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
2019-05-08 06:12:59 C 11 17 06.72 -03 36 38.7 V 703
2019-05-08 06:21:11 C 11 17 07.68 -03 36 43.0 V 703
2019-05-08 06:29:21 C 11 17 08.63 -03 36 47.3 V 703
2019-05-09 07:10:59 C 11 20 03.27 -03 49 39.2 V T08
2019-05-09 07:22:23 C 11 20 04.56 -03 49 45.0 V T08
2019-05-09 07:46:47 C 11 20 07.30 -03 49 57.8 V T08
2019-05-11 07:52:12 C 11 25 43.20 -04 14 51.3 V T05
2019-05-11 07:56:16 C 11 25 43.64 -04 14 53.3 V T05
2019-05-11 08:05:00 C 11 25 44.63 -04 14 57.8 V T05
2019-05-11 08:20:24 C 11 25 46.33 -04 15 05.7 V T05
2019-05-17 07:53:51 C 11 42 03.68 -05 27 20.4 V T08
2019-05-17 07:58:32 C 11 42 04.17 -05 27 22.5 V T08
2019-05-17 08:05:51 C 11 42 04.97 -05 27 26.1 V T08
2019-05-17 08:25:16 C 11 42 07.06 -05 27 35.7 V T08
2019-05-20 08:29:35 C 11 50 03.31 -06 02 44.4 V T08
2019-05-20 08:34:15 C 11 50 03.82 -06 02 46.5 V T08
2019-05-20 08:42:24 C 11 50 04.65 -06 02 50.6 V T08
2019-05-20 09:01:46 C 11 50 06.73 -06 02 59.6 V T08
2019-05-23 08:23:40 C 11 57 49.32 -06 37 05.1 V T05
2019-05-23 08:27:46 C 11 57 49.75 -06 37 06.9 V T05
2019-05-23 08:38:32 C 11 57 50.87 -06 37 11.9 V T05
2019-05-23 08:54:59 C 11 57 52.57 -06 37 19.8 V T05
2019-05-25 06:27:47 C 12 02 43.675 -06 58 43.57 U F52
2019-05-25 07:01:19 C 12 02 47.099 -06 58 59.22 U F52
2019-05-25 07:07:10 C 12 02 47.68 -06 59 01.7 V T08
2019-05-25 07:11:11 C 12 02 48.09 -06 59 03.5 V T08
2019-05-25 07:18:07 C 12 02 48.78 -06 59 06.5 V T08
2019-05-25 07:18:26 C 12 02 48.838 -06 59 07.12 U F52
2019-05-25 07:32:11 C 12 02 50.23 -06 59 13.1 V T08
2019-05-27 07:23:47 C 12 07 51.92 -07 21 24.7 V T05
2019-05-27 07:35:21 C 12 07 53.09 -07 21 30.0 V T05
2019-05-27 07:50:05 C 12 07 54.58 -07 21 36.7 V T05
2019-05-29 07:41:54 C 12 12 52.68 -07 43 31.0 V T08
2019-05-29 07:45:57 C 12 12 53.08 -07 43 32.8 V T08
2019-05-29 07:54:00 C 12 12 53.89 -07 43 36.6 V T08
2019-05-29 08:09:23 C 12 12 55.43 -07 43 43.3 V T08
2019-05-31 07:26:39 C 12 17 46.71 -08 05 06.4 V T05
2019-05-31 07:36:39 C 12 17 47.71 -08 05 10.9 V T05
2019-05-31 07:41:24 C 12 17 48.16 -08 05 13.1 V T05
2019-05-31 07:45:32 C 12 17 48.60 -08 05 14.8 V T05
2019-05-31 07:51:41 C 12 17 49.19 -08 05 17.5 V T05
2019-05-31 07:53:02 C 12 17 49.32 -08 05 17.6 V T05
2019-06-01 04:32:20 C 12 19 55.68 -08 14 36.2 U I41
2019-06-01 05:33:35 C 12 20 01.73 -08 15 03.4 U I41
2019-06-02 05:22:13 C 12 22 26.33 -08 25 40.3 V 703
2019-06-02 05:30:11 C 12 22 27.11 -08 25 43.1 V 703
2019-06-02 05:38:09 C 12 22 27.93 -08 25 46.6 V 703
2019-06-02 05:46:07 C 12 22 28.70 -08 25 50.5 V 703
2019-06-02 07:23:20 C 12 22 38.71 -08 26 31.5 V T08
2019-06-02 07:27:19 C 12 22 39.10 -08 26 33.1 V T08