128P

⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2016-02-17 (JD 2457435.5)
Eccentricity (e)0.3214554998 ± 8.22e-08
Semi-major axis (a)4.5033596168 AU ± 3.38e-08
Inclination (i)4.36391215° ± 1.02e-05
Long. of Asc. Node (Ω)214.29384887° ± 8.48e-05
Arg. of Perihelion (ω)210.57891677° ± 9.84e-05
Mean Anomaly (M)326.09282825° ± 2.60e-05
Mean Motion (n)0.1031352991°/day ± 1.16e-09
Perihelion dist (q)3.05572990 AU ± 3.71e-07
Aphelion dist (Q)5.95098933 AU ± 3.73e-07
Orbital Period9.55663378 yr ± 1.08e-07
NGA Modelg(r)
A2-3.00005824e-09 ± 9.82e-11 AU/d²
Orbit Solution
SourceIAA
Solution Date2026-05-30
RMS Residual0.769″
Uncertainty0
Orbit TypeMBA
MOID2.068882 AU
Observations Used1083
Oppositions34
Arc Total1987-2025
First Observation Used1987-09-24
Last Observation Used2025-12-25
Observations (1161)
Date Type RA Dec Mag Band Observatory
1987-09-24 09:12:59 A 01 24 18.46 +10 51 42.2 675
1987-09-24 09:58:30 A 01 24 17.48 +10 51 36.4 675
1987-10-02 23:07:30 A 01 19 51.48 +10 16 59.2 095
1987-10-18 08:02:44 A 01 10 44.89 +09 04 03.8 675
1987-10-19 11:31:29 A 01 10 03.62 +08 58 23.6 675
1987-10-20 06:43:59 A 01 09 35.12 +08 54 25.7 675
1987-10-20 08:01:35 A 01 09 33.12 +08 54 05.8 657
1987-10-21 06:19:05 A 01 09 00.30 +08 49 30.5 657
1987-10-21 07:05:06 A 01 08 59.21 +08 49 24.2 657
1987-10-21 08:29:44 A 01 08 56.87 +08 49 06.4 675
1987-10-21 16:07:59 A 01 08 45.85 +08 47 31.4 372
1987-10-21 16:25:00 A 01 08 45.60 +08 47 28.6 372
1987-10-22 03:25:24 A 01 08 29.33 +08 45 12.1 A 801
1987-10-22 06:05:12 A 01 08 25.37 +08 44 39.3 A 801
1987-10-23 04:56:15 A 01 07 52.10 +08 39 58.5 A 801
1987-10-23 17:19:00 A 01 07 33.87 +08 37 26.4 399
1987-10-23 17:41:00 A 01 07 33.48 +08 37 22.6 399
1987-10-24 06:04:02 A 01 07 15.79 +08 34 50.8 A 801
1987-10-26 08:07:50 A 01 06 04.99 +08 24 45.2 B 691
1987-10-26 08:32:45 A 01 06 04.38 +08 24 40.0 B 691
1987-10-26 08:38:30 A 01 06 04.23 +08 24 38.8 B 691
1987-10-27 15:53:00 A 01 05 21.09 +08 18 31.0 372
1987-10-27 16:24:29 A 01 05 20.39 +08 18 26.8 372
1987-10-28 17:44:00 A 01 04 46.25 +08 13 16.6 372
1987-10-28 18:00:00 A 01 04 45.65 +08 13 13.0 372
1987-11-14 18:31:09 A 00 57 28.12 +07 03 29.4 046
1987-11-14 18:49:09 A 00 57 27.76 +07 03 29.8 046
1987-11-15 19:03:14 A 00 57 10.10 +07 00 10.9 046
1987-11-15 19:19:44 A 00 57 09.90 +07 00 08.2 046
1987-11-16 04:54:40 A 00 57 03.21 +06 58 52.4 B 691
1987-11-16 05:07:35 A 00 57 03.06 +06 58 51.3 B 691
1987-11-17 03:03:56 A 00 56 48.37 +06 55 58.0 A 801
1987-11-20 10:56:00 A 00 56 03.19 +06 46 30.5 372
1987-11-20 11:16:45 A 00 56 03.05 +06 46 26.8 372
1987-11-22 11:00:09 A 00 55 41.73 +06 41 26.7 897
1987-11-22 12:44:14 A 00 55 40.99 +06 41 15.7 897
1987-11-23 05:19:59 A 00 55 34.82 +06 39 37.2 675
1987-11-23 06:00:00 A 00 55 34.60 +06 39 32.9 675
1987-11-24 05:44:28 A 00 55 26.62 +06 37 20.5 B 691
1987-11-24 06:01:39 A 00 55 26.49 +06 37 19.5 B 691
1987-11-24 10:06:39 A 00 55 25.60 +06 36 59.1 897
1987-11-24 11:04:49 A 00 55 25.30 +06 36 55.0 897
1987-11-25 18:39:10 A 00 55 16.86 +06 34 07.3 046
1987-11-25 19:02:45 A 00 55 16.80 +06 34 07.3 046
1987-12-19 00:34:07 A 00 58 28.98 +06 23 59.9 A 801
1987-12-21 20:03:00 A 00 59 35.35 +06 27 31.5 026
1987-12-23 03:05:06 A 01 00 08.54 +06 29 28.6 B 691
1987-12-23 03:41:50 A 01 00 09.18 +06 29 30.9 B 691
1987-12-24 00:10:23 A 01 00 32.12 +06 30 55.0 A 801
1988-01-20 10:07:45 A 01 19 16.47 +07 57 40.6 381