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
2023-11-15 19:08:41 C 19 29 23.00 +29 34 02.2 V C23
2023-11-17 05:20:13 C 19 21 35.551 +30 35 32.78 V T05
2023-11-17 05:24:21 C 19 21 34.637 +30 35 39.08 V T05
2023-11-17 05:27:37 C 19 21 33.929 +30 35 44.05 V T05
2023-11-17 05:31:47 C 19 21 33.014 +30 35 50.39 V T05
2023-11-17 05:32:26 C 19 21 32.873 +30 35 51.36 V T05
2023-11-17 05:40:23 C 19 21 31.145 +30 36 03.46 V T05
2023-11-17 05:47:04 C 19 21 29.686 +30 36 13.54 V T05
2023-11-17 05:54:27 C 19 21 28.085 +30 36 24.70 V T05
2023-11-17 15:26:47 C 19 19 33.00 +30 50 43.8 V M31
2023-11-17 15:28:52 C 19 19 32.53 +30 50 47.3 V M31
2023-11-17 15:30:55 C 19 19 32.06 +30 50 50.3 V M31
2023-11-17 15:32:59 C 19 19 31.65 +30 50 53.2 V M31
2023-11-17 15:36:31 C 19 19 30.97 +30 50 58.2 V M31
2023-11-17 15:37:35 C 19 19 30.76 +30 50 59.7 V M31
2023-11-17 15:38:39 C 19 19 30.53 +30 51 01.3 V M31
2023-11-17 15:39:43 C 19 19 30.31 +30 51 02.9 V M31
2023-11-17 15:40:47 C 19 19 30.08 +30 51 04.5 V M31
2023-11-17 15:41:51 C 19 19 29.87 +30 51 06.1 V M31
2023-11-17 15:42:55 C 19 19 29.67 +30 51 07.6 V M31
2023-11-17 15:44:00 C 19 19 29.43 +30 51 09.1 V M31
2023-11-17 15:45:04 C 19 19 29.22 +30 51 10.7 V M31
2023-11-17 15:46:07 C 19 19 28.99 +30 51 12.4 V M31
2023-11-18 04:38:23 C 19 16 57.389 +31 10 03.18 V T05
2023-11-18 04:42:26 C 19 16 56.578 +31 10 08.54 V T05
2023-11-18 05:17:07 C 19 16 49.687 +31 10 53.76 V T05
2023-11-18 05:28:43 C 19 16 47.400 +31 11 08.70 V T05
2023-11-19 05:13:45 C 19 12 31.507 +31 41 20.47 V T05
2023-11-19 05:22:33 C 19 12 29.930 +31 41 30.26 V T05
2023-11-19 05:45:04 C 19 12 25.922 +31 41 55.18 V T05
2023-11-19 19:10:10 C 19 10 12.47 +31 56 49.8 V M14
2023-11-19 19:27:06 C 19 10 09.68 +31 57 07.4 V M14
2023-11-19 19:42:14 C 19 10 07.18 +31 57 22.7 V M14
2023-11-23 05:15:26 C 18 58 38.014 +33 07 55.88 V T05
2023-11-23 05:20:15 C 18 58 37.397 +33 07 58.69 V T05
2023-11-23 05:28:16 C 18 58 36.374 +33 08 03.34 V T05
2023-11-23 05:42:54 C 18 58 34.498 +33 08 12.44 V T05
2023-11-23 18:14:43 C 18 57 04.36 +33 16 08.8 X L63
2023-11-23 18:35:21 C 18 57 01.84 +33 16 20.7 X L63
2023-11-23 18:52:52 C 18 56 59.72 +33 16 30.4 X L63
2023-11-26 04:54:44 C 18 50 38.227 +33 47 05.17 V T08
2023-11-26 04:58:43 C 18 50 37.800 +33 47 06.43 V T08
2023-11-26 05:30:57 C 18 50 34.385 +33 47 18.60 V T08
2023-11-29 04:46:36 C 18 43 53.866 +34 11 26.88 V T05
2023-11-29 04:52:02 C 18 43 53.359 +34 11 27.96 V T05
2023-11-29 05:00:45 C 18 43 52.577 +34 11 29.72 V T05
2023-11-29 05:16:17 C 18 43 51.187 +34 11 32.82 V T05
2023-11-29 17:03:14 C 18 42 51.36 +34 14 13.9 V C23
2023-11-29 17:23:21 C 18 42 49.57 +34 14 18.0 V C23
2023-11-29 18:02:56 C 18 42 46.11 +34 14 25.5 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)