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
2007-12-04 21:19:46 C 03 20 45.36 +23 20 52.7 c A24
2007-12-04 21:21:11 C 03 20 45.27 +23 20 52.3 c A24
2007-12-04 21:39:03 C 03 20 44.18 +23 20 47.3 c A24
2007-12-04 21:58:20 C 03 20 43.00 +23 20 42.0 c A24
2007-12-04 22:16:11 C 03 20 41.91 +23 20 37.1 c A24
2007-12-04 22:17:37 C 03 20 41.82 +23 20 36.6 c A24
2007-12-05 06:35:22 C 03 20 12.59 +23 18 20.8 r H45
2007-12-05 06:36:38 C 03 20 12.54 +23 18 20.3 r H45
2007-12-05 06:39:16 C 03 20 12.35 +23 18 19.7 r H45
2007-12-05 06:40:20 C 03 20 12.31 +23 18 19.2 r H45
2007-12-05 06:42:28 C 03 20 12.18 +23 18 18.7 r H45
2007-12-05 20:41:34 C 03 19 23.94 +23 14 25.8 c A24
2007-12-05 20:42:59 C 03 19 23.87 +23 14 25.2 c A24
2007-12-10 04:42:05 C 03 13 36.49 +22 45 05.6 18.2 c 704
2007-12-10 05:00:47 C 03 13 35.48 +22 45 01.4 18.2 c 704
2007-12-10 05:19:15 C 03 13 34.48 +22 44 56.3 18.3 c 704
2007-12-10 05:37:46 C 03 13 33.51 +22 44 48.7 18.9 c 704
2007-12-10 05:56:17 C 03 13 32.31 +22 44 44.3 18.7 c 704
2007-12-12 04:50:17 C 03 11 06.21 +22 31 23.2 17.9 c 704
2007-12-12 05:08:53 C 03 11 05.21 +22 31 17.8 18.2 c 704
2007-12-12 05:27:29 C 03 11 04.15 +22 31 12.9 18.1 c 704
2007-12-12 05:46:07 C 03 11 03.24 +22 31 07.2 18.0 c 704
2007-12-12 06:04:44 C 03 11 02.23 +22 30 59.3 19.4 c 704
2007-12-13 04:43:41 C 03 09 54.50 +22 24 34.6 17.8 c 704
2007-12-13 05:02:17 C 03 09 53.52 +22 24 29.2 18.0 c 704
2007-12-13 05:20:49 C 03 09 52.57 +22 24 23.8 18.1 c 704
2007-12-13 05:39:25 C 03 09 51.61 +22 24 19.0 17.8 c 704
2007-12-13 05:57:59 C 03 09 50.65 +22 24 13.4 18.0 c 704
2007-12-14 01:46:50 C 03 08 53.43 +22 18 35.3 o 691
2007-12-14 02:06:03 C 03 08 52.49 +22 18 30.0 o 691
2007-12-14 02:25:16 C 03 08 51.53 +22 18 24.8 o 691
2007-12-15 04:41:52 C 03 07 36.86 +22 10 59.7 18.3 c 704
2007-12-15 05:00:20 C 03 07 35.98 +22 10 54.5 18.3 c 704
2007-12-15 05:18:46 C 03 07 35.08 +22 10 48.8 18.6 c 704
2007-12-15 05:37:10 C 03 07 34.16 +22 10 43.8 18.4 c 704
2007-12-15 05:55:36 C 03 07 33.28 +22 10 38.1 18.4 c 704
2007-12-16 18:42:20 C 03 05 54.56 +22 00 20.2 c A24
2007-12-16 18:43:27 C 03 05 54.50 +22 00 19.6 c A24
2007-12-16 19:00:08 C 03 05 53.77 +22 00 15.2 c A24
2007-12-16 19:17:55 C 03 05 52.97 +22 00 10.6 c A24
2007-12-16 19:52:25 C 03 05 51.38 +22 00 01.5 c A24
2007-12-16 20:10:14 C 03 05 50.59 +21 59 56.6 c A24
2007-12-16 20:26:56 C 03 05 49.82 +21 59 51.8 c A24
2007-12-16 20:28:02 C 03 05 49.78 +21 59 51.7 c A24
2007-12-17 02:24:18 C 03 05 34.45 +21 58 13.9 r H45
2007-12-17 02:25:52 C 03 05 34.36 +21 58 13.3 r H45
2007-12-17 02:29:15 C 03 05 34.20 +21 58 12.6 r H45
2007-12-17 02:33:33 C 03 05 34.00 +21 58 11.4 r H45
2007-12-17 02:35:35 C 03 05 33.92 +21 58 10.7 r H45
2007-12-17 21:24:52 C 03 04 45.77 +21 52 58.1 c A24