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
2004-04-27 20:25:47 C 07 37 55.63 +67 58 11.9 c A30
2004-04-27 20:26:12 C 07 37 56.48 +67 58 05.0 c A30
2004-04-27 20:26:50 C 07 37 57.04 +67 57 52.1 c A30
2004-04-27 20:27:14 C 07 37 57.80 +67 57 44.2 c A30
2004-04-27 20:27:38 C 07 37 58.36 +67 57 36.9 c A30
2004-04-27 20:28:15 C 07 37 59.38 +67 57 25.4 c A30
2004-04-27 20:28:40 C 07 38 00.00 +67 57 17.6 c A30
2004-04-27 20:29:05 C 07 38 00.65 +67 57 09.6 c A30
2004-04-27 20:29:30 C 07 38 01.29 +67 57 01.9 c A30
2004-04-27 20:29:55 C 07 38 01.80 +67 56 53.6 c A30
2004-04-27 20:30:59 C 07 38 03.66 +67 56 32.8 c A30
2004-04-27 20:31:24 C 07 38 03.84 +67 56 25.0 c A30
2004-04-27 20:32:27 C 07 38 05.39 +67 56 07.8 c A30
2004-04-27 20:33:04 C 07 38 06.31 +67 55 54.2 c A30
2004-04-27 20:33:29 C 07 38 07.13 +67 55 45.8 c A30
2004-04-27 20:33:54 C 07 38 07.74 +67 55 38.2 c A30
2004-04-27 20:34:30 C 07 38 08.66 +67 55 27.3 c A30
2004-04-27 20:34:42 C 07 38 09.04 +67 55 22.5 c A30
2004-04-27 20:35:45 C 07 38 10.56 +67 55 03.4 c A30
2004-04-27 20:36:10 C 07 38 11.21 +67 54 55.9 c A30
2004-04-27 20:36:35 C 07 38 11.77 +67 54 48.5 c A30
2004-04-28 22:17:38 C 08 09 04.69 +59 00 36.7 c 118
2004-04-28 22:18:38 C 08 09 05.66 +59 00 13.8 c 118
2004-04-28 22:20:28 C 08 09 07.38 +58 59 31.3 c 118
2004-04-29 01:57:16 C 08 12 29.52 +57 36 45.9 13.8 d H67
2004-04-29 01:59:56 C 08 12 31.77 +57 35 42.9 13.7 d H67
2004-04-29 02:02:17 C 08 12 33.81 +57 34 47.7 13.7 d H67
2004-04-29 11:29:49 C 08 20 21.99 +53 47 03.8 o 379
2004-04-29 11:30:58 C 08 20 22.83 +53 46 36.1 o 379
2004-04-29 11:35:33 C 08 20 26.16 +53 44 41.5 o 379
2004-04-29 11:44:18 C 08 20 32.57 +53 41 02.6 o 379
2004-04-29 11:53:09 C 08 20 39.06 +53 37 21.4 o 379
2004-04-29 11:58:55 C 08 20 43.22 +53 34 56.9 o 379
2004-04-29 12:00:04 C 08 20 44.19 +53 34 28.0 o 379
2004-04-29 21:25:27 C 08 27 25.11 +49 35 13.5 c 118
2004-04-29 21:26:22 C 08 27 25.71 +49 34 49.4 c 118
2004-04-29 21:28:13 C 08 27 26.91 +49 34 01.5 c 118
2004-04-29 21:29:08 C 08 27 27.49 +49 33 37.7 c 118
2004-04-30 03:31:53 C 08 31 18.21 +46 56 45.0 15.1 c 704
2004-04-30 03:46:17 C 08 31 26.44 +46 50 22.1 15.3 c 704
2004-04-30 04:01:43 C 08 31 35.24 +46 43 32.5 15.4 c 704
2004-04-30 04:16:33 C 08 31 43.70 +46 36 58.0 14.9 c 704
2004-04-30 04:31:28 C 08 31 52.26 +46 30 19.9 15.1 c 704
2004-05-01 02:09:29 C 08 43 07.76 +36 47 18.1 r H41
2004-05-01 02:11:20 C 08 43 08.54 +36 46 27.3 r H41
2004-05-01 02:12:34 C 08 43 09.04 +36 45 53.4 r H41
2004-05-01 02:13:43 C 08 43 09.54 +36 45 22.3 r H41
2004-05-01 02:14:48 C 08 43 09.97 +36 44 52.7 r H41
2004-05-01 02:15:51 C 08 43 10.43 +36 44 24.0 r H41
2004-05-01 02:16:54 C 08 43 10.88 +36 43 55.5 r H41
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)