9400 (1994 TW1)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5807034709 ± 3.55e-09
Semi-major axis (a)2.5881020625 AU ± 1.90e-09
Inclination (i)35.98468731° ± 1.16e-06
Long. of Asc. Node (Ω)3.34616125° ± 1.27e-06
Arg. of Perihelion (ω)62.17387561° ± 8.67e-07
Mean Anomaly (M)145.88459058° ± 1.05e-06
Mean Motion (n)0.2367228484°/day ± 2.60e-10
Perihelion dist (q)1.08518221 AU ± 9.22e-09
Aphelion dist (Q)4.09102191 AU ± 9.66e-09
Orbital Period4.16362970 yr ± 4.58e-09
Physical Parameters
H (abs. magnitude)14.84
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.051″
Uncertainty0
Orbit TypeAmor
MOID0.283728 AU
Observations Used1787
Gaia Obs Used61
Oppositions19
Arc Total1991-2025
First Observation Used1991-03-18
Last Observation Used2025-03-29
Observations (2003)
Date Type RA Dec Mag Band Observatory
2019-08-14 01:05:58 C 23 55 26.15 -48 41 18.2 o K95
2019-08-14 01:38:21 C 23 55 23.92 -48 41 29.1 o K95
2019-08-24 14:22:11 C 23 33 30.09 -49 45 43.4 q E89
2019-08-24 14:35:16 C 23 33 28.66 -49 45 45.3 q E89
2019-08-24 14:49:30 C 23 33 27.15 -49 45 47.6 q E89
2019-09-08 01:31:02 C 22 50 54.88 -49 15 55.0 q X74
2019-09-08 01:44:36 C 22 50 53.02 -49 15 49.9 q X74
2019-09-08 01:58:08 C 22 50 51.10 -49 15 45.5 q X74
2019-09-11 12:37:35 C 22 39 39.87 -48 39 10.2 q E89
2019-09-11 12:47:26 C 22 39 38.50 -48 39 04.7 q E89
2019-09-11 12:57:43 C 22 39 37.09 -48 38 59.4 q E89
2019-09-11 13:08:09 C 22 39 35.66 -48 38 54.1 q E89
2019-09-11 13:18:12 C 22 39 34.28 -48 38 48.5 q E89
2019-09-17 20:46:07 C 22 19 28.10 -46 58 29.2 o K95
2019-09-17 21:21:04 C 22 19 23.48 -46 58 01.4 o K95
2019-09-18 01:58:35 C 22 18 48.03 -46 54 15.9 o W92
2019-09-18 02:03:51 C 22 18 47.29 -46 54 11.0 o W92
2019-09-19 03:48:53 C 22 15 30.10 -46 32 38.4 o W92
2019-09-19 04:03:55 C 22 15 28.16 -46 32 25.2 o W92
2019-09-23 07:21:24 C 22 03 24.30 -44 58 22.5 V T05
2019-09-23 07:40:24 C 22 03 22.02 -44 58 03.2 V T05
2019-09-23 07:54:10 C 22 03 20.37 -44 57 48.9 V T05
2019-09-23 08:03:41 C 22 03 19.21 -44 57 39.2 V T05
2019-09-27 08:30:15 C 21 52 39.66 -43 10 28.2 V T05
2019-09-27 08:34:17 C 21 52 39.22 -43 10 23.2 V T05
2019-09-27 08:42:58 C 21 52 38.28 -43 10 12.9 V T05
2019-09-27 08:57:03 C 21 52 36.76 -43 09 56.1 V T05
2019-09-30 19:22:42 C 21 44 29.50 -41 27 20.6 o K95
2019-09-30 19:33:28 C 21 44 28.63 -41 27 08.7 o K95
2019-10-03 04:59:56 C 21 39 23.60 -40 10 43.4 V T08
2019-10-03 05:04:47 C 21 39 23.16 -40 10 36.4 V T08
2019-10-03 07:36:49 C 21 39 09.85 -40 07 10.1 V T08
2019-10-04 22:01:25 C 21 36 02.22 -39 13 40.9 o K95
2019-10-05 04:19:06 C 21 35 32.79 -39 04 46.5 o W92
2019-10-05 04:38:03 C 21 35 31.31 -39 04 20.2 o W92
2019-10-05 21:53:23 C 21 34 12.59 -38 39 47.2 o K95
2019-10-05 22:06:11 C 21 34 11.66 -38 39 28.9 o K95
2019-10-07 05:49:51 C 21 31 54.17 -37 53 43.3 V T08
2019-10-07 06:11:22 C 21 31 52.60 -37 53 12.2 V T08
2019-10-07 06:16:03 C 21 31 52.24 -37 53 05.5 V T08
2019-10-12 10:02:59 C 21 24 16.08 -34 46 11.9 q E89
2019-10-12 10:39:02 C 21 24 14.12 -34 45 15.6 q E89
2019-10-12 11:16:03 C 21 24 12.09 -34 44 18.0 q E89
2019-10-14 15:06:38 S 21 21 39.96 -33 23 12.0 L C51
2019-10-14 18:15:08 S 21 21 31.38 -33 18 14.5 L C51
2019-10-14 21:23:38 S 21 21 22.894 -33 13 16.28 L C51
2019-10-14 22:57:42 S 21 21 18.698 -33 10 47.35 L C51
2019-10-15 00:31:57 S 21 21 14.486 -33 08 18.42 L C51
2019-10-15 02:06:12 S 21 21 10.32 -33 05 49.1 L C51
2019-10-15 03:40:27 S 21 21 06.17 -33 03 20.0 L C51