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
2001-05-25 08:55:45 C 18 18 08.37 -20 21 13.2 17.6 c 704
2001-05-25 09:11:42 C 18 18 07.87 -20 21 13.8 17.8 c 704
2001-05-25 09:43:31 C 18 18 06.78 -20 21 16.5 18.0 c 704
2001-06-16 05:46:58 C 17 18 40.76 -21 40 04.7 14.9 c 704
2001-06-16 06:05:27 C 17 18 35.06 -21 40 09.0 15.6 c 704
2001-06-16 06:24:02 C 17 18 29.22 -21 40 13.2 14.9 c 704
2001-06-16 06:42:27 C 17 18 23.52 -21 40 18.0 14.9 c 704
2001-06-16 07:00:56 C 17 18 17.69 -21 40 21.0 15.6 c 704
2001-06-17 03:08:19 C 17 11 50.78 -21 43 59.4 860
2001-06-17 03:12:49 C 17 11 49.16 -21 43 58.4 860
2001-06-17 03:15:04 C 17 11 48.34 -21 43 59.0 860
2001-06-17 04:30:01 C 17 11 21.70 -21 44 14.2 859
2001-06-17 04:32:28 C 17 11 20.94 -21 44 14.9 859
2001-06-17 04:37:13 C 17 11 19.19 -21 44 16.1 859
2001-06-17 04:40:26 C 17 11 18.13 -21 44 17.0 859
2001-06-17 17:26:59 C 17 06 46.391 -21 46 22.60 422
2001-06-17 17:28:09 C 17 06 45.962 -21 46 22.77 422
2001-06-17 17:29:02 C 17 06 45.638 -21 46 22.91 422
2001-06-17 22:02:34 C 17 05 07.09 -21 47 59.3 165
2001-06-17 22:03:31 C 17 05 06.71 -21 47 59.8 165
2001-06-17 22:05:58 C 17 05 05.79 -21 47 59.4 165
2001-06-17 22:16:50 C 17 05 01.56 -21 48 02.7 165
2001-06-17 22:33:47 C 17 04 54.56 -21 48 07.6 557
2001-06-17 22:34:52 C 17 04 54.02 -21 48 07.4 557
2001-06-17 23:29:03 C 17 04 33.41 -21 48 12.2 620
2001-06-17 23:40:03 C 17 04 29.17 -21 48 13.4 620
2001-06-17 23:59:03 C 17 04 21.84 -21 48 16.5 620
2001-06-18 05:08:19 C 17 02 22.36 -21 49 06.0 294
2001-06-18 05:13:10 C 17 02 20.38 -21 49 06.5 294
2001-06-18 05:15:02 C 17 02 19.72 -21 49 06.8 294
2001-06-18 05:16:54 C 17 02 18.91 -21 49 07.2 294
2001-06-18 05:18:46 C 17 02 18.14 -21 49 07.4 294
2001-06-18 07:43:02 C 17 01 21.18 -21 49 24.3 919
2001-06-18 07:44:34 C 17 01 20.57 -21 49 24.6 919
2001-06-18 07:47:23 C 17 01 19.42 -21 49 24.8 919
2001-06-18 08:02:23 C 17 01 13.32 -21 49 27.3 15.7 c 704
2001-06-18 08:20:34 C 17 01 05.66 -21 49 29.0 c 704
2001-06-18 08:34:13 C 17 01 04.027 -21 48 40.43 422
2001-06-18 08:35:17 C 17 01 03.604 -21 48 40.57 422
2001-06-18 08:36:01 C 17 01 03.309 -21 48 40.70 422
2001-06-18 08:39:33 C 17 00 57.90 -21 49 30.8 13.8 c 704
2001-06-18 09:01:14 C 17 00 49.02 -21 49 32.6 13.7 c 704
2001-06-18 09:25:31 C 17 00 39.09 -21 49 35.0 14.4 c 704
2001-06-18 12:29:26 C 16 59 26.84 -21 49 22.0 428
2001-06-18 12:30:42 C 16 59 26.30 -21 49 22.2 428
2001-06-18 12:31:59 C 16 59 25.75 -21 49 22.4 428
2001-06-18 12:33:16 C 16 59 25.21 -21 49 22.5 428
2001-06-18 12:35:52 C 16 59 24.12 -21 49 23.0 428
2001-06-18 12:38:26 C 16 59 23.02 -21 49 23.2 428
2001-06-18 14:56:36 C 16 58 26.24 -21 49 37.4 322
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)