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
2001-01-29 10:08:43 C 13 03 12.58 -11 04 29.4 17.2 c 704
2001-02-01 10:39:20 C 13 13 04.70 -12 29 04.9 670
2001-02-01 13:38:28 C 13 13 28.04 -12 32 30.6 670
2001-02-18 17:02:28 C 14 05 13.66 -19 34 34.2 428
2001-02-18 17:07:02 C 14 05 14.16 -19 34 38.3 428
2001-02-18 17:11:31 C 14 05 14.64 -19 34 42.2 428
2001-02-19 07:37:35 C 14 06 52.58 -19 47 17.9 808
2001-02-19 08:27:44 C 14 06 57.92 -19 48 02.4 808
2001-02-26 07:52:16 C 14 24 36.35 -22 02 12.5 808
2001-02-26 08:25:47 C 14 24 39.47 -22 02 36.8 808
2001-03-03 10:35:04 C 14 35 53.34 -23 26 08.0 16.6 c 704
2001-03-03 11:18:17 C 14 35 56.80 -23 26 35.8 16.1 c 704
2001-03-03 11:40:45 C 14 35 58.61 -23 26 48.6 16.0 c 704
2001-03-03 12:02:51 C 14 36 00.32 -23 27 02.9 16.3 c 704
2001-03-15 05:50:21 C 14 55 45.58 -25 51 02.9 844
2001-03-15 06:18:07 C 14 55 46.92 -25 51 13.7 844
2001-03-15 06:28:55 C 14 55 47.42 -25 51 18.5 844
2001-03-15 06:32:32 C 14 55 47.62 -25 51 20.2 844
2001-03-20 10:12:04 C 15 01 26.32 -26 34 37.6 16.2 c 704
2001-03-20 10:30:50 C 15 01 26.94 -26 34 43.0 16.0 c 704
2001-03-20 10:48:50 C 15 01 27.53 -26 34 48.8 16.1 c 704
2001-03-20 11:06:47 C 15 01 28.09 -26 34 53.8 16.0 c 704
2001-03-20 11:24:44 C 15 01 28.67 -26 34 58.9 16.3 c 704
2001-03-25 10:44:47 C 15 05 04.49 -27 04 31.4 16.1 c 704
2001-03-25 11:03:12 C 15 05 04.68 -27 04 35.1 16.9 c 704
2001-03-25 11:21:22 C 15 05 05.02 -27 04 38.6 14.9 c 704
2001-03-25 11:39:38 C 15 05 05.43 -27 04 43.2 15.1 c 704
2001-04-16 09:50:09 C 15 01 59.57 -27 03 35.3 16.5 c 704
2001-04-16 10:09:12 C 15 01 58.91 -27 03 31.4 16.7 c 704
2001-04-16 10:29:17 C 15 01 58.21 -27 03 26.8 16.8 c 704
2001-04-16 10:49:54 C 15 01 57.53 -27 03 22.7 16.9 c 704
2001-04-19 05:33:35 C 14 59 58.63 -26 49 10.1 808
2001-04-19 06:20:34 C 14 59 56.88 -26 48 59.2 808
2001-04-19 13:40:43 C 14 59 44.21 -26 47 16.7 322
2001-04-19 14:14:46 C 14 59 43.01 -26 47 09.8 322
2001-04-19 14:22:09 C 14 59 42.75 -26 47 08.3 322
2001-04-21 08:19:47 C 14 58 19.85 -26 37 17.1 16.0 c 704
2001-04-21 08:41:10 C 14 58 18.99 -26 37 11.7 16.3 c 704
2001-04-21 09:00:49 C 14 58 18.25 -26 37 06.2 16.2 c 704
2001-04-21 09:20:21 C 14 58 17.52 -26 37 01.2 16.5 c 704
2001-04-21 09:41:06 C 14 58 16.73 -26 36 55.5 16.8 c 704
2001-04-26 06:52:33 C 14 54 14.91 -26 03 54.5 649
2001-04-26 07:01:54 C 14 54 14.54 -26 03 51.5 649
2001-04-26 07:11:51 C 14 54 14.11 -26 03 48.7 649
2001-04-26 07:27:52 C 14 54 13.48 -26 03 43.9 649
2001-04-26 12:25:17 C 14 54 04.30 -26 01 49.4 322
2001-04-26 12:34:38 C 14 54 03.98 -26 01 46.6 322
2001-04-26 12:46:52 C 14 54 03.46 -26 01 43.0 322
2001-04-26 12:56:53 C 14 54 03.09 -26 01 40.4 322
2001-04-26 13:04:42 C 14 54 02.82 -26 01 38.2 322