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
2024-08-20 13:17:18 C 03 18 37.270 -06 55 30.72 V T08
2024-08-20 13:33:10 C 03 18 38.774 -06 55 16.21 V T08
2024-08-22 12:31:02 C 03 23 00.780 -06 10 40.40 V T08
2024-08-22 12:38:05 C 03 23 01.474 -06 10 32.63 V T08
2024-08-22 12:53:17 C 03 23 02.856 -06 10 19.06 V T08
2024-08-22 13:00:50 C 03 23 03.528 -06 10 10.92 V T08
2024-08-26 08:25:38 C 03 31 34.802 -04 37 50.27 V W68
2024-08-26 08:28:14 C 03 31 35.057 -04 37 47.86 V W68
2024-08-26 08:32:46 C 03 31 35.458 -04 37 42.64 V W68
2024-08-26 09:07:54 C 03 31 38.626 -04 37 05.70 V W68
2024-08-31 01:02:08 C 03 42 08.599 -02 33 22.03 V M22
2024-08-31 01:04:44 C 03 42 08.839 -02 33 18.65 V M22
2024-08-31 01:31:58 C 03 42 11.340 -02 32 47.51 V M22
2024-08-31 01:48:22 C 03 42 12.823 -02 32 28.32 V M22
2024-09-01 14:14:43 C 03 45 38.783 -01 49 28.48 X F52
2024-09-01 14:30:07 C 03 45 40.186 -01 49 09.95 X F52
2024-09-01 14:45:25 C 03 45 41.579 -01 48 51.50 X F52
2024-09-01 15:00:43 C 03 45 42.971 -01 48 33.04 X F52
2024-09-02 07:30:35 C 03 47 16.759 -01 28 18.05 V W68
2024-09-02 07:58:20 C 03 47 19.301 -01 27 44.24 V W68
2024-09-02 08:02:13 C 03 47 19.651 -01 27 39.49 V W68
2024-09-02 08:06:46 C 03 47 20.074 -01 27 34.02 V W68
2024-09-02 08:44:10 C 03 47 23.65 -01 27 02.4 V H21
2024-09-02 08:46:34 C 03 47 23.88 -01 26 59.5 V H21
2024-09-02 08:49:32 C 03 47 24.15 -01 26 55.8 V H21
2024-09-02 08:52:05 C 03 47 24.38 -01 26 52.8 V H21
2024-09-02 08:54:38 C 03 47 24.62 -01 26 49.5 V H21
2024-09-02 08:57:27 C 03 47 24.88 -01 26 46.1 V H21
2024-09-03 13:34:14 C 03 50 07.373 -00 51 05.87 V T05
2024-09-03 13:36:50 C 03 50 07.591 -00 51 02.52 V T05
2024-09-03 13:44:46 C 03 50 08.326 -00 50 52.44 V T05
2024-09-03 13:54:01 C 03 50 09.182 -00 50 40.78 V T05
2024-09-06 07:59:17 C 03 56 25.985 +00 35 42.25 V W68
2024-09-06 08:06:06 C 03 56 26.630 +00 35 51.68 V W68
2024-09-06 08:35:43 C 03 56 29.354 +00 36 31.64 V W68
2024-09-06 08:46:11 C 03 56 30.322 +00 36 45.79 V W68
2024-09-07 11:38:10 C 03 59 04.802 +01 13 18.26 V T05
2024-09-07 11:42:43 C 03 59 05.249 +01 13 24.42 V T05
2024-09-07 11:50:33 C 03 59 05.964 +01 13 35.44 V T05
2024-09-07 11:54:28 C 03 59 06.326 +01 13 40.66 V T05
2024-09-07 11:55:07 C 03 59 06.398 +01 13 42.60 V T05
2024-09-07 11:57:43 C 03 59 06.638 +01 13 46.49 V T05
2024-09-07 11:58:22 C 03 59 06.696 +01 13 46.02 V T05
2024-09-07 11:59:01 C 03 59 06.737 +01 13 46.81 V T05
2024-09-07 12:03:35 C 03 59 07.171 +01 13 53.36 V T05
2024-09-07 12:06:50 C 03 59 07.481 +01 13 57.68 V T05
2024-09-07 12:36:59 C 03 59 10.267 +01 14 39.66 V T05
2024-09-07 12:44:08 C 03 59 10.930 +01 14 49.16 V T05
2024-09-07 12:48:42 C 03 59 11.338 +01 14 55.93 V T05
2024-09-08 01:10:48 C 04 00 22.315 +01 32 23.35 V M22