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
2019-02-15 20:32:01 C 07 44 54.54 +16 23 31.1 V G33
2019-02-15 20:32:53 C 07 44 54.57 +16 23 30.5 V G33
2019-02-15 20:33:53 C 07 44 54.59 +16 23 30.0 V G33
2019-02-15 20:37:02 C 07 44 54.68 +16 23 28.4 V G33
2019-02-15 20:37:54 C 07 44 54.70 +16 23 28.3 V G33
2019-02-15 20:38:47 C 07 44 54.73 +16 23 27.5 V G33
2019-02-15 20:41:29 C 07 44 54.82 +16 23 25.8 V G33
2019-02-15 20:42:20 C 07 44 54.83 +16 23 25.5 V G33
2019-02-15 20:43:12 C 07 44 54.83 +16 23 25.2 V G33
2019-02-15 20:45:54 C 07 44 54.92 +16 23 23.6 V G33
2019-02-15 20:46:51 C 07 44 54.96 +16 23 22.8 V G33
2019-02-15 20:47:46 C 07 44 55.00 +16 23 22.6 V G33
2019-02-15 21:53:00 C 07 44 56.69 +16 22 50.2 q 160
2019-02-15 21:55:49 C 07 44 56.76 +16 22 48.7 q 160
2019-02-15 21:58:41 C 07 44 56.84 +16 22 47.0 q 160
2019-02-16 20:26:15 C 07 45 44.93 +16 10 20.0 q 108
2019-02-16 20:34:27 C 07 45 45.17 +16 10 15.6 q 108
2019-02-16 21:56:33 C 07 45 47.62 +16 09 30.0 q 160
2019-02-16 21:59:29 C 07 45 47.71 +16 09 28.0 q 160
2019-02-16 22:02:29 C 07 45 47.79 +16 09 26.6 q 160
2019-02-18 19:41:44 C 07 47 37.21 +15 43 43.6 q K74
2019-02-18 19:42:37 C 07 47 37.25 +15 43 43.1 q K74
2019-02-18 20:06:00 C 07 47 38.10 +15 43 30.0 q K74
2019-02-19 02:39:07 C 07 47 54.12 +15 40 29.6 q 834
2019-02-19 03:28:08 C 07 47 55.90 +15 40 01.1 q 834
2019-02-19 18:37:22 C 07 48 37.85 +15 30 44.8 q K73
2019-02-19 18:42:42 C 07 48 38.04 +15 30 41.8 q K73
2019-02-19 18:46:55 C 07 48 38.21 +15 30 39.6 q K73
2019-02-20 23:43:44 C 07 49 58.62 +15 13 55.3 V Z80
2019-02-20 23:44:40 C 07 49 58.67 +15 13 54.7 V Z80
2019-02-20 23:45:39 C 07 49 58.71 +15 13 54.0 V Z80
2019-02-20 23:46:40 C 07 49 58.74 +15 13 53.4 V Z80
2019-02-20 23:47:39 C 07 49 58.79 +15 13 52.6 V Z80
2019-02-20 23:48:40 C 07 49 58.81 +15 13 52.1 V Z80
2019-02-20 23:49:39 C 07 49 58.89 +15 13 51.5 V Z80
2019-02-20 23:50:40 C 07 49 58.92 +15 13 50.9 V Z80
2019-02-20 23:51:40 C 07 49 58.95 +15 13 50.6 V Z80
2019-02-20 23:52:39 C 07 49 59.00 +15 13 49.8 V Z80
2019-02-22 20:15:50 C 07 52 17.93 +14 48 05.2 q 006
2019-02-22 20:19:50 C 07 52 18.13 +14 48 03.0 q 006
2019-02-22 20:24:30 C 07 52 18.34 +14 48 00.2 q 006
2019-02-22 20:28:29 C 07 52 18.53 +14 47 58.0 q 006
2019-02-22 20:32:29 C 07 52 18.72 +14 47 55.6 q 006
2019-02-22 20:37:04 C 07 52 18.94 +14 47 53.0 q 006
2019-02-22 20:41:03 C 07 52 19.12 +14 47 50.7 q 006
2019-02-22 20:45:04 C 07 52 19.32 +14 47 48.3 q 006
2019-02-23 14:09:55 C 07 53 16.85 +14 37 38.9 q D29
2019-02-23 14:30:16 C 07 53 17.84 +14 37 26.9 q D29
2019-02-23 14:50:38 C 07 53 18.83 +14 37 14.7 q D29
2019-02-23 19:48:18 C 07 53 36.71 +14 34 10.2 V G34