136839 (1997 WT22)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3057994444 ± 2.30e-08
Semi-major axis (a)1.4853820888 AU ± 9.01e-10
Inclination (i)8.15876885° ± 3.05e-06
Long. of Asc. Node (Ω)71.90256758° ± 1.39e-05
Arg. of Perihelion (ω)74.82997435° ± 1.49e-05
Mean Anomaly (M)111.77247506° ± 5.89e-06
Mean Motion (n)0.5444462389°/day ± 4.95e-10
Perihelion dist (q)1.03115307 AU ± 3.42e-08
Aphelion dist (Q)1.93961111 AU ± 3.42e-08
Orbital Period1.81032802 yr ± 1.65e-09
Physical Parameters
H (abs. magnitude)18.85
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.386″
Uncertainty0
Orbit TypeAmor
MOID0.130344 AU
Observations Used496
Oppositions17
Arc Total1988-2025
First Observation Used1988-12-13
Last Observation Used2025-01-29
Observations (573)
Date Type RA Dec Mag Band Observatory
1997-12-22 01:48:21 C 02 31 18.34 +19 22 57.0 658
1997-12-22 01:52:03 C 02 31 18.09 +19 23 00.3 658
1997-12-22 02:09:16 C 02 31 16.97 +19 23 15.3 658
1997-12-24 20:09:54 C 02 27 33.13 +20 21 02.2 z 104
1997-12-24 20:14:00 C 02 27 32.92 +20 21 06.3 z 104
1997-12-24 20:33:59 C 02 27 31.71 +20 21 23.4 z 104
1997-12-25 08:24:34 C 02 26 54.99 +20 32 08.2 c 566
1997-12-25 08:38:44 C 02 26 54.19 +20 32 20.8 c 566
1997-12-25 08:52:54 C 02 26 53.35 +20 32 32.6 c 566
1997-12-25 11:22:00 C 02 26 46.94 +20 34 40.6 z 402
1997-12-25 11:25:01 C 02 26 46.77 +20 34 42.9 z 402
1997-12-25 11:28:01 C 02 26 46.59 +20 34 45.6 z 402
1997-12-27 03:45:05 C 02 24 53.36 +21 11 06.6 658
1997-12-27 03:49:41 C 02 24 53.16 +21 11 09.4 658
1997-12-27 04:00:41 C 02 24 52.59 +21 11 20.5 658
1997-12-27 20:46:09 C 02 24 08.84 +21 26 44.8 z 587
1997-12-30 09:02:32 C 02 21 52.44 +22 23 13.0 c 566
1997-12-30 09:17:43 C 02 21 51.84 +22 23 27.0 c 566
1997-12-30 09:32:31 C 02 21 51.27 +22 23 40.7 c 566
1997-12-31 18:44:32 C 02 20 51.64 +22 55 09.9 046
1997-12-31 18:48:06 C 02 20 51.52 +22 55 13.3 046
1997-12-31 18:52:38 C 02 20 51.38 +22 55 17.8 046
1998-01-10 04:40:09 C 02 18 05.31 +26 42 54.0 658
1998-01-10 04:45:39 C 02 18 05.30 +26 42 59.6 658
1998-01-10 04:53:19 C 02 18 05.26 +26 43 06.6 658
1998-01-10 18:24:57 C 02 18 09.36 +26 57 25.3 557
1998-01-10 18:42:23 C 02 18 09.39 +26 57 43.7 557
1998-01-10 18:57:24 C 02 18 09.32 +26 58 00.3 z 118
1998-01-10 19:00:57 C 02 18 09.33 +26 58 03.2 557
1998-01-10 19:02:21 C 02 18 09.32 +26 58 05.7 z 118
1998-01-10 19:08:21 C 02 18 09.30 +26 58 11.8 z 118
1998-01-11 04:31:26 C 02 18 12.65 +27 08 08.7 658
1998-01-11 04:38:46 C 02 18 12.70 +27 08 16.2 658
1998-01-11 04:48:58 C 02 18 12.71 +27 08 27.4 658
1998-01-15 19:13:22 C 02 19 46.54 +29 08 07.8 z 118
1998-01-15 19:19:07 C 02 19 46.62 +29 08 14.0 z 118
1998-01-15 19:22:37 C 02 19 46.67 +29 08 17.8 z 118
1998-01-18 19:09:22 C 02 21 39.59 +30 28 30.0 z 118
1998-01-18 19:12:49 C 02 21 39.68 +30 28 34.0 z 118
1998-01-18 19:18:07 C 02 21 39.86 +30 28 40.1 z 118
1998-01-24 05:54:09 C 02 26 49.96 +32 59 21.9 c 566
1998-01-24 06:09:19 C 02 26 50.56 +32 59 39.0 c 566
1998-01-24 06:24:52 C 02 26 51.18 +32 59 56.8 c 566
1998-01-24 16:45:27 C 02 27 22.68 +33 11 53.6 z 118
1998-01-24 16:47:59 C 02 27 22.80 +33 11 56.7 z 118
1998-01-24 16:53:03 C 02 27 23.02 +33 12 02.9 z 118
1998-01-26 19:49:45 C 02 30 04.46 +34 12 24.1 z 118
1998-01-26 20:02:05 C 02 30 05.06 +34 12 38.2 z 118
1998-01-27 10:46:30 C 02 30 56.42 +34 30 25.0 360
1998-01-27 10:52:59 C 02 30 56.68 +34 30 32.6 360