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
2023-11-07 00:43:46 C 21 17 08.398 +10 02 16.76 V W68
2023-11-07 01:15:16 C 21 16 36.000 +10 09 10.30 V W68
2023-11-07 01:19:52 C 21 16 31.291 +10 10 10.34 V W68
2023-11-07 01:27:45 C 21 16 23.230 +10 11 53.23 V W68
2023-11-07 01:28:11 C 21 16 27.167 +10 10 03.97 V 703
2023-11-07 01:37:17 C 21 16 17.821 +10 12 03.06 V 703
2023-11-07 01:46:22 C 21 16 08.497 +10 14 01.93 V 703
2023-11-07 01:55:27 C 21 15 59.188 +10 16 00.55 V 703
2023-11-07 11:32:08 C 21 06 43.20 +12 15 23.5 r Q10
2023-11-07 11:44:10 C 21 06 31.81 +12 17 45.4 r Q10
2023-11-07 11:50:11 C 21 06 26.19 +12 18 55.5 r Q10
2023-11-07 16:22:52 C 21 02 24.41 +13 11 00.9 X G02
2023-11-07 16:25:51 C 21 02 21.69 +13 11 34.7 X G02
2023-11-07 16:28:39 C 21 02 19.13 +13 12 06.5 X G02
2023-11-07 18:40:01 C 21 00 21.99 +13 36 24.2 V C23
2023-11-07 18:42:59 C 21 00 19.37 +13 36 56.5 V C23
2023-11-07 18:45:55 C 21 00 16.74 +13 37 28.9 V C23
2023-11-08 16:31:52 C 20 42 51.85 +17 11 27.9 X G02
2023-11-08 16:34:20 C 20 42 49.98 +17 11 49.7 X G02
2023-11-08 16:36:50 C 20 42 48.12 +17 12 11.5 X G02
2023-11-09 05:55:44 C 20 33 27.408 +19 01 40.33 V T05
2023-11-09 06:00:57 C 20 33 23.832 +19 02 19.86 V T05
2023-11-09 06:10:44 C 20 33 17.141 +19 03 33.59 V T05
2023-11-11 06:14:31 C 20 06 27.293 +23 54 20.30 V T05
2023-11-11 06:20:33 C 20 06 24.382 +23 54 48.46 V T05
2023-11-11 06:27:53 C 20 06 20.839 +23 55 22.55 V T05
2023-11-11 06:42:24 C 20 06 13.843 +23 56 30.34 V T05
2023-11-11 12:57:48 C 20 03 22.59 +24 25 32.8 Z O52
2023-11-11 13:00:54 C 20 03 21.01 +24 25 47.8 Z O52
2023-11-11 13:04:01 C 20 03 19.58 +24 26 01.3 Z O52
2023-11-11 13:07:07 C 20 03 18.24 +24 26 13.5 Z O52
2023-11-11 20:02:09 C 20 00 17.64 +24 55 33.8 V C23
2023-11-11 20:05:37 C 20 00 16.13 +24 55 48.1 V C23
2023-11-11 20:08:30 C 20 00 14.88 +24 56 00.1 V C23
2023-11-13 14:21:38 C 19 44 25.21 +27 25 24.6 Y N42
2023-11-13 14:22:05 C 19 44 25.05 +27 25 26.1 Y N42
2023-11-13 14:22:31 C 19 44 24.90 +27 25 27.2 Y N42
2023-11-14 02:51:26 C 19 40 27.99 +28 00 35.0 q U55
2023-11-14 03:02:06 C 19 40 24.62 +28 01 03.2 q U55
2023-11-14 03:12:46 C 19 40 21.30 +28 01 31.6 q U55
2023-11-15 05:22:34 C 19 32 53.753 +29 05 32.32 V T05
2023-11-15 05:27:07 C 19 32 52.478 +29 05 42.04 V T05
2023-11-15 05:27:46 C 19 32 52.255 +29 05 43.33 V T05
2023-11-15 05:49:26 C 19 32 46.337 +29 06 29.41 V T05
2023-11-15 05:50:05 C 19 32 46.152 +29 06 30.71 V T05
2023-11-15 14:10:01 C 19 30 36.09 +29 24 15.2 Z O52
2023-11-15 14:11:34 C 19 30 35.59 +29 24 16.8 Z O52
2023-11-15 14:19:19 C 19 30 33.52 +29 24 34.9 Z O52
2023-11-15 19:03:28 C 19 29 24.32 +29 33 52.2 V C23
2023-11-15 19:06:22 C 19 29 23.59 +29 33 57.6 V C23
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)