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
2019-03-28 07:14:16 C 09 10 41.847 +06 17 05.77 U F51
2019-03-28 07:30:24 C 09 10 43.800 +06 16 54.89 U F51
2019-03-28 07:46:31 C 09 10 45.720 +06 16 44.52 U F51
2019-03-28 08:50:36 C 09 10 53.45 +06 16 01.9 V T05
2019-03-28 09:03:11 C 09 10 54.98 +06 15 53.6 V T05
2019-03-28 09:16:41 C 09 10 56.61 +06 15 44.5 V T05
2019-03-28 09:29:22 C 09 10 58.15 +06 15 36.1 V T05
2019-03-28 20:06:52 C 09 12 20.95 +06 08 24.6 q L05
2019-03-28 20:22:16 C 09 12 22.88 +06 08 14.7 q L05
2019-03-29 17:11:04 C 09 15 03.72 +05 54 41.4 q C97
2019-03-29 17:13:15 C 09 15 04.02 +05 54 40.6 q C97
2019-03-29 17:15:27 C 09 15 04.31 +05 54 37.8 q C97
2019-03-29 17:17:38 C 09 15 04.57 +05 54 36.4 q C97
2019-03-29 20:21:05 C 09 15 28.59 +05 52 27.5 q 006
2019-03-29 20:23:45 C 09 15 28.92 +05 52 25.6 q 006
2019-03-29 20:25:25 C 09 15 29.12 +05 52 24.6 q 006
2019-03-29 20:28:05 C 09 15 29.45 +05 52 22.7 q 006
2019-03-29 20:30:25 C 09 15 29.79 +05 52 21.0 q 006
2019-03-29 20:32:55 C 09 15 30.04 +05 52 19.7 q 006
2019-03-29 20:35:56 C 09 15 30.46 +05 52 17.9 q 006
2019-03-29 20:37:56 C 09 15 30.67 +05 52 16.4 q 006
2019-03-29 22:37:52 C 09 15 45.36 +05 50 56.1 q 160
2019-03-29 22:40:41 C 09 15 45.67 +05 50 54.1 q 160
2019-03-29 22:43:35 C 09 15 46.05 +05 50 52.3 q 160
2019-03-30 08:39:24 C 09 17 03.46 +05 44 30.3 V T08
2019-03-30 08:52:06 C 09 17 05.02 +05 44 21.9 V T08
2019-03-30 09:04:00 C 09 17 06.48 +05 44 14.1 V T08
2019-03-30 09:16:39 C 09 17 08.03 +05 44 05.6 V T08
2019-03-30 19:09:59 C 09 18 26.36 +05 37 23.1 t 240
2019-03-30 19:15:51 C 09 18 27.09 +05 37 19.3 t 240
2019-03-30 19:21:44 C 09 18 27.82 +05 37 15.4 t 240
2019-03-31 19:57:00 C 09 21 39.79 +05 21 08.5 q K73
2019-03-31 20:03:08 C 09 21 40.54 +05 21 05.0 q K73
2019-03-31 20:09:17 C 09 21 41.33 +05 21 01.1 q K73
2019-04-01 04:36:46 C 09 22 47.72 +05 15 31.0 V 703
2019-04-01 04:45:59 C 09 22 48.85 +05 15 25.0 V 703
2019-04-01 04:55:12 C 09 22 49.99 +05 15 18.9 V 703
2019-04-01 05:04:24 C 09 22 51.13 +05 15 12.8 V 703
2019-04-01 16:41:12 C 09 24 22.98 +05 07 40.5 q C97
2019-04-01 16:43:23 C 09 24 23.12 +05 07 39.3 q C97
2019-04-01 16:45:34 C 09 24 23.43 +05 07 37.8 q C97
2019-04-01 16:47:47 C 09 24 23.76 +05 07 36.3 q C97
2019-04-01 18:11:43 C 09 24 35.26 +05 06 33.1 q K73
2019-04-01 18:21:35 C 09 24 36.41 +05 06 26.6 q K73
2019-04-01 18:27:55 C 09 24 37.29 +05 06 23.0 q K73
2019-04-01 18:34:04 C 09 24 38.01 +05 06 18.9 q K73
2019-04-01 19:16:05 C 09 24 43.62 +05 05 51.3 q 006
2019-04-01 19:18:04 C 09 24 43.89 +05 05 49.9 q 006
2019-04-01 19:20:04 C 09 24 44.14 +05 05 48.4 q 006
2019-04-01 19:22:04 C 09 24 44.38 +05 05 47.3 q 006