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
2025-11-03 03:42:16 C 09 00 18.257 +46 10 54.62 V R17
2025-11-03 04:02:37 C 09 00 23.748 +46 11 09.74 V R17
2025-11-03 04:23:01 C 09 00 29.292 +46 11 24.94 V R17
2025-11-03 04:43:22 C 09 00 34.776 +46 11 39.41 V R17
2025-11-03 09:19:14 C 09 01 50.653 +46 14 51.04 V 703
2025-11-03 09:22:10 C 09 01 51.470 +46 14 52.69 V 703
2025-11-03 09:25:05 C 09 01 52.180 +46 14 55.25 V 703
2025-11-03 09:28:00 C 09 01 53.054 +46 14 57.26 V 703
2025-11-06 03:39:11 C 09 20 52.730 +46 58 24.92 V R17
2025-11-06 03:59:34 C 09 20 58.810 +46 58 38.03 V R17
2025-11-06 04:19:56 C 09 21 04.814 +46 58 50.59 V R17
2025-11-06 04:40:18 C 09 21 10.848 +46 59 03.41 V R17
2025-11-07 20:44:18 C 09 33 29.467 +47 21 39.48 W O18
2025-11-07 22:11:48 C 09 33 56.761 +47 22 26.88 W O18
2025-11-08 10:07:45 C 09 37 44.584 +47 28 30.25 V 703
2025-11-08 10:11:04 C 09 37 45.664 +47 28 30.97 V 703
2025-11-08 10:14:23 C 09 37 46.636 +47 28 34.07 V 703
2025-11-08 10:17:42 C 09 37 47.770 +47 28 35.51 V 703
2025-11-08 12:55:54 C 09 38 38.614 +47 29 54.85 V T08
2025-11-08 13:05:48 C 09 38 41.837 +47 29 59.64 V T08
2025-11-08 13:21:41 C 09 38 46.850 +47 30 08.57 V T08
2025-11-08 13:26:30 C 09 38 48.350 +47 30 10.76 V T08
2025-11-08 14:04:58 C 09 39 00.619 +47 30 30.14 X F51
2025-11-08 14:22:46 C 09 39 06.262 +47 30 39.23 X F51
2025-11-08 14:40:37 C 09 39 11.930 +47 30 48.27 X F51
2025-11-08 14:58:35 C 09 39 17.615 +47 30 57.29 X F51
2025-11-09 04:07:24 C 09 43 33.816 +47 37 03.68 V R17
2025-11-09 04:22:07 C 09 43 38.597 +47 37 10.70 V R17
2025-11-09 04:39:19 C 09 43 44.150 +47 37 18.91 V R17
2025-11-09 04:58:57 C 09 43 50.498 +47 37 28.27 V R17
2025-11-09 10:28:13 C 09 45 38.693 +47 39 51.77 V 703
2025-11-09 10:31:26 C 09 45 39.719 +47 39 53.71 V 703
2025-11-09 10:34:40 C 09 45 40.799 +47 39 55.58 V 703
2025-11-09 10:37:53 C 09 45 41.929 +47 39 56.56 V 703
2025-11-10 14:13:47 C 09 54 55.954 +47 51 02.95 V T08
2025-11-10 14:17:46 C 09 54 57.312 +47 51 03.96 V T08
2025-11-10 14:26:22 C 09 55 00.190 +47 51 07.63 V T08
2025-11-10 14:58:09 C 09 55 10.848 +47 51 19.62 V T08
2025-11-11 10:43:02 C 10 01 58.397 +47 57 49.28 V 703
2025-11-11 10:46:26 C 10 01 59.610 +47 57 49.21 V 703
2025-11-11 10:49:50 C 10 02 00.704 +47 57 51.34 V 703
2025-11-11 10:53:15 C 10 02 01.874 +47 57 52.31 V 703
2025-11-11 13:28:48 C 10 02 56.323 +47 58 39.18 V T08
2025-11-11 13:38:09 C 10 02 59.575 +47 58 42.42 V T08
2025-11-11 13:58:41 C 10 03 06.677 +47 58 49.12 V T08
2025-11-14 11:26:25 C 10 28 11.622 +48 10 52.46 V 703
2025-11-14 11:29:46 C 10 28 12.871 +48 10 52.32 V 703
2025-11-14 11:33:06 C 10 28 14.084 +48 10 52.54 V 703
2025-11-14 11:36:26 C 10 28 15.326 +48 10 52.86 V 703
2025-11-15 03:41:23 C 10 34 18.216 +48 11 03.95 V R17