2018 TW4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4698726579 ± 3.31e-08
Semi-major axis (a)2.1667279606 AU ± 7.69e-09
Inclination (i)7.24523375° ± 8.43e-06
Long. of Asc. Node (Ω)313.51726405° ± 1.70e-04
Arg. of Perihelion (ω)336.74373559° ± 1.71e-04
Mean Anomaly (M)124.22419307° ± 2.72e-05
Mean Motion (n)0.3090335953°/day ± 1.64e-09
Perihelion dist (q)1.14864173 AU ± 7.19e-08
Aphelion dist (Q)3.18481419 AU ± 7.27e-08
Orbital Period3.18938231 yr ± 1.70e-08
Physical Parameters
H (abs. magnitude)19.92
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.211″
Uncertainty0
Orbit TypeAmor
MOID0.138864 AU
Observations Used83
Oppositions13
Arc Total2002-2021
First Observation Used2002-10-03
Last Observation Used2021-05-12
Observations (85)
Date Type RA Dec Mag Band Observatory
2021-03-18 12:01:04 C 13 23 20.649 -22 24 28.79 U F51
2021-03-18 12:15:14 C 13 23 20.254 -22 24 33.15 U F51
2021-03-18 12:29:22 C 13 23 19.821 -22 24 37.84 U F51
2021-03-18 12:43:30 C 13 23 19.443 -22 24 42.07 U F51
2021-03-20 09:00:00 C 13 22 06.17 -22 38 14.6 W84
2021-03-20 09:10:27 C 13 22 05.85 -22 38 17.6 W84
2021-03-20 09:13:56 C 13 22 05.74 -22 38 18.6 W84
2021-03-20 09:45:14 C 13 22 04.77 -22 38 27.8 W84
2021-04-09 07:29:25 C 12 59 58.40 -24 14 55.4 V G96
2021-04-09 07:37:18 C 12 59 57.87 -24 14 56.6 V G96
2021-04-09 07:45:11 C 12 59 57.42 -24 14 56.8 V G96
2021-04-09 07:53:04 C 12 59 56.92 -24 14 57.0 V G96
2021-04-09 08:44:14 C 12 59 54.258 -24 14 59.07 U F52
2021-04-09 09:07:36 C 12 59 52.740 -24 15 01.08 U F52
2021-04-09 09:30:39 C 12 59 51.234 -24 15 02.80 U F52
2021-04-09 09:53:54 C 12 59 49.732 -24 15 04.79 U F52
2021-04-09 10:06:59 C 12 59 48.886 -24 15 05.62 U F51
2021-04-09 10:22:49 C 12 59 47.849 -24 15 06.93 U F51
2021-04-09 10:38:37 C 12 59 46.818 -24 15 08.09 U F51
2021-04-09 10:54:23 C 12 59 45.787 -24 15 09.19 U F51
2021-04-17 09:54:24 C 12 47 26.692 -24 18 07.48 U F51
2021-04-17 10:11:07 C 12 47 25.509 -24 18 06.78 U F51
2021-04-17 10:27:51 C 12 47 24.331 -24 18 05.88 U F51
2021-04-17 10:44:34 C 12 47 23.147 -24 18 05.10 U F51
2021-04-18 07:58:05 C 12 45 58.893 -24 17 00.61 U F52
2021-04-18 08:12:45 C 12 45 57.874 -24 16 59.98 U F52
2021-04-18 08:27:26 C 12 45 56.819 -24 16 59.14 U F52
2021-04-18 08:42:07 C 12 45 55.799 -24 16 58.60 U F52
2021-04-20 06:27:57 C 12 42 52.25 -24 13 44.8 V G96
2021-04-20 06:35:18 C 12 42 51.75 -24 13 44.4 V G96
2021-04-20 06:42:39 C 12 42 51.19 -24 13 43.9 V G96
2021-04-20 06:50:00 C 12 42 50.70 -24 13 43.5 V G96
2021-05-12 07:24:42 C 12 13 10.472 -22 27 54.53 U F51
2021-05-12 07:40:37 C 12 13 09.804 -22 27 50.27 U F51
2021-05-12 07:56:28 C 12 13 09.127 -22 27 45.91 U F51