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
1997-07-11 22:50:28 C 17 37 39.84 +00 54 42.7 z 046
1997-07-11 22:52:56 C 17 37 39.54 +00 54 44.5 z 046
1997-07-11 22:55:12 C 17 37 39.24 +00 54 45.6 z 046
1997-07-11 22:57:00 C 17 37 38.93 +00 54 47.3 z 046
1997-07-12 21:07:13 C 17 34 47.54 +01 08 31.1 z 046
1997-07-12 21:08:46 C 17 34 47.36 +01 08 31.4 z 046
1997-07-12 21:10:17 C 17 34 47.15 +01 08 33.2 z 046
1997-07-12 21:11:51 C 17 34 46.97 +01 08 33.7 z 046
1997-07-13 07:04:35 C 17 33 31.74 +01 14 30.9 a 696
1997-07-13 07:07:56 C 17 33 31.30 +01 14 32.8 a 696
1997-07-13 07:11:04 C 17 33 30.89 +01 14 34.7 a 696
1997-07-14 04:37:12 C 17 30 54.63 +01 26 40.9 a 696
1997-07-14 04:38:08 C 17 30 54.51 +01 26 41.3 a 696
1997-07-14 04:39:58 C 17 30 54.28 +01 26 42.5 a 696
1997-07-16 07:39:20 C 17 25 04.14 +01 52 29.1 a 568
1997-07-16 08:53:25 C 17 24 55.50 +01 53 03.1 a 568
1997-07-17 07:30:44 C 17 22 31.93 +02 03 04.7 a 568
1997-07-17 12:15:39 C 17 22 00.65 +02 05 04.4 a 568
1997-07-23 12:53:00 C 17 09 19.32 +02 50 54.8 360
1997-07-23 12:58:59 C 17 09 18.83 +02 50 55.8 360
1997-07-23 13:04:29 C 17 09 18.39 +02 50 57.3 360
1997-07-29 06:27:04 C 17 00 55.05 +03 11 32.4 658
1997-07-29 06:31:13 C 17 00 54.86 +03 11 32.9 658
1997-07-29 06:36:19 C 17 00 54.59 +03 11 32.9 658
1997-07-29 21:12:15 C 17 00 12.75 +03 12 40.4 557
1997-07-30 12:36:59 C 16 59 30.89 +03 13 44.1 360
1997-07-30 12:44:00 C 16 59 30.53 +03 13 44.8 360
1997-07-30 12:51:00 C 16 59 30.17 +03 13 45.0 360
1997-08-05 20:46:08 C 16 54 33.11 +03 13 54.3 557
1997-08-10 21:42:03 C 16 52 50.70 +03 04 28.5 557
1997-08-10 21:46:35 C 16 52 50.69 +03 04 28.2 557
1997-08-12 05:28:25 C 16 52 41.34 +03 00 56.5 658
1997-08-12 05:38:29 C 16 52 41.29 +03 00 55.4 658
1997-08-12 05:46:58 C 16 52 41.20 +03 00 54.4 658
1997-08-24 11:44:59 C 16 55 48.35 +02 14 30.4 360
1997-08-24 11:55:00 C 16 55 48.58 +02 14 28.1 360
1997-08-24 12:02:00 C 16 55 48.69 +02 14 26.6 360
1997-10-20 02:39:47 C 18 05 53.24 -02 17 32.4 658
1997-10-20 03:04:07 C 18 05 54.57 -02 17 37.8 658
1998-06-17 10:12:20 C 22 27 29.79 +06 37 11.4 a 696
1998-06-17 10:17:53 C 22 27 30.04 +06 37 20.0 a 696
1998-06-17 10:20:27 C 22 27 30.10 +06 37 23.5 a 696
1998-06-18 10:41:45 C 22 28 26.46 +07 12 56.0 a 696
1998-06-18 10:46:52 C 22 28 26.63 +07 13 03.6 a 696
1998-07-02 10:33:27 C 22 38 15.42 +16 20 24.4 z 683
1998-07-02 10:41:26 C 22 38 15.57 +16 20 37.3 z 683
1998-07-02 10:49:16 C 22 38 15.61 +16 20 53.2 z 683
1998-07-03 10:24:24 C 22 38 41.92 +17 03 51.9 z 683
1998-07-03 10:39:13 C 22 38 42.07 +17 04 19.7 z 683
1998-07-03 10:54:08 C 22 38 42.28 +17 04 47.4 z 683