2018 NR4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5272439249 ± 1.61e-08
Semi-major axis (a)2.1332398886 AU ± 3.03e-08
Inclination (i)61.58400677° ± 1.63e-05
Long. of Asc. Node (Ω)120.97269149° ± 2.96e-06
Arg. of Perihelion (ω)272.17974206° ± 1.07e-05
Mean Anomaly (M)97.91168578° ± 1.69e-05
Mean Motion (n)0.3163389964°/day ± 6.74e-09
Perihelion dist (q)1.00850212 AU ± 3.72e-08
Aphelion dist (Q)3.25797766 AU ± 5.76e-08
Orbital Period3.11572805 yr ± 6.64e-08
Physical Parameters
H (abs. magnitude)20.16
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.142″
Uncertainty0
Orbit TypeApollo
MOID0.434864 AU
Observations Used44
Oppositions3
Arc Total2015-2019
First Observation Used2015-12-09
Last Observation Used2019-02-04
Observations (47)
Date Type RA Dec Mag Band Observatory
2015-12-09 14:44:07 C 10 41 34.801 +00 56 53.76 V F51
2015-12-09 14:57:36 C 10 41 35.070 +00 57 16.48 V F51
2015-12-09 15:11:09 C 10 41 35.348 +00 57 39.87 V F51
2015-12-09 15:24:50 C 10 41 35.618 +00 58 02.81 V F51
2016-01-20 11:39:10 C 10 15 47.085 +41 23 39.99 V F51
2016-01-20 11:57:46 C 10 15 45.284 +41 24 25.92 V F51
2016-01-28 11:32:22 C 09 55 50.728 +48 33 58.34 V F51
2018-06-23 13:16:12 C 21 46 59.524 -01 40 31.92 V F51
2018-06-23 14:10:50 C 21 47 00.535 -01 41 44.94 V F51
2018-07-09 12:53:28 C 21 51 42.324 -14 51 05.76 U F51
2018-07-09 13:09:17 C 21 51 42.283 -14 51 53.44 U F51
2018-07-09 13:25:06 C 21 51 42.248 -14 52 40.72 U F51
2018-07-09 13:40:54 C 21 51 42.174 -14 53 27.88 U F51
2018-07-10 08:19:56 C 21 51 42.16 -15 50 26.2 u H21
2018-07-10 08:25:29 C 21 51 42.14 -15 50 43.8 u H21
2018-07-10 08:39:29 C 21 51 42.07 -15 51 27.1 u H21
2018-07-10 15:45:05 C 21 51 41.50 -16 13 22.3 U 474
2018-07-10 15:48:29 C 21 51 41.47 -16 13 32.8 U 474
2018-07-10 15:51:52 C 21 51 41.45 -16 13 44.0 U 474
2018-07-10 15:58:40 C 21 51 41.41 -16 14 05.2 U 474
2018-07-11 07:19:35 C 21 51 39.73 -17 03 35.0 u H21
2018-07-11 07:34:51 C 21 51 39.63 -17 04 24.6 u H21
2018-07-11 07:46:50 C 21 51 39.57 -17 05 03.5 u H21
2018-07-13 04:48:41 C 21 51 26.47 -19 37 58.2 U 807
2018-07-13 04:53:39 C 21 51 26.42 -19 38 15.9 U 807
2018-07-13 04:57:26 C 21 51 26.38 -19 38 29.4 U 807
2018-07-17 14:09:26 C 21 50 04.53 -26 29 32.6 U 474
2018-07-17 14:12:00 C 21 50 04.48 -26 29 43.4 U 474
2018-07-17 14:14:34 C 21 50 04.41 -26 29 54.4 U 474
2018-08-09 11:37:46 C 20 44 26.04 -73 04 50.3 V 474
2018-08-09 11:40:20 C 20 44 24.99 -73 05 01.4 V 474
2018-08-09 11:42:54 C 20 44 23.97 -73 05 12.1 V 474
2018-08-09 11:45:28 C 20 44 22.80 -73 05 23.4 V 474
2018-08-21 18:36:26 S 14 51 55.896 -83 10 05.05 L C51
2018-08-21 21:44:56 S 14 47 22.630 -83 06 57.71 L C51
2018-12-27 05:52:27 C 09 11 51.24 -35 11 41.4 u 807
2018-12-27 05:59:02 C 09 11 50.30 -35 11 23.3 u 807
2018-12-27 06:05:49 C 09 11 49.31 -35 11 04.5 u 807
2019-01-11 08:17:59 C 08 15 01.01 -11 25 38.5 V G96
2019-01-11 08:25:23 C 08 14 59.75 -11 25 01.4 V G96
2019-01-11 08:32:48 C 08 14 58.48 -11 24 24.8 V G96
2019-01-13 10:46:20 C 08 06 39.860 -07 11 13.44 V F51
2019-01-13 11:04:21 C 08 06 36.798 -07 09 41.78 V F51
2019-01-13 11:40:21 C 08 06 30.676 -07 06 38.41 V F51
2019-02-04 06:47:29 C 06 56 18.622 +29 06 25.97 U F52
2019-02-04 07:04:06 C 06 56 17.023 +29 07 09.51 U F52
2019-02-04 07:20:40 C 06 56 15.480 +29 07 53.01 U F52