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
2024-09-20 09:26:36 C 04 29 27.211 +09 37 50.95 V 703
2024-09-24 13:16:43 C 04 39 41.268 +12 57 10.98 V T05
2024-09-24 13:27:16 C 04 39 42.302 +12 57 32.72 V T05
2024-09-24 13:35:04 C 04 39 43.114 +12 57 48.78 V T05
2024-09-25 14:37:54 C 04 42 19.582 +13 50 55.97 V T05
2024-09-25 14:42:27 C 04 42 20.050 +13 51 05.69 V T05
2024-09-25 15:11:18 C 04 42 22.922 +13 52 08.04 V T05
2024-09-25 15:17:21 C 04 42 23.532 +13 52 20.53 V T05
2024-09-27 13:10:42 C 04 47 14.539 +15 33 02.56 V T05
2024-09-27 13:13:19 C 04 47 14.806 +15 33 08.35 V T05
2024-09-27 13:17:52 C 04 47 15.266 +15 33 18.61 V T05
2024-09-27 13:25:42 C 04 47 16.056 +15 33 36.04 V T05
2024-09-28 12:41:46 C 04 49 45.137 +16 26 19.21 V T05
2024-09-28 12:56:48 C 04 49 46.678 +16 26 53.70 V T05
2024-09-28 12:59:50 C 04 49 47.004 +16 27 00.86 V T05
2024-09-28 13:02:26 C 04 49 47.251 +16 27 06.95 V T05
2024-09-29 10:45:13 C 04 52 06.967 +17 17 17.20 V 703
2024-09-29 10:55:14 C 04 52 07.907 +17 17 38.62 V 703
2024-09-29 13:00:47 C 04 52 21.890 +17 22 37.09 V T05
2024-09-29 13:05:20 C 04 52 22.354 +17 22 48.00 V T05
2024-09-29 13:09:58 C 04 52 22.826 +17 22 58.62 V T05
2024-09-29 13:23:06 C 04 52 24.199 +17 23 29.40 V T05
2024-10-01 12:57:43 C 04 57 35.064 +19 17 11.18 V T08
2024-10-01 12:58:23 C 04 57 35.131 +19 17 13.13 V T08
2024-10-01 13:01:04 C 04 57 35.410 +19 17 19.61 V T08
2024-10-01 13:01:44 C 04 57 35.489 +19 17 21.26 V T08
2024-10-01 13:05:44 C 04 57 35.911 +19 17 30.98 V T08
2024-10-01 13:13:32 C 04 57 36.725 +19 17 50.14 V T08
2024-10-01 13:14:52 C 04 57 36.869 +19 17 53.41 V T08
2024-10-02 14:42:24 C 05 00 24.970 +20 20 38.47 V T05
2024-10-02 14:46:57 C 05 00 25.440 +20 20 49.81 V T05
2024-10-02 14:55:09 C 05 00 26.306 +20 21 10.33 V T05
2024-10-02 15:23:44 C 05 00 29.323 +20 22 21.36 V T05
2024-10-03 10:07:58 C 05 02 35.171 +21 09 19.91 V G96
2024-10-03 10:15:25 C 05 02 35.966 +21 09 38.81 V G96
2024-10-03 10:22:51 C 05 02 36.766 +21 09 57.67 V G96
2024-10-03 10:32:17 C 05 02 37.770 +21 10 21.54 V G96
2024-10-03 12:52:52 C 05 02 53.729 +21 16 21.04 V T05
2024-10-03 13:00:17 C 05 02 54.530 +21 16 39.79 V T05
2024-10-03 13:04:52 C 05 02 55.013 +21 16 51.64 V T05
2024-10-03 13:13:42 C 05 02 55.954 +21 17 14.21 V T05
2024-10-05 12:38:25 C 05 08 17.556 +23 19 38.50 V T08
2024-10-05 12:54:05 C 05 08 19.270 +23 20 20.65 V T08
2024-10-05 12:56:45 C 05 08 19.558 +23 20 27.64 V T08
2024-10-05 13:00:48 C 05 08 19.990 +23 20 37.86 V T08
2024-10-06 12:57:24 C 05 11 04.889 +24 24 06.08 V T05
2024-10-06 13:00:40 C 05 11 05.261 +24 24 14.90 V T05
2024-10-06 13:04:43 C 05 11 05.695 +24 24 25.67 V T05
2024-10-06 13:14:29 C 05 11 06.766 +24 24 51.88 V T05
2024-10-07 12:52:58 C 05 13 51.451 +25 28 34.61 V T05