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
2018-11-05 09:51:40 C 00 18 47.89 -15 16 01.6 V 474
2018-11-05 09:56:44 C 00 18 47.47 -15 16 03.6 V 474
2018-11-05 10:06:52 C 00 18 46.75 -15 16 08.0 V 474
2018-11-28 02:13:16 C 23 55 22.35 -16 16 59.0 u 807
2018-11-28 02:30:08 C 23 55 22.06 -16 16 56.2 u 807
2018-11-28 02:47:00 C 23 55 21.68 -16 16 53.2 u 807
2019-01-28 02:55:47 C 00 26 40.61 -02 09 38.2 o 291
2019-01-28 03:17:23 C 00 26 40.38 -02 09 16.6 o 291
2019-03-17 10:37:28 C 18 17 13.13 +27 25 18.0 o 691
2019-03-17 10:42:11 C 18 17 10.75 +27 25 14.1 o 691
2019-03-17 10:46:55 C 18 17 08.34 +27 25 10.1 o 691
2019-03-17 10:54:51 C 18 17 04.28 +27 25 03.4 V I52
2019-03-17 10:55:11 C 18 17 03.99 +27 25 02.6 V I52
2019-03-17 10:55:33 C 18 17 03.84 +27 25 02.2 V I52
2019-03-18 03:26:27 C 18 09 07.50 +27 08 07.0 V C95
2019-03-18 03:55:01 C 18 08 53.49 +27 07 38.9 V C95
2019-03-18 04:23:33 C 18 08 39.45 +27 07 12.0 V C95
2019-03-18 11:48:03 C 18 05 14.16 +26 59 41.7 o 691
2019-03-18 11:54:20 C 18 05 11.08 +26 59 35.0 o 691
2019-03-18 12:00:36 C 18 05 08.06 +26 59 28.9 o 691
2019-03-19 06:16:11 S 17 56 49.20 +26 39 28.5 L C51
2019-03-19 07:50:26 S 17 56 07.89 +26 37 43.2 L C51
2019-03-19 10:58:56 S 17 54 45.80 +26 34 09.5 L C51
2019-03-24 01:42:54 C 17 13 02.08 +24 19 29.7 V 204
2019-03-24 01:56:56 C 17 12 57.25 +24 19 13.3 V 204
2019-03-24 02:05:57 C 17 12 54.17 +24 19 03.1 V 204
2019-03-26 11:24:40 C 16 55 17.30 +23 09 10.1 V I52
2019-03-26 11:32:42 C 16 55 14.83 +23 08 59.1 V I52
2019-03-26 11:34:57 C 16 55 14.10 +23 08 57.0 V I52
2019-03-26 11:35:13 C 16 55 14.11 +23 08 57.0 V I52
2019-03-27 09:19:02 C 16 49 09.31 +22 42 35.2 u H21
2019-03-27 09:21:17 C 16 49 08.65 +22 42 32.4 u H21
2019-03-31 19:52:46 C 16 22 54.15 +20 39 41.6 q D29
2019-03-31 20:14:24 C 16 22 48.89 +20 39 17.6 q D29
2019-03-31 20:36:03 C 16 22 43.66 +20 38 53.4 q D29
2019-04-03 10:36:34 C 16 09 42.87 +19 31 27.4 V G96
2019-04-03 10:43:58 C 16 09 41.25 +19 31 20.1 V G96
2019-04-03 10:51:19 C 16 09 39.66 +19 31 11.7 V G96
2019-04-03 10:58:41 C 16 09 38.08 +19 31 04.5 V G96
2019-04-04 10:14:51 C 16 05 05.74 +19 06 28.2 V 703
2019-04-04 10:22:24 C 16 05 04.07 +19 06 19.5 V 703
2019-04-04 10:37:32 C 16 05 00.96 +19 06 04.1 V 703
2019-04-06 13:20:56 C 15 55 39.77 +18 13 52.1 V T05
2019-04-06 13:28:47 C 15 55 38.18 +18 13 44.5 V T05
2019-04-06 13:43:20 C 15 55 35.31 +18 13 30.1 V T05
2019-04-06 14:00:24 C 15 55 31.98 +18 13 10.7 V T05
2019-04-08 10:10:18 C 15 47 58.02 +17 28 31.1 V 703
2019-04-08 10:17:55 C 15 47 56.64 +17 28 24.1 V 703
2019-04-08 10:25:31 C 15 47 55.23 +17 28 14.6 V 703
2019-04-08 10:33:06 C 15 47 53.90 +17 28 08.2 V 703