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
2024-08-12 13:19:00 C 23 15 46.363 -01 54 13.66 X F52
2024-09-03 06:51:00 C 22 57 47.819 -03 33 55.58 V G96
2024-09-03 06:59:13 C 22 57 47.513 -03 33 57.35 V G96
2024-09-03 07:07:25 C 22 57 47.164 -03 33 59.15 V G96
2024-09-03 07:15:39 C 22 57 46.861 -03 34 01.09 V G96
2024-09-05 09:32:48 C 22 55 53.497 -03 44 59.04 X F51
2024-09-05 10:11:20 C 22 55 52.010 -03 45 07.44 X F51
2024-09-05 10:30:32 C 22 55 51.260 -03 45 11.78 X F51
2024-09-11 08:33:17 C 22 50 32.106 -04 16 28.93 X F52
2024-09-11 08:50:28 C 22 50 31.439 -04 16 32.69 X F52
2024-09-11 09:07:36 C 22 50 30.791 -04 16 36.46 X F52
2024-09-11 09:24:46 C 22 50 30.136 -04 16 40.36 X F52
2024-09-23 09:25:13 C 22 40 18.849 -05 18 08.10 X F52
2024-09-23 09:41:22 C 22 40 18.323 -05 18 11.36 X F52
2024-09-23 09:57:39 C 22 40 17.759 -05 18 14.76 X F52
2024-09-23 10:13:51 C 22 40 17.195 -05 18 18.06 X F52
2024-09-25 03:51:55 C 22 38 56.094 -05 26 39.52 V G96
2024-09-25 03:59:18 C 22 38 55.921 -05 26 41.39 V G96
2024-09-25 04:06:40 C 22 38 55.608 -05 26 42.11 V G96
2024-09-25 04:14:03 C 22 38 55.374 -05 26 43.66 V G96
2024-10-01 07:06:06 C 22 34 28.554 -05 54 30.88 X F52
2024-10-01 07:10:52 C 22 34 28.422 -05 54 31.68 X F52
2024-10-01 07:23:27 C 22 34 28.048 -05 54 33.92 X F52
2024-10-01 07:40:52 C 22 34 27.534 -05 54 36.99 X F52
2024-10-01 07:45:37 C 22 34 27.401 -05 54 37.64 X F52
2024-10-01 07:58:13 C 22 34 27.021 -05 54 40.17 X F52
2024-10-01 08:02:59 C 22 34 26.894 -05 54 41.07 X F52
2024-10-07 04:04:04 C 22 30 46.310 -06 18 16.02 V G96
2024-10-07 04:11:33 C 22 30 46.055 -06 18 17.78 V G96
2024-10-07 04:19:06 C 22 30 45.925 -06 18 18.50 V G96
2024-10-07 04:26:36 C 22 30 45.738 -06 18 19.80 V G96
2025-07-01 14:07:03 C 02 23 41.191 +16 53 04.43 X F52
2025-07-01 14:14:24 C 02 23 41.575 +16 53 06.54 X F52
2025-07-01 14:21:42 C 02 23 41.922 +16 53 08.66 X F52
2025-07-01 14:28:59 C 02 23 42.285 +16 53 10.44 X F52
2025-08-21 13:31:49 C 03 17 36.877 +21 30 11.65 X F52
2025-08-21 13:50:21 C 03 17 37.493 +21 30 15.08 X F52
2025-08-21 14:27:35 C 03 17 38.715 +21 30 21.45 X F52
2025-08-31 09:04:20 C 03 24 48.006 +22 08 17.12 V G96
2025-08-31 09:11:43 C 03 24 48.247 +22 08 18.28 V G96
2025-08-31 09:19:07 C 03 24 48.463 +22 08 19.00 V G96
2025-08-31 09:26:30 C 03 24 48.629 +22 08 20.54 V G96
2025-09-03 13:14:27 C 03 26 45.744 +22 19 21.69 X F52
2025-09-03 13:32:48 C 03 26 46.169 +22 19 24.33 X F52
2025-09-03 13:51:22 C 03 26 46.608 +22 19 27.06 X F52
2025-09-03 14:10:22 C 03 26 47.048 +22 19 29.72 X F52
2025-09-25 11:19:02 C 03 34 05.416 +23 15 56.31 X F52
2025-09-25 11:38:11 C 03 34 05.412 +23 15 56.92 X F52
2025-09-25 11:57:24 C 03 34 05.427 +23 15 59.14 X F52
2025-10-13 12:41:04 C 03 29 28.210 +23 27 38.59 V T05