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
2019-06-22 08:14:17 C 13 08 56.17 -11 48 59.8 V T08
2019-06-22 08:28:20 C 13 08 57.41 -11 49 04.9 V T08
2019-06-26 06:59:15 C 13 17 36.51 -12 26 19.8 V T08
2019-06-26 07:04:42 C 13 17 36.96 -12 26 22.5 V T08
2019-06-26 07:12:07 C 13 17 37.63 -12 26 25.4 V T08
2019-06-26 07:28:12 C 13 17 39.04 -12 26 31.3 V T08
2019-07-02 06:53:14 C 13 30 33.84 -13 21 32.3 V T05
2019-07-02 06:57:21 C 13 30 34.17 -13 21 34.1 V T05
2019-07-04 04:02:47 C 13 34 35.05 -13 38 30.8 V G96
2019-07-04 04:10:57 C 13 34 35.76 -13 38 33.8 V G96
2019-07-04 04:19:07 C 13 34 36.47 -13 38 37.0 V G96
2019-07-04 04:27:18 C 13 34 37.21 -13 38 39.6 V G96
2019-07-04 06:01:59 C 13 34 45.66 -13 39 15.7 V T08
2019-07-04 06:09:47 C 13 34 46.40 -13 39 17.4 V T08
2019-07-04 06:29:50 C 13 34 48.16 -13 39 24.2 V T08
2019-07-05 04:06:56 C 13 36 43.20 -13 47 29.1 U I41
2019-07-05 04:43:35 C 13 36 46.39 -13 47 42.5 U I41
2019-07-08 04:07:26 C 13 43 04.52 -14 14 01.0 U I41
2019-07-08 04:36:23 C 13 43 07.01 -14 14 11.4 U I41
2019-07-21 08:35:18 C 14 10 30.54 -16 04 58.4 q E89
2019-07-21 09:00:25 C 14 10 32.68 -16 05 06.7 q E89
2020-06-29 13:38:42 C 22 24 46.270 -08 29 14.02 U F52
2020-06-29 13:53:59 C 22 24 46.061 -08 29 14.53 U F52
2020-06-29 14:09:16 C 22 24 45.893 -08 29 14.79 U F52
2020-06-29 14:24:31 C 22 24 45.691 -08 29 15.28 U F52
2020-07-17 11:20:03 C 22 16 37.860 -09 01 07.54 U F51
2020-07-17 11:36:48 C 22 16 37.406 -09 01 09.30 U F51
2020-07-17 11:53:31 C 22 16 36.957 -09 01 11.35 U F51
2020-07-17 12:10:15 C 22 16 36.499 -09 01 13.31 U F51
2020-07-21 03:35:24 C 22 14 10.84 -09 12 04.0 c J04
2020-07-21 03:52:14 C 22 14 10.37 -09 12 05.9 c J04
2020-07-25 10:52:27 C 22 11 01.445 -09 26 31.87 U F51
2020-07-25 11:08:17 C 22 11 00.925 -09 26 34.39 U F51
2020-07-25 11:24:07 C 22 11 00.407 -09 26 36.67 U F51
2020-07-25 11:39:59 C 22 10 59.868 -09 26 39.01 U F51
2020-07-29 11:47:37 C 22 07 48.191 -09 41 32.31 U F52
2020-07-29 12:04:19 C 22 07 47.595 -09 41 34.92 U F52
2020-07-29 12:20:58 C 22 07 47.011 -09 41 37.86 U F52
2020-07-29 12:37:35 C 22 07 46.427 -09 41 40.31 U F52
2020-08-12 09:12:14 C 21 55 22.024 -10 40 40.51 U F51
2020-08-12 09:27:09 C 21 55 21.425 -10 40 43.35 U F51
2020-08-12 09:42:02 C 21 55 20.829 -10 40 46.13 U F51
2020-08-12 09:56:54 C 21 55 20.229 -10 40 49.06 U F51
2020-08-17 08:29:11 C 21 50 38.611 -11 03 19.88 U F51
2020-08-17 08:47:15 C 21 50 37.867 -11 03 23.30 U F51
2020-08-17 09:05:20 C 21 50 37.138 -11 03 26.88 U F51
2020-08-17 09:23:30 C 21 50 36.400 -11 03 30.29 U F51
2020-08-18 16:28:41 C 21 49 22.31 -11 09 27.3 q D29
2020-08-18 16:29:58 C 21 49 22.19 -11 09 26.6 q D29
2020-08-18 16:51:36 C 21 49 21.31 -11 09 31.8 q D29