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
2006-03-27 05:14:27 C 10 18 51.92 +21 33 37.3 r H85
2006-03-29 04:57:38 C 10 17 11.18 +21 28 32.6 19.2 c 704
2006-03-29 05:13:18 C 10 17 10.56 +21 28 30.7 19.4 c 704
2006-03-29 05:28:52 C 10 17 10.13 +21 28 28.3 19.4 c 704
2006-03-29 05:44:27 C 10 17 09.50 +21 28 27.1 19.2 c 704
2006-03-31 03:39:00 C 10 15 45.98 +21 22 46.0 c 699
2006-03-31 04:15:45 C 10 15 44.89 +21 22 41.6 c 699
2006-03-31 04:52:39 C 10 15 43.82 +21 22 37.2 c 699
2006-03-31 05:29:30 C 10 15 42.59 +21 22 32.8 c 699
2014-04-18 07:24:35 C 18 53 37.78 -20 28 36.3 u 807
2014-04-18 07:32:35 C 18 53 38.35 -20 28 35.9 u 807
2014-04-18 07:40:35 C 18 53 38.90 -20 28 35.1 u 807
2014-05-25 12:49:56 C 20 36 26.537 -17 27 50.72 L F51
2014-05-25 13:20:29 C 20 36 33.368 -17 27 33.43 L F51
2014-05-25 13:35:50 C 20 36 36.798 -17 27 24.55 L F51
2014-05-28 10:34:24 C 20 54 00.95 -16 40 47.7 q 703
2014-05-28 10:43:17 C 20 54 03.34 -16 40 40.5 q 703
2014-05-28 10:52:10 C 20 54 05.81 -16 40 33.3 q 703
2014-05-28 11:01:06 C 20 54 08.25 -16 40 26.5 q 703
2014-06-09 17:05:29 S 23 12 32.467 -07 32 06.97 L C51
2014-06-09 18:40:17 S 23 13 41.674 -07 26 26.12 L C51
2014-06-09 20:14:54 S 23 14 51.014 -07 20 44.27 L C51
2014-06-09 21:49:42 S 23 16 00.804 -07 14 59.03 L C51
2014-06-10 10:45:00 C 23 25 43.32 -06 26 55.9 q 703
2014-06-10 10:49:19 C 23 25 46.64 -06 26 40.1 q 703
2014-06-10 10:53:39 C 23 25 49.90 -06 26 23.4 q 703
2014-06-10 10:57:59 C 23 25 53.17 -06 26 06.9 q 703
2014-06-10 23:57:59 C 23 35 56.44 -05 35 05.2 q 089
2014-06-11 00:03:59 C 23 36 01.10 -05 34 40.4 q 089
2014-06-11 00:06:59 C 23 36 03.54 -05 34 28.4 q 089
2014-06-11 00:09:59 C 23 36 05.79 -05 34 15.8 q 089
2014-06-11 00:12:59 C 23 36 08.24 -05 34 05.1 q 089
2014-06-11 00:15:59 C 23 36 10.54 -05 33 52.8 q 089
2015-02-18 10:03:26 C 13 03 13.12 +01 49 22.2 o 691
2015-02-18 10:30:54 C 13 03 12.05 +01 49 30.7 o 691
2015-02-18 10:58:22 C 13 03 11.06 +01 49 39.6 o 691
2015-02-19 12:21:01 C 13 02 13.814 +01 57 55.87 L F51
2015-02-19 12:38:56 C 13 02 13.114 +01 58 01.66 L F51
2015-02-19 13:14:54 C 13 02 11.710 +01 58 13.56 L F51
2015-02-26 10:53:30 C 12 55 20.35 +02 54 33.0 o 691
2015-02-26 11:21:08 C 12 55 19.10 +02 54 42.2 o 691
2015-02-26 11:48:46 C 12 55 17.83 +02 54 51.9 o 691
2015-03-16 09:13:23 C 12 34 01.32 +05 27 46.0 q 703
2015-03-16 09:39:43 C 12 33 59.94 +05 27 56.7 q 703
2015-03-22 08:17:07 C 12 26 28.87 +06 15 43.1 q G96
2015-03-22 08:23:44 C 12 26 28.51 +06 15 45.1 q G96
2015-03-22 08:30:20 C 12 26 28.15 +06 15 47.6 q G96
2015-03-22 08:36:55 C 12 26 27.82 +06 15 49.6 q G96
2015-03-23 11:36:43 C 12 25 02.986 +06 24 29.15 L F51
2015-03-23 11:54:48 C 12 25 02.021 +06 24 34.93 L F51
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)