16912 Rhiannon (1998 EP8)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2726846060 ± 4.13e-08
Semi-major axis (a)1.7512387014 AU ± 2.64e-09
Inclination (i)24.52113807° ± 5.04e-06
Long. of Asc. Node (Ω)169.16090010° ± 8.02e-06
Arg. of Perihelion (ω)221.25693507° ± 1.24e-05
Mean Anomaly (M)94.77700479° ± 1.34e-05
Mean Motion (n)0.4252988973°/day ± 9.63e-10
Perihelion dist (q)1.27370287 AU ± 7.23e-08
Aphelion dist (Q)2.22877454 AU ± 7.24e-08
Orbital Period2.31749080 yr ± 5.25e-09
Physical Parameters
H (abs. magnitude)17.89
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.329″
Uncertainty0
Orbit TypeAmor
MOID0.319695 AU
Observations Used298
Oppositions18
Arc Total1992-2024
First Observation Used1992-08-29
Last Observation Used2024-06-29
Observations (303)
Date Type RA Dec Mag Band Observatory
2022-06-25 22:12:54 C 19 51 23.65 +24 22 27.9 X C95
2022-07-18 21:32:06 C 19 28 40.898 +24 21 29.91 X B72
2022-07-18 21:35:09 C 19 28 40.722 +24 21 28.84 X B72
2022-07-18 21:44:19 C 19 28 40.239 +24 21 25.69 X B72
2022-07-18 21:44:20 C 19 28 40.253 +24 21 25.74 X B72
2022-07-18 21:53:30 C 19 28 39.780 +24 21 22.55 X B72
2022-07-18 21:56:33 C 19 28 39.628 +24 21 21.37 X B72
2022-08-28 02:10:25 C 18 56 24.600 +08 24 22.82 V W68
2022-08-28 02:14:57 C 18 56 24.586 +08 24 15.98 V W68
2022-08-28 02:22:46 C 18 56 24.617 +08 24 04.28 V W68
2022-08-28 02:39:01 C 18 56 24.552 +08 23 41.21 V W68
2024-04-11 10:55:15 C 16 18 03.496 +11 43 12.83 V G96
2024-04-11 11:02:45 C 16 18 03.409 +11 43 18.48 V G96
2024-04-11 11:10:16 C 16 18 03.298 +11 43 24.35 V G96
2024-04-11 11:17:48 C 16 18 03.168 +11 43 30.36 V G96
2024-04-18 08:39:44 C 16 14 47.659 +13 47 43.30 V G96
2024-04-18 08:47:07 C 16 14 47.468 +13 47 48.52 V G96
2024-04-18 08:54:31 C 16 14 47.324 +13 47 54.20 V G96
2024-04-18 09:01:55 C 16 14 47.101 +13 47 59.57 V G96
2024-05-06 13:18:49 C 15 59 01.515 +18 38 43.59 X F52
2024-05-06 13:37:36 C 15 59 00.621 +18 38 53.82 X F52
2024-05-06 13:56:21 C 15 58 59.734 +18 39 04.20 X F52
2024-05-06 14:15:10 C 15 58 58.847 +18 39 14.61 X F52
2024-05-07 21:06:00 C 15 57 33.12 +18 56 03.1 V O18
2024-05-07 21:15:08 C 15 57 32.69 +18 56 08.0 V O18
2024-05-07 21:24:14 C 15 57 32.25 +18 56 12.8 V O18
2024-05-09 12:57:22 C 15 55 39.765 +19 16 52.56 X F51
2024-05-09 13:15:43 C 15 55 38.847 +19 17 01.75 X F51
2024-05-09 13:34:03 C 15 55 37.952 +19 17 10.81 X F51
2024-05-09 13:52:24 C 15 55 37.043 +19 17 20.03 X F51
2024-05-15 07:52:57 C 15 48 47.768 +20 19 59.23 V G96
2024-05-15 08:00:20 C 15 48 47.387 +20 20 02.22 V G96
2024-05-15 08:07:43 C 15 48 46.991 +20 20 05.50 V G96
2024-05-15 08:15:06 C 15 48 46.624 +20 20 08.02 V G96
2024-05-27 07:08:36 C 15 34 14.802 +21 39 41.59 X F52
2024-05-27 07:26:24 C 15 34 13.891 +21 39 44.46 X F52
2024-05-27 07:44:14 C 15 34 12.979 +21 39 47.21 X F52
2024-05-27 08:02:06 C 15 34 12.075 +21 39 49.93 X F52
2024-05-30 10:49:53 C 15 30 34.327 +21 48 45.50 X F51
2024-05-30 11:08:31 C 15 30 33.413 +21 48 46.97 X F51
2024-05-30 11:45:51 C 15 30 31.574 +21 48 50.03 X F51
2024-06-02 06:55:38 C 15 27 24.268 +21 52 39.83 V G96
2024-06-02 07:03:01 C 15 27 23.908 +21 52 39.76 V G96
2024-06-02 07:10:23 C 15 27 23.605 +21 52 40.26 V G96
2024-06-02 07:17:45 C 15 27 23.249 +21 52 40.62 V G96
2024-06-16 04:57:11 C 15 14 33.490 +21 17 51.76 V G96
2024-06-16 05:05:17 C 15 14 33.252 +21 17 50.03 V G96
2024-06-16 05:13:22 C 15 14 33.029 +21 17 48.08 V G96
2024-06-16 05:21:28 C 15 14 32.802 +21 17 45.64 V G96
2024-06-29 09:10:40 C 15 07 47.362 +19 37 16.42 X F51