16657 (1993 UB)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4606673306 ± 1.22e-08
Semi-major axis (a)2.2767138296 AU ± 6.53e-10
Inclination (i)24.94466450° ± 2.41e-06
Long. of Asc. Node (Ω)31.18959077° ± 3.19e-06
Arg. of Perihelion (ω)21.29852548° ± 5.39e-06
Mean Anomaly (M)111.10642678° ± 1.84e-06
Mean Motion (n)0.2869125912°/day ± 1.23e-10
Perihelion dist (q)1.22790615 AU ± 2.77e-08
Aphelion dist (Q)3.32552151 AU ± 2.77e-08
Orbital Period3.43528417 yr ± 1.48e-09
Physical Parameters
H (abs. magnitude)16.55
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.251″
Uncertainty0
Orbit TypeAmor
MOID0.252107 AU
Observations Used912
Oppositions23
Arc Total1993-2025
First Observation Used1993-10-23
Last Observation Used2025-05-26
Observations (1002)
Date Type RA Dec Mag Band Observatory
2024-11-18 11:02:28 C 08 02 23.161 +69 51 00.07 V 703
2024-11-21 12:47:33 C 08 20 19.327 +71 46 57.86 V T05
2024-11-21 12:51:30 C 08 20 20.165 +71 47 03.62 V T05
2024-11-21 12:52:09 C 08 20 20.426 +71 47 04.70 V T05
2024-11-21 12:54:48 C 08 20 21.190 +71 47 08.95 V T05
2024-11-21 12:55:27 C 08 20 21.194 +71 47 09.74 V T05
2024-11-21 12:58:46 C 08 20 21.883 +71 47 14.82 V T05
2024-11-21 13:29:00 C 08 20 28.882 +71 48 00.18 V T05
2024-11-21 13:29:39 C 08 20 29.162 +71 48 01.33 V T05
2024-11-23 13:22:19 C 08 32 24.221 +72 55 28.49 V T08
2024-11-23 13:25:39 C 08 32 24.979 +72 55 32.88 V T08
2024-11-23 13:37:05 C 08 32 27.665 +72 55 48.76 V T08
2024-11-23 13:44:24 C 08 32 29.369 +72 55 58.87 V T08
2024-11-29 13:39:32 C 09 08 44.006 +75 44 59.71 V T05
2024-11-29 13:42:09 C 09 08 44.657 +75 45 02.59 V T05
2024-11-29 14:13:48 C 09 08 52.020 +75 45 35.10 V T05
2024-11-29 14:18:42 C 09 08 53.088 +75 45 40.00 V T05
2024-11-29 14:22:52 C 09 08 54.046 +75 45 44.57 V T05
2024-11-29 14:26:10 C 09 08 54.780 +75 45 47.92 V T05
2024-11-29 14:49:34 C 09 09 00.173 +75 46 11.35 V T05
2024-11-29 22:43:52 C 09 11 01.152 +75 53 49.99 Z C23
2024-11-29 22:53:29 C 09 11 03.499 +75 53 59.64 Z C23
2024-12-05 14:05:53 C 09 43 17.143 +77 51 15.80 V T08
2024-12-05 14:09:52 C 09 43 17.921 +77 51 18.90 V T08
2024-12-05 14:17:10 C 09 43 19.423 +77 51 24.91 V T08
2024-12-05 14:32:58 C 09 43 22.726 +77 51 36.65 V T08
2024-12-07 12:12:44 C 09 53 22.915 +78 24 03.78 V T05
2024-12-07 12:16:46 C 09 53 23.724 +78 24 06.73 V T05
2024-12-07 12:22:04 C 09 53 24.725 +78 24 10.22 V T05
2024-12-07 12:35:56 C 09 53 27.257 +78 24 20.38 V T05
2024-12-07 13:24:29 C 09 53 36.674 +78 24 55.26 V T05
2024-12-07 13:27:47 C 09 53 37.332 +78 24 56.88 V T05
2024-12-07 13:36:20 C 09 53 39.019 +78 25 03.54 V T05
2024-12-07 13:54:09 C 09 53 42.151 +78 25 16.07 V T05
2024-12-19 13:44:49 C 10 36 02.616 +80 53 41.53 V T05
2024-12-19 13:48:11 C 10 36 02.616 +80 53 42.94 V T05
2024-12-19 13:52:45 C 10 36 02.777 +80 53 44.81 V T05
2024-12-21 13:07:44 C 10 38 31.147 +81 11 16.12 V T08
2024-12-21 13:27:41 C 10 38 31.438 +81 11 23.57 V T08
2024-12-21 13:31:41 C 10 38 31.426 +81 11 25.30 V T08
2024-12-21 13:40:21 C 10 38 31.409 +81 11 28.46 V T08
2024-12-23 13:53:20 C 10 39 24.223 +81 27 41.62 V T05
2024-12-23 13:57:17 C 10 39 24.053 +81 27 42.84 V T05
2024-12-23 14:28:14 C 10 39 23.503 +81 27 53.10 V T05
2024-12-23 14:35:33 C 10 39 23.122 +81 27 55.40 V T05
2024-12-27 13:05:40 C 10 36 08.491 +81 54 30.56 V T05
2024-12-27 13:08:17 C 10 36 08.107 +81 54 31.28 V T05
2024-12-27 13:12:15 C 10 36 07.800 +81 54 32.36 V T05
2024-12-27 13:30:49 C 10 36 05.995 +81 54 37.12 V T05
2024-12-29 12:17:33 C 10 31 59.388 +82 04 54.44 V T08