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
2025-11-14 14:30:43 C 02 55 22.29 +21 43 01.4 V D29
2025-11-14 14:51:05 C 02 55 21.09 +21 42 56.5 V D29
2025-11-14 15:11:27 C 02 55 19.85 +21 42 51.3 V D29
2025-11-15 06:08:25 C 02 54 28.073 +21 39 04.86 V G96
2025-11-15 06:15:49 C 02 54 27.634 +21 39 02.92 V G96
2025-11-15 06:23:14 C 02 54 27.194 +21 39 01.04 V G96
2025-11-15 06:30:38 C 02 54 26.744 +21 38 59.21 V G96
2025-11-15 17:48:26 C 02 53 47.23 +21 36 05.1 V D29
2025-11-15 18:08:48 C 02 53 46.03 +21 35 59.8 V D29
2025-11-15 18:29:10 C 02 53 44.83 +21 35 54.3 V D29
2025-11-16 09:43:42 C 02 52 52.205 +21 31 59.77 V T05
2025-11-16 09:48:37 C 02 52 51.881 +21 31 58.84 V T05
2025-11-16 09:57:45 C 02 52 51.362 +21 31 56.35 V T05
2025-11-16 10:44:37 C 02 52 48.540 +21 31 44.11 V T05
2025-11-17 10:32:54 C 02 51 25.901 +21 25 29.93 V T05
2025-11-17 10:37:42 C 02 51 25.574 +21 25 26.54 V T05
2025-11-17 10:46:21 C 02 51 25.046 +21 25 23.70 V T05
2025-11-17 11:03:18 C 02 51 24.089 +21 25 19.27 V T05
2025-11-17 11:20:04 C 02 51 23.045 +21 25 14.83 X F51
2025-11-17 11:40:04 C 02 51 21.854 +21 25 09.40 X F51
2025-11-17 12:20:04 C 02 51 19.470 +21 24 58.48 X F51
2025-11-18 04:20:51 B 02 50 23.880 +21 20 36.71 q Y84
2025-11-18 04:25:16 B 02 50 23.606 +21 20 35.74 q Y84
2025-11-18 04:29:40 B 02 50 23.342 +21 20 34.51 q Y84
2025-11-18 11:08:08 C 02 50 01.10 +21 18 48.8 V D29
2025-11-18 11:28:30 C 02 49 59.91 +21 18 43.6 V D29
2025-11-18 11:48:52 C 02 49 58.70 +21 18 38.3 V D29
2025-11-19 11:31:46 C 02 48 36.68 +21 12 09.6 V D29
2025-11-19 11:52:08 C 02 48 35.48 +21 12 04.1 V D29
2025-11-19 12:12:30 C 02 48 34.28 +21 11 58.8 V D29
2025-11-20 15:27:47 C 02 47 00.046 +21 04 32.74 V P07
2025-11-20 15:55:34 C 02 46 58.457 +21 04 24.56 V P07
2025-11-20 16:45:27 C 02 46 55.490 +21 04 10.34 V P07
2025-11-20 17:10:10 C 02 46 54.019 +21 04 03.14 V P07
2025-11-20 17:42:20 C 02 46 52.145 +21 03 54.50 V P07
2025-11-20 18:06:04 C 02 46 50.698 +21 03 46.55 V P07
2025-11-20 20:39:33 B 02 46 42.533 +21 02 57.41 X R63
2025-11-20 21:01:32 B 02 46 41.258 +21 02 51.29 X R63
2025-11-20 21:23:29 B 02 46 39.960 +21 02 45.10 X R63
2025-11-22 20:08:27 B 02 44 00.890 +20 49 28.17 W 130
2025-11-22 20:15:41 B 02 44 00.467 +20 49 26.01 W 130
2025-11-22 20:21:44 B 02 44 00.116 +20 49 24.24 W 130
2025-11-22 20:28:08 B 02 43 59.742 +20 49 22.49 W 130
2025-11-24 09:21:39 C 02 41 56.033 +20 38 47.18 V T05
2025-11-24 09:26:55 C 02 41 55.726 +20 38 45.10 V T05
2025-11-24 09:35:12 C 02 41 55.219 +20 38 42.76 V T05
2025-11-24 09:49:04 C 02 41 54.423 +20 38 38.99 X F51
2025-11-24 09:49:20 C 02 41 54.401 +20 38 39.19 V T05
2025-11-24 10:07:53 C 02 41 53.338 +20 38 33.46 X F51
2025-11-24 10:26:36 C 02 41 52.265 +20 38 27.91 X F51