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
2019-02-07 22:16:58 C 07 40 37.66 +18 03 55.8 14.3 q J43
2019-02-07 22:27:02 C 07 40 37.71 +18 03 51.0 14.4 q J43
2019-02-07 22:29:27 C 07 40 37.71 +18 03 49.8 14.5 q J43
2019-02-07 22:39:23 C 07 40 37.75 +18 03 44.9 14.3 q J43
2019-02-07 22:41:48 C 07 40 37.76 +18 03 43.6 14.5 q J43
2019-02-08 05:47:49 C 07 40 42.91 +18 00 09.1 V 703
2019-02-08 05:55:26 C 07 40 42.95 +18 00 05.3 V 703
2019-02-08 06:03:02 C 07 40 42.99 +18 00 01.5 V 703
2019-02-08 06:10:39 C 07 40 43.02 +17 59 57.6 V 703
2019-02-09 10:15:11 C 07 41 06.45 +17 45 49.1 V T05
2019-02-09 10:22:09 C 07 41 06.51 +17 45 45.5 V T05
2019-02-09 10:36:27 C 07 41 06.62 +17 45 37.9 V T05
2019-02-09 10:52:59 C 07 41 06.75 +17 45 29.1 V T05
2019-02-10 01:55:56 C 07 41 22.98 +17 38 13.3 q 834
2019-02-10 02:43:35 C 07 41 23.41 +17 37 48.7 q 834
2019-02-11 10:39:32 C 07 42 00.61 +17 21 12.8 q E89
2019-02-11 10:58:59 C 07 42 00.88 +17 21 02.6 q E89
2019-02-13 03:51:02 C 07 42 59.51 +16 58 48.7 V 703
2019-02-13 03:58:33 C 07 42 59.66 +16 58 44.7 V 703
2019-02-13 04:06:04 C 07 42 59.80 +16 58 40.9 V 703
2019-02-13 04:13:35 C 07 42 59.94 +16 58 36.9 V 703
2019-02-13 19:16:01 C 07 43 24.34 +16 50 25.8 q 108
2019-02-13 19:26:49 C 07 43 24.55 +16 50 20.2 q 108
2019-02-13 19:35:44 C 07 43 24.77 +16 50 15.5 q 108
2019-02-13 20:58:19 C 07 43 26.53 +16 49 31.6 q 160
2019-02-13 21:01:11 C 07 43 26.59 +16 49 30.0 q 160
2019-02-13 21:04:00 C 07 43 26.65 +16 49 28.4 q 160
2019-02-14 01:11:41 C 07 43 34.55 +16 47 17.3 V W34
2019-02-14 01:22:30 C 07 43 34.79 +16 47 11.8 V W34
2019-02-14 01:36:52 C 07 43 35.10 +16 47 04.3 V W34
2019-02-14 01:51:10 C 07 43 35.40 +16 46 56.9 V W34
2019-02-14 19:54:55 C 07 44 07.25 +16 37 00.6 V G33
2019-02-14 19:55:31 C 07 44 07.26 +16 37 00.2 V G33
2019-02-14 19:56:44 C 07 44 07.29 +16 36 59.5 V G33
2019-02-14 19:57:48 C 07 44 07.31 +16 36 59.2 V G33
2019-02-14 19:58:52 C 07 44 07.34 +16 36 58.6 V G33
2019-02-14 19:59:31 C 07 44 07.36 +16 36 57.7 V G33
2019-02-14 20:33:54 C 07 44 08.19 +16 36 43.0 a 233
2019-02-14 20:41:34 C 07 44 08.38 +16 36 38.9 a 233
2019-02-14 20:52:17 C 07 44 08.64 +16 36 33.3 a 233
2019-02-14 21:02:38 C 07 44 08.89 +16 36 27.5 a 233
2019-02-14 21:11:13 C 07 44 09.10 +16 36 22.9 a 233
2019-02-14 21:26:43 C 07 44 09.46 +16 36 14.7 q 160
2019-02-14 21:29:39 C 07 44 09.53 +16 36 13.1 q 160
2019-02-14 21:32:40 C 07 44 09.60 +16 36 11.5 q 160
2019-02-15 11:19:43 C 07 44 35.45 +16 29 18.2 q E89
2019-02-15 11:45:07 C 07 44 36.10 +16 29 04.1 q E89
2019-02-15 19:56:50 C 07 44 53.54 +16 23 50.1 V G33
2019-02-15 19:57:34 C 07 44 53.61 +16 23 49.9 V G33
2019-02-15 19:58:11 C 07 44 53.62 +16 23 49.3 V G33