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
1998-01-27 10:59:30 C 02 30 57.07 +34 30 40.5 360
1998-01-28 05:11:17 C 02 32 02.96 +34 52 39.1 c 566
1998-01-28 05:30:59 C 02 32 03.96 +34 53 01.9 c 566
1998-02-01 17:52:08 C 02 39 31.80 +37 04 56.3 046
1998-02-01 17:55:01 C 02 39 31.99 +37 05 00.0 046
1998-02-01 17:57:41 C 02 39 32.25 +37 05 03.8 046
1998-02-01 18:09:59 C 02 39 33.00 +37 05 17.8 557
1998-02-01 18:17:29 C 02 39 33.56 +37 05 27.0 557
1998-02-08 19:00:09 C 02 54 34.44 +40 36 55.0 046
1998-02-08 19:06:31 C 02 54 34.97 +40 37 02.7 046
1998-02-08 19:09:13 C 02 54 35.32 +40 37 07.3 046
1998-02-08 19:11:52 C 02 54 35.56 +40 37 09.9 046
1998-02-23 19:39:37 C 03 43 19.95 +48 11 45.8 557
1998-02-23 19:45:19 C 03 43 20.84 +48 11 52.0 557
1998-02-27 19:17:57 C 04 01 11.47 +50 05 19.5 z 118
1998-02-27 19:28:26 C 04 01 13.50 +50 05 30.8 z 118
1998-03-03 03:10:21 C 04 18 05.38 +51 34 38.3 z 711
1998-03-04 02:55:21 C 04 23 29.53 +51 59 51.8 z 711
1998-03-04 03:04:14 C 04 23 31.50 +52 00 00.8 z 711
1998-03-05 02:57:30 C 04 29 08.28 +52 24 37.8 z 711
1998-03-11 21:24:44 C 05 12 14.64 +54 46 41.9 z 118
1998-03-11 21:34:33 C 05 12 17.63 +54 46 48.0 z 118
1998-03-17 05:56:47 C 05 52 22.72 +55 55 58.7 658
1998-03-17 05:59:30 C 05 52 23.55 +55 55 59.4 658
1998-03-17 06:01:53 C 05 52 24.35 +55 56 00.1 658
1998-03-19 07:01:20 C 06 08 54.77 +56 08 52.4 658
1998-03-19 07:09:03 C 06 08 57.40 +56 08 54.0 658
1998-03-19 07:14:38 C 06 08 59.35 +56 08 54.0 658
1998-03-23 19:58:53 C 06 47 19.26 +56 05 59.8 557
1998-03-23 20:01:13 C 06 47 20.07 +56 05 59.7 557
1998-03-23 20:03:33 C 06 47 20.83 +56 05 58.6 557
1998-03-23 20:41:58 C 06 47 34.26 +56 05 47.6 z 118
1998-03-23 20:49:09 C 06 47 36.78 +56 05 45.4 z 118
1998-03-28 04:48:19 C 07 25 11.99 +55 17 32.9 658
1998-03-28 04:53:43 C 07 25 13.93 +55 17 28.9 658
1998-03-28 04:57:06 C 07 25 15.08 +55 17 26.2 658
1998-04-08 20:39:02 C 08 59 07.52 +49 28 10.5 557
1998-04-08 20:42:24 C 08 59 08.53 +49 28 04.5 557
1998-04-08 20:45:46 C 08 59 09.53 +49 27 58.0 557
1998-04-08 20:59:13 C 08 59 13.31 +49 27 34.1 557
1998-04-09 20:43:04 C 09 06 14.31 +48 45 10.4 046
1998-04-09 20:47:50 C 09 06 15.70 +48 45 00.8 046
1998-04-09 20:55:16 C 09 06 17.85 +48 44 47.4 046
1998-04-09 20:56:44 C 09 06 18.20 +48 44 44.9 046
1998-04-09 20:59:02 C 09 06 18.85 +48 44 40.8 046
1998-04-09 21:41:06 C 09 06 30.73 +48 43 22.2 118
1998-04-09 21:44:33 C 09 06 31.70 +48 43 16.3 118
1998-04-16 06:47:34 C 09 47 29.02 +43 35 20.6 658
1998-04-16 06:54:35 C 09 47 30.46 +43 35 06.5 658
1998-04-16 07:01:05 C 09 47 32.16 +43 34 51.4 658