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
1996-06-21 11:33:31 C 15 48 36.95 +01 36 17.5 413
1996-06-22 05:40:18 C 15 47 56.52 +01 33 47.9 i 711
1996-06-22 05:49:16 C 15 47 56.15 +01 33 46.8 i 711
1996-06-25 00:01:51 C 15 45 40.24 +01 22 51.7 z 118
1996-06-25 00:23:45 C 15 45 39.55 +01 22 47.6 z 118
1996-06-25 06:00:31 C 15 45 29.59 +01 21 39.1 z 658
1996-06-25 06:04:45 C 15 45 29.44 +01 21 37.7 z 658
1996-06-25 06:08:43 C 15 45 29.30 +01 21 37.6 z 658
1996-06-26 03:45:19 C 15 44 49.93 +01 17 00.9 i 711
1996-06-26 03:54:23 C 15 44 49.63 +01 16 59.0 i 711
1996-07-18 11:23:40 C 15 42 17.47 -03 20 04.5 413
1996-07-18 11:27:14 C 15 42 17.53 -03 20 07.5 413
1996-07-20 04:43:44 C 15 43 25.20 -03 54 27.5 i 711
1996-07-20 04:53:55 C 15 43 25.44 -03 54 36.1 i 711
1996-07-20 21:41:16 C 15 43 56.71 -04 08 59.4 z 118
1996-07-20 21:52:08 C 15 43 57.06 -04 09 08.3 z 118
1996-07-21 06:40:35 C 15 44 14.97 -04 16 36.6 c 566
1996-07-21 06:55:01 C 15 44 15.40 -04 16 49.2 c 566
1996-07-21 07:13:42 C 15 44 15.86 -04 17 05.5 c 566
1996-07-24 03:48:36 C 15 46 51.69 -05 19 06.3 z 696
1996-07-24 03:51:20 C 15 46 51.82 -05 19 08.6 z 696
1996-07-24 03:54:07 C 15 46 51.88 -05 19 11.2 z 696
1996-07-24 03:56:50 C 15 46 51.99 -05 19 13.4 z 696
1996-08-21 03:46:02 C 16 49 10.12 -19 04 35.4 i 711
1996-08-21 03:53:57 C 16 49 11.26 -19 04 46.4 i 711
1996-08-22 02:51:32 C 16 52 43.80 -19 38 02.0 i 711
1996-08-22 02:58:58 C 16 52 44.91 -19 38 13.1 i 711
1996-09-16 02:48:48 C 19 03 27.18 -31 54 21.3 z 689
1996-10-01 15:14:32 C 20 43 45.78 -32 57 04.0 413
1996-10-01 15:17:09 C 20 43 46.41 -32 57 03.7 413
1996-10-01 15:19:54 C 20 43 47.14 -32 57 01.9 413
1996-10-11 04:30:46 C 21 37 48.94 -30 49 47.2 i 711
1996-10-11 04:41:23 C 21 37 51.17 -30 49 39.0 i 711
1996-10-13 03:18:06 C 21 47 41.48 -30 13 25.7 i 711
1996-10-13 03:28:49 C 21 47 43.72 -30 13 17.3 i 711
1996-11-01 13:55:06 C 23 06 18.78 -22 48 21.4 413
1996-11-02 14:27:36 C 23 09 37.17 -22 23 29.2 413
1996-11-02 14:34:37 C 23 09 38.10 -22 23 21.8 413
2003-04-24 08:57:46 C 15 39 00.79 -03 34 28.3 c 926
2003-04-24 09:09:00 C 15 39 00.50 -03 34 23.7 c 926
2003-04-24 09:22:53 C 15 39 00.11 -03 34 17.4 c 926
2003-06-03 21:08:33 C 14 54 09.88 +02 29 17.3 c 246
2003-06-03 21:12:41 C 14 54 09.58 +02 29 17.9 c 246
2003-06-03 21:16:31 C 14 54 09.39 +02 29 18.0 c 246
2003-06-03 21:19:16 C 14 54 09.25 +02 29 19.9 c 246
2010-07-22 06:42:22 S 14 20 16.93 -02 53 44.0 L C51
2010-07-22 09:52:42 S 14 20 26.95 -02 55 45.3 L C51
2010-07-22 09:52:53 S 14 20 26.91 -02 55 46.4 L C51
2010-07-22 16:13:45 S 14 20 47.314 -02 59 47.22 L C51
2010-07-22 17:49:06 S 14 20 52.42 -03 00 47.4 L C51