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
2023-12-10 08:17:24 C 01 08 45.862 +18 45 00.94 V T08
2023-12-11 05:03:42 C 01 07 33.619 +18 44 58.85 V T05
2023-12-11 05:06:18 C 01 07 33.499 +18 44 59.14 V T05
2023-12-11 05:10:52 C 01 07 33.276 +18 44 59.86 V T05
2023-12-11 06:02:36 C 01 07 30.127 +18 44 59.39 V T05
2023-12-12 06:50:32 C 01 06 07.025 +18 45 07.60 V T05
2023-12-12 07:07:12 C 01 06 06.096 +18 45 07.63 V T05
2023-12-12 07:16:17 C 01 06 05.527 +18 45 07.34 V T05
2023-12-12 07:20:51 C 01 06 05.306 +18 45 07.78 V T05
2023-12-14 06:56:23 C 01 03 37.207 +18 45 51.91 V T08
2023-12-14 07:00:22 C 01 03 36.938 +18 45 51.84 V T08
2023-12-14 07:08:06 C 01 03 36.562 +18 45 51.59 V T08
2023-12-14 07:22:47 C 01 03 35.820 +18 45 52.09 V T08
2023-12-15 07:13:17 C 01 02 27.060 +18 46 28.38 V T05
2023-12-15 07:17:51 C 01 02 26.820 +18 46 28.52 V T05
2023-12-15 07:50:57 C 01 02 25.202 +18 46 29.89 V T05
2023-12-15 08:15:37 C 01 02 24.024 +18 46 30.90 V T05
2023-12-16 03:00:09 C 01 01 32.869 +18 47 06.40 V G96
2023-12-16 03:19:39 C 01 01 31.955 +18 47 07.01 V G96
2023-12-16 03:27:16 C 01 01 31.602 +18 47 07.26 V G96
2023-12-16 03:34:55 C 01 01 31.235 +18 47 07.58 V G96
2023-12-17 07:33:36 C 01 00 18.487 +18 48 17.42 V T08
2023-12-17 07:38:16 C 01 00 18.269 +18 48 17.39 V T08
2023-12-17 07:58:16 C 01 00 17.453 +18 48 18.14 V T08
2023-12-17 08:07:35 C 01 00 16.963 +18 48 18.68 V T08
2024-01-01 13:46:34 C 00 51 27.94 +19 28 02.0 V N89
2024-01-01 14:11:12 C 00 51 27.72 +19 28 06.6 V N89
2024-01-01 14:35:51 C 00 51 27.48 +19 28 10.4 V N89
2024-01-05 07:36:52 C 00 51 05.486 +19 45 11.70 V T05
2024-01-05 07:41:26 C 00 51 05.446 +19 45 12.60 V T05
2024-01-05 07:49:16 C 00 51 05.479 +19 45 14.83 V T05
2024-01-05 08:18:21 C 00 51 05.436 +19 45 20.52 V T05
2024-01-07 06:00:48 C 00 51 09.139 +19 55 13.12 V T08
2024-01-07 06:06:08 C 00 51 09.070 +19 55 14.38 V T08
2024-01-07 06:10:49 C 00 51 09.127 +19 55 15.38 V T08
2024-01-07 06:14:48 C 00 51 09.103 +19 55 16.18 V T08
2024-01-07 06:16:08 C 00 51 09.094 +19 55 16.14 V T08
2024-01-07 06:24:08 C 00 51 09.046 +19 55 18.91 V T08
2024-01-07 06:29:27 C 00 51 09.134 +19 55 19.13 V T08
2024-01-07 06:38:17 C 00 51 09.137 +19 55 21.22 V T08
2024-01-10 01:41:57 C 00 51 31.684 +20 11 10.54 V G96
2024-01-10 01:50:19 C 00 51 31.727 +20 11 12.66 V G96
2024-01-10 01:58:42 C 00 51 31.777 +20 11 14.71 V G96
2024-01-10 02:07:04 C 00 51 31.838 +20 11 16.69 V G96
2024-01-11 06:53:46 C 00 51 47.237 +20 18 36.36 V T08
2024-01-11 06:58:32 C 00 51 47.311 +20 18 36.83 V T08
2024-01-11 07:08:52 C 00 51 47.347 +20 18 39.31 V T08
2024-01-11 07:35:16 C 00 51 47.645 +20 18 46.19 V T08
2024-01-14 05:59:09 C 00 52 40.966 +20 37 54.41 V T08
2024-01-14 06:03:48 C 00 52 41.033 +20 37 55.92 V T08