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
2023-12-03 04:45:50 C 18 36 14.882 +34 26 19.21 V T05
2023-12-03 04:49:58 C 18 36 14.546 +34 26 19.18 V T05
2023-12-03 04:57:33 C 18 36 14.006 +34 26 19.21 V T05
2023-12-03 05:17:40 C 18 36 12.494 +34 26 19.54 V T05
2023-12-05 04:38:02 C 18 32 51.403 +34 27 28.15 V T05
2023-12-05 04:42:09 C 18 32 51.074 +34 27 27.50 V T05
2023-12-05 04:49:42 C 18 32 50.534 +34 27 27.25 V T05
2023-12-05 05:04:18 C 18 32 49.517 +34 27 26.50 V T05
2023-12-06 17:51:58 C 18 30 22.75 +34 25 38.7 V C23
2023-12-06 17:55:13 C 18 30 22.54 +34 25 38.6 V C23
2023-12-06 18:04:25 C 18 30 21.94 +34 25 37.5 V C23
2023-12-17 16:57:19 C 18 15 37.88 +33 17 26.6 V C23
2023-12-17 17:03:47 C 18 15 37.55 +33 17 23.7 V C23
2023-12-17 17:46:39 C 18 15 35.49 +33 17 04.0 V C23
2024-01-23 15:29:12 C 17 57 11.726 +19 03 10.69 V T08
2024-01-23 15:35:22 C 17 57 11.791 +19 03 01.80 V T08
2024-01-23 15:54:14 C 17 57 11.990 +19 02 35.38 V T08
2024-01-29 15:37:13 C 17 59 33.245 +15 30 05.04 V T05
2024-01-29 15:43:07 C 17 59 33.360 +15 29 56.36 V T05
2024-01-29 15:52:51 C 17 59 33.530 +15 29 41.10 V T05
2024-01-29 15:58:05 C 17 59 33.660 +15 29 33.25 V T05
2024-01-30 15:07:04 C 18 00 05.357 +14 53 49.45 V T08
2024-01-30 15:18:28 C 18 00 05.582 +14 53 31.60 V T08
2024-01-30 15:44:24 C 18 00 06.134 +14 52 52.07 V T08
2024-01-30 16:01:17 C 18 00 06.564 +14 52 25.54 V T08
2024-01-31 15:14:58 C 18 00 40.805 +14 16 09.37 V T08
2024-01-31 15:29:23 C 18 00 41.170 +14 15 47.09 V T08
2024-01-31 15:46:43 C 18 00 41.580 +14 15 20.02 V T08
2024-01-31 15:58:15 C 18 00 41.858 +14 15 02.38 V T08
2024-02-01 15:34:42 C 18 01 19.241 +13 37 45.48 V T05
2024-02-01 15:40:40 C 18 01 19.387 +13 37 35.98 V T05
2024-02-01 15:55:31 C 18 01 19.776 +13 37 12.47 V T05
2024-02-01 16:02:03 C 18 01 19.946 +13 37 02.75 V T05
2024-02-24 15:03:03 C 18 27 03.634 -02 38 19.43 V T05
2024-02-24 15:10:28 C 18 27 04.080 -02 38 33.47 V T05
2024-02-24 15:16:21 C 18 27 04.474 -02 38 45.24 V T05
2024-02-24 15:42:09 C 18 27 06.115 -02 39 35.42 V T05
2024-02-25 13:21:02 C 18 28 32.126 -03 22 02.53 V U52
2024-02-25 13:25:14 C 18 28 32.381 -03 22 11.35 V U52
2024-02-25 13:29:24 C 18 28 32.777 -03 22 20.10 V U52
2024-02-27 09:01:15 C 18 31 31.774 -04 48 14.98 V W68
2024-02-27 09:09:45 C 18 31 32.330 -04 48 31.82 V W68
2024-02-27 09:15:00 C 18 31 32.705 -04 48 42.05 V W68
2024-02-27 09:24:13 C 18 31 33.394 -04 49 00.98 V W68
2024-02-29 02:54:45 C 18 34 31.373 -06 12 21.85 V M22
2024-02-29 02:59:59 C 18 34 31.757 -06 12 32.11 V M22
2024-02-29 03:18:01 C 18 34 33.022 -06 13 08.40 V M22
2024-03-10 02:55:05 C 18 54 04.008 -14 37 11.86 V M22
2024-03-10 02:59:41 C 18 54 04.435 -14 37 22.08 V M22
2024-03-10 03:22:23 C 18 54 06.418 -14 38 11.76 V M22
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)