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
2001-06-21 20:40:10 C 16 17 17.75 -21 43 39.7 151
2001-06-21 20:44:38 C 16 17 14.71 -21 43 37.9 151
2001-06-21 20:45:21 C 16 17 14.24 -21 43 37.8 151
2001-06-21 21:06:35 C 16 16 59.57 -21 43 27.6 470
2001-06-21 21:10:39 C 16 16 56.79 -21 43 26.2 470
2001-06-22 02:34:42 C 16 13 17.25 -21 40 56.2 739
2001-06-22 02:39:13 C 16 13 14.04 -21 40 53.7 739
2001-06-22 02:41:49 C 16 13 12.12 -21 40 53.9 739
2001-06-22 05:25:18 C 16 11 15.99 -21 39 27.5 14.2 c 704
2001-06-22 05:44:56 C 16 11 01.84 -21 39 16.9 c 704
2001-06-22 06:02:42 C 16 10 48.97 -21 39 06.6 15.0 c 704
2001-06-22 20:42:06 C 15 59 55.79 -21 29 35.8 046
2001-06-22 20:44:20 C 15 59 53.99 -21 29 34.0 046
2001-06-22 20:45:53 C 15 59 52.77 -21 29 32.7 046
2001-06-22 20:46:26 C 15 59 52.33 -21 29 32.3 046
2001-06-22 20:46:59 C 15 59 51.88 -21 29 31.7 046
2001-06-22 21:38:23 C 15 59 10.91 -21 28 50.5 118
2001-06-22 21:39:05 C 15 59 10.35 -21 28 50.0 118
2001-06-22 21:41:39 C 15 59 08.28 -21 28 47.7 118
2001-06-22 21:57:04 C 15 58 56.12 -21 28 32.4 470
2001-06-22 21:58:57 C 15 58 54.61 -21 28 31.1 470
2001-06-23 05:26:44 C 15 52 53.98 -21 21 54.4 739
2001-06-23 05:28:52 C 15 52 52.13 -21 21 52.3 739
2001-06-23 05:32:28 C 15 52 49.15 -21 21 48.9 739
2001-06-23 05:33:22 C 15 52 48.37 -21 21 48.2 739
2001-06-23 10:26:16 C 15 48 45.57 -21 15 48.4 428
2001-06-23 10:27:13 C 15 48 44.74 -21 15 47.4 428
2001-06-23 10:28:09 C 15 48 43.91 -21 15 46.4 428
2001-06-23 10:29:08 C 15 48 43.08 -21 15 45.5 428
2001-06-23 10:30:05 C 15 48 42.25 -21 15 44.4 428
2001-06-23 20:54:45 C 15 39 32.15 -21 04 27.6 151
2001-06-23 20:56:17 C 15 39 30.70 -21 04 25.6 151
2001-06-23 20:58:12 C 15 39 28.96 -21 04 23.2 151
2001-06-23 21:00:13 C 15 39 27.08 -21 04 20.2 151
2001-06-23 21:04:54 C 15 39 22.76 -21 04 14.3 151
2001-06-23 21:09:00 C 15 39 18.98 -21 04 08.8 151
2001-06-23 21:17:45 C 15 39 10.90 -21 03 55.4 14.9 476
2001-06-23 21:30:15 C 15 38 59.52 -21 03 41.0 14.9 476
2001-06-23 22:11:09 C 15 38 21.58 -21 02 40.5 176
2001-06-23 22:13:49 C 15 38 19.10 -21 02 36.8 176
2001-06-23 22:16:09 C 15 38 16.93 -21 02 33.6 176
2001-06-23 22:18:20 C 15 38 14.90 -21 02 30.6 176
2001-06-23 22:20:40 C 15 38 12.73 -21 02 27.4 176
2001-06-24 04:01:29 C 15 32 55.66 -20 54 16.9 739
2001-06-24 04:04:25 C 15 32 52.80 -20 54 11.2 739
2001-06-24 04:06:28 C 15 32 50.83 -20 54 09.0 739
2001-06-24 04:49:12 C 15 32 10.56 -20 52 58.2 919
2001-06-24 04:52:38 C 15 32 07.27 -20 52 54.2 919
2001-06-24 11:52:40 C 15 25 17.06 -20 40 11.6 428
2001-06-24 11:53:26 C 15 25 16.26 -20 40 10.2 428
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)