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
2021-01-12 09:04:21 C 08 55 08.08 -22 39 39.9 U I41
2021-01-12 09:58:59 C 08 55 05.49 -22 39 09.4 U I41
2021-01-13 10:56:37 C 08 53 58.91 -22 24 52.8 V T08
2021-01-13 11:01:56 C 08 53 58.64 -22 24 49.6 V T08
2021-01-13 11:04:35 C 08 53 58.49 -22 24 48.9 V T08
2021-01-13 11:07:54 C 08 53 58.33 -22 24 45.6 V T08
2021-01-13 11:44:17 C 08 53 56.58 -22 24 25.2 V T08
2021-01-16 08:31:54 C 08 50 44.51 -21 40 39.7 U I41
2021-01-16 10:14:30 C 08 50 39.30 -21 39 29.0 U I41
2021-01-17 10:36:57 C 08 49 29.37 -21 22 19.6 V T08
2021-01-17 11:01:23 C 08 49 28.02 -21 22 01.3 V T08
2021-01-17 11:04:03 C 08 49 27.99 -21 22 00.4 V T08
2021-01-17 11:08:02 C 08 49 27.73 -21 21 55.9 V T08
2021-01-18 08:02:02 C 08 48 26.72 -21 06 38.2 U I41
2021-01-18 08:33:12 C 08 48 25.11 -21 06 15.0 U I41
2021-02-06 07:00:29 C 08 26 22.88 -13 25 51.3 U I41
2021-02-06 07:35:23 C 08 26 21.30 -13 25 08.9 U I41
2021-02-06 07:36:44 C 08 26 21.24 -13 25 07.2 U I41
2021-02-06 09:25:00 C 08 26 16.34 -13 22 55.1 U I41
2021-02-07 10:02:28 C 08 25 14.40 -12 52 42.3 V T08
2021-02-07 10:07:07 C 08 25 14.16 -12 52 36.3 V T08
2021-02-07 10:17:05 C 08 25 13.74 -12 52 23.2 V T08
2021-02-07 10:31:42 C 08 25 13.15 -12 52 05.6 V T08
2021-02-09 05:19:36 C 08 23 29.75 -11 58 56.6 V G96
2021-02-09 05:29:08 C 08 23 29.34 -11 58 44.9 V G96
2021-02-09 05:38:44 C 08 23 28.94 -11 58 33.0 V G96
2021-02-09 05:48:15 C 08 23 28.54 -11 58 21.0 V G96
2021-02-11 06:29:34 C 08 21 37.80 -10 56 58.6 V 703
2021-02-11 06:36:30 C 08 21 37.48 -10 56 48.4 V 703
2021-02-11 06:43:26 C 08 21 37.22 -10 56 40.4 V 703
2021-02-12 05:33:29 C 08 20 48.33 -10 27 39.2 V 703
2021-02-12 05:41:42 C 08 20 48.06 -10 27 28.0 V 703
2021-02-12 05:49:56 C 08 20 47.77 -10 27 17.9 V 703
2021-02-16 09:39:05 C 08 17 36.64 -08 19 30.1 V T05
2021-02-16 09:44:04 C 08 17 36.48 -08 19 24.0 V T05
2021-02-16 09:52:27 C 08 17 36.19 -08 19 13.0 V T05
2021-02-16 10:07:48 C 08 17 35.70 -08 18 53.2 V T05
2021-02-17 08:19:07 C 08 16 58.993 -07 50 28.00 U F51
2021-02-17 08:36:41 C 08 16 58.468 -07 50 05.51 U F51
2021-02-17 08:54:13 C 08 16 57.944 -07 49 43.09 U F51
2021-02-17 09:11:47 C 08 16 57.421 -07 49 20.58 U F51
2021-02-20 04:55:52 C 08 15 17.65 -06 22 59.8 U I41
2021-02-20 06:02:50 C 08 15 16.00 -06 21 34.8 U I41
2021-02-20 06:34:06 C 08 15 15.24 -06 20 55.3 U I41
2021-02-20 07:35:18 C 08 15 13.75 -06 19 37.3 U I41
2021-03-20 04:03:17 C 08 16 11.77 +05 44 28.6 V G96
2021-03-20 04:10:44 C 08 16 11.94 +05 44 35.1 V G96
2021-03-20 04:18:11 C 08 16 12.09 +05 44 41.4 V G96
2021-03-20 04:25:38 C 08 16 12.23 +05 44 47.4 V G96
2022-06-25 22:04:12 C 19 51 23.93 +24 22 26.1 X C95