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
2018-12-18 17:47:17 C 07 44 44.66 +24 08 39.9 o C94
2018-12-18 17:49:11 C 07 44 44.68 +24 08 40.4 o C94
2018-12-18 19:09:28 C 07 44 45.78 +24 08 28.8 o C94
2018-12-18 19:11:36 C 07 44 45.80 +24 08 28.6 o C94
2018-12-27 11:22:55 C 07 47 00.60 +23 35 26.2 V T05
2018-12-27 11:38:40 C 07 47 00.59 +23 35 23.4 V T05
2018-12-27 11:39:20 C 07 47 00.59 +23 35 23.3 V T05
2018-12-27 11:47:28 C 07 47 00.58 +23 35 21.8 V T05
2018-12-27 11:57:39 C 07 47 00.57 +23 35 20.1 V T05
2018-12-27 11:58:18 C 07 47 00.56 +23 35 20.0 V T05
2018-12-27 11:58:58 C 07 47 00.57 +23 35 19.9 V T05
2018-12-27 12:09:21 C 07 47 00.55 +23 35 18.0 V T05
2018-12-30 23:02:59 C 07 47 12.31 +23 19 59.1 15.4 U K83
2018-12-30 23:39:31 C 07 47 12.13 +23 19 52.3 15.5 U K83
2018-12-31 11:39:03 C 07 47 11.58 +23 17 41.6 V T05
2018-12-31 11:46:54 C 07 47 11.52 +23 17 40.0 V T05
2018-12-31 11:55:17 C 07 47 11.46 +23 17 38.4 V T05
2018-12-31 12:13:17 C 07 47 11.34 +23 17 34.9 V T05
2019-01-03 01:00:29 C 07 47 02.49 +23 05 14.3 q 160
2019-01-03 01:03:24 C 07 47 02.45 +23 05 13.4 q 160
2019-01-03 01:06:19 C 07 47 02.43 +23 05 12.6 q 160
2019-01-04 12:01:27 C 07 46 52.17 +22 57 56.2 V T05
2019-01-04 12:12:28 C 07 46 52.04 +22 57 53.7 V T05
2019-01-04 12:13:08 C 07 46 52.03 +22 57 53.6 V T05
2019-01-04 12:23:35 C 07 46 51.91 +22 57 51.2 V T05
2019-01-08 08:00:04 C 07 46 09.71 +22 36 47.6 V G96
2019-01-08 08:07:30 C 07 46 09.59 +22 36 45.8 V G96
2019-01-08 08:14:58 C 07 46 09.48 +22 36 44.0 V G96
2019-01-08 08:22:24 C 07 46 09.36 +22 36 42.2 V G96
2019-01-08 11:24:56 C 07 46 07.58 +22 36 02.4 V T05
2019-01-08 11:41:16 C 07 46 07.31 +22 35 58.4 V T05
2019-01-08 12:00:24 C 07 46 07.00 +22 35 53.6 V T05
2019-01-08 12:10:53 C 07 46 06.83 +22 35 51.0 V T05
2019-01-12 11:00:49 C 07 45 03.28 +22 11 22.7 V T05
2019-01-12 11:14:33 C 07 45 03.00 +22 11 18.9 V T05
2019-01-12 11:23:40 C 07 45 02.83 +22 11 16.3 V T05
2019-01-12 11:41:46 C 07 45 02.48 +22 11 11.3 V T05
2019-01-14 10:36:45 C 07 44 26.41 +21 57 59.1 V T08
2019-01-14 10:54:54 C 07 44 26.04 +21 57 53.8 V T08
2019-01-14 11:14:40 C 07 44 25.63 +21 57 48.0 V T08
2019-01-14 11:27:21 C 07 44 25.38 +21 57 44.2 V T08
2019-01-15 00:34:38 C 07 44 14.83 +21 53 44.1 q 160
2019-01-15 00:37:35 C 07 44 14.77 +21 53 42.9 q 160
2019-01-15 00:40:06 C 07 44 14.71 +21 53 42.5 q 160
2019-01-16 10:11:02 C 07 43 47.80 +21 43 47.4 V T05
2019-01-16 10:19:50 C 07 43 47.62 +21 43 44.7 V T05
2019-01-16 10:31:18 C 07 43 47.37 +21 43 41.2 V T05
2019-01-16 10:42:49 C 07 43 47.13 +21 43 37.6 V T05
2019-01-17 03:40:32 C 07 43 34.46 +21 38 13.6 V G96
2019-01-17 03:47:57 C 07 43 34.33 +21 38 11.4 V G96