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
2019-01-23 13:32:21 C 13 21 04.25 +02 03 22.1 V T05
2019-01-23 13:44:02 C 13 21 03.51 +02 03 30.6 V T05
2019-01-23 13:55:51 C 13 21 02.64 +02 03 39.9 V T05
2019-01-29 13:48:28 C 13 10 54.41 +03 49 20.2 V T08
2019-01-29 14:00:07 C 13 10 53.54 +03 49 29.4 V T08
2019-01-29 14:11:50 C 13 10 52.59 +03 49 37.6 V T08
2019-01-29 14:23:43 C 13 10 51.66 +03 49 47.7 V T08
2019-01-31 12:08:25 C 13 07 14.70 +04 25 03.1 V 703
2019-01-31 12:14:13 C 13 07 14.09 +04 25 07.7 V 703
2019-01-31 12:20:01 C 13 07 13.70 +04 25 11.9 V 703
2019-01-31 12:25:50 C 13 07 13.19 +04 25 16.5 V 703
2019-02-02 13:55:11 C 13 03 06.44 +05 04 15.0 V T08
2019-02-02 14:19:10 C 13 03 04.33 +05 04 34.6 V T08
2019-02-02 14:32:01 C 13 03 03.13 +05 04 44.1 V T08
2019-02-02 14:36:44 C 13 03 02.73 +05 04 48.5 V T08
2019-02-04 14:03:49 C 12 58 54.15 +05 42 47.4 V T05
2019-02-04 14:18:14 C 12 58 52.80 +05 42 58.7 V T05
2019-02-04 14:31:46 C 12 58 51.57 +05 43 09.4 V T05
2019-02-04 14:41:07 C 12 58 50.73 +05 43 16.8 V T05
2019-02-04 14:47:17 C 12 58 50.14 +05 43 22.0 V T05
2019-02-06 03:53:08 C 12 55 27.98 +06 13 19.3 q 160
2019-02-06 03:56:13 C 12 55 27.67 +06 13 21.2 q 160
2019-02-06 13:33:44 C 12 54 34.41 +06 21 14.8 V T08
2019-02-06 13:47:37 C 12 54 33.07 +06 21 26.2 V T08
2019-02-06 13:55:13 C 12 54 32.35 +06 21 32.6 V T08
2019-02-06 14:00:28 C 12 54 31.86 +06 21 36.9 V T08
2019-02-06 14:12:00 C 12 54 30.75 +06 21 46.5 V T08
2019-02-06 14:13:19 C 12 54 30.64 +06 21 47.7 V T08
2019-02-06 14:19:47 C 12 54 29.98 +06 21 52.8 V T08
2019-02-06 14:25:30 C 12 54 29.44 +06 21 59.0 V T08
2019-02-07 02:53:06 C 12 53 19.62 +06 32 02.4 q 160
2019-02-07 02:56:44 C 12 53 19.28 +06 32 04.9 q 160
2019-02-07 03:00:20 C 12 53 18.94 +06 32 07.5 q 160
2019-02-09 09:53:06 C 12 48 03.23 +07 17 00.1 V 703
2019-02-09 10:00:39 C 12 48 02.48 +07 17 06.0 V 703
2019-02-09 10:08:11 C 12 48 01.72 +07 17 12.3 V 703
2019-02-09 10:15:44 C 12 48 00.97 +07 17 18.3 V 703
2019-02-11 09:52:57 C 12 43 17.24 +07 56 14.8 V G96
2019-02-11 10:00:24 C 12 43 16.50 +07 56 21.0 V G96
2019-02-11 10:07:52 C 12 43 15.73 +07 56 27.2 V G96
2019-02-11 10:15:17 C 12 43 14.96 +07 56 33.3 V G96
2019-02-14 02:23:28 C 12 36 40.60 +08 48 39.6 q 160
2019-02-14 02:26:55 C 12 36 40.21 +08 48 43.4 q 160
2019-02-14 02:30:20 C 12 36 39.88 +08 48 44.9 q 160
2019-02-14 03:07:56 C 12 36 35.91 +08 49 15.4 V C95
2019-02-14 03:09:38 C 12 36 35.75 +08 49 16.8 V C95
2019-02-14 03:11:20 C 12 36 35.54 +08 49 18.2 V C95
2019-02-14 03:13:01 C 12 36 35.38 +08 49 19.6 V C95
2019-02-14 03:14:43 C 12 36 35.26 +08 49 20.6 V C95
2019-02-14 03:16:24 C 12 36 35.03 +08 49 22.2 V C95
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)