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
2019-04-02 10:25:23 C 10 56 24.32 +17 22 48.3 V T05
2019-04-03 05:27:14 C 10 55 32.80 +17 23 49.8 V G96
2019-04-03 05:34:43 C 10 55 32.46 +17 23 50.1 V G96
2019-04-03 05:42:12 C 10 55 32.10 +17 23 50.5 V G96
2019-04-03 05:49:40 C 10 55 31.76 +17 23 50.8 V G96
2019-04-03 06:04:09 C 10 55 31.390 +17 23 52.42 U F51
2019-04-03 06:22:45 C 10 55 30.536 +17 23 53.40 U F51
2019-04-03 06:41:27 C 10 55 29.678 +17 23 54.41 U F51
2019-04-03 14:59:16 C 10 55 07.51 +17 24 16.9 q D29
2019-04-03 15:26:33 C 10 55 06.28 +17 24 18.1 q D29
2019-04-04 06:11:13 C 10 54 28.30 +17 24 54.6 V 703
2019-04-04 06:18:46 C 10 54 27.88 +17 24 56.2 V 703
2019-04-04 06:26:18 C 10 54 27.62 +17 24 55.4 V 703
2019-04-04 06:33:51 C 10 54 27.26 +17 24 55.3 V 703
2022-04-23 12:06:19 C 15 19 18.667 -13 03 59.92 U F52
2022-04-23 12:23:50 C 15 19 17.921 -13 03 57.04 U F52
2022-04-23 12:41:22 C 15 19 17.149 -13 03 53.16 U F52
2022-04-23 12:58:54 C 15 19 16.396 -13 03 50.19 U F52
2022-05-04 08:07:56 C 15 07 30.104 -12 14 25.84 V G96
2022-05-04 08:15:25 C 15 07 29.737 -12 14 24.68 V G96
2022-05-04 08:22:53 C 15 07 29.381 -12 14 23.06 V G96
2022-05-04 08:30:19 C 15 07 29.017 -12 14 20.83 V G96
2022-05-09 10:19:39 C 15 01 32.424 -11 50 01.62 U F52
2022-05-09 10:37:16 C 15 01 31.528 -11 49 58.14 U F52
2022-05-09 10:54:55 C 15 01 30.635 -11 49 54.43 U F52
2022-05-22 05:43:22 C 14 46 15.992 -10 49 19.56 V G96
2022-05-22 05:51:24 C 14 46 15.589 -10 49 17.87 V G96
2022-05-22 05:59:25 C 14 46 15.150 -10 49 16.54 V G96
2022-05-22 06:07:27 C 14 46 14.768 -10 49 14.95 V G96
2022-05-28 03:31:43 C 14 39 27.090 -10 23 15.32 V G96
2022-05-28 03:39:51 C 14 39 26.669 -10 23 13.02 V G96
2022-05-28 03:47:58 C 14 39 26.302 -10 23 12.59 V G96
2022-05-28 03:56:05 C 14 39 25.898 -10 23 10.46 V G96
2022-06-02 06:54:22 C 14 33 49.301 -10 02 23.98 U F52
2022-06-02 07:10:08 C 14 33 48.612 -10 02 21.56 U F52
2022-06-02 07:41:34 C 14 33 47.178 -10 02 16.65 U F52
2023-03-31 02:43:46 C 04 20 06.616 +26 30 55.55 V 703
2023-03-31 02:51:24 C 04 20 09.434 +26 31 03.47 V 703
2023-03-31 02:59:01 C 04 20 12.275 +26 31 12.40 V 703
2023-03-31 03:06:39 C 04 20 15.079 +26 31 21.58 V 703
2023-04-01 11:34:08 C 04 32 12.77 +27 06 29.1 V D29
2023-04-01 11:51:50 C 04 32 19.25 +27 06 46.6 V D29
2023-04-01 12:09:32 C 04 32 25.60 +27 07 04.2 V D29
2023-04-19 03:00:41 C 06 41 44.297 +29 06 57.67 V 703
2023-04-19 03:17:24 C 06 41 48.289 +29 06 52.63 V 703
2023-04-19 03:25:45 C 06 41 50.219 +29 06 52.13 V 703
2023-04-23 03:09:26 C 07 03 44.762 +28 40 53.58 V 703
2023-04-23 03:17:47 C 07 03 46.494 +28 40 51.24 V 703
2023-04-23 03:26:07 C 07 03 48.337 +28 40 47.71 V 703
2024-03-07 18:19:14 C 13 23 57.093 -01 00 40.74 O18
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)