136818 (1997 MW1)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3463386925 ± 3.01e-08
Semi-major axis (a)0.9375005404 AU ± 2.73e-09
Inclination (i)12.77777727° ± 3.24e-06
Long. of Asc. Node (Ω)259.92112272° ± 7.36e-06
Arg. of Perihelion (ω)203.83772352° ± 1.04e-05
Mean Anomaly (M)269.32122791° ± 1.72e-05
Mean Motion (n)1.0858128727°/day ± 4.75e-09
Perihelion dist (q)0.61280783 AU ± 2.83e-08
Aphelion dist (Q)1.26219325 AU ± 2.85e-08
Orbital Period0.90773126 yr ± 3.97e-09
NGA Modelr2
A24.10622782e-14 ± 3.13e-15 AU/d²
Physical Parameters
H (abs. magnitude)18.98
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.474″
Uncertainty0
Orbit TypeAten
MOID0.112651 AU
Observations Used643
Oppositions2
Arc Total1997-2019
First Observation Used1997-06-29
Last Observation Used2019-05-07
Observations (656)
Date Type RA Dec Mag Band Observatory
1998-07-05 17:06:50 C 22 39 33.88 +18 46 11.5 z 402
1998-07-05 17:10:50 C 22 39 33.92 +18 46 20.8 z 402
1998-07-05 17:14:49 C 22 39 33.95 +18 46 28.2 z 402
1998-07-18 14:33:38 C 22 39 38.94 +29 41 45.4 z 402
1998-07-18 14:35:09 C 22 39 38.94 +29 41 49.2 z 402
1998-07-18 14:36:40 C 22 39 38.88 +29 41 52.6 z 402
1998-07-20 00:01:43 C 22 39 01.37 +31 01 04.6 046
1998-07-20 00:04:24 C 22 39 01.29 +31 01 10.4 046
1998-07-20 00:05:43 C 22 39 01.23 +31 01 13.2 046
1998-07-20 00:09:44 C 22 39 01.09 +31 01 22.3 046
1998-07-20 00:11:04 C 22 39 01.09 +31 01 26.5 046
1998-07-20 00:12:23 C 22 39 01.08 +31 01 28.3 046
1998-07-20 00:14:56 C 22 39 00.97 +31 01 36.2 046
1998-07-26 09:42:34 C 22 34 00.66 +37 27 15.4 z 683
1998-07-26 09:49:35 C 22 34 00.30 +37 27 35.0 z 683
1998-07-26 09:57:07 C 22 33 59.91 +37 27 54.4 z 683
1998-07-27 07:32:51 C 22 32 58.94 +38 24 54.1 z 683
1998-07-27 07:39:34 C 22 32 58.53 +38 25 12.0 z 683
1998-07-27 07:49:20 C 22 32 58.05 +38 25 38.2 z 683
1998-07-27 07:59:18 C 22 32 57.43 +38 26 05.1 z 683
1998-07-27 08:09:24 C 22 32 56.82 +38 26 33.0 z 683
1998-07-27 08:19:20 C 22 32 56.29 +38 26 58.4 z 683
1998-08-14 22:37:04 C 21 37 23.35 +59 50 25.6 046
1998-08-14 22:38:28 C 21 37 22.98 +59 50 29.7 046
1998-08-14 22:39:35 C 21 37 22.78 +59 50 33.0 046
1998-08-14 22:40:43 C 21 37 22.38 +59 50 35.7 046
1998-08-15 00:52:50 C 21 36 47.70 +59 56 59.2 557
1998-08-15 00:54:31 C 21 36 47.31 +59 57 03.4 557
1998-08-15 00:56:15 C 21 36 46.85 +59 57 07.0 557
1998-08-20 14:24:30 C 20 53 28.77 +66 09 19.4 360
1998-08-20 14:28:30 C 20 53 26.98 +66 09 29.8 360
1998-08-20 14:37:14 C 20 53 23.13 +66 09 53.2 360
1998-08-26 04:47:16 C 19 41 13.27 +71 08 43.3 z 683
1998-08-26 05:01:11 C 19 41 03.52 +71 09 07.7 z 683
1998-08-26 05:12:31 C 19 40 55.50 +71 09 27.3 z 683
1998-08-27 05:21:33 C 19 23 58.63 +71 48 41.2 z 683
1998-08-27 05:31:07 C 19 23 51.29 +71 48 55.6 z 683
1998-08-27 05:40:18 C 19 23 44.44 +71 49 08.4 z 683
1998-08-27 05:50:28 C 19 23 36.67 +71 49 23.5 z 683
1999-07-08 13:55:58 C 01 14 27.12 +27 30 33.3 568
1999-07-08 13:59:04 C 01 14 27.63 +27 30 37.8 568
1999-07-10 13:50:37 C 01 22 47.96 +28 42 06.6 568
1999-07-10 13:54:29 C 01 22 48.64 +28 42 12.5 568
2000-07-30 14:54:21 C 05 29 39.03 +31 33 52.4 568
2000-07-31 14:57:40 C 05 36 09.30 +31 25 47.3 568
2000-07-31 15:02:38 C 05 36 10.64 +31 25 45.6 568
2005-06-18 03:51:19 C 10 32 11.61 -01 46 52.6 r G96
2005-06-18 03:55:50 C 10 32 12.58 -01 46 55.6 r G96
2005-06-18 04:00:21 C 10 32 13.59 -01 46 58.8 r G96
2005-06-18 04:04:52 C 10 32 14.60 -01 47 01.0 r G96