378842 (2008 TD4)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6183797038 ± 7.53e-08
Semi-major axis (a)1.8213010607 AU ± 9.49e-09
Inclination (i)14.45387763° ± 1.23e-05
Long. of Asc. Node (Ω)221.83075141° ± 2.11e-05
Arg. of Perihelion (ω)54.94123949° ± 2.47e-05
Mean Anomaly (M)14.05710883° ± 1.87e-05
Mean Motion (n)0.4009956537°/day ± 3.13e-09
Perihelion dist (q)0.69504545 AU ± 1.37e-07
Aphelion dist (Q)2.94755667 AU ± 1.38e-07
Orbital Period2.45794755 yr ± 1.92e-08
Physical Parameters
H (abs. magnitude)19.78
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.297″
Uncertainty0
Orbit TypeApollo
MOID0.090399 AU
Observations Used146
Oppositions9
Arc Total2008-2023
First Observation Used2008-10-07
Last Observation Used2023-02-17
Observations (155)
Date Type RA Dec Mag Band Observatory
2008-10-11 13:21:48 C 23 51 35.55 +30 24 40.7 m 355
2008-10-11 13:24:56 C 23 51 35.78 +30 24 28.8 m 355
2008-10-11 13:28:05 C 23 51 35.91 +30 24 17.4 m 355
2008-10-11 13:31:14 C 23 51 36.06 +30 24 06.5 m 355
2008-10-11 13:33:19 C 23 51 36.09 +30 23 57.5 m 355
2008-10-12 01:35:35 C 23 52 20.16 +29 40 10.3 o H55
2008-10-12 01:44:44 C 23 52 20.63 +29 39 38.1 o H55
2008-10-12 01:53:01 C 23 52 21.03 +29 39 08.4 o H55
2008-10-16 06:53:40 C 23 57 36.62 +24 15 36.6 r 448
2008-10-16 07:01:47 C 23 57 36.92 +24 15 13.5 r 448
2008-10-16 07:09:55 C 23 57 37.26 +24 14 49.7 r 448
2008-10-17 01:07:01 C 23 58 29.55 +23 24 35.0 o H55
2008-10-17 01:11:11 C 23 58 29.73 +23 24 23.9 o H55
2008-10-17 01:15:37 C 23 58 29.91 +23 24 11.6 o H55
2008-10-18 18:29:51 C 00 00 20.97 +21 36 19.7 r A17
2008-10-18 18:38:39 C 00 00 21.32 +21 35 58.1 r A17
2008-10-18 18:55:29 C 00 00 21.98 +21 35 16.1 r A17
2008-10-19 02:21:51 C 00 00 41.25 +21 16 57.7 o H55
2008-10-19 02:27:03 C 00 00 41.45 +21 16 44.9 o H55
2008-10-19 02:32:15 C 00 00 41.65 +21 16 32.1 o H55
2008-10-19 02:37:24 C 00 00 41.85 +21 16 19.6 o H55
2008-10-19 03:10:09 C 00 00 42.67 +21 15 26.0 o 304
2008-10-19 03:13:07 C 00 00 42.77 +21 15 18.8 o 304
2008-10-19 03:16:04 C 00 00 42.97 +21 15 12.1 o 304
2008-10-19 03:19:02 C 00 00 42.99 +21 15 04.3 o 304
2008-10-19 03:21:57 C 00 00 43.10 +21 14 57.1 o 304
2008-10-19 03:24:54 C 00 00 43.21 +21 14 49.9 o 304
2008-10-19 03:27:52 C 00 00 43.32 +21 14 42.6 o 304
2008-10-19 03:30:49 C 00 00 43.43 +21 14 35.4 o 304
2008-10-19 03:33:46 C 00 00 43.53 +21 14 28.1 o 304
2008-10-19 03:36:44 C 00 00 43.64 +21 14 20.9 o 304
2008-10-19 03:39:42 C 00 00 43.75 +21 14 13.6 o 304
2008-10-19 03:42:40 C 00 00 43.86 +21 14 06.4 o 304
2008-10-19 03:45:37 C 00 00 43.96 +21 13 59.3 o 304
2008-10-19 03:48:34 C 00 00 44.06 +21 13 52.0 o 304
2008-10-19 03:51:31 C 00 00 44.17 +21 13 44.6 o 304
2008-10-19 18:35:09 C 00 01 23.36 +20 37 49.4 r A13
2008-10-19 19:03:35 C 00 01 24.45 +20 36 42.8 r A13
2008-10-19 22:30:24 C 00 01 32.17 +20 28 39.2 v 204
2008-10-19 22:37:46 C 00 01 32.47 +20 28 21.9 v 204
2008-10-19 23:39:14 C 00 01 34.77 +20 25 57.2 v 204
2008-10-19 23:46:56 C 00 01 35.06 +20 25 39.2 v 204
2008-10-24 05:42:57 C 00 05 43.33 +16 52 54.8 r 703
2008-10-24 05:56:10 C 00 05 43.76 +16 52 29.8 r 703
2008-10-24 06:09:25 C 00 05 44.23 +16 52 05.8 r 703
2008-10-24 06:22:45 C 00 05 44.66 +16 51 40.2 r 703
2008-10-28 04:01:55 C 00 09 20.86 +14 14 52.2 r 448
2008-10-28 04:25:16 C 00 09 21.63 +14 14 17.0 r 448
2008-10-28 04:48:38 C 00 09 22.41 +14 13 41.9 r 448
2008-10-29 01:09:56 C 00 10 09.08 +13 43 46.7 o H55