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
2019-06-02 07:35:28 C 12 22 39.89 -08 26 36.8 V T08
2019-06-02 07:49:30 C 12 22 41.28 -08 26 43.2 V T08
2019-06-03 04:25:45 C 12 24 45.99 -08 35 53.6 U I41
2019-06-03 05:36:49 C 12 24 52.94 -08 36 24.8 U I41
2019-06-06 04:02:55 C 12 31 54.64 -09 07 17.8 U I41
2019-06-06 05:04:31 C 12 32 00.57 -09 07 44.3 U I41
2019-06-08 07:21:13 C 12 36 57.63 -09 29 26.8 V T05
2019-06-08 07:25:53 C 12 36 58.06 -09 29 28.9 V T05
2019-06-08 07:33:17 C 12 36 58.78 -09 29 32.0 V T05
2019-06-08 07:50:54 C 12 37 00.45 -09 29 39.6 V T05
2019-06-09 04:39:57 C 12 39 02.71 -09 38 37.7 U I41
2019-06-09 04:52:56 C 12 39 03.83 -09 38 42.5 V 703
2019-06-09 05:00:40 C 12 39 04.61 -09 38 45.1 V 703
2019-06-09 05:08:23 C 12 39 05.32 -09 38 49.1 V 703
2019-06-09 05:16:07 C 12 39 06.03 -09 38 52.7 V 703
2019-06-09 05:41:28 C 12 39 08.56 -09 39 03.7 U I41
2019-06-10 06:30:18 C 12 41 33.65 -09 49 37.6 V T08
2019-06-10 06:34:17 C 12 41 34.01 -09 49 39.0 V T08
2019-06-10 06:41:42 C 12 41 34.73 -09 49 42.0 V T08
2019-06-10 06:59:05 C 12 41 36.36 -09 49 49.1 V T08
2019-06-15 07:40:37 C 12 53 11.01 -10 40 30.9 V T05
2019-06-15 07:44:34 C 12 53 11.41 -10 40 32.5 V T05
2019-06-15 07:51:55 C 12 53 12.07 -10 40 35.7 V T05
2019-06-15 08:08:06 C 12 53 13.53 -10 40 41.4 V T05
2019-06-16 07:48:52 C 12 55 28.05 -10 50 28.2 V T05
2019-06-16 07:53:32 C 12 55 28.48 -10 50 30.8 V T05
2019-06-16 08:01:04 C 12 55 29.18 -10 50 34.3 V T05
2019-06-16 08:16:30 C 12 55 30.61 -10 50 39.9 V T05
2019-06-18 02:24:37 S 12 59 28.68 -11 07 50.2 L C51
2019-06-18 02:24:47 S 12 59 28.72 -11 07 50.4 L C51
2019-06-18 07:11:57 C 12 59 55.49 -11 09 53.5 V T08
2019-06-18 07:16:01 C 12 59 55.88 -11 09 55.3 V T08
2019-06-18 07:24:03 C 12 59 56.61 -11 09 58.3 V T08
2019-06-18 07:38:44 C 12 59 57.99 -11 10 04.5 V T08
2019-06-18 14:58:14 S 13 00 39.20 -11 12 56.1 L C51
2019-06-18 18:06:33 S 13 00 57.01 -11 14 14.1 L C51
2019-06-18 18:06:45 S 13 00 56.84 -11 14 14.9 L C51
2019-06-18 21:15:04 S 13 01 14.239 -11 15 31.18 L C51
2019-06-19 00:23:23 S 13 01 32.090 -11 16 47.57 L C51
2019-06-19 17:39:35 S 13 03 08.63 -11 23 46.5 L C51
2019-06-19 20:47:54 S 13 03 26.210 -11 25 03.50 L C51
2019-06-20 06:13:13 S 13 04 18.83 -11 28 52.4 L C51
2019-06-20 07:09:09 C 13 04 23.85 -11 29 19.8 V T05
2019-06-20 07:13:23 C 13 04 24.22 -11 29 21.3 V T05
2019-06-20 07:21:25 C 13 04 24.97 -11 29 24.5 V T05
2019-06-20 07:35:36 C 13 04 26.23 -11 29 30.3 V T05
2019-06-20 09:21:32 S 13 04 36.27 -11 30 08.2 L C51
2019-06-20 12:30:02 S 13 04 53.73 -11 31 23.2 L C51
2019-06-22 08:01:34 C 13 08 55.01 -11 48 54.5 V T08
2019-06-22 08:06:12 C 13 08 55.43 -11 48 56.2 V T08