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
2004-05-06 19:40:16 C 09 16 35.91 -09 56 38.9 r A30
2004-05-06 19:40:34 C 09 16 35.96 -09 56 41.8 r A30
2004-05-06 19:41:08 C 09 16 36.05 -09 56 49.2 r A30
2004-05-06 19:41:43 C 09 16 36.06 -09 56 57.3 r A30
2004-05-06 19:42:00 C 09 16 36.12 -09 56 59.4 r A30
2004-05-06 19:42:36 C 09 16 36.26 -09 57 07.8 r A30
2004-05-06 19:43:27 C 09 16 36.32 -09 57 17.3 r A30
2004-05-06 19:45:06 C 09 16 36.53 -09 57 36.3 r A30
2004-05-06 19:45:22 C 09 16 36.54 -09 57 41.4 r A30
2004-05-06 19:45:40 C 09 16 36.55 -09 57 44.2 r A30
2004-05-06 19:46:14 C 09 16 36.74 -09 57 51.6 r A30
2004-05-07 02:36:21 C 09 17 29.79 -11 18 03.9 r H41
2004-05-07 02:37:07 C 09 17 29.88 -11 18 12.8 r H41
2004-05-07 02:38:15 C 09 17 30.00 -11 18 25.6 r H41
2004-05-07 02:39:14 C 09 17 30.11 -11 18 36.7 r H41
2004-05-07 02:40:17 C 09 17 30.23 -11 18 48.7 r H41
2004-05-07 02:41:14 C 09 17 30.33 -11 18 59.7 r H41
2004-05-07 02:43:18 C 09 17 30.55 -11 19 23.2 r H41
2004-05-08 02:16:45 C 09 20 19.09 -15 25 26.8 r H41
2004-05-08 02:19:10 C 09 20 19.32 -15 25 49.9 r H41
2004-05-08 02:20:32 C 09 20 19.45 -15 26 02.7 r H41
2004-05-08 02:37:36 C 09 20 21.09 -15 28 44.4 r H41
2004-05-08 02:39:12 C 09 20 21.23 -15 28 59.5 r H41
2004-05-08 02:40:07 C 09 20 21.32 -15 29 07.9 r H41
2004-05-10 02:39:38 C 09 25 04.44 -21 52 58.6 r H41
2004-05-10 02:40:42 C 09 25 04.55 -21 53 05.7 r H41
2004-05-10 02:42:14 C 09 25 04.65 -21 53 16.0 r H41
2004-05-10 02:43:19 C 09 25 04.75 -21 53 23.4 r H41
2004-05-10 02:44:26 C 09 25 04.83 -21 53 30.8 r H41
2004-05-10 02:45:15 C 09 25 04.88 -21 53 36.0 r H41
2004-05-10 02:46:40 C 09 25 05.00 -21 53 45.4 r H41
2004-05-10 02:48:06 C 09 25 05.11 -21 53 55.2 r H41
2004-05-10 08:20:21 C 09 25 35.50 -22 29 29.8 r 428
2004-05-10 08:21:14 C 09 25 35.56 -22 29 35.4 r 428
2004-05-10 08:22:07 C 09 25 35.61 -22 29 41.1 r 428
2004-05-10 08:23:01 C 09 25 35.67 -22 29 46.9 r 428
2004-05-11 02:47:06 C 09 27 04.87 -24 22 26.2 r H41
2004-05-11 02:49:48 C 09 27 05.04 -24 22 41.4 r H41
2004-05-11 02:50:29 C 09 27 05.11 -24 22 45.1 r H41
2004-05-11 02:52:00 C 09 27 05.20 -24 22 54.3 r H41
2004-05-11 02:53:00 C 09 27 05.26 -24 22 59.4 r H41
2004-05-11 02:53:56 C 09 27 05.35 -24 23 04.6 r H41
2004-05-11 02:54:50 C 09 27 05.38 -24 23 09.9 r H41
2004-05-15 08:37:59 C 09 33 57.13 -31 38 38.9 r 428
2004-05-15 08:38:34 C 09 33 57.16 -31 38 40.6 r 428
2004-05-15 08:39:06 C 09 33 57.18 -31 38 42.6 r 428
2004-05-15 08:39:39 C 09 33 57.21 -31 38 44.3 r 428
2004-05-27 08:17:36 C 09 48 01.34 -40 40 34.8 r 428
2004-05-27 08:19:01 C 09 48 01.41 -40 40 36.2 r 428
2004-05-27 08:20:24 C 09 48 01.44 -40 40 37.9 r 428
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)