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
2003-07-18 13:51:26 C 20 00 16.73 -09 32 32.2 c 413
2003-07-18 13:53:26 C 20 00 16.28 -09 32 32.3 c 413
2003-07-20 05:40:47 C 19 51 51.24 -09 36 43.7 c 448
2003-07-20 05:44:29 C 19 51 50.47 -09 36 43.7 c 448
2003-07-20 05:54:55 C 19 51 48.28 -09 36 44.7 c 448
2003-07-21 12:54:12 C 19 45 41.93 -09 39 30.3 c 608
2003-07-21 13:25:18 C 19 45 35.91 -09 39 33.9 c 608
2003-08-09 05:04:53 C 18 53 02.51 -10 18 04.1 c 715
2003-08-09 05:09:20 C 18 53 02.38 -10 18 05.5 c 715
2003-08-30 07:18:06 C 18 39 11.704 -11 04 12.97 o 568
2003-09-02 02:43:06 C 18 39 16.95 -11 09 54.2 r 715
2003-09-02 02:52:50 C 18 39 17.01 -11 09 54.4 r 715
2004-09-28 23:58:14 C 22 07 12.42 +41 23 11.0 o J50
2004-09-28 23:59:48 C 22 07 12.13 +41 23 10.2 o J50
2004-09-29 00:01:16 C 22 07 11.86 +41 23 09.4 o J50
2004-09-29 00:17:34 C 22 07 08.97 +41 23 00.4 o J50
2004-09-29 00:19:03 C 22 07 08.62 +41 22 59.6 o J50
2004-09-29 00:20:34 C 22 07 08.35 +41 22 58.8 o J50
2004-10-07 05:31:44 C 21 32 41.01 +38 53 27.1 o 696
2004-10-07 05:35:40 C 21 32 40.32 +38 53 23.3 o 696
2004-10-07 05:41:51 C 21 32 39.30 +38 53 17.1 o 696
2007-09-17 01:52:37 C 21 25 09.82 +13 48 46.3 22.9 o H55
2007-09-17 02:17:16 C 21 25 08.18 +13 48 33.6 23.0 o H55
2008-06-29 12:12:04 C 22 20 20.26 -08 01 59.4 r F85
2008-06-29 12:27:57 C 22 20 13.86 -08 02 05.8 r F85
2008-06-29 12:43:50 C 22 20 07.48 -08 02 12.1 r F85
2008-07-01 07:59:18 C 22 03 11.81 -08 19 02.0 18.9 c 704
2008-07-01 08:13:37 C 22 03 06.10 -08 19 08.0 19.8 c 704
2008-07-01 08:27:56 C 22 03 00.54 -08 19 12.3 18.7 c 704
2008-07-01 08:42:20 C 22 02 54.85 -08 19 17.6 18.9 c 704
2008-07-01 08:56:49 C 22 02 49.13 -08 19 23.2 19.0 c 704
2008-07-07 06:20:53 C 21 10 47.23 -09 00 42.3 r H45
2008-07-07 06:22:57 C 21 10 46.52 -09 00 43.2 r H45
2008-07-07 06:24:44 C 21 10 45.91 -09 00 43.2 r H45
2008-07-07 06:26:21 C 21 10 45.33 -09 00 43.4 r H45
2008-07-07 06:29:37 C 21 10 44.17 -09 00 44.3 r H45
2008-07-15 05:42:54 C 20 13 55.46 -09 31 42.2 o H55
2008-07-15 05:47:19 C 20 13 54.34 -09 31 42.9 o H55
2008-07-15 05:51:58 C 20 13 53.15 -09 31 43.4 o H55
2008-07-15 05:56:51 C 20 13 51.91 -09 31 43.8 o H55
2008-07-17 05:49:04 C 20 02 25.90 -09 36 44.9 o H55
2008-07-17 05:54:20 C 20 02 24.68 -09 36 45.2 o H55
2008-07-17 05:59:57 C 20 02 23.40 -09 36 45.5 o H55
2012-09-12 02:37:59 C 21 31 48.34 +14 34 24.2 u H21
2012-09-12 03:08:39 C 21 31 46.24 +14 34 10.3 u H21
2012-09-12 03:39:58 C 21 31 44.04 +14 33 56.1 u H21
2012-09-13 01:39:42 C 21 30 14.72 +14 23 49.8 u H21
2012-09-13 02:20:43 C 21 30 11.93 +14 23 31.0 u H21
2012-09-13 03:03:34 C 21 30 08.98 +14 23 11.5 u H21
2012-09-20 02:40:39 C 21 19 33.03 +13 01 55.2 u H21