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
2025-10-13 12:48:34 C 03 29 28.010 +23 27 38.95 V T05
2025-10-13 12:53:09 C 03 29 27.874 +23 27 38.74 V T05
2025-10-13 13:42:06 C 03 29 26.626 +23 27 38.38 V T05
2025-10-15 17:14:28 C 03 28 08.602 +23 26 13.81 V P07
2025-10-15 18:21:39 C 03 28 06.574 +23 26 11.15 V P07
2025-10-15 19:47:39 C 03 28 04.109 +23 26 08.23 V P07
2025-10-15 20:39:39 C 03 28 02.734 +23 26 06.25 V P07
2025-10-16 09:44:29 C 03 27 41.461 +23 25 31.87 X F52
2025-10-16 10:02:44 C 03 27 40.924 +23 25 31.30 X F52
2025-10-16 10:21:00 C 03 27 40.382 +23 25 30.57 X F52
2025-10-16 10:35:33 C 03 27 39.974 +23 25 31.19 V T08
2025-10-16 10:39:23 C 03 27 39.831 +23 25 30.00 X F52
2025-10-16 10:39:49 C 03 27 39.857 +23 25 30.54 V T08
2025-10-16 10:40:48 C 03 27 39.763 +23 25 29.60 V T08
2025-10-16 10:45:27 C 03 27 39.689 +23 25 29.82 V T08
2025-10-16 10:50:01 C 03 27 39.528 +23 25 29.28 V T08
2025-10-16 11:03:11 C 03 27 39.074 +23 25 28.70 V T08
2025-10-16 18:08:31 C 03 27 26.952 +23 25 15.56 V P07
2025-10-16 19:06:17 C 03 27 25.231 +23 25 13.69 V P07
2025-10-16 19:10:46 C 03 27 25.066 +23 25 13.12 V P07
2025-10-16 20:08:57 C 03 27 23.280 +23 25 10.02 V P07
2025-10-19 11:31:46 C 03 25 27.192 +23 21 50.40 V T05
2025-10-19 11:34:22 C 03 25 27.106 +23 21 49.64 V T05
2025-10-19 11:38:55 C 03 25 26.940 +23 21 49.79 V T05
2025-10-19 11:55:37 C 03 25 26.395 +23 21 48.89 V T05
2025-10-19 12:23:15 C 03 25 25.402 +23 21 47.20 V T05
2025-10-19 12:33:51 C 03 25 25.049 +23 21 46.40 V T05
2025-10-19 13:22:51 C 03 25 23.410 +23 21 43.13 V T05
2025-10-20 01:11:20 C 03 25 00.266 +23 20 57.88 V R17
2025-10-20 01:30:53 C 03 24 59.580 +23 20 56.65 V R17
2025-10-20 01:50:25 C 03 24 58.901 +23 20 55.50 V R17
2025-10-20 02:10:01 C 03 24 58.246 +23 20 54.49 V R17
2025-10-21 19:44:39 C 03 23 31.37 +23 17 55.8 V D29
2025-10-21 20:05:01 C 03 23 30.62 +23 17 54.2 V D29
2025-10-21 20:25:23 C 03 23 29.85 +23 17 52.4 V D29
2025-10-26 07:12:09 C 03 19 19.938 +23 07 51.92 V G96
2025-10-26 07:20:14 C 03 19 19.592 +23 07 51.06 V G96
2025-10-26 07:28:18 C 03 19 19.225 +23 07 50.23 V G96
2025-10-26 07:36:23 C 03 19 18.869 +23 07 49.26 V G96
2025-10-26 17:47:41 C 03 18 52.81 +23 06 40.9 V D29
2025-10-26 18:08:03 C 03 18 51.91 +23 06 38.4 V D29
2025-10-26 18:28:24 C 03 18 51.01 +23 06 35.9 V D29
2025-10-28 18:18:32 C 03 16 44.92 +23 00 47.1 V D29
2025-10-28 18:38:54 C 03 16 43.97 +23 00 44.4 V D29
2025-10-28 18:59:15 C 03 16 43.01 +23 00 41.6 V D29
2025-10-29 11:09:30 C 03 15 58.997 +22 58 35.51 V T05
2025-10-29 11:14:47 C 03 15 58.723 +22 58 34.43 V T05
2025-10-29 11:59:46 C 03 15 56.587 +22 58 28.31 V T05
2025-10-29 12:10:19 C 03 15 56.086 +22 58 27.05 V T05
2025-10-30 09:35:23 C 03 14 56.551 +22 55 28.85 V T05