143381 (2003 BC21)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5106491276 ± 1.39e-08
Semi-major axis (a)2.5962495660 AU ± 7.26e-09
Inclination (i)5.47484963° ± 2.26e-06
Long. of Asc. Node (Ω)292.10179296° ± 2.11e-05
Arg. of Perihelion (ω)114.10977804° ± 2.21e-05
Mean Anomaly (M)206.50088096° ± 7.08e-06
Mean Motion (n)0.2356094040°/day ± 9.88e-10
Perihelion dist (q)1.27047699 AU ± 3.64e-08
Aphelion dist (Q)3.92202214 AU ± 3.78e-08
Orbital Period4.18330621 yr ± 1.76e-08
Physical Parameters
H (abs. magnitude)16.21
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.271″
Uncertainty0
Orbit TypeAmor
MOID0.295254 AU
Observations Used933
Gaia Obs Used39
Oppositions25
Arc Total1982-2015
First Observation Used1982-04-13
Last Observation Used2025-05-19
Observations (1003)
Date Type RA Dec Mag Band Observatory
1982-04-13 10:44:10 09 51 14.71 +06 37 47.2 g 413
1989-08-02 15:06:00 21 58 57.32 -06 51 43.9 g 413
1989-08-02 16:05:59 21 58 55.43 -06 51 38.1 g 413
1993-07-19 04:34:00 19 36 40.25 -21 21 52.6 18.5 809
1993-07-19 04:52:59 19 36 39.01 -21 21 54.4 809
1993-07-19 05:12:00 19 36 37.95 -21 21 54.7 809
2002-12-31 12:22:40 C 11 16 11.008 +00 37 10.13 645
2002-12-31 12:23:52 C 11 16 11.019 +00 37 09.82 645
2002-12-31 12:26:15 C 11 16 11.022 +00 37 09.39 645
2002-12-31 12:27:27 C 11 16 11.027 +00 37 08.97 645
2003-01-27 11:10:11 C 11 06 56.591 -00 13 19.21 645
2003-01-27 11:11:23 C 11 06 56.555 -00 13 18.99 645
2003-01-27 11:13:46 C 11 06 56.438 -00 13 18.95 645
2003-01-27 11:14:58 C 11 06 56.421 -00 13 18.67 645
2003-01-27 12:44:06 C 11 06 53.64 -00 13 12.6 20.7 c 608
2003-01-27 12:59:47 C 11 06 53.09 -00 13 12.1 20.5 c 608
2003-01-27 13:15:23 C 11 06 52.55 -00 13 11.0 20.0 c 608
2003-01-28 08:15:14 C 11 06 14.44 -00 12 09.3 c 651
2003-01-28 08:20:23 C 11 06 14.23 -00 12 09.3 c 651
2003-01-28 08:24:07 C 11 06 14.11 -00 12 08.9 c 651
2003-01-28 09:04:39 C 11 06 12.72 -00 12 06.0 c 673
2003-01-28 09:11:50 C 11 06 12.48 -00 12 05.6 c 673
2003-01-28 09:17:40 C 11 06 12.21 -00 12 05.1 c 673
2003-01-28 09:29:04 C 11 06 11.86 -00 12 05.5 19.1 c 704
2003-01-28 09:51:04 C 11 06 11.02 -00 12 03.8 19.0 c 704
2003-01-28 10:07:05 C 11 06 10.45 -00 12 02.7 c 926
2003-01-28 10:13:16 C 11 06 10.32 -00 12 02.3 19.2 c 704
2003-01-28 10:17:12 C 11 06 10.07 -00 12 01.7 c 926
2003-01-28 10:26:59 C 11 06 09.71 -00 12 01.7 c 926
2003-01-29 08:56:19 C 11 05 23.00 -00 10 34.4 c 673
2003-01-29 08:59:20 C 11 05 22.89 -00 10 34.2 c 673
2003-01-29 09:02:19 C 11 05 22.78 -00 10 33.9 c 673
2003-01-29 16:23:05 C 11 05 07.00 -00 09 56.4 18.5 c 413
2003-01-29 16:26:43 C 11 05 06.88 -00 09 56.4 18.4 c 413
2003-01-29 16:30:22 C 11 05 06.74 -00 09 56.1 18.5 c 413
2003-02-01 09:42:29 C 11 02 41.17 -00 04 34.2 19.6 c 704
2003-02-01 10:26:23 C 11 02 39.41 -00 04 29.3 19.4 c 704
2003-02-01 10:48:28 C 11 02 38.49 -00 04 28.7 20.0 c 704
2003-02-02 01:18:48 C 11 02 04.65 -00 03 01.5 c 246
2003-02-02 01:22:43 C 11 02 04.49 -00 03 01.8 c 246
2003-02-02 01:24:08 C 11 02 04.46 -00 03 01.3 c 246
2003-02-02 01:25:26 C 11 02 04.38 -00 03 01.5 c 246
2003-02-02 01:26:51 C 11 02 04.31 -00 03 01.3 c 246
2003-02-02 01:28:17 C 11 02 04.27 -00 03 00.7 c 246
2003-02-04 06:04:14 C 10 59 56.83 +00 02 53.3 m 446
2003-02-04 06:11:03 C 10 59 56.58 +00 02 53.3 m 446
2003-02-04 06:38:51 C 10 59 55.32 +00 02 56.3 m 446
2003-02-04 06:46:03 C 10 59 54.99 +00 02 57.5 m 446
2003-02-04 06:52:48 C 10 59 54.73 +00 02 58.6 m 446
2003-02-06 08:41:54 C 10 57 47.93 +00 09 27.0 c 670