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
1999-01-23 05:55:25 C 04 06 53.38 +14 07 05.4 c 699
1999-01-29 20:08:30 C 04 12 41.28 +16 51 21.9 605
1999-01-29 20:58:29 C 04 12 43.17 +16 52 05.0 605
1999-02-02 05:31:57 C 04 16 18.26 +18 11 46.2 a 699
1999-02-02 06:08:35 C 04 16 19.91 +18 12 21.2 a 699
1999-02-02 06:45:16 C 04 16 21.66 +18 12 55.7 a 699
1999-02-04 03:28:45 C 04 18 32.51 +18 55 53.4 z 704
1999-02-04 03:43:43 C 04 18 33.17 +18 56 08.7 z 704
1999-02-04 03:58:34 C 04 18 33.88 +18 56 22.7 z 704
1999-02-04 04:13:34 C 04 18 34.55 +18 56 36.1 z 704
1999-02-04 04:28:31 C 04 18 35.32 +18 56 50.6 z 704
1999-02-04 10:44:49 C 04 18 54.35 +19 02 48.1 402
1999-02-04 10:46:49 C 04 18 54.44 +19 02 49.8 402
1999-02-04 10:48:49 C 04 18 54.53 +19 02 52.1 402
1999-02-05 10:47:45 04 20 08.56 +19 25 35.1 372
1999-02-05 10:56:00 04 20 08.97 +19 25 43.5 372
1999-02-08 10:32:30 C 04 24 01.04 +20 31 22.0 900
1999-02-08 10:50:48 C 04 24 02.00 +20 31 39.3 900
1999-02-08 12:31:59 C 04 24 07.49 +20 33 09.7 352
1999-02-08 12:36:59 C 04 24 07.80 +20 33 13.7 352
1999-02-08 12:42:00 C 04 24 08.10 +20 33 18.5 352
1999-02-14 11:38:30 C 04 32 46.01 +22 37 14.6 360
1999-02-14 11:42:14 C 04 32 46.27 +22 37 17.8 360
1999-02-19 11:12:29 C 04 40 50.59 +24 13 11.6 402
1999-02-19 11:14:19 C 04 40 50.72 +24 13 13.0 402
1999-02-19 11:16:08 C 04 40 50.86 +24 13 14.5 402
1999-02-25 11:28:22 C 04 51 32.22 +25 59 28.2 402
1999-02-25 11:30:12 C 04 51 32.20 +25 59 28.5 402
1999-02-25 11:32:01 C 04 51 32.52 +25 59 30.1 402
1999-02-25 18:33:40 C 04 52 05.31 +26 04 24.4 046
1999-02-25 18:36:25 C 04 52 05.48 +26 04 26.2 046
1999-02-25 18:39:41 C 04 52 05.71 +26 04 27.9 046
1999-02-25 18:42:52 C 04 52 05.98 +26 04 30.2 046
1999-02-26 19:01:51 C 04 54 00.28 +26 21 17.7 104
1999-02-26 19:05:30 C 04 54 00.59 +26 21 20.3 104
1999-02-26 19:08:44 C 04 54 00.96 +26 21 23.1 104
1999-02-26 19:14:50 C 04 54 01.34 +26 21 26.4 104
1999-02-26 21:02:00 C 04 54 09.67 +26 22 38.5 587
1999-02-26 21:08:54 C 04 54 10.29 +26 22 44.3 587
1999-02-28 12:17:29 C 04 57 17.60 +26 49 06.3 367
1999-02-28 12:30:29 C 04 57 18.61 +26 49 14.2 367
1999-02-28 12:35:29 C 04 57 19.05 +26 49 19.0 367
1999-03-11 02:34:08 C 05 19 04.10 +29 21 22.8 z 704
1999-03-11 02:48:45 C 05 19 05.44 +29 21 31.1 z 704
1999-03-11 03:03:29 C 05 19 06.98 +29 21 37.6 z 704
1999-03-11 03:18:09 C 05 19 08.08 +29 21 44.8 z 704
1999-03-11 03:32:48 C 05 19 09.11 +29 21 53.6 z 704
1999-03-11 18:47:04 C 05 20 32.26 +29 29 57.4 118
1999-03-11 19:12:38 C 05 20 34.50 +29 30 11.0 118
1999-03-11 19:58:24 C 05 20 38.72 +29 30 35.1 046