161999 (1989 RC)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5125695443 ± 5.62e-08
Semi-major axis (a)2.3176256527 AU ± 6.85e-09
Inclination (i)7.37873890° ± 4.48e-06
Long. of Asc. Node (Ω)140.08449359° ± 4.64e-05
Arg. of Perihelion (ω)181.50747081° ± 4.83e-05
Mean Anomaly (M)109.10555186° ± 2.20e-05
Mean Motion (n)0.2793491423°/day ± 1.24e-09
Perihelion dist (q)1.12968133 AU ± 1.30e-07
Aphelion dist (Q)3.50556998 AU ± 1.31e-07
Orbital Period3.52829536 yr ± 1.56e-08
Physical Parameters
H (abs. magnitude)18.80
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.372″
Uncertainty0
Orbit TypeAmor
MOID0.114804 AU
Observations Used139
Oppositions25
Arc Total1989-2024
First Observation Used1989-08-09
Last Observation Used2024-06-05
Observations (156)
Date Type RA Dec Mag Band Observatory
2010-07-22 19:24:16 S 14 20 57.53 -03 01 48.5 L C51
2010-07-22 22:34:47 S 14 21 07.79 -03 03 50.7 L C51
2010-07-23 03:20:28 S 14 21 23.28 -03 06 53.8 L C51
2010-07-23 03:20:38 S 14 21 23.30 -03 06 55.5 L C51
2010-07-23 06:30:59 S 14 21 33.720 -03 08 55.82 L C51
2010-07-23 16:02:32 S 14 22 05.10 -03 15 04.5 L C51
2010-07-23 19:13:03 S 14 22 15.69 -03 17 07.6 L C51
2017-04-26 10:33:06 C 14 23 51.931 +00 42 51.51 L F51
2017-04-26 10:51:07 C 14 23 50.986 +00 42 59.22 L F51
2017-04-26 11:09:04 C 14 23 50.044 +00 43 07.04 L F51
2017-04-26 11:26:57 C 14 23 49.100 +00 43 14.64 L F51
2017-05-28 04:03:06 C 13 46 21.96 +04 19 22.8 t V03
2017-05-28 04:24:41 C 13 46 21.14 +04 19 24.5 t V03
2018-01-06 05:16:50 C 23 57 42.728 -08 00 59.19 U F51
2018-01-06 05:24:14 C 23 57 43.639 -08 00 52.81 U F51
2018-01-06 05:31:38 C 23 57 44.584 -08 00 46.56 U F51
2018-01-06 05:39:04 C 23 57 45.498 -08 00 40.40 U F51
2024-04-07 16:31:46 C 14 06 56.594 -00 10 24.35 O18
2024-04-07 19:08:17 C 14 06 50.081 -00 09 17.49 O18
2024-04-15 16:02:23 C 13 58 32.966 +01 12 13.91 O18
2024-04-15 20:08:04 C 13 58 20.915 +01 13 59.67 O18
2024-04-17 13:04:43 C 13 56 23.034 +01 31 33.91 X F51
2024-04-17 13:20:37 C 13 56 22.234 +01 31 40.81 X F51
2024-04-17 13:36:27 C 13 56 21.451 +01 31 47.50 X F51
2024-04-17 13:52:23 C 13 56 20.654 +01 31 54.49 X F51
2024-04-29 15:44:02 C 13 41 36.599 +03 27 26.80 O18
2024-04-29 18:11:02 C 13 41 28.755 +03 28 19.76 O18
2024-05-01 08:49:55 C 13 39 29.538 +03 41 56.00 X F51
2024-05-01 09:22:45 C 13 39 27.787 +03 42 07.35 X F51
2024-05-01 09:48:16 C 13 39 26.413 +03 42 15.95 X F51
2024-05-03 07:59:55 C 13 37 05.164 +03 57 42.38 X F51
2024-05-03 08:36:06 C 13 37 03.258 +03 57 54.18 X F51
2024-05-03 08:54:16 C 13 37 02.299 +03 58 00.07 X F51
2024-05-03 15:26:54 C 13 36 42.467 +04 00 04.60 O18
2024-05-03 17:50:53 C 13 36 34.946 +04 00 51.06 O18
2024-05-03 19:19:59 C 13 36 30.303 +04 01 19.48 O18
2024-05-05 17:38:43 C 13 34 11.279 +04 15 40.20 O18
2024-05-05 19:07:31 C 13 34 06.737 +04 16 06.50 O18
2024-05-06 19:09:21 C 13 32 55.677 +04 23 08.88 O18
2024-05-06 19:11:21 C 13 32 55.581 +04 23 09.62 O18
2024-05-07 17:40:34 C 13 31 50.031 +04 29 29.75 O18
2024-05-07 19:09:37 C 13 31 45.596 +04 29 54.06 O18
2024-05-07 19:11:37 C 13 31 45.501 +04 29 54.95 O18
2024-05-08 07:46:52 C 13 31 09.571 +04 33 23.12 X F51
2024-05-08 08:02:56 C 13 31 08.748 +04 33 27.40 X F51
2024-05-08 08:19:00 C 13 31 07.944 +04 33 31.53 X F51
2024-05-11 15:43:02 C 13 27 25.783 +04 53 14.75 O18
2024-05-11 17:23:10 C 13 27 21.069 +04 53 37.42 O18
2024-05-27 07:14:25 C 13 13 51.540 +05 39 34.45 X F51
2024-05-27 07:32:52 C 13 13 51.010 +05 39 34.53 X F51