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
2023-06-28 09:02:45 C 22 40 07.792 -07 24 21.28 V 703
2023-06-29 08:56:20 C 22 30 24.494 -07 35 13.27 V 703
2023-06-29 08:58:08 C 22 30 23.836 -07 35 14.64 V 703
2023-06-29 08:59:56 C 22 30 23.018 -07 35 14.96 V 703
2023-06-29 09:01:44 C 22 30 22.374 -07 35 16.04 V 703
2023-06-30 09:33:38 C 22 20 24.976 -07 45 52.52 V 703
2023-06-30 09:35:26 C 22 20 24.223 -07 45 53.42 V 703
2023-06-30 09:37:14 C 22 20 23.485 -07 45 54.83 V 703
2023-06-30 09:39:02 C 22 20 22.744 -07 45 55.19 V 703
2023-07-01 08:16:17 C 22 11 16.184 -07 55 10.70 V 703
2023-07-01 08:24:02 C 22 11 13.002 -07 55 14.84 V 703
2023-07-01 08:31:48 C 22 11 09.942 -07 55 18.23 V 703
2023-07-01 08:39:33 C 22 11 06.713 -07 55 20.89 V 703
2023-07-08 10:50:09 C 21 06 56.873 -08 48 38.48 V V00
2023-07-08 10:58:06 C 21 06 54.083 -08 48 40.36 V V00
2023-07-08 11:06:00 C 21 06 51.322 -08 48 42.08 V V00
2023-07-08 11:13:54 C 21 06 48.553 -08 48 43.88 V V00
2023-07-09 09:14:54 C 20 59 21.822 -08 53 38.36 V G96
2023-07-09 09:21:10 C 20 59 19.709 -08 53 39.62 V G96
2023-07-09 09:27:25 C 20 59 17.581 -08 53 41.10 V G96
2023-07-09 09:33:40 C 20 59 15.454 -08 53 42.40 V G96
2023-07-13 06:33:39 C 20 30 25.193 -09 10 06.60 V W68
2023-07-13 06:38:17 C 20 30 23.767 -09 10 07.75 V W68
2023-07-13 06:46:58 C 20 30 21.257 -09 10 09.19 V W68
2023-07-13 07:03:20 C 20 30 16.490 -09 10 11.35 V W68
2023-07-13 10:25:28 C 20 29 18.791 -09 11 07.80 V U68
2023-07-13 10:30:17 C 20 29 17.402 -09 11 08.39 V U68
2023-07-13 10:55:55 C 20 29 09.984 -09 11 12.06 V U68
2023-07-13 11:00:44 C 20 29 08.600 -09 11 12.46 V U68
2023-07-17 22:07:23 C 20 01 38.14 -09 24 56.1 X M26
2023-07-17 22:21:25 C 20 01 34.89 -09 24 57.0 X M26
2023-07-22 23:58:54 C 19 36 55.877 -09 36 48.28 V A16
2023-07-23 00:40:25 C 19 36 48.319 -09 36 59.04 V A16
2023-07-23 01:01:10 C 19 36 44.626 -09 37 00.73 V A16
2024-09-01 05:12:10 C 23 45 30.74 +39 49 46.5 V H21
2024-09-01 05:32:42 C 23 45 28.72 +39 49 58.2 V H21
2024-09-03 05:58:38 C 23 40 31.43 +40 16 11.2 V H21
2024-09-03 06:00:39 C 23 40 31.25 +40 16 13.0 V H21
2024-09-30 04:27:04 C 22 02 36.744 +40 45 18.58 V G96
2024-09-30 04:34:39 C 22 02 35.344 +40 45 13.57 V G96
2024-09-30 04:42:16 C 22 02 33.983 +40 45 09.18 V G96