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
1998-08-17 16:05:38 C 21 57 39.45 -62 57 21.8 426
1998-08-17 16:22:16 C 21 57 37.38 -62 57 21.3 426
1998-08-17 16:38:53 C 21 57 35.28 -62 57 20.9 426
1998-09-27 10:06:44 C 20 30 29.69 -53 56 04.6 422
1998-09-27 10:08:44 C 20 30 29.64 -53 56 02.1 422
2002-08-04 14:05:00 C 20 18 27.10 -69 35 53.7 c 474
2002-08-04 14:09:29 C 20 18 26.46 -69 35 52.3 c 474
2002-08-04 14:15:00 C 20 18 25.82 -69 35 52.2 c 474
2004-04-12 14:57:33 C 12 48 29.97 -25 54 53.4 r E12
2004-04-12 15:04:07 C 12 48 29.65 -25 54 53.5 r E12
2004-04-12 15:10:41 C 12 48 29.03 -25 54 53.2 r E12
2004-04-12 15:17:17 C 12 48 28.86 -25 54 51.5 r E12
2004-04-23 13:26:37 C 12 34 28.61 -25 22 14.8 r E12
2004-04-23 13:41:20 C 12 34 27.89 -25 22 11.9 r E12
2004-04-23 13:56:03 C 12 34 27.21 -25 22 09.8 r E12
2004-04-23 14:10:47 C 12 34 26.43 -25 22 08.3 r E12
2004-04-24 14:31:48 C 12 33 15.67 -25 18 24.9 r E12
2004-04-24 14:46:33 C 12 33 15.04 -25 18 22.0 r E12
2004-04-24 15:01:16 C 12 33 14.20 -25 18 19.0 r E12
2004-04-24 15:16:01 C 12 33 13.54 -25 18 17.4 r E12
2004-04-24 15:45:03 C 12 33 12.15 -25 18 14.0 r E12
2004-04-24 16:01:29 C 12 33 11.43 -25 18 10.7 r E12
2004-04-24 16:17:48 C 12 33 10.45 -25 18 07.7 r E12
2004-04-24 16:34:11 C 12 33 09.74 -25 18 05.9 r E12
2004-04-25 11:54:29 C 12 32 14.97 -25 15 05.1 r E12
2004-04-25 12:11:05 C 12 32 14.25 -25 15 03.0 r E12
2004-04-25 12:26:56 C 12 32 13.39 -25 15 00.5 r E12
2004-04-25 13:50:19 C 12 32 09.38 -25 14 45.5 r E12
2004-04-26 12:57:54 C 12 31 04.92 -25 11 06.7 r E12
2004-04-26 13:09:51 C 12 31 04.43 -25 11 04.7 r E12
2004-04-26 13:21:44 C 12 31 03.86 -25 11 03.0 r E12
2004-04-26 13:33:37 C 12 31 03.26 -25 11 00.9 r E12
2007-11-19 12:18:33 C 12 49 19.45 +06 07 00.2 r 703
2007-11-19 12:22:31 C 12 49 19.59 +06 06 58.3 r 703
2007-11-19 12:26:34 C 12 49 19.77 +06 06 56.1 r 703
2007-11-19 12:30:42 C 12 49 20.13 +06 06 53.4 r 703
2007-12-13 11:43:28 C 13 18 12.03 -00 02 30.9 19.0 c 704
2007-12-13 12:02:16 C 13 18 12.80 -00 02 41.8 19.3 c 704
2007-12-13 12:21:03 C 13 18 13.57 -00 02 53.3 19.1 c 704
2007-12-17 13:03:12 C 13 22 07.17 -00 58 56.8 r G96
2007-12-17 13:06:43 C 13 22 07.32 -00 58 58.8 r G96
2007-12-17 13:10:11 C 13 22 07.46 -00 59 00.8 r G96
2007-12-17 13:13:40 C 13 22 07.57 -00 59 02.7 r G96
2008-01-09 11:24:55 C 13 38 02.61 -05 48 23.4 19.2 c 704
2008-01-09 11:43:43 C 13 38 02.90 -05 48 32.4 19.2 c 704
2008-01-09 12:02:30 C 13 38 03.22 -05 48 41.5 19.4 c 704
2008-01-09 12:21:16 C 13 38 03.59 -05 48 50.0 19.6 c 704
2008-01-20 19:05:56 C 13 41 13.69 -07 53 33.8 c D35
2008-01-20 19:18:41 C 13 41 13.73 -07 53 39.1 c D35
2008-01-20 19:31:20 C 13 41 13.75 -07 53 46.1 c D35