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
2025-12-10 08:43:48 C 02 23 50.251 +18 48 42.55 V T05
2025-12-11 08:23:42 C 02 22 59.438 +18 42 29.56 V T05
2025-12-11 08:28:26 C 02 22 59.268 +18 42 28.15 V T05
2025-12-11 08:37:09 C 02 22 58.937 +18 42 26.50 V T05
2025-12-11 08:51:43 C 02 22 58.414 +18 42 22.25 V T05
2025-12-11 12:30:03 C 02 22 51.091 +18 41 31.13 V P07
2025-12-11 13:26:38 C 02 22 48.965 +18 41 16.08 V P07
2025-12-11 13:48:50 C 02 22 48.175 +18 41 11.08 V P07
2025-12-11 13:51:44 C 02 22 48.029 +18 41 09.78 V P07
2025-12-11 14:18:39 C 02 22 47.078 +18 41 02.80 V P07
2025-12-11 14:38:21 C 02 22 46.356 +18 40 57.94 V P07
2025-12-14 08:32:13 C 02 20 38.563 +18 24 19.69 V T05
2025-12-14 08:36:59 C 02 20 38.446 +18 24 18.79 V T05
2025-12-14 09:12:59 C 02 20 37.238 +18 24 09.83 V T05
2025-12-14 09:38:37 C 02 20 36.451 +18 24 03.17 V T05
2025-12-15 08:35:48 C 02 19 56.527 +18 18 34.52 V T08
2025-12-15 08:39:58 C 02 19 56.338 +18 18 33.19 V T08
2025-12-15 09:13:54 C 02 19 55.385 +18 18 24.66 V T08
2025-12-15 09:25:45 C 02 19 54.960 +18 18 21.67 V T08
2025-12-17 11:28:50 C 02 18 36.26 +18 06 52.9 V D29
2025-12-17 11:49:12 C 02 18 35.72 +18 06 48.2 V D29
2025-12-17 12:09:33 C 02 18 35.19 +18 06 43.9 V D29
2025-12-19 14:39:02 C 02 17 26.57 +17 55 57.0 V D29
2025-12-19 14:59:23 C 02 17 26.11 +17 55 52.9 V D29
2025-12-19 15:19:43 C 02 17 25.67 +17 55 48.2 V D29
2025-12-22 07:40:24 C 02 16 15.838 +17 43 19.52 V T05
2025-12-22 07:45:02 C 02 16 15.790 +17 43 18.52 V T05
2025-12-22 07:54:53 C 02 16 15.593 +17 43 16.54 V T05
2025-12-22 08:09:34 C 02 16 15.360 +17 43 14.16 V T05
2025-12-22 21:37:28 B 02 16 03.211 +17 40 45.41 X R63
2025-12-22 21:50:03 B 02 16 03.031 +17 40 43.21 X R63
2025-12-22 22:02:37 B 02 16 02.801 +17 40 40.87 X R63
2025-12-27 07:33:49 C 02 14 56.837 +17 23 52.37 V T08
2025-12-27 07:37:57 C 02 14 56.849 +17 23 52.01 V T08
2025-12-27 07:46:00 C 02 14 56.753 +17 23 50.96 V T08
2025-12-27 08:01:59 C 02 14 56.662 +17 23 48.98 V T08
2025-12-28 07:16:05 C 02 14 49.217 +17 20 38.94 V T05
2025-12-28 07:20:13 C 02 14 49.176 +17 20 38.22 V T05
2025-12-28 07:28:47 C 02 14 49.171 +17 20 37.86 V T05
2025-12-28 07:43:18 C 02 14 49.082 +17 20 36.20 V T05
2026-01-02 06:52:27 C 02 14 50.026 +17 07 37.70 V T08
2026-01-02 07:06:45 C 02 14 50.107 +17 07 35.36 V T08
2026-01-02 07:11:21 C 02 14 50.134 +17 07 36.08 V T08
2026-01-02 07:18:41 C 02 14 50.191 +17 07 34.90 V T08
2026-01-02 07:20:33 C 02 14 50.143 +17 07 33.85 V T08
2026-01-02 07:25:30 C 02 14 50.146 +17 07 33.89 V T08
2026-01-02 07:51:57 C 02 14 50.302 +17 07 31.62 V T08
2026-01-03 07:18:23 C 02 14 58.213 +17 05 36.85 X F52
2026-01-03 07:38:07 C 02 14 58.324 +17 05 34.87 X F52
2026-01-03 07:58:01 C 02 14 58.422 +17 05 33.12 X F52