16816 (1997 UF9)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6037214479 ± 1.59e-08
Semi-major axis (a)1.4425362245 AU ± 1.02e-09
Inclination (i)25.91743206° ± 1.77e-06
Long. of Asc. Node (Ω)37.14160767° ± 1.14e-06
Arg. of Perihelion (ω)157.99634538° ± 1.37e-06
Mean Anomaly (M)323.06228385° ± 2.42e-06
Mean Motion (n)0.5688819894°/day ± 6.04e-10
Perihelion dist (q)0.57164617 AU ± 2.29e-08
Aphelion dist (Q)2.31342628 AU ± 2.30e-08
Orbital Period1.73256721 yr ± 1.84e-09
Physical Parameters
H (abs. magnitude)16.24
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.078″
Uncertainty0
Orbit TypeApollo
MOID0.379852 AU
Observations Used1692
Gaia Obs Used91
Oppositions8
Arc Total1997-2025
First Observation Used1997-10-29
Last Observation Used2025-12-20
Observations (1777)
Date Type RA Dec Mag Band Observatory
2024-01-14 06:18:16 C 00 52 41.225 +20 37 59.70 V T08
2024-01-14 06:35:19 C 00 52 41.398 +20 38 04.96 V T08
2024-01-15 06:01:23 C 00 53 03.730 +20 44 50.35 V T08
2024-01-15 06:06:52 C 00 53 03.763 +20 44 51.94 V T08
2024-01-15 06:14:22 C 00 53 03.907 +20 44 54.17 V T08
2024-01-15 06:28:35 C 00 53 04.102 +20 44 57.80 V T08
2024-01-16 06:09:17 C 00 53 28.903 +20 52 00.70 V T05
2024-01-16 06:13:53 C 00 53 28.970 +20 52 01.16 V T05
2024-01-16 06:23:00 C 00 53 29.136 +20 52 03.40 V T05
2024-01-16 06:47:01 C 00 53 29.510 +20 52 10.99 V T05
2024-01-23 06:05:21 C 00 57 24.610 +21 47 17.95 V T08
2024-01-23 06:09:20 C 00 57 24.751 +21 47 20.00 V T08
2024-01-23 06:16:51 C 00 57 24.989 +21 47 21.84 V T08
2024-01-23 06:34:01 C 00 57 25.421 +21 47 27.74 V T08
2024-01-24 07:00:46 C 00 58 08.207 +21 56 16.59 X F52
2024-01-24 07:14:45 C 00 58 08.612 +21 56 21.48 X F52
2024-01-24 07:28:43 C 00 58 09.006 +21 56 26.47 X F52
2024-01-24 07:42:40 C 00 58 09.408 +21 56 31.41 X F52
2024-01-30 07:03:10 C 01 03 01.123 +22 52 02.93 V T08
2024-01-30 07:09:28 C 01 03 01.320 +22 52 05.88 V T08
2024-01-30 07:17:01 C 01 03 01.591 +22 52 08.83 V T08
2024-01-30 07:32:28 C 01 03 02.155 +22 52 13.87 V T08
2024-02-04 05:42:01 C 01 07 52.814 +23 42 41.22 V T08
2024-02-04 05:46:56 C 01 07 53.004 +23 42 43.96 V T08
2024-02-04 05:54:55 C 01 07 53.414 +23 42 46.69 V T08
2024-02-04 06:11:34 C 01 07 54.082 +23 42 53.46 V T08
2024-02-09 05:40:57 C 01 13 32.143 +24 37 59.99 V T05
2024-02-09 05:45:34 C 01 13 32.218 +24 37 59.41 V T05
2024-02-09 05:54:04 C 01 13 32.830 +24 38 05.78 V T05
2024-02-09 06:08:24 C 01 13 33.523 +24 38 12.95 V T05
2024-02-26 05:22:06 C 01 38 07.234 +28 13 24.31 V T05
2024-02-26 05:26:40 C 01 38 07.534 +28 13 27.80 V T05
2024-02-26 05:37:44 C 01 38 08.244 +28 13 33.74 V T05
2024-02-26 05:45:14 C 01 38 08.840 +28 13 37.81 X F52
2024-02-26 05:54:11 C 01 38 09.444 +28 13 42.60 V T05
2024-02-26 05:57:39 C 01 38 09.704 +28 13 44.79 X F52
2024-02-26 06:10:09 C 01 38 10.564 +28 13 51.92 X F52
2024-02-26 06:22:34 C 01 38 11.437 +28 13 58.78 X F52
2024-02-28 05:20:02 C 01 41 33.377 +28 41 07.26 V T08
2024-02-28 05:24:42 C 01 41 33.766 +28 41 09.60 V T08
2024-02-28 05:32:03 C 01 41 34.255 +28 41 13.88 V T08
2024-02-28 05:47:50 C 01 41 35.422 +28 41 20.51 V T08
2024-03-12 02:29:00 C 02 06 39.478 +31 47 22.49 V 703
2024-03-12 02:32:14 C 02 06 39.769 +31 47 23.64 V 703
2024-03-12 02:35:28 C 02 06 40.115 +31 47 24.83 V 703
2024-03-12 02:38:42 C 02 06 40.410 +31 47 28.03 V 703
2024-06-17 08:28:07 C 03 15 29.146 -32 28 07.25 V W68
2024-06-17 08:32:50 C 03 15 28.982 -32 28 14.41 V W68
2024-06-17 08:40:52 C 03 15 28.738 -32 28 27.05 V W68
2024-06-17 09:15:25 C 03 15 27.638 -32 29 21.77 V W68