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
1997-06-29 08:34:09 C 18 26 18.76 -03 41 41.0 z 683
1997-06-29 11:02:48 C 18 25 50.53 -03 38 47.5 z 683
1997-06-30 05:34:37 C 18 22 29.61 -03 17 22.6 z 683
1997-06-30 10:01:37 C 18 21 38.89 -03 12 15.5 z 683
1997-06-30 17:08:25 C 18 20 21.93 -03 04 14.8 z 402
1997-06-30 17:10:25 C 18 20 21.58 -03 04 13.7 z 402
1997-06-30 17:12:25 C 18 20 21.20 -03 04 11.9 z 402
1997-07-01 04:34:56 C 18 18 20.55 -02 51 26.6 z 683
1997-07-01 04:49:09 C 18 18 18.10 -02 51 12.2 z 683
1997-07-01 05:27:16 C 18 18 10.81 -02 50 29.3 z 683
1997-07-01 05:44:07 C 18 18 07.76 -02 50 11.1 z 683
1997-07-01 07:09:54 c 18 17 51.67 -02 48 35.9 i 691
1997-07-01 07:16:30 c 18 17 50.40 -02 48 28.0 i 691
1997-07-01 13:00:35 C 18 16 49.48 -02 41 36.7 z 422
1997-07-01 13:02:09 C 18 16 49.28 -02 41 31.9 z 422
1997-07-01 13:03:17 C 18 16 48.96 -02 41 33.9 z 422
1997-07-01 13:07:40 C 18 16 48.08 -02 41 28.2 z 422
1997-07-01 13:09:15 C 18 16 47.80 -02 41 26.5 z 422
1997-07-01 13:44:36 C 18 16 41.69 -02 41 25.2 z 355
1997-07-01 13:50:53 C 18 16 40.30 -02 41 17.0 z 355
1997-07-01 20:33:40 C 18 15 29.36 -02 34 04.4 z 046
1997-07-01 20:35:55 C 18 15 29.03 -02 34 02.8 z 046
1997-07-01 20:40:05 C 18 15 28.28 -02 33 58.5 z 046
1997-07-01 21:45:00 C 18 15 16.34 -02 32 49.1 557
1997-07-01 21:47:57 C 18 15 15.80 -02 32 46.0 557
1997-07-01 21:48:32 C 18 15 15.86 -02 32 41.0 z 108
1997-07-01 21:56:03 C 18 15 14.39 -02 32 34.8 z 108
1997-07-02 06:27:02 C 18 13 44.16 -02 23 22.1 z 683
1997-07-02 06:51:27 C 18 13 39.56 -02 22 55.1 z 683
1997-07-02 07:30:46 C 18 13 32.46 -02 22 14.6 z 683
1997-07-02 14:28:00 C 18 12 19.59 -02 14 55.7 z 355
1997-07-02 14:36:02 C 18 12 18.16 -02 14 46.1 z 355
1997-07-03 06:03:55 C 18 09 37.89 -01 58 50.8 658
1997-07-03 06:05:25 C 18 09 37.65 -01 58 49.2 658
1997-07-03 06:06:53 C 18 09 37.39 -01 58 47.9 658
1997-07-03 06:08:22 C 18 09 37.15 -01 58 46.3 658
1997-07-03 09:57:17 C 18 08 57.14 -01 54 39.3 a 568
1997-07-03 10:03:01 C 18 08 56.07 -01 54 33.4 a 568
1997-07-03 10:09:17 C 18 08 55.02 -01 54 27.4 a 568
1997-07-03 16:32:19 C 18 07 48.30 -01 47 31.2 z 422
1997-07-03 16:46:05 C 18 07 45.84 -01 47 17.2 z 422
1997-07-03 16:51:16 C 18 07 44.95 -01 47 12.4 z 422
1997-07-03 17:18:30 C 18 07 40.20 -01 46 44.0 z 422
1997-07-03 20:44:00 C 18 07 07.57 -01 43 59.7 z 104
1997-07-03 20:57:04 C 18 07 05.32 -01 43 46.5 z 104
1997-07-03 21:05:04 C 18 07 03.94 -01 43 38.8 z 104
1997-07-03 21:17:30 C 18 07 01.44 -01 43 28.9 z 046
1997-07-03 21:22:44 C 18 07 00.52 -01 43 22.8 z 046
1997-07-03 21:25:54 C 18 07 00.03 -01 43 20.5 z 046
1997-07-03 21:37:03 C 18 06 58.08 -01 43 09.6 z 473