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
2025-05-19 21:36:16 C 09 23 10.786 +15 00 06.34 Z C23
2025-05-20 00:38:30 C 09 23 39.674 +14 43 13.04 V W68
2025-05-20 00:43:03 C 09 23 40.382 +14 42 46.91 V W68
2025-05-20 01:04:09 C 09 23 43.598 +14 40 45.59 V W68
2025-05-20 01:08:45 C 09 23 44.311 +14 40 19.31 V W68
2025-05-20 01:12:02 C 09 23 44.808 +14 40 00.55 V W68
2025-05-20 01:13:19 C 09 23 45.019 +14 39 53.17 V W68
2025-05-20 01:21:09 C 09 23 46.205 +14 39 08.10 V W68
2025-05-20 01:38:57 C 09 23 48.912 +14 37 26.00 V W68
2025-05-20 04:05:17 C 09 24 11.898 +14 23 05.17 V 703
2025-05-20 04:08:31 C 09 24 12.388 +14 22 46.42 V 703
2025-05-20 04:11:46 C 09 24 12.902 +14 22 27.77 V 703
2025-05-20 04:15:01 C 09 24 13.432 +14 22 09.62 V 703
2025-05-22 03:54:03 C 09 31 18.109 +09 58 41.92 V 703
2025-05-22 03:57:18 C 09 31 18.577 +09 58 24.46 V 703
2025-05-22 04:00:33 C 09 31 19.024 +09 58 07.14 V 703
2025-05-22 04:03:47 C 09 31 19.463 +09 57 49.86 V 703
2025-05-22 20:54:11 C 09 33 40.066 +08 28 49.08 Z C23
2025-05-22 21:11:09 C 09 33 42.353 +08 27 20.70 Z C23
2025-05-23 23:55:37 C 09 37 16.402 +06 11 23.68 V W68
2025-05-24 00:19:59 C 09 37 19.445 +06 09 21.60 V W68
2025-05-24 00:27:54 C 09 37 20.436 +06 08 42.18 V W68
2025-05-24 04:24:55 C 09 37 50.794 +05 48 38.66 V 703
2025-05-24 04:28:40 C 09 37 51.258 +05 48 20.34 V 703
2025-05-24 04:32:25 C 09 37 51.712 +05 48 01.51 V 703
2025-05-24 04:36:10 C 09 37 52.198 +05 47 43.30 V 703
2025-05-25 06:03:33 C 09 41 04.870 +03 44 09.53 V T05
2025-05-25 06:08:08 C 09 41 05.414 +03 43 47.78 V T05
2025-05-25 06:15:57 C 09 41 06.331 +03 43 10.67 V T05
2025-05-25 06:31:46 C 09 41 08.203 +03 41 55.28 V T05
2025-05-25 19:46:32 C 09 42 44.741 +02 40 00.12 V M22
2025-05-25 19:51:06 C 09 42 45.276 +02 39 38.99 V M22
2025-05-25 20:05:28 C 09 42 46.973 +02 38 32.32 V M22
2025-05-25 20:13:57 C 09 42 47.969 +02 37 52.86 V M22
2025-05-27 03:57:44 C 09 46 31.120 +00 14 09.31 V 703
2025-05-27 04:01:06 C 09 46 31.508 +00 13 54.52 V 703
2025-05-27 04:04:27 C 09 46 31.854 +00 13 39.90 V 703
2025-05-27 04:07:49 C 09 46 32.264 +00 13 25.14 V 703
2025-05-27 06:16:36 C 09 46 47.028 +00 04 04.76 V T08
2025-05-27 06:21:56 C 09 46 47.616 +00 03 41.54 V T08
2025-05-27 06:33:12 C 09 46 48.842 +00 02 52.30 V T08
2025-05-27 06:59:11 C 09 46 51.694 +00 00 58.54 V T08
2025-05-28 00:05:31 C 09 48 47.191 -01 12 23.18 V W68
2025-05-28 00:10:09 C 09 48 47.662 -01 12 42.55 V W68
2025-05-28 00:18:43 C 09 48 48.578 -01 13 18.84 V W68
2025-05-28 00:33:14 C 09 48 50.117 -01 14 20.47 V W68
2025-05-29 05:58:22 C 09 52 01.162 -03 16 05.16 V T05
2025-05-29 06:02:56 C 09 52 01.622 -03 16 23.30 V T05
2025-05-29 06:12:04 C 09 52 02.561 -03 16 59.92 V T05
2025-05-29 06:26:33 C 09 52 04.022 -03 17 58.27 V T05
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)