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
2014-09-24 08:21:04 C 02 11 44.33 +17 37 24.0 o 691
2014-09-24 08:50:28 C 02 11 43.60 +17 37 22.2 o 691
2014-09-24 09:19:50 C 02 11 42.78 +17 37 19.5 o 691
2014-10-01 09:15:28 C 02 06 37.80 +17 20 08.8 q 703
2014-10-01 09:28:22 C 02 06 37.37 +17 20 06.8 q 703
2014-10-01 09:41:14 C 02 06 36.99 +17 20 04.3 q 703
2014-10-01 09:54:03 C 02 06 36.44 +17 20 03.0 q 703
2014-10-12 10:13:59 C 01 56 16.49 +16 36 47.6 q 703
2014-10-12 10:25:35 C 01 56 15.90 +16 36 44.4 q 703
2014-10-12 10:37:11 C 01 56 15.35 +16 36 42.2 q 703
2014-10-12 10:48:47 C 01 56 14.86 +16 36 39.9 q 703
2014-10-14 04:13:42 C 01 54 25.45 +16 28 09.9 o 691
2014-10-14 04:43:01 C 01 54 24.13 +16 28 03.6 o 691
2014-10-14 05:12:21 C 01 54 22.79 +16 27 57.4 o 691
2014-10-14 08:07:33 C 01 54 14.73 +16 27 20.8 q G96
2014-10-14 08:21:02 C 01 54 14.13 +16 27 17.9 q G96
2014-10-14 08:34:31 C 01 54 13.50 +16 27 14.9 q G96
2014-10-14 08:48:02 C 01 54 12.88 +16 27 12.0 q G96
2014-10-22 07:11:12 C 01 45 17.78 +15 42 35.0 q G96
2014-10-22 07:23:02 C 01 45 17.19 +15 42 32.2 q G96
2014-10-22 07:39:27 C 01 45 16.38 +15 42 27.9 q G96
2014-10-22 07:51:17 C 01 45 15.79 +15 42 24.9 q G96
2014-10-23 06:01:59 C 01 44 11.47 +15 36 42.8 R G45
2014-10-23 06:18:25 C 01 44 10.68 +15 36 38.9 R G45
2014-10-23 06:34:46 C 01 44 09.83 +15 36 35.3 R G45
2014-10-23 07:15:37 C 01 44 07.79 +15 36 23.6 R G45
2014-10-23 07:15:43 C 01 44 07.82 +15 36 23.5 R G45
2014-10-24 05:52:09 C 01 43 02.01 +15 30 29.9 R G45
2014-10-24 06:32:57 C 01 42 59.97 +15 30 19.1 R G45
2014-10-24 06:33:03 C 01 42 59.92 +15 30 18.6 R G45
2014-10-24 06:50:17 C 01 42 59.08 +15 30 14.5 R G45
2014-10-24 07:06:20 C 01 42 58.28 +15 30 10.3 R G45
2014-10-25 05:44:57 C 01 41 52.03 +15 24 08.6 q 703
2014-10-25 06:11:20 C 01 41 50.88 +15 24 03.9 q 703
2014-10-25 06:24:31 C 01 41 50.28 +15 23 59.8 q 703
2014-10-25 11:17:07 C 01 41 35.814 +15 22 42.66 L F51
2014-10-25 11:34:43 C 01 41 34.928 +15 22 37.86 L F51
2014-10-25 11:52:22 C 01 41 34.047 +15 22 33.16 L F51
2014-10-25 12:10:03 C 01 41 33.160 +15 22 28.30 L F51
2014-10-26 07:37:01 C 01 40 36.32 +15 17 13.7 R G45
2014-10-26 07:53:04 C 01 40 35.46 +15 17 08.8 R G45
2014-10-26 08:09:05 C 01 40 34.73 +15 17 04.4 R G45
2014-10-26 08:25:07 C 01 40 33.90 +15 16 59.3 R G45
2014-10-26 08:41:05 C 01 40 33.14 +15 16 56.1 R G45
2014-10-26 09:05:40 C 01 40 31.97 +15 16 48.5 R G45
2014-10-31 02:19:51 C 01 35 02.20 +14 45 23.2 o 691
2014-10-31 03:10:27 C 01 34 59.72 +14 45 09.0 o 691
2014-10-31 03:39:43 C 01 34 58.33 +14 45 00.8 o 691
2014-11-01 03:56:07 C 01 33 48.34 +14 38 05.1 q 703
2014-11-01 04:06:18 C 01 33 47.84 +14 38 04.2 q 703