189865 (2003 NC)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.8055624239 ± 7.71e-08
Semi-major axis (a)1.4056993878 AU ± 4.34e-09
Inclination (i)21.57066207° ± 1.86e-05
Long. of Asc. Node (Ω)288.38766046° ± 1.04e-05
Arg. of Perihelion (ω)224.32508637° ± 1.46e-05
Mean Anomaly (M)191.87519167° ± 1.22e-05
Mean Motion (n)0.5913894771°/day ± 2.74e-09
Perihelion dist (q)0.27332078 AU ± 1.08e-07
Aphelion dist (Q)2.53807799 AU ± 1.09e-07
Orbital Period1.66662804 yr ± 7.73e-09
Physical Parameters
H (abs. magnitude)19.48
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.524″
Uncertainty0
Orbit TypeApollo
MOID0.037249 AU
Observations Used185
Oppositions8
Arc Total2003-2024
First Observation Used2003-07-01
Last Observation Used2024-09-30
Observations (191)
Date Type RA Dec Mag Band Observatory
2012-09-20 03:08:51 C 21 19 31.32 +13 01 40.7 u H21
2012-09-20 04:11:01 C 21 19 27.56 +13 01 09.1 u H21
2013-07-10 09:35:18 C 20 47 39.95 -09 11 22.5 q 448
2013-07-10 09:45:41 C 20 47 36.45 -09 11 23.4 q 448
2013-07-10 09:55:08 C 20 47 33.49 -09 11 25.7 q 448
2013-07-12 11:44:09 C 20 32 33.784 -09 19 29.30 L F51
2013-07-12 12:05:42 C 20 32 27.421 -09 19 32.42 L F51
2013-07-12 12:27:15 C 20 32 21.076 -09 19 35.51 L F51
2013-07-12 12:48:52 C 20 32 14.701 -09 19 38.82 L F51
2013-07-14 08:09:21 C 20 20 13.75 -09 25 16.4 r Y00
2013-07-14 08:10:45 C 20 20 13.37 -09 25 16.3 r Y00
2013-07-14 08:12:07 C 20 20 12.98 -09 25 17.8 r Y00
2018-06-21 10:47:29 C 23 43 50.75 -06 13 14.1 U 703
2018-06-21 10:52:39 C 23 43 48.69 -06 13 17.0 U 703
2018-06-21 10:57:50 C 23 43 46.78 -06 13 21.0 U 703
2018-06-21 11:03:01 C 23 43 44.69 -06 13 23.6 U 703
2018-06-25 08:29:14 C 23 07 08.45 -07 03 37.4 U 703
2018-06-25 08:36:32 C 23 07 05.54 -07 03 42.4 U 703
2018-06-25 08:51:10 C 23 06 59.54 -07 03 49.8 U 703
2018-07-05 09:32:04 C 21 31 05.77 -08 42 29.8 U 703
2018-07-05 09:39:22 C 21 31 03.00 -08 42 31.4 U 703
2018-07-05 09:46:40 C 21 31 00.20 -08 42 33.7 U 703
2018-07-05 09:53:58 C 21 30 57.45 -08 42 35.5 U 703
2018-07-12 11:06:57 C 20 34 14.860 -09 18 43.48 U F52
2018-07-12 11:21:20 C 20 34 10.542 -09 18 45.69 U F52
2018-07-12 11:36:39 C 20 34 05.947 -09 18 48.02 U F52
2018-07-13 12:54:23 C 20 26 50.11 -09 22 26.9 U T08
2018-07-13 13:09:57 C 20 26 45.63 -09 22 29.1 U T08
2018-07-13 13:25:32 C 20 26 41.23 -09 22 31.5 U T08
2018-07-13 13:41:07 C 20 26 36.78 -09 22 32.8 U T08
2018-07-17 11:59:54 C 20 02 29.23 -09 33 41.3 U T08
2018-07-17 12:15:11 C 20 02 25.63 -09 33 42.8 U T08
2018-07-17 12:29:42 C 20 02 22.17 -09 33 43.7 U T08
2018-07-17 12:45:10 C 20 02 18.54 -09 33 46.6 U T08
2023-06-25 08:00:53 C 23 09 40.88 -06 47 57.5 u 807
2023-06-25 08:06:49 C 23 09 38.44 -06 48 00.1 u 807
2023-06-25 08:12:44 C 23 09 36.01 -06 48 03.4 u 807
2023-06-25 10:49:40 C 23 08 33.209 -06 49 55.16 V 703
2023-06-25 10:51:28 C 23 08 32.442 -06 49 54.98 V 703
2023-06-25 10:55:05 C 23 08 30.854 -06 49 57.04 V 703
2023-06-26 09:13:56 C 22 59 32.536 -07 01 15.17 V G96
2023-06-26 09:21:28 C 22 59 29.461 -07 01 19.02 V G96
2023-06-26 09:28:58 C 22 59 26.387 -07 01 22.87 V G96
2023-06-26 09:36:29 C 22 59 23.287 -07 01 26.87 V G96
2023-06-26 10:40:54 C 22 58 56.878 -07 02 00.17 V 703
2023-06-26 10:44:26 C 22 58 55.463 -07 02 01.64 V 703
2023-06-26 10:46:12 C 22 58 54.642 -07 02 02.29 V 703
2023-06-28 08:38:31 C 22 40 17.818 -07 24 09.58 V 703
2023-06-28 08:46:35 C 22 40 14.495 -07 24 13.36 V 703
2023-06-28 08:54:41 C 22 40 11.161 -07 24 15.73 V 703