499986 (2011 NP)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.1952854296 ± 9.41e-08
Semi-major axis (a)1.5922755607 AU ± 2.71e-09
Inclination (i)39.04659339° ± 1.96e-05
Long. of Asc. Node (Ω)295.10722412° ± 3.57e-06
Arg. of Perihelion (ω)354.99574768° ± 1.28e-04
Mean Anomaly (M)58.47005260° ± 8.56e-05
Mean Motion (n)0.4905518661°/day ± 1.25e-09
Perihelion dist (q)1.28132734 AU ± 1.50e-07
Aphelion dist (Q)1.90322378 AU ± 1.50e-07
Orbital Period2.00921931 yr ± 5.13e-09
Physical Parameters
H (abs. magnitude)19.91
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.354″
Uncertainty0
Orbit TypeAmor
MOID0.264127 AU
Observations Used210
Oppositions7
Arc Total2011-2025
First Observation Used2011-07-03
Last Observation Used2025-08-27
Observations (212)
Date Type RA Dec Mag Band Observatory
2011-07-12 00:24:39 C 21 36 09.01 -07 33 13.3 r A17
2011-07-12 00:38:26 C 21 36 06.44 -07 32 13.6 r A17
2011-07-12 00:47:08 C 21 36 04.84 -07 31 36.1 r A17
2011-07-12 02:00:13 C 21 35 51.22 -07 26 17.9 v 204
2011-07-12 02:09:17 C 21 35 49.54 -07 25 38.6 v 204
2011-07-12 07:00:48 C 21 34 57.28 -07 04 29.3 t H21
2011-07-12 07:08:22 C 21 34 55.90 -07 03 55.9 t H21
2011-07-12 07:16:08 C 21 34 54.43 -07 03 22.0 t H21
2011-07-12 07:23:39 C 21 34 53.02 -07 02 49.5 t H21
2011-07-15 05:30:49 C 21 21 49.26 -01 53 23.1 t H21
2011-07-15 05:36:06 C 21 21 48.22 -01 52 59.8 t H21
2011-07-15 05:41:20 C 21 21 47.18 -01 52 36.3 t H21
2011-07-15 05:46:34 C 21 21 46.18 -01 52 13.4 t H21
2011-07-18 05:50:15 C 21 07 45.90 +03 27 10.2 o H21
2011-07-18 05:55:33 C 21 07 44.81 +03 27 34.0 o H21
2011-07-18 06:00:51 C 21 07 43.74 +03 27 57.4 o H21
2011-07-18 06:06:30 C 21 07 42.60 +03 28 22.3 o H21
2011-07-19 04:36:11 C 21 03 16.09 +05 06 31.0 r H21
2011-07-19 04:42:44 C 21 03 14.73 +05 06 59.7 r H21
2011-07-19 04:50:14 C 21 03 13.17 +05 07 32.4 r H21
2011-07-20 23:29:41 C 20 54 42.96 +08 09 42.6 c A24
2011-07-20 23:31:18 C 20 54 42.62 +08 09 49.4 c A24
2011-07-21 05:00:59 C 20 53 37.09 +08 32 51.3 r H21
2011-07-21 05:09:17 C 20 53 35.37 +08 33 26.1 r H21
2011-07-21 05:14:24 C 20 53 34.32 +08 33 47.5 r H21
2011-07-22 05:19:45 C 20 48 45.46 +10 13 09.9 o H21
2011-07-22 05:23:12 C 20 48 44.75 +10 13 24.1 o H21
2011-07-22 05:26:42 C 20 48 44.04 +10 13 38.3 o H21
2011-07-22 05:30:44 C 20 48 43.19 +10 13 54.7 o H21
2011-07-22 05:34:07 C 20 48 42.51 +10 14 08.5 o H21
2011-07-22 06:27:57 C 20 48 30.91 +10 18 19.8 o 807
2011-07-22 06:32:58 C 20 48 29.85 +10 18 39.6 o 807
2011-07-22 06:37:58 C 20 48 28.82 +10 19 00.1 o 807
2011-07-22 06:42:57 C 20 48 27.80 +10 19 20.7 o 807
2011-07-23 04:47:11 C 20 44 04.69 +11 47 23.4 t H21
2011-07-23 04:51:27 C 20 44 03.81 +11 47 40.4 t H21
2011-07-23 04:55:54 C 20 44 02.90 +11 47 57.8 t H21
2011-07-23 05:00:21 C 20 44 01.96 +11 48 15.4 t H21
2011-07-24 04:34:17 C 20 39 20.77 +13 20 06.6 t H21
2011-07-24 04:42:26 C 20 39 19.12 +13 20 37.8 t H21
2011-07-24 04:46:43 C 20 39 18.26 +13 20 54.2 t H21
2011-07-24 04:54:39 C 20 39 16.61 +13 21 25.0 t H21
2011-07-26 00:58:01 C 20 30 34.41 +16 04 44.4 c A24
2011-07-26 01:00:11 C 20 30 33.93 +16 04 51.5 c A24
2011-07-26 01:48:41 C 20 30 24.18 +16 07 44.0 c A24
2011-07-26 04:35:32 C 20 29 52.84 +16 17 41.7 t H21
2011-07-26 04:40:07 C 20 29 51.93 +16 17 58.2 t H21
2011-07-26 04:44:21 C 20 29 51.06 +16 18 13.2 t H21
2011-07-26 04:48:34 C 20 29 50.22 +16 18 28.2 t H21
2011-07-29 03:47:18 C 20 16 13.19 +20 15 01.2 o H21