2018 TD4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3730157950 ± 1.41e-08
Semi-major axis (a)1.4170539193 AU ± 5.19e-09
Inclination (i)4.59401703° ± 2.23e-06
Long. of Asc. Node (Ω)129.64671259° ± 6.54e-05
Arg. of Perihelion (ω)358.19364139° ± 6.41e-05
Mean Anomaly (M)9.56351232° ± 8.57e-06
Mean Motion (n)0.5842957304°/day ± 3.21e-09
Perihelion dist (q)0.88847043 AU ± 2.03e-08
Aphelion dist (Q)1.94563741 AU ± 2.12e-08
Orbital Period1.68686203 yr ± 9.27e-09
Physical Parameters
H (abs. magnitude)22.11
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.265″
Uncertainty0
Orbit TypeApollo
MOID0.059960 AU
Observations Used121
Oppositions2
Arc Total2013-2019
First Observation Used2013-11-01
Last Observation Used2019-05-10
Observations (128)
Date Type RA Dec Mag Band Observatory
2019-04-13 09:08:47 C 15 29 47.80 +15 33 01.5 V 703
2019-04-13 09:16:31 C 15 29 46.59 +15 32 54.2 V 703
2019-04-13 09:24:13 C 15 29 45.43 +15 32 46.8 V 703
2019-04-14 06:39:06 C 15 26 51.15 +15 12 39.0 V G96
2019-04-14 06:45:55 C 15 26 50.16 +15 12 33.1 V G96
2019-04-14 06:52:43 C 15 26 49.17 +15 12 26.7 V G96
2019-04-14 06:59:30 C 15 26 48.17 +15 12 20.5 V G96
2019-04-14 13:50:30 C 15 25 49.341 +15 06 06.06 U F51
2019-04-14 14:08:26 C 15 25 46.671 +15 05 48.82 U F51
2019-04-14 14:26:27 C 15 25 44.009 +15 05 31.41 U F51
2019-04-14 14:44:26 C 15 25 41.362 +15 05 13.96 U F51
2019-04-16 05:49:21 C 15 20 37.21 +14 28 31.7 u H21
2019-04-16 05:55:26 C 15 20 36.40 +14 28 26.2 u H21
2019-05-01 15:53:06 C 14 44 06.12 +09 03 36.5 q D29
2019-05-01 16:13:28 C 14 44 04.54 +09 03 18.7 q D29
2019-05-01 16:33:49 C 14 44 02.89 +09 03 01.6 q D29
2019-05-06 08:23:39 C 14 36 46.996 +07 30 57.64 U F51
2019-05-06 08:24:34 C 14 36 46.934 +07 30 56.77 U F51
2019-05-06 08:41:02 C 14 36 45.847 +07 30 43.58 U F51
2019-05-06 08:41:57 C 14 36 45.796 +07 30 42.85 U F51
2019-05-06 08:58:24 C 14 36 44.702 +07 30 29.61 U F51
2019-05-06 08:59:20 C 14 36 44.633 +07 30 28.82 U F51
2019-05-06 09:15:52 C 14 36 43.551 +07 30 15.64 U F51
2019-05-06 09:16:47 C 14 36 43.475 +07 30 14.72 U F51
2019-05-10 11:48:08 C 14 31 35.808 +06 11 13.64 U F51
2019-05-10 12:05:33 C 14 31 34.893 +06 10 59.78 U F51
2019-05-10 12:22:57 C 14 31 33.978 +06 10 45.83 U F51
2019-05-10 12:40:26 C 14 31 33.069 +06 10 31.79 U F51