171P

⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2018-04-24 (JD 2458232.5)
Eccentricity (e)0.5019570017 ± 1.25e-07
Semi-major axis (a)3.5582083748 AU ± 6.48e-08
Inclination (i)21.93292046° ± 1.57e-05
Long. of Asc. Node (Ω)101.69970629° ± 2.31e-05
Arg. of Perihelion (ω)347.16355376° ± 8.33e-05
Mean Anomaly (M)321.12416402° ± 2.51e-05
Mean Motion (n)0.1468470444°/day ± 4.01e-09
Perihelion dist (q)1.77214077 AU ± 4.47e-07
Aphelion dist (Q)5.34427598 AU ± 4.57e-07
Orbital Period6.71192456 yr ± 1.83e-07
NGA Modelg(r)
A1-1.59975403e-09 ± 1.57e-10 AU/d²
A2-1.79469031e-09 ± 1.14e-12 AU/d²
Orbit Solution
SourceIAA
Solution Date2026-05-30
RMS Residual0.842″
Uncertainty0
Orbit TypeMBA
MOID0.793125 AU
Observations Used904
Oppositions24
Arc Total1998-2026
First Observation Used1998-11-13
Last Observation Used2025-09-30
Observations (960)
Date Type RA Dec Mag Band Observatory
1998-12-27 12:12:24 C 04 01 57.29 +02 02 27.9 900
1998-12-27 12:30:42 C 04 01 56.98 +02 02 48.6 900
1998-12-28 14:47:06 C 04 01 34.04 +02 32 22.4 402
1998-12-28 14:49:06 C 04 01 34.00 +02 32 25.2 402
1998-12-28 14:51:06 C 04 01 33.98 +02 32 27.2 402
1998-12-28 19:02:28 C 04 01 31.10 +02 37 09.1 046
1998-12-28 19:06:10 C 04 01 31.04 +02 37 13.1 046
1998-12-28 19:07:54 C 04 01 31.02 +02 37 15.4 046
1999-01-04 21:23:17 C 04 00 16.64 +05 52 05.7 587
1999-01-04 21:26:58 C 04 00 16.65 +05 52 09.5 587
1999-01-05 11:19:20 C 04 00 16.28 +06 08 10.7 402
1999-01-05 11:21:39 C 04 00 16.29 +06 08 13.3 402
1999-01-05 11:23:55 C 04 00 16.27 +06 08 15.8 402
1999-01-05 18:01:28 C 04 00 16.44 +06 15 52.3 118
1999-01-05 18:10:41 C 04 00 16.42 +06 16 02.6 118
1999-01-07 05:36:00 C 04 00 19.48 +06 56 52.8 z 704
1999-01-07 05:50:54 C 04 00 19.42 +06 57 11.0 z 704
1999-01-07 06:05:49 C 04 00 19.48 +06 57 28.2 z 704
1999-01-07 06:20:43 C 04 00 19.48 +06 57 44.8 z 704
1999-01-07 06:35:32 C 04 00 19.50 +06 58 02.1 z 704
1999-01-07 14:12:10 C 04 00 20.94 +07 06 48.2 897
1999-01-07 14:30:21 C 04 00 21.02 +07 07 08.2 897
1999-01-09 12:37:36 C 04 00 35.75 +08 00 08.7 355
1999-01-09 13:08:38 C 04 00 35.90 +08 00 44.4 355
1999-01-09 13:14:57 C 04 00 35.93 +08 00 51.5 355
1999-01-10 05:16:48 C 04 00 43.30 +08 19 14.0 a 699
1999-01-10 05:56:44 C 04 00 43.55 +08 19 59.5 a 699
1999-01-10 06:33:28 C 04 00 43.85 +08 20 41.6 a 699
1999-01-11 12:28:20 C 04 01 00.72 +08 54 56.3 351
1999-01-11 12:34:03 C 04 01 00.96 +08 55 00.7 351
1999-01-13 13:37:44 C 04 01 36.95 +09 50 49.2 360
1999-01-13 13:41:30 C 04 01 36.98 +09 50 53.7 360
1999-01-14 05:06:08 c 04 01 50.71 +10 08 19.4 691
1999-01-14 05:11:55 c 04 01 50.78 +10 08 26.0 691
1999-01-14 05:17:41 c 04 01 50.87 +10 08 32.3 691
1999-01-17 13:23:02 C 04 03 18.64 +11 38 16.5 402
1999-01-17 13:26:04 C 04 03 18.70 +11 38 19.7 402
1999-01-17 13:29:03 C 04 03 18.74 +11 38 23.2 402
1999-01-17 19:42:59 C 04 03 27.11 +11 45 17.3 113
1999-01-17 20:13:55 C 04 03 27.74 +11 45 51.4 113
1999-01-21 12:35:59 C 04 05 39.94 +13 22 41.4 360
1999-01-21 12:39:29 C 04 05 40.03 +13 22 45.1 360
1999-01-21 18:26:57 C 04 05 50.13 +13 28 59.1 046
1999-01-21 18:30:19 C 04 05 50.22 +13 29 02.9 046
1999-01-21 18:31:58 C 04 05 50.26 +13 29 04.5 046
1999-01-22 12:20:04 C 04 06 21.32 +13 48 15.6 355
1999-01-22 12:24:13 C 04 06 21.43 +13 48 20.9 355
1999-01-22 12:29:40 C 04 06 21.58 +13 48 26.2 355
1999-01-23 05:03:38 C 04 06 51.77 +14 06 10.0 c 699
1999-01-23 05:29:18 C 04 06 52.61 +14 06 37.1 c 699