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
2019-03-15 08:33:37 C 08 33 23.51 +09 41 56.1 V T08
2019-03-15 08:35:30 C 08 33 23.70 +09 41 54.8 V T08
2019-03-15 19:31:49 C 08 34 36.98 +09 34 36.0 q 006
2019-03-15 19:34:03 C 08 34 37.22 +09 34 34.5 q 006
2019-03-15 19:36:03 C 08 34 37.41 +09 34 33.3 q 006
2019-03-15 19:38:03 C 08 34 37.61 +09 34 32.5 q 006
2019-03-15 19:40:03 C 08 34 37.84 +09 34 30.7 q 006
2019-03-15 19:42:33 C 08 34 38.09 +09 34 28.7 q 006
2019-03-15 19:44:33 C 08 34 38.30 +09 34 27.2 q 006
2019-03-15 19:46:33 C 08 34 38.51 +09 34 26.3 q 006
2019-03-19 09:42:52 C 08 44 23.67 +08 38 15.6 V T08
2019-03-19 09:56:18 C 08 44 25.15 +08 38 06.7 V T08
2019-03-19 10:09:57 C 08 44 26.66 +08 37 57.6 V T08
2019-03-19 10:12:05 C 08 44 26.89 +08 37 56.2 V T08
2019-03-20 20:54:44 C 08 48 34.08 +08 14 49.8 V K74
2019-03-20 20:58:57 C 08 48 34.56 +08 14 47.0 V K74
2019-03-20 21:18:37 C 08 48 36.79 +08 14 33.9 V K74
2019-03-20 21:22:31 C 08 48 37.23 +08 14 31.3 V K74
2019-03-21 10:45:12 C 08 50 12.24 +08 05 53.8 V T08
2019-03-21 10:57:25 C 08 50 13.63 +08 05 45.7 V T08
2019-03-21 11:09:51 C 08 50 15.06 +08 05 37.2 V T08
2019-03-21 11:22:04 C 08 50 16.48 +08 05 28.9 V T08
2019-03-21 19:26:24 C 08 51 17.00 +08 00 00.2 q 006
2019-03-21 19:28:54 C 08 51 17.27 +07 59 58.5 q 006
2019-03-21 19:31:24 C 08 51 17.60 +07 59 56.8 q 006
2019-03-21 19:33:54 C 08 51 17.82 +07 59 55.7 q 006
2019-03-21 19:36:24 C 08 51 18.19 +07 59 53.7 q 006
2019-03-21 19:39:24 C 08 51 18.47 +07 59 51.9 q 006
2019-03-21 19:42:59 C 08 51 18.89 +07 59 49.5 q 006
2019-03-21 19:43:38 C 08 51 18.74 +07 59 45.7 V K74
2019-03-21 19:45:59 C 08 51 19.25 +07 59 47.5 q 006
2019-03-21 19:46:16 C 08 51 19.02 +07 59 44.2 V K74
2019-03-21 20:12:45 C 08 51 22.08 +07 59 26.5 V K74
2019-03-21 20:16:46 C 08 51 22.54 +07 59 23.9 V K74
2019-03-21 20:37:57 C 08 51 24.98 +07 59 09.9 V K74
2019-03-21 20:39:33 C 08 51 25.17 +07 59 08.8 V K74
2019-03-21 21:11:12 C 08 51 28.82 +07 58 50.6 a 233
2019-03-21 21:18:23 C 08 51 29.61 +07 58 44.7 a 233
2019-03-21 21:24:26 C 08 51 30.33 +07 58 40.8 a 233
2019-03-21 21:30:29 C 08 51 31.01 +07 58 36.9 a 233
2019-03-21 21:36:32 C 08 51 31.71 +07 58 32.8 a 233
2019-03-22 20:00:06 C 08 54 15.64 +07 43 46.0 q 006
2019-03-22 20:02:06 C 08 54 15.88 +07 43 44.8 q 006
2019-03-22 20:03:36 C 08 54 16.04 +07 43 44.0 q 006
2019-03-22 20:06:06 C 08 54 16.34 +07 43 42.1 q 006
2019-03-22 20:08:06 C 08 54 16.58 +07 43 40.8 q 006
2019-03-22 20:10:06 C 08 54 16.82 +07 43 39.0 q 006
2019-03-22 20:11:36 C 08 54 16.99 +07 43 38.3 q 006
2019-03-22 20:14:06 C 08 54 17.27 +07 43 36.5 q 006
2019-03-22 20:55:08 C 08 54 21.82 +07 43 08.3 q L05