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
2015-02-14 02:44:22 C 01 52 37.60 +13 56 00.0 R G45
2015-02-14 02:50:20 C 01 52 37.94 +13 56 02.1 R G45
2015-02-14 03:02:33 C 01 52 38.73 +13 56 05.2 R G45
2015-02-14 03:08:31 C 01 52 39.04 +13 56 07.5 R G45
2016-07-03 08:39:23 C 20 53 30.56 -17 13 57.6 q G96
2016-07-03 08:47:49 C 20 53 30.22 -17 13 58.4 q G96
2016-07-03 08:56:11 C 20 53 29.88 -17 13 59.6 q G96
2016-07-03 09:04:39 C 20 53 29.61 -17 14 00.2 q G96
2016-07-12 07:29:40 C 20 44 41.23 -17 42 12.7 q G96
2016-07-12 07:39:59 C 20 44 40.86 -17 42 14.0 q G96
2016-07-12 07:50:20 C 20 44 40.36 -17 42 16.2 q G96
2016-07-12 08:00:39 C 20 44 39.91 -17 42 17.5 q G96
2016-07-12 10:13:43 C 20 44 33.95 -17 42 35.6 q G96
2016-07-12 10:25:33 C 20 44 33.38 -17 42 37.4 q G96
2016-07-12 10:37:24 C 20 44 32.87 -17 42 39.0 q G96
2016-07-12 10:49:13 C 20 44 32.35 -17 42 40.7 q G96
2016-07-16 08:07:03 C 20 40 22.54 -17 55 44.4 q G96
2016-07-16 08:13:38 C 20 40 22.31 -17 55 45.9 q G96
2016-07-16 08:20:10 C 20 40 21.97 -17 55 46.2 q G96
2016-07-16 08:26:41 C 20 40 21.68 -17 55 47.5 q G96
2016-08-27 07:31:43 C 19 59 37.258 -19 47 34.28 L F51
2016-08-27 07:49:37 C 19 59 36.784 -19 47 35.25 L F51
2016-08-27 08:07:30 C 19 59 36.301 -19 47 36.40 L F51
2016-08-27 08:25:23 C 19 59 35.831 -19 47 37.32 L F51
2017-08-16 10:15:46 C 23 55 05.236 +02 42 02.84 L F51
2017-08-16 10:32:13 C 23 55 04.822 +02 42 01.02 L F51
2017-08-16 10:48:41 C 23 55 04.386 +02 41 58.90 L F51
2017-08-16 11:05:09 C 23 55 03.976 +02 41 56.98 L F51
2017-09-25 09:07:24 C 23 22 12.959 -00 28 08.85 L F51
2017-09-25 09:22:40 C 23 22 12.384 -00 28 12.46 L F51
2017-09-25 09:37:57 C 23 22 11.804 -00 28 16.06 L F51
2017-09-25 09:53:14 C 23 22 11.232 -00 28 19.58 L F51
2017-09-28 06:13:22 C 23 19 42.29 -00 44 15.7 q G96
2017-09-28 06:21:36 C 23 19 42.01 -00 44 17.8 q G96
2017-09-28 06:38:45 C 23 19 41.37 -00 44 21.8 q G96
2017-09-28 06:54:44 C 23 19 40.76 -00 44 24.9 q G96
2017-09-28 10:11:10 C 23 19 33.727 -00 45 10.13 L F51
2017-09-28 10:28:06 C 23 19 33.091 -00 45 14.05 L F51
2017-09-28 10:45:02 C 23 19 32.472 -00 45 17.92 L F51
2017-09-28 11:01:58 C 23 19 31.854 -00 45 21.88 L F51
2017-10-17 04:40:26 C 23 05 40.19 -02 18 50.5 U G96
2017-10-17 04:48:06 C 23 05 39.99 -02 18 52.2 U G96
2017-10-17 04:55:38 C 23 05 39.78 -02 18 53.6 U G96
2017-10-17 05:03:34 C 23 05 39.61 -02 18 55.3 U G96
2017-10-19 08:15:52 C 23 04 26.578 -02 27 39.25 L F51
2017-10-19 08:31:01 C 23 04 26.187 -02 27 41.52 L F51
2017-10-19 08:46:10 C 23 04 25.862 -02 27 44.75 L F51
2018-09-08 11:08:15 C 05 22 06.99 +25 53 14.8 V G96
2018-09-08 11:17:13 C 05 22 07.66 +25 53 15.8 V G96
2018-09-08 11:26:12 C 05 22 08.33 +25 53 16.7 V G96