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
2018-09-08 11:35:10 C 05 22 09.00 +25 53 17.3 V G96
2018-10-10 10:25:47 C 06 19 12.69 +26 24 49.1 V G96
2018-10-10 10:33:17 C 06 19 13.17 +26 24 49.3 V G96
2018-10-10 10:40:45 C 06 19 13.70 +26 24 49.4 V G96
2018-11-05 11:04:59 C 07 01 05.09 +25 59 34.0 V G96
2018-11-05 11:12:34 C 07 01 05.53 +25 59 33.4 V G96
2018-11-05 11:20:10 C 07 01 05.97 +25 59 32.9 V G96
2018-11-05 11:27:44 C 07 01 06.42 +25 59 32.4 V G96
2018-11-08 08:32:47 C 07 05 15.64 +25 54 27.8 V 703
2018-11-08 08:40:56 C 07 05 16.09 +25 54 27.3 V 703
2018-11-08 08:49:06 C 07 05 16.54 +25 54 26.9 V 703
2018-11-08 09:22:15 C 07 05 18.45 +25 54 24.2 V G96
2018-11-08 09:22:57 C 07 05 18.50 +25 54 24.2 V G96
2018-11-08 09:29:38 C 07 05 18.88 +25 54 23.8 V G96
2018-11-08 09:30:19 C 07 05 18.91 +25 54 23.7 V G96
2018-11-08 09:36:59 C 07 05 19.29 +25 54 23.3 V G96
2018-11-08 09:37:41 C 07 05 19.33 +25 54 23.1 V G96
2018-11-08 09:52:05 C 07 05 20.16 +25 54 22.1 V G96
2018-11-08 09:52:47 C 07 05 20.19 +25 54 22.1 V G96
2018-11-13 15:03:33 C 07 12 30.09 +25 44 15.5 U T05
2018-11-13 15:04:45 C 07 12 30.12 +25 44 15.3 U T05
2018-11-13 15:07:43 C 07 12 30.27 +25 44 15.5 U T05
2018-11-13 15:26:01 C 07 12 31.22 +25 44 13.7 U T05
2018-11-13 15:43:03 C 07 12 32.17 +25 44 11.0 U T05
2018-11-14 08:53:13 C 07 13 29.53 +25 42 39.8 V 703
2018-11-14 09:09:12 C 07 13 30.38 +25 42 39.9 V 703
2018-11-14 09:17:12 C 07 13 30.75 +25 42 38.1 V 703
2018-11-15 14:36:01 C 07 15 06.12 +25 40 06.2 U T08
2018-11-15 14:40:23 C 07 15 06.36 +25 40 06.0 U T08
2018-11-15 14:57:41 C 07 15 07.23 +25 40 03.8 U T08
2018-11-15 15:18:00 C 07 15 08.23 +25 40 02.7 U T08
2018-11-17 08:08:17 C 07 17 19.37 +25 36 17.7 V 703
2018-11-17 08:22:14 C 07 17 20.09 +25 36 16.5 V 703
2018-11-17 08:30:19 C 07 17 20.49 +25 36 16.2 V 703
2018-11-17 08:38:23 C 07 17 20.90 +25 36 15.6 V 703
2018-11-19 02:22:26 C 07 19 30.46 +25 32 19.8 q 160
2018-11-19 02:26:29 C 07 19 30.64 +25 32 19.4 q 160
2018-11-19 02:30:32 C 07 19 30.85 +25 32 19.3 q 160
2018-11-19 08:22:50 C 07 19 49.24 +25 31 46.7 U I41
2018-11-19 08:37:05 C 07 19 49.94 +25 31 45.5 U I41
2018-11-19 10:26:31 C 07 19 55.23 +25 31 35.8 U I41
2018-11-19 11:28:07 C 07 19 58.19 +25 31 29.9 U I41
2018-11-19 14:16:28 C 07 20 06.72 +25 31 16.5 U T08
2018-11-19 14:34:07 C 07 20 07.50 +25 31 14.5 U T08
2018-11-19 14:52:17 C 07 20 08.36 +25 31 13.4 U T08
2018-11-19 15:13:44 C 07 20 09.41 +25 31 11.1 U T08
2018-11-21 14:13:38 C 07 22 30.18 +25 26 37.0 U T05
2018-11-21 14:28:30 C 07 22 30.87 +25 26 35.4 U T05
2018-11-21 14:44:26 C 07 22 31.59 +25 26 33.8 U T05
2018-11-21 14:58:54 C 07 22 32.26 +25 26 32.5 U T05