IAA RAS IAA Minor Planet Database

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
2019-10-15 05:14:31 S 21 21 02.04 -33 00 50.9 – L C51
2019-10-15 05:55:04 C 21 21 00.41 -32 59 54.1 – V T08
2019-10-15 06:09:37 C 21 20 59.73 -32 59 31.0 – V T08
2019-10-15 06:14:15 C 21 20 59.51 -32 59 23.7 – V T08
2019-10-15 08:23:02 S 21 20 53.89 -32 55 52.6 – L C51
2019-10-15 11:31:31 S 21 20 45.69 -32 50 52.3 – L C51
2019-10-15 14:39:51 S 21 20 37.65 -32 45 53.6 – L C51
2019-10-17 05:21:38 C 21 19 04.883 -31 44 11.73 – U F51
2019-10-17 05:34:32 C 21 19 04.357 -31 43 51.09 – U F51
2019-10-17 06:00:19 C 21 19 03.308 -31 43 09.77 – U F51
2019-10-17 06:45:49 C 21 19 01.45 -31 41 56.7 – V T05
2019-10-17 06:50:28 C 21 19 01.27 -31 41 49.3 – V T05
2019-10-17 07:05:07 C 21 19 00.68 -31 41 25.8 – V T05
2019-10-17 07:13:25 C 21 19 00.35 -31 41 12.1 – V T05
2019-10-19 06:44:45 C 21 17 22.20 -30 24 29.7 – V T08
2019-10-19 06:49:24 C 21 17 22.04 -30 24 22.5 – V T08
2019-10-19 06:57:21 C 21 17 21.77 -30 24 09.4 – V T08
2019-10-19 07:13:19 C 21 17 21.21 -30 23 43.4 – V T08
2019-10-19 16:53:46 C 21 17 03.30 -30 08 01.7 – q C97
2019-10-19 16:55:56 C 21 17 03.21 -30 07 57.7 – q C97
2019-10-19 16:58:07 C 21 17 03.16 -30 07 54.4 – q C97
2019-10-19 17:00:18 C 21 17 03.07 -30 07 50.8 – q C97
2019-10-21 07:06:36 C 21 15 58.90 -29 05 44.6 – V T05
2019-10-21 07:14:31 C 21 15 58.66 -29 05 31.6 – V T05
2019-10-21 07:39:59 C 21 15 57.95 -29 04 49.9 – V T05
2019-10-21 07:44:13 C 21 15 57.82 -29 04 42.8 – V T05
2019-10-23 06:31:46 C 21 14 53.03 -27 48 00.5 – V T08
2019-10-23 06:35:49 C 21 14 52.94 -27 47 53.8 – V T08
2019-10-23 06:46:31 C 21 14 52.70 -27 47 36.2 – V T08
2019-10-23 07:02:42 C 21 14 52.32 -27 47 09.4 – V T08
2019-10-23 16:43:17 C 21 14 40.84 -27 31 15.3 – q C97
2019-10-23 16:45:28 C 21 14 40.70 -27 31 10.8 – q C97
2019-10-23 16:47:40 C 21 14 40.67 -27 31 07.6 – q C97
2019-10-23 16:49:51 C 21 14 40.60 -27 31 03.0 – q C97
2019-10-24 05:06:53 C 21 14 27.160 -27 10 50.49 – U F51
2019-10-24 05:20:10 C 21 14 26.880 -27 10 28.62 – U F51
2019-10-24 05:46:42 C 21 14 26.325 -27 09 44.91 – U F51
2019-10-24 16:01:37 C 21 14 15.51 -26 52 51.8 – q C97
2019-10-24 16:03:47 C 21 14 15.46 -26 52 47.9 – q C97
2019-10-24 16:05:58 C 21 14 15.43 -26 52 44.1 – q C97
2019-10-24 16:08:09 C 21 14 15.37 -26 52 40.6 – q C97
2019-10-25 07:17:39 C 21 14 00.60 -26 27 39.6 – V T05
2019-10-25 07:22:18 C 21 14 00.52 -26 27 31.7 – V T05
2019-10-25 07:29:39 C 21 14 00.39 -26 27 19.8 – V T05
2019-10-25 07:45:02 C 21 14 00.12 -26 26 54.1 – V T05
2019-10-27 07:38:18 C 21 13 23.50 -25 07 42.9 – V T08
2019-10-27 07:43:02 C 21 13 23.44 -25 07 35.0 – V T08
2019-10-27 07:50:43 C 21 13 23.33 -25 07 22.3 – V T08
2019-10-27 08:10:45 C 21 13 23.08 -25 06 48.9 – V T08
2019-10-29 02:33:05 C 21 13 02.72 -23 56 38.7 – V 703