 069
2018-04-18 15:51:08 C 03 20 10.54 +70 12 58.5 q C97
2018-04-18 15:57:26 C 03 20 15.48 +70 13 01.8 q C97
2018-04-18 16:01:28 C 03 20 18.37 +70 13 03.6 q C97
2018-04-25 03:07:38 C 05 36 45.10 +68 16 48.1 U 703
2018-04-25 03:16:04 C 05 36 52.72 +68 16 27.8 U 703
2018-04-25 03:24:30 C 05 37 00.09 +68 16 06.0 U 703
2018-04-25 03:32:56 C 05 37 07.62 +68 15 44.9 U 703
2018-05-03 03:20:04 C 07 50 08.33 +53 06 00.4 U G96
2018-05-03 03:27:41 C 07 50 11.90 +53 05 08.2 U G96
2018-05-03 03:35:19 C 07 50 15.53 +53 04 15.5 U G96
2018-05-03 03:42:58 C 07 50 19.05 +53 03 23.3 U G96
2018-05-03 03:46:19 C 07 50 20.63 +53 03 00.2 U 703
2018-05-03 03:54:04 C 07 50 24.26 +53 02 07.1 U 703
2018-05-03 04:01:49 C 07 50 27.90 +53 01 13.5 U 703
2018-05-03 04:09:34 C 07 50 31.56 +53 00 20.1 U 703
2018-05-04 03:23:21 C 08 01 06.58 +50 17 39.2 U G96
2018-05-04 03:30:55 C 08 01 09.79 +50 16 44.5 U G96
2018-05-04 03:46:04 C 08 01 16.23 +50 14 54.3 U G96
2018-05-06 06:05:30 C 08 21 01.95 +43 56 12.4 U T05
2018-05-06 06:17:08 C 08 21 05.94 +43 54 41.1 U T05
2018-05-06 06:31:20 C 08 21 10.83 +43 52 49.3 U T05
2018-05-08 04:13:40 C 08 36 01.08 +37 47 07.9 q W19
2018-05-08 04:19:56 C 08 36 02.92 +37 46 16.5 q W19
2018-05-08 04:26:17 C 08 36 04.80 +37 45 24.5 q W19
2018-05-10 04:00:45 C 08 49 04.45 +31 16 49.8 U 703
2018-05-10 04:09:08 C 08 49 06.57 +31 15 41.0 U 703
2018-05-10 04:17:30 C 08 49 08.59 +31 14 31.5 U 703
2018-05-10 04:25:53 C 08 49 10.61 +31 13 23.7 U 703
2018-05-11 19:55:46 C 08 58 25.73 +25 53 08.5 q K73
2018-05-11 20:00:27 C 08 58 26.73 +25 52 30.9 q K73
2018-05-11 20:07:41 C 08 58 28.28 +25 51 32.5 q K73
2018-05-11 20:13:09 C 08 58 29.44 +25 50 48.5 q K73
2018-05-11 20:20:11 C 08 58 30.93 +25 49 52.0 q K73
2018-05-11 20:27:11 C 08 58 32.46 +25 48 55.7 q K73
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)