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
2019-01-17 03:55:23 C 07 43 34.19 +21 38 09.4 V G96
2019-01-17 04:02:48 C 07 43 34.06 +21 38 07.3 V G96
2019-01-18 09:09:00 C 07 43 09.24 +21 28 58.9 V T08
2019-01-18 09:27:56 C 07 43 08.84 +21 28 52.9 V T08
2019-01-18 09:45:31 C 07 43 08.46 +21 28 47.4 V T08
2019-01-18 09:46:10 C 07 43 08.45 +21 28 47.2 V T08
2019-01-22 11:37:51 C 07 41 49.08 +20 55 13.9 V T08
2019-01-22 11:51:23 C 07 41 48.82 +20 55 08.8 V T08
2019-01-22 12:08:12 C 07 41 48.49 +20 55 02.3 V T08
2019-01-22 12:25:09 C 07 41 48.17 +20 54 55.6 V T08
2019-01-23 16:54:50 C 07 41 27.74 +20 44 23.3 q D29
2019-01-23 17:15:12 C 07 41 27.36 +20 44 15.5 q D29
2019-01-23 17:35:33 C 07 41 26.99 +20 44 07.6 q D29
2019-01-24 09:56:05 C 07 41 16.33 +20 38 05.8 V T05
2019-01-24 10:11:58 C 07 41 16.02 +20 37 59.7 V T05
2019-01-24 10:35:59 C 07 41 15.56 +20 37 50.5 V T05
2019-01-24 10:49:44 C 07 41 15.29 +20 37 45.1 V T05
2019-01-24 19:31:17 C 07 41 10.91 +20 34 12.6 q L05
2019-01-24 20:16:56 C 07 41 10.21 +20 33 56.2 q L05
2019-01-24 20:42:38 C 07 41 09.79 +20 33 46.7 q L05
2019-01-25 07:56:47 C 07 41 01.21 +20 29 33.7 V 703
2019-01-25 08:04:24 C 07 41 01.08 +20 29 30.6 V 703
2019-01-25 08:12:02 C 07 41 00.94 +20 29 27.6 V 703
2019-01-25 08:19:39 C 07 41 00.81 +20 29 24.6 V 703
2019-01-25 11:27:09 C 07 40 58.706 +20 28 17.21 U F51
2019-01-25 11:46:42 C 07 40 58.358 +20 28 09.23 U F51
2019-01-25 12:06:17 C 07 40 58.015 +20 28 01.21 U F51
2019-01-25 12:25:57 C 07 40 57.682 +20 27 53.08 U F51
2019-01-25 20:10:01 C 07 40 54.91 +20 24 40.8 q L05
2019-01-25 20:38:36 C 07 40 54.48 +20 24 29.9 q L05
2019-01-25 21:07:10 C 07 40 54.00 +20 24 19.1 q L05
2019-01-26 06:35:21 C 07 40 47.78 +20 20 41.2 V G96
2019-01-26 06:42:46 C 07 40 47.68 +20 20 38.9 V G96
2019-01-26 06:50:10 C 07 40 47.54 +20 20 36.2 V G96
2019-01-26 06:57:34 C 07 40 47.32 +20 20 31.8 V G96
2019-01-27 00:01:09 C 07 40 37.20 +20 13 38.7 q 160
2019-01-27 00:04:03 C 07 40 37.16 +20 13 37.5 q 160
2019-01-27 00:06:58 C 07 40 37.11 +20 13 36.2 q 160
2019-01-28 06:37:44 C 07 40 22.14 +20 01 14.5 V 703
2019-01-28 06:45:17 C 07 40 22.03 +20 01 11.3 V 703
2019-01-28 06:52:50 C 07 40 21.91 +20 01 08.1 V 703
2019-01-28 07:00:23 C 07 40 21.80 +20 01 05.0 V 703
2019-01-28 23:48:18 C 07 40 14.49 +19 54 06.7 14.4 q J43
2019-01-30 23:12:35 C 07 39 59.11 +19 33 44.8 14.4 q J43
2019-01-30 23:42:06 C 07 39 58.76 +19 33 32.1 14.2 q J43
2019-01-31 23:28:17 C 07 39 54.19 +19 23 01.5 14.3 q J43
2019-01-31 23:40:34 C 07 39 54.06 +19 22 56.1 14.4 q J43
2019-01-31 23:52:50 C 07 39 53.94 +19 22 50.6 14.3 q J43
2019-02-01 01:01:26 C 07 39 55.24 +19 22 15.5 q W46
2019-02-01 01:22:30 C 07 39 55.08 +19 22 06.5 q W46