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
2019-02-01 01:46:44 C 07 39 54.91 +19 21 56.8 q W46
2019-02-03 01:46:18 C 07 39 50.85 +18 59 56.5 o L52
2019-02-03 01:53:12 C 07 39 50.87 +18 59 53.2 o L52
2019-02-03 09:35:31 C 07 39 52.87 +18 56 36.3 V T08
2019-02-03 09:56:49 C 07 39 52.73 +18 56 26.4 V T08
2019-02-03 09:57:29 C 07 39 52.73 +18 56 26.0 V T08
2019-02-03 10:11:54 C 07 39 52.63 +18 56 19.1 V T08
2019-02-03 18:26:28 C 07 39 55.55 +18 52 14.8 q K73
2019-02-03 18:33:04 C 07 39 55.52 +18 52 12.8 q K73
2019-02-03 18:39:42 C 07 39 55.36 +18 52 09.0 q K73
2019-02-03 22:57:36 C 07 39 55.54 +18 50 16.3 o Z22
2019-02-03 23:03:21 C 07 39 55.50 +18 50 13.4 o Z22
2019-02-04 06:13:01 C 07 39 57.872 +18 46 52.95 U F51
2019-02-04 06:31:40 C 07 39 57.879 +18 46 44.73 U F51
2019-02-04 06:50:17 C 07 39 57.836 +18 46 36.67 U F51
2019-02-04 07:08:48 C 07 39 57.751 +18 46 27.21 U F51
2019-02-05 00:19:52 C 07 40 00.51 +18 38 04.5 q 160
2019-02-05 00:22:50 C 07 40 00.49 +18 38 03.3 q 160
2019-02-05 00:25:49 C 07 40 00.53 +18 38 01.5 q 160
2019-02-05 10:13:15 C 07 40 04.22 +18 33 32.1 V T05
2019-02-05 10:19:20 C 07 40 04.21 +18 33 29.0 V T05
2019-02-05 10:33:36 C 07 40 04.18 +18 33 22.0 V T05
2019-02-05 10:51:05 C 07 40 04.15 +18 33 13.2 V T05
2019-02-05 11:43:27 C 07 40 05.02 +18 33 14.9 q E89
2019-02-05 11:52:11 C 07 40 05.02 +18 33 10.6 q E89
2019-02-05 12:05:43 C 07 40 05.00 +18 33 03.9 q E89
2019-02-05 23:22:37 C 07 40 09.59 +18 26 57.9 q 160
2019-02-05 23:25:30 C 07 40 09.57 +18 26 56.8 q 160
2019-02-05 23:28:31 C 07 40 09.56 +18 26 55.0 q 160
2019-02-06 19:11:52 C 07 40 20.83 +18 17 13.1 V G34
2019-02-06 19:30:28 C 07 40 20.92 +18 17 02.7 V G34
2019-02-06 22:21:15 C 07 40 22.19 +18 15 49.5 14.4 q J43
2019-02-06 22:33:35 C 07 40 22.21 +18 15 43.5 14.4 q J43
2019-02-06 22:45:55 C 07 40 22.22 +18 15 37.5 14.4 q J43
2019-02-06 22:46:02 C 07 40 21.70 +18 15 31.0 q 160
2019-02-06 22:48:58 C 07 40 21.72 +18 15 29.4 q 160
2019-02-06 22:51:54 C 07 40 21.72 +18 15 28.2 q 160
2019-02-06 22:58:15 C 07 40 22.24 +18 15 31.4 14.5 q J43
2019-02-06 23:17:06 C 07 40 22.11 +18 15 17.5 d Z35
2019-02-06 23:36:10 C 07 40 22.21 +18 15 08.3 d Z35
2019-02-06 23:55:19 C 07 40 22.24 +18 14 59.0 d Z35
2019-02-07 19:51:00 C 07 40 36.22 +18 05 03.8 q K73
2019-02-07 19:58:35 C 07 40 36.26 +18 05 01.4 q K73
2019-02-07 20:08:26 C 07 40 36.74 +18 04 54.2 d Z35
2019-02-07 20:11:38 C 07 40 36.24 +18 04 54.9 q K73
2019-02-07 20:27:54 C 07 40 36.92 +18 04 45.1 d Z35
2019-02-07 20:47:19 C 07 40 37.03 +18 04 36.1 d Z35
2019-02-07 22:02:10 C 07 40 37.59 +18 04 03.2 14.3 q J43
2019-02-07 22:04:36 C 07 40 37.61 +18 04 01.9 14.4 q J43
2019-02-07 22:14:32 C 07 40 37.65 +18 03 57.0 14.3 q J43