139359 (2001 ME1)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.8697804334 ± 2.00e+00
Semi-major axis (a)2.6344145320 AU ± 3.00e+00
Inclination (i)5.95558487° ± 4.00e+00
Long. of Asc. Node (Ω)84.57556111° ± 5.00e+00
Arg. of Perihelion (ω)302.39502915° ± 6.00e+00
Mean Anomaly (M)231.01358098° ± 6.34e-06
Mean Motion (n)0.2305080549°/day ± 3.94e-01
Perihelion dist (q)0.34305232 AU ± 5.28e+00
Aphelion dist (Q)4.92577675 AU ± 7.70e+00
Orbital Period4.27588651 yr ± 7.30e+00
NGA Modelg(r)
A2-2.71168820e-05 AU/d²
Physical Parameters
H (abs. magnitude)16.52
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-27
RMS Residual0.370″
Uncertainty0
Orbit TypeApollo
MOID0.013294 AU
Observations Used728
Oppositions18
Arc Total2001-2025
First Observation Used2001-05-25
Last Observation Used2025-05-31
Observations (769)
Date Type RA Dec Mag Band Observatory
2001-06-18 14:59:59 C 16 58 24.81 -21 49 37.9 322
2001-06-18 15:02:59 C 16 58 23.52 -21 49 38.2 322
2001-06-18 15:06:07 C 16 58 22.22 -21 49 38.6 322
2001-06-18 15:10:22 C 16 58 20.37 -21 49 39.2 322
2001-06-18 15:32:36 C 16 58 10.87 -21 49 41.6 322
2001-06-18 15:36:02 C 16 58 09.39 -21 49 42.1 322
2001-06-18 15:39:22 C 16 58 07.98 -21 49 42.4 322
2001-06-18 15:42:58 C 16 58 06.44 -21 49 42.8 322
2001-06-18 15:47:18 C 16 58 04.57 -21 49 43.3 322
2001-06-18 17:04:32 C 16 57 30.179 -21 49 45.17 422
2001-06-18 17:05:30 C 16 57 29.760 -21 49 45.20 422
2001-06-18 20:37:45 C 16 56 03.18 -21 51 02.7 587
2001-06-18 20:40:14 C 16 56 02.10 -21 51 02.9 587
2001-06-18 20:44:14 C 16 56 00.31 -21 51 03.3 587
2001-06-18 20:48:45 C 16 55 58.40 -21 51 04.2 587
2001-06-18 21:26:03 C 16 55 42.75 -21 51 04.5 938
2001-06-18 21:30:28 C 16 55 40.83 -21 51 04.9 938
2001-06-18 21:35:46 C 16 55 38.49 -21 51 05.8 938
2001-06-18 21:44:32 C 16 55 34.64 -21 51 06.8 938
2001-06-18 21:56:51 C 16 55 29.19 -21 51 08.2 938
2001-06-18 22:01:35 C 16 55 27.11 -21 51 08.9 938
2001-06-18 22:04:54 C 16 55 25.35 -21 51 12.0 176
2001-06-18 22:06:28 C 16 55 24.95 -21 51 09.6 938
2001-06-18 22:11:24 C 16 55 22.75 -21 51 09.8 938
2001-06-18 22:16:21 C 16 55 20.57 -21 51 10.7 938
2001-06-18 22:21:17 C 16 55 18.36 -21 51 11.7 938
2001-06-18 22:23:05 C 16 55 17.32 -21 51 14.0 176
2001-06-18 22:26:14 C 16 55 16.17 -21 51 11.5 938
2001-06-18 22:28:35 C 16 55 14.89 -21 51 14.6 176
2001-06-18 22:30:58 C 16 55 14.09 -21 51 12.7 938
2001-06-18 22:35:43 C 16 55 11.98 -21 51 13.1 938
2001-06-18 22:35:44 C 16 55 11.73 -21 51 15.4 176
2001-06-18 22:40:26 C 16 55 09.87 -21 51 13.4 938
2001-06-18 22:45:10 C 16 55 07.78 -21 51 13.9 938
2001-06-18 22:49:55 C 16 55 05.67 -21 51 14.4 938
2001-06-18 22:57:05 C 16 55 02.49 -21 51 15.3 938
2001-06-18 23:01:48 C 16 55 00.35 -21 51 15.7 938
2001-06-18 23:06:31 C 16 54 58.24 -21 51 16.1 938
2001-06-18 23:11:16 C 16 54 56.13 -21 51 16.7 938
2001-06-18 23:15:58 C 16 54 54.03 -21 51 17.1 938
2001-06-18 23:20:41 C 16 54 51.94 -21 51 18.1 938
2001-06-19 00:02:45 C 16 54 32.81 -21 51 20.2 493
2001-06-19 00:04:52 C 16 54 31.88 -21 51 20.4 493
2001-06-19 05:37:01 C 16 52 05.10 -21 51 44.7 14.7 c 704
2001-06-19 05:37:58 C 16 52 04.70 -21 51 44.7 14.2 c 704
2001-06-19 05:53:52 C 16 51 57.52 -21 51 45.4 919
2001-06-19 05:55:09 C 16 51 56.71 -21 51 46.6 15.0 c 704
2001-06-19 05:55:41 C 16 51 56.76 -21 51 45.7 919
2001-06-19 05:55:49 C 16 51 56.41 -21 51 46.6 14.2 c 704
2001-06-19 05:59:14 C 16 51 55.08 -21 51 46.1 919
Radar Observations (1)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2014-06-18 13:35:00 231067289.38 4 us 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)