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
2014-11-01 04:16:26 C 01 33 47.38 +14 38 00.6 q 703
2014-11-01 04:26:35 C 01 33 46.82 +14 37 57.5 q 703
2014-11-11 01:45:32 C 01 22 59.12 +13 29 54.7 o 691
2014-11-11 02:35:36 C 01 22 56.97 +13 29 40.6 o 691
2014-11-11 03:38:52 C 01 22 54.21 +13 29 22.9 o 691
2014-11-16 03:32:35 C 01 18 05.48 +12 56 11.1 q 703
2014-11-16 03:39:50 C 01 18 05.17 +12 56 08.1 q 703
2014-11-16 03:47:06 C 01 18 04.95 +12 56 07.3 q 703
2014-11-16 03:54:23 C 01 18 04.56 +12 56 05.6 q 703
2014-11-17 04:24:35 C 01 17 09.69 +12 49 32.5 R G45
2014-11-17 04:37:05 C 01 17 09.20 +12 49 28.8 R G45
2014-11-17 04:46:27 C 01 17 08.82 +12 49 26.1 R G45
2014-11-17 04:52:20 C 01 17 08.60 +12 49 24.9 R G45
2014-11-18 06:09:37 C 01 16 13.798 +12 42 46.09 L F51
2014-11-18 06:26:47 C 01 16 13.162 +12 42 41.55 L F51
2014-11-18 06:43:59 C 01 16 12.529 +12 42 37.08 L F51
2014-11-18 07:01:15 C 01 16 11.883 +12 42 32.62 L F51
2014-11-24 03:59:02 C 01 11 38.29 +12 07 40.4 R G45
2014-11-24 04:05:41 C 01 11 38.06 +12 07 39.0 R G45
2014-11-24 04:11:39 C 01 11 37.91 +12 07 37.8 R G45
2014-11-24 04:14:51 C 01 11 37.82 +12 07 36.3 R G45
2014-11-24 04:20:49 C 01 11 37.64 +12 07 35.6 R G45
2014-11-26 03:42:07 C 01 10 19.14 +11 56 53.5 R G45
2014-11-26 03:54:44 C 01 10 18.81 +11 56 50.6 R G45
2014-11-26 04:03:54 C 01 10 18.44 +11 56 48.6 R G45
2014-11-26 04:09:52 C 01 10 18.36 +11 56 47.0 R G45
2014-11-28 08:59:25 C 01 08 59.039 +11 45 33.31 L F51
2014-11-28 09:15:31 C 01 08 58.637 +11 45 30.04 L F51
2014-11-28 09:31:43 C 01 08 58.241 +11 45 26.59 L F51
2014-11-28 09:47:58 C 01 08 57.837 +11 45 23.38 L F51
2014-11-29 03:43:58 C 01 08 33.22 +11 41 43.8 u H21
2014-11-29 03:48:11 C 01 08 33.12 +11 41 42.5 u H21
2014-11-29 03:52:27 C 01 08 32.99 +11 41 41.9 u H21
2015-01-19 02:20:03 C 01 20 52.02 +11 30 54.2 R G45
2015-01-19 02:25:58 C 01 20 52.28 +11 30 55.8 R G45
2015-01-19 02:40:23 C 01 20 52.82 +11 30 57.3 R G45
2015-01-19 02:46:26 C 01 20 53.04 +11 30 58.3 R G45
2015-01-19 03:06:20 C 01 20 53.83 +11 31 01.7 R G45
2015-02-13 02:26:32 C 01 51 08.24 +13 49 09.4 R G45
2015-02-13 02:32:30 C 01 51 08.61 +13 49 10.5 R G45
2015-02-13 02:41:34 C 01 51 09.18 +13 49 13.2 R G45
2015-02-13 02:53:36 C 01 51 09.91 +13 49 16.1 R G45
2015-02-13 03:05:49 C 01 51 10.63 +13 49 19.8 R G45
2015-02-13 03:11:48 C 01 51 11.00 +13 49 21.9 R G45
2015-02-14 02:11:31 C 01 52 35.56 +13 55 51.2 R G45
2015-02-14 02:17:23 C 01 52 35.95 +13 55 53.6 R G45
2015-02-14 02:23:15 C 01 52 36.28 +13 55 54.8 R G45
2015-02-14 02:29:14 C 01 52 36.59 +13 55 56.7 R G45
2015-02-14 02:32:14 C 01 52 36.90 +13 55 56.1 R G45
2015-02-14 02:38:18 C 01 52 37.21 +13 55 59.1 R G45