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
2024-03-07 19:18:26 C 13 23 55.153 -01 00 26.51 O18
2024-03-10 18:02:00 C 13 21 35.933 -00 43 22.83 O18
2024-03-10 19:01:12 C 13 21 33.895 -00 43 08.43 O18
2024-03-10 19:03:14 C 13 21 33.861 -00 43 08.31 O18
2024-03-19 17:20:27 C 13 13 56.094 +00 10 09.66 O18
2024-03-19 19:10:24 C 13 13 51.918 +00 10 37.37 O18
2024-03-29 16:44:08 C 13 04 44.440 +01 09 47.47 O18
2024-03-29 17:39:26 C 13 04 42.248 +01 10 00.21 O18
2024-03-30 17:13:53 C 13 03 46.907 +01 15 44.42 O18
2024-03-30 18:09:35 C 13 03 44.668 +01 15 58.30 O18
2024-04-12 07:49:05 C 12 52 04.415 +02 24 32.40 V G96
2024-04-12 07:56:33 C 12 52 04.109 +02 24 33.66 V G96
2024-04-12 08:04:04 C 12 52 03.828 +02 24 35.06 V G96
2024-04-12 08:11:33 C 12 52 03.598 +02 24 37.26 V G96
2025-01-07 13:24:11 C 14 17 51.314 -08 30 48.39 V G37
2025-03-25 09:05:25 C 14 07 12.645 -06 16 40.80 V G37
2025-03-25 09:12:19 C 14 07 12.455 -06 16 39.60 V G37
2025-05-31 07:34:15 C 13 20 43.935 -02 17 11.09 V G37
2025-05-31 07:42:40 C 13 20 43.778 -02 17 10.24 V G37
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)