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
2011-07-29 03:51:43 C 20 16 12.34 +20 15 15.1 o H21
2011-07-29 04:02:54 C 20 16 10.18 +20 15 49.8 o H21
2011-07-29 04:06:47 C 20 16 09.44 +20 16 01.7 o H21
2011-08-01 08:18:23 C 20 02 16.242 +23 53 59.97 L F51
2011-08-01 08:35:46 C 20 02 13.064 +23 54 45.83 L F51
2011-08-01 08:51:10 C 20 02 10.241 +23 55 26.23 L F51
2011-08-15 04:46:18 C 19 14 52.02 +33 29 54.0 v H21
2011-08-15 04:59:56 C 19 14 50.47 +33 30 07.8 v H21
2011-09-22 01:07:23 C 18 47 29.41 +37 50 22.3 o H21
2011-09-22 01:26:04 C 18 47 29.85 +37 50 21.3 o H21
2011-09-22 01:45:21 C 18 47 30.27 +37 50 20.5 o H21
2013-07-03 18:22:55 C 21 52 04.16 -28 11 22.0 q E12
2013-07-03 18:39:08 C 21 52 01.17 -28 10 26.1 q E12
2013-07-11 04:41:38 C 21 17 24.25 -16 26 18.0 r Y00
2013-07-11 04:42:59 C 21 17 23.85 -16 26 11.6 r Y00
2013-07-11 04:44:20 C 21 17 23.63 -16 26 04.6 r Y00
2013-07-13 02:06:05 C 21 07 51.53 -13 02 12.5 q J13
2013-07-13 02:06:49 C 21 07 51.39 -13 02 09.5 q J13
2013-07-13 02:07:31 C 21 07 51.22 -13 02 06.1 q J13
2013-07-13 02:08:15 C 21 07 51.06 -13 02 02.8 q J13
2013-07-14 08:36:36 C 21 01 19.22 -10 40 56.7 r Y00
2013-07-14 08:37:56 C 21 01 18.96 -10 40 51.4 r Y00
2013-07-14 08:39:15 C 21 01 18.69 -10 40 44.0 r Y00
2013-07-15 01:26:28 C 20 57 44.34 -09 23 04.0 t 204
2013-07-15 01:37:27 C 20 57 41.91 -09 22 12.6 t 204
2013-07-15 01:48:53 C 20 57 39.38 -09 21 18.9 t 204
2013-07-27 23:48:29 C 19 54 05.26 +12 48 54.5 q 204
2013-07-27 23:57:21 C 19 54 03.59 +12 49 25.8 q 204
2013-07-28 00:11:43 C 19 54 00.87 +12 50 15.7 q 204
2015-07-02 08:59:37 C 21 43 05.53 -39 41 55.0 u 807
2015-07-02 09:06:02 C 21 43 04.14 -39 41 36.2 u 807
2015-07-02 09:12:29 C 21 43 02.75 -39 41 16.8 u 807
2015-07-03 05:30:59 C 21 38 46.97 -38 41 03.7 u 807
2015-07-03 05:37:29 C 21 38 45.58 -38 40 44.1 u 807
2015-07-03 05:44:00 C 21 38 44.15 -38 40 24.0 u 807
2015-07-19 07:54:00 C 20 09 39.40 -11 15 39.2 q H45
2015-07-19 07:56:01 C 20 09 38.94 -11 15 29.0 q H45
2015-07-19 07:57:23 C 20 09 38.60 -11 15 22.7 q H45
2015-07-19 07:58:43 C 20 09 38.33 -11 15 15.6 q H45
2015-07-19 07:59:46 C 20 09 38.09 -11 15 10.7 q H45
2015-07-19 08:00:54 C 20 09 37.80 -11 15 05.5 q H45
2015-07-22 03:19:03 C 19 55 12.00 -05 48 29.2 u 807
2015-07-22 03:22:27 C 19 55 11.27 -05 48 13.1 u 807
2015-07-22 03:26:02 C 19 55 10.50 -05 47 56.2 u 807
2015-07-22 03:29:17 C 19 55 09.80 -05 47 40.8 u 807
2015-07-22 03:32:51 C 19 55 09.03 -05 47 24.0 u 807
2015-07-26 00:23:59 C 19 36 54.24 +01 09 31.7 q 204
2015-07-26 00:29:18 C 19 36 53.27 +01 09 54.4 q 204
2015-07-26 00:35:34 C 19 36 52.04 +01 10 21.7 q 204
2017-07-14 11:25:54 C 20 03 07.47 -28 55 58.9 L T05