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
2019-04-19 11:16:25 C 10 20 54.63 +00 37 34.9 V T08
2019-04-19 19:36:36 C 10 22 01.28 +00 32 24.9 a 233
2019-04-19 19:42:46 C 10 22 02.07 +00 32 21.0 a 233
2019-04-19 19:48:19 C 10 22 02.75 +00 32 17.7 a 233
2019-04-19 19:53:53 C 10 22 03.43 +00 32 14.6 a 233
2019-04-19 19:59:26 C 10 22 04.16 +00 32 11.1 a 233
2019-04-20 09:35:49 C 10 23 49.75 +00 24 08.4 V T05
2019-04-20 09:48:23 C 10 23 51.32 +00 24 00.9 V T05
2019-04-20 09:59:23 C 10 23 52.71 +00 23 54.4 V T05
2019-04-20 10:11:32 C 10 23 54.25 +00 23 47.0 V T05
2019-04-21 16:49:56 C 10 27 53.98 +00 05 28.7 q C97
2019-04-21 16:52:07 C 10 27 54.14 +00 05 27.2 q C97
2019-04-21 16:54:18 C 10 27 54.41 +00 05 25.7 q C97
2019-04-21 16:56:29 C 10 27 54.62 +00 05 25.2 q C97
2019-04-22 05:48:03 C 10 29 33.99 -00 02 16.5 V 703
2019-04-22 05:55:43 C 10 29 34.93 -00 02 20.9 V 703
2019-04-22 06:03:22 C 10 29 35.89 -00 02 25.6 V 703
2019-04-22 06:11:01 C 10 29 36.84 -00 02 30.0 V 703
2019-04-23 08:29:03 C 10 33 00.24 -00 17 56.4 V T08
2019-04-23 08:41:32 C 10 33 01.77 -00 18 03.8 V T08
2019-04-23 08:54:35 C 10 33 03.37 -00 18 11.5 V T08
2019-04-23 09:07:06 C 10 33 04.91 -00 18 18.7 V T08
2019-04-24 09:45:52 C 10 36 14.85 -00 32 24.3 q E89
2019-04-24 10:03:39 C 10 36 17.03 -00 32 34.6 q E89
2019-04-24 17:28:34 C 10 37 13.93 -00 37 14.8 q C97
2019-04-24 17:30:45 C 10 37 14.16 -00 37 15.9 q C97
2019-04-24 17:32:56 C 10 37 14.43 -00 37 16.9 q C97
2019-04-24 17:35:07 C 10 37 14.68 -00 37 18.0 q C97
2019-04-24 20:47:55 C 10 37 39.11 -00 39 16.8 t 073
2019-04-24 21:08:37 C 10 37 41.67 -00 39 28.5 t 073
2019-04-24 21:36:29 C 10 37 45.11 -00 39 44.5 t 073
2019-04-26 05:24:50 C 10 41 47.69 -00 58 03.1 V 703
2019-04-26 05:26:42 C 10 41 47.93 -00 58 04.6 V 703
2019-04-26 05:33:04 C 10 41 48.73 -00 58 08.7 V 703
2019-04-26 05:34:56 C 10 41 48.92 -00 58 09.5 V 703
2019-04-26 05:41:19 C 10 41 49.73 -00 58 13.3 V 703
2019-04-26 05:43:10 C 10 41 49.96 -00 58 13.9 V 703
2019-04-26 05:51:25 C 10 41 50.82 -00 58 19.8 V 703
2019-04-26 17:07:42 C 10 43 16.83 -01 04 43.7 q C97
2019-04-26 17:09:53 C 10 43 17.06 -01 04 44.6 q C97
2019-04-27 08:30:10 C 10 45 12.72 -01 13 29.6 V T08
2019-04-27 08:42:31 C 10 45 14.21 -01 13 36.6 V T08
2019-04-27 08:54:12 C 10 45 15.62 -01 13 43.2 V T08
2019-04-27 21:07:55 C 10 46 48.21 -01 20 46.9 q 006
2019-04-27 21:10:54 C 10 46 48.58 -01 20 48.4 q 006
2019-04-27 21:13:54 C 10 46 48.93 -01 20 50.2 q 006
2019-04-27 21:16:55 C 10 46 49.30 -01 20 52.1 q 006
2019-04-27 21:19:54 C 10 46 49.69 -01 20 54.2 q 006
2019-04-27 21:22:54 C 10 46 50.03 -01 20 55.4 q 006
2019-04-27 21:25:55 C 10 46 50.38 -01 20 57.1 q 006