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
2008-02-27 03:25:36 C 03 54 15.71 +21 07 55.7 18.9 c 704
2008-02-27 03:33:08 C 03 54 16.41 +21 07 57.0 r 703
2008-02-27 03:42:30 C 03 54 17.28 +21 07 57.7 19.2 c 704
2008-02-28 03:44:16 C 03 56 30.98 +21 11 42.4 r G96
2008-02-28 03:51:23 C 03 56 31.63 +21 11 43.4 r G96
2008-02-28 03:58:31 C 03 56 32.28 +21 11 44.5 r G96
2008-02-28 04:05:41 C 03 56 32.96 +21 11 45.7 r G96
2008-02-29 03:14:44 C 03 58 43.88 +21 15 22.3 o 291
2008-02-29 03:31:45 C 03 58 45.45 +21 15 24.8 o 291
2008-02-29 03:33:21 C 03 58 45.62 +21 15 24.6 r G96
2008-02-29 03:42:17 C 03 58 46.46 +21 15 26.4 o 291
2008-02-29 03:43:11 C 03 58 46.52 +21 15 26.3 r G96
2008-02-29 03:53:03 C 03 58 47.46 +21 15 27.6 r G96
2008-02-29 04:02:49 C 03 58 48.36 +21 15 30.4 r G96
2008-02-29 04:22:25 C 03 58 50.19 +21 15 32.0 r G96
2008-02-29 04:28:16 C 03 58 50.73 +21 15 33.1 r G96
2008-02-29 04:34:05 C 03 58 51.31 +21 15 33.7 r G96
2008-02-29 04:40:04 C 03 58 51.85 +21 15 34.9 r G96
2008-03-01 04:10:25 C 04 01 06.88 +21 19 13.6 r G96
2008-03-01 04:20:09 C 04 01 07.78 +21 19 14.9 r G96
2008-03-01 04:29:52 C 04 01 08.76 +21 19 16.2 r G96
2008-03-01 04:39:32 C 04 01 09.66 +21 19 17.8 r G96
2008-03-02 04:18:05 C 04 03 27.46 +21 22 57.1 r G96
2008-03-02 04:22:51 C 04 03 27.93 +21 22 57.9 r G96
2008-03-02 04:27:46 C 04 03 28.40 +21 22 58.7 r G96
2008-03-02 04:32:34 C 04 03 28.87 +21 22 59.2 r G96
2008-03-05 02:34:02 C 04 10 29.08 +21 33 40.5 18.6 c 704
2008-03-05 02:50:15 C 04 10 30.69 +21 33 42.8 18.7 c 704
2008-03-05 03:06:21 C 04 10 32.30 +21 33 44.4 18.9 c 704
2008-03-05 03:23:19 C 04 10 34.01 +21 33 47.4 18.7 c 704
2008-03-05 03:39:38 C 04 10 35.63 +21 33 49.2 18.5 c 704
2008-03-28 02:53:58 C 05 15 22.35 +22 31 24.3 18.8 c 704
2008-03-28 03:11:33 C 05 15 24.61 +22 31 24.6 19.1 c 704
2008-03-28 03:28:58 C 05 15 26.88 +22 31 25.3 19.2 c 704
2008-03-28 03:46:09 C 05 15 29.12 +22 31 25.4 18.9 c 704
2008-03-28 04:03:28 C 05 15 31.39 +22 31 25.0 19.0 c 704
2008-04-06 02:59:10 C 05 44 56.79 +22 29 41.4 18.8 c 704
2008-04-06 03:15:31 C 05 44 59.10 +22 29 40.1 19.0 c 704
2008-04-06 03:32:09 C 05 45 01.44 +22 29 38.7 19.0 c 704
2008-04-27 03:26:09 C 07 00 54.32 +20 58 07.2 r G96
2008-04-27 03:33:49 C 07 00 55.54 +20 58 04.6 r G96
2008-04-27 03:41:30 C 07 00 56.73 +20 58 02.1 r G96
2008-04-27 03:49:14 C 07 00 57.92 +20 57 59.6 r G96
2008-04-28 03:19:38 C 07 04 40.63 +20 50 14.2 18.9 c 704
2008-04-28 03:34:54 C 07 04 42.94 +20 50 09.6 19.3 c 704
2008-04-28 03:50:10 C 07 04 45.36 +20 50 04.4 18.9 c 704
2008-04-28 04:05:32 C 07 04 47.83 +20 50 01.8 19.2 c 704
2008-04-28 04:21:01 C 07 04 50.27 +20 49 53.7 19.1 c 704
2008-06-13 03:49:11 C 10 00 15.40 +09 15 20.4 r 703
2008-06-13 03:55:50 C 10 00 16.38 +09 15 14.3 r 703