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
2019-02-15 01:47:16 C 12 34 13.96 +09 07 29.2 q 160
2019-02-15 01:51:01 C 12 34 13.49 +09 07 32.7 q 160
2019-02-15 01:54:50 C 12 34 13.06 +09 07 36.2 q 160
2019-02-15 23:17:04 C 12 31 57.97 +09 24 41.5 o L52
2019-02-15 23:35:53 C 12 31 55.93 +09 24 55.9 o L52
2019-02-15 23:55:51 C 12 31 54.04 +09 25 12.0 q C95
2019-02-15 23:58:14 C 12 31 53.76 +09 25 13.9 q C95
2019-02-16 00:01:13 C 12 31 53.44 +09 25 16.4 q C95
2019-02-16 00:16:49 C 12 31 51.42 +09 25 28.7 o L52
2019-02-16 00:35:40 C 12 31 49.43 +09 25 43.9 o L52
2019-02-16 00:46:40 C 12 31 48.30 +09 25 53.2 o L52
2019-02-16 02:55:54 C 12 31 34.50 +09 27 36.0 q 160
2019-02-16 02:59:33 C 12 31 34.14 +09 27 38.5 q 160
2019-02-16 03:03:10 C 12 31 33.77 +09 27 41.6 q 160
2019-02-17 02:43:25 C 12 29 02.69 +09 46 26.0 q 160
2019-02-17 02:46:45 C 12 29 02.28 +09 46 29.2 q 160
2019-02-17 02:50:03 C 12 29 01.98 +09 46 31.4 q 160
2019-02-23 11:58:49 C 12 12 27.79 +11 42 20.0 V T08
2019-02-23 12:20:59 C 12 12 25.32 +11 42 35.4 V T08
2019-02-23 12:29:40 C 12 12 24.37 +11 42 42.0 V T08
2019-02-23 12:48:44 C 12 12 22.28 +11 42 55.5 V T08
2019-02-26 02:05:20 C 12 05 43.27 +12 25 37.4 18.0 q J43
2019-02-26 02:17:36 C 12 05 41.91 +12 25 45.7 18.0 q J43
2019-02-26 02:29:49 C 12 05 40.55 +12 25 54.0 18.1 q J43
2019-02-26 02:42:04 C 12 05 39.21 +12 26 02.3 18.0 q J43
2019-02-26 12:21:38 C 12 04 36.23 +12 32 31.9 V G96
2019-02-26 12:31:51 C 12 04 35.11 +12 32 38.7 V G96
2019-02-26 12:48:32 C 12 04 33.26 +12 32 49.0 V G96
2019-02-26 12:55:57 C 12 04 32.48 +12 32 54.7 V G96
2019-03-01 08:01:21 C 11 57 21.87 +13 16 17.3 V 703
2019-03-01 08:08:52 C 11 57 21.06 +13 16 22.1 V 703
2019-03-01 08:16:24 C 11 57 20.25 +13 16 26.6 V 703
2019-03-01 08:23:55 C 11 57 19.44 +13 16 31.6 V 703
2019-03-03 11:20:28 C 11 51 58.11 +13 47 13.4 V T08
2019-03-03 11:42:47 C 11 51 55.68 +13 47 26.4 V T08
2019-03-03 11:52:31 C 11 51 54.70 +13 47 31.7 V T08
2019-03-03 12:09:31 C 11 51 52.86 +13 47 41.6 V T08
2019-03-03 17:00:50 C 11 51 22.73 +13 50 28.6 q D29
2019-03-03 17:21:12 C 11 51 20.56 +13 50 40.3 q D29
2019-03-03 17:41:34 C 11 51 18.40 +13 50 52.1 q D29
2019-03-03 17:48:21 C 11 51 17.68 +13 50 56.0 q D29
2019-03-03 18:08:43 C 11 51 15.52 +13 51 07.7 q D29
2019-03-03 18:29:05 C 11 51 13.37 +13 51 19.4 q D29
2019-03-05 07:43:27 C 11 47 23.85 +14 12 13.5 V 703
2019-03-05 07:51:03 C 11 47 23.05 +14 12 18.1 V 703
2019-03-05 07:58:39 C 11 47 22.26 +14 12 22.0 V 703
2019-03-05 08:06:15 C 11 47 21.49 +14 12 26.5 V 703
2019-03-07 11:45:57 C 11 42 10.16 +14 39 33.8 V T08
2019-03-07 11:53:18 C 11 42 09.43 +14 39 37.4 V T08
2019-03-07 12:15:44 C 11 42 07.14 +14 39 48.9 V T08
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)