18736 (1998 NU)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4911399789 ± 8.50e-09
Semi-major axis (a)2.3496959498 AU ± 1.22e-09
Inclination (i)2.80616050° ± 8.43e-07
Long. of Asc. Node (Ω)297.42195380° ± 1.66e-05
Arg. of Perihelion (ω)222.90480980° ± 1.67e-05
Mean Anomaly (M)309.18689309° ± 6.93e-07
Mean Motion (n)0.2736495723°/day ± 2.12e-10
Perihelion dist (q)1.19566633 AU ± 2.00e-08
Aphelion dist (Q)3.50372557 AU ± 2.01e-08
Orbital Period3.60178266 yr ± 2.80e-09
Physical Parameters
H (abs. magnitude)15.98
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.233″
Uncertainty0
Orbit TypeAmor
MOID0.207942 AU
Observations Used1910
Oppositions52
Arc Total1954-2026
First Observation Used1954-05-25
Last Observation Used2026-01-12
Observations (2071)
Date Type RA Dec Mag Band Observatory
2007-11-06 22:35:21 C 03 58 31.11 +25 26 49.8 r A13
2007-11-06 23:02:03 C 03 58 29.91 +25 26 47.8 r A13
2007-11-06 23:57:05 C 03 58 27.42 +25 26 43.5 r A13
2007-11-07 07:40:54 C 03 58 07.05 +25 26 07.7 18.1 c 704
2007-11-07 07:58:44 C 03 58 06.27 +25 26 05.8 18.4 c 704
2007-11-07 08:16:34 C 03 58 05.43 +25 26 04.1 18.3 c 704
2007-11-07 08:34:26 C 03 58 04.62 +25 26 02.8 18.4 c 704
2007-11-07 08:52:17 C 03 58 03.78 +25 26 01.2 18.3 c 704
2007-11-11 00:16:29 C 03 53 58.59 +25 17 19.0 c A24
2007-11-11 00:17:58 C 03 53 58.50 +25 17 18.9 c A24
2007-11-11 00:35:49 C 03 53 57.60 +25 17 16.9 c A24
2007-11-11 00:55:09 C 03 53 56.61 +25 17 14.4 c A24
2007-11-11 01:13:02 C 03 53 55.73 +25 17 12.6 c A24
2007-11-11 01:14:29 C 03 53 55.62 +25 17 11.8 c A24
2007-11-17 00:52:45 C 03 46 19.83 +24 57 24.4 c A24
2007-11-17 00:54:12 C 03 46 19.75 +24 57 23.9 c A24
2007-11-17 01:12:08 C 03 46 18.70 +24 57 21.1 c A24
2007-11-17 01:31:30 C 03 46 17.59 +24 57 17.6 c A24
2007-11-17 01:49:25 C 03 46 16.54 +24 57 14.9 c A24
2007-11-17 01:50:52 C 03 46 16.48 +24 57 14.3 c A24
2007-11-17 08:07:16 C 03 45 55.47 +24 56 15.3 r G96
2007-11-17 08:16:59 C 03 45 54.90 +24 56 13.5 r G96
2007-11-17 08:36:28 C 03 45 53.78 +24 56 10.3 r G96
2007-11-19 00:44:15 C 03 43 36.42 +24 49 16.4 r 130
2007-11-19 00:45:41 C 03 43 36.35 +24 49 16.0 r 130
2007-11-19 00:48:35 C 03 43 36.20 +24 49 15.5 r 130
2007-11-19 00:50:45 C 03 43 36.06 +24 49 15.1 r 130
2007-11-20 03:13:30 C 03 42 04.68 +24 44 27.5 18.1 c 704
2007-11-20 03:31:26 C 03 42 03.60 +24 44 24.7 18.0 c 704
2007-11-20 03:49:24 C 03 42 02.51 +24 44 21.9 17.8 c 704
2007-11-20 04:07:22 C 03 42 01.43 +24 44 18.4 17.9 c 704
2007-11-20 04:26:14 C 03 42 00.30 +24 44 15.3 17.8 c 704
2007-11-28 06:48:16 C 03 30 16.84 +24 02 12.8 r H45
2007-11-28 06:51:55 C 03 30 16.63 +24 02 11.6 r H45
2007-11-28 06:54:03 C 03 30 16.49 +24 02 11.0 r H45
2007-11-28 06:56:14 C 03 30 16.34 +24 02 10.5 r H45
2007-11-28 06:58:33 C 03 30 16.19 +24 02 10.1 r H45
2007-11-30 19:11:40 C 03 26 36.94 +23 47 02.2 r 170
2007-11-30 19:21:30 C 03 26 36.33 +23 46 59.7 r 170
2007-11-30 19:25:47 C 03 26 36.07 +23 46 58.7 r 170
2007-12-03 20:46:58 C 03 22 12.04 +23 27 34.9 c A24
2007-12-03 20:48:25 C 03 22 11.96 +23 27 34.5 c A24
2007-12-03 21:10:34 C 03 22 10.61 +23 27 28.4 c A24
2007-12-03 21:34:10 C 03 22 09.16 +23 27 22.2 c A24
2007-12-03 21:56:18 C 03 22 07.79 +23 27 15.8 c A24
2007-12-03 21:57:45 C 03 22 07.75 +23 27 15.6 c A24
2007-12-04 05:41:54 C 03 21 40.36 +23 25 10.7 w 699
2007-12-04 06:18:45 C 03 21 38.09 +23 25 00.6 w 699
2007-12-04 06:55:37 C 03 21 35.83 +23 24 50.7 w 699
2007-12-04 07:32:30 C 03 21 33.56 +23 24 40.4 w 699