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
2011-01-07 03:30:37 C 01 36 34.61 +16 46 48.6 17.5 c 704
2011-01-07 03:50:33 C 01 36 37.57 +16 46 56.5 17.5 c 704
2011-01-07 04:11:21 C 01 36 40.62 +16 47 06.7 17.8 c 704
2011-01-07 04:31:43 C 01 36 43.64 +16 47 15.6 18.4 c 704
2011-01-23 18:48:01 C 02 35 57.56 +19 25 22.2 u 160
2011-01-23 18:49:58 C 02 35 57.84 +19 25 22.5 u 160
2011-01-23 18:51:56 C 02 35 58.11 +19 25 23.3 u 160
2011-01-23 18:53:41 C 02 35 58.36 +19 25 24.0 u 160
2011-01-23 18:55:52 C 02 35 58.66 +19 25 24.9 u 160
2011-01-24 04:43:32 C 02 37 24.49 +19 28 46.2 r 703
2011-01-24 04:52:24 C 02 37 25.75 +19 28 47.8 r 703
2011-01-24 05:01:18 C 02 37 27.08 +19 28 51.4 r 703
2011-01-24 05:10:13 C 02 37 28.34 +19 28 55.3 r 703
2011-01-24 18:24:02 C 02 39 24.90 +19 33 19.2 u 160
2011-01-24 18:27:00 C 02 39 25.33 +19 33 20.2 u 160
2011-01-24 18:29:47 C 02 39 25.71 +19 33 20.9 u 160
2011-01-28 03:31:47 C 02 51 13.02 +19 59 23.2 18.1 c 704
2011-01-28 03:50:11 C 02 51 15.64 +19 59 28.7 18.4 c 704
2011-01-28 04:08:36 C 02 51 18.22 +19 59 34.3 18.9 c 704
2011-01-28 04:27:11 C 02 51 20.92 +19 59 40.1 19.3 c 704
2011-01-28 04:45:46 C 02 51 23.57 +19 59 45.3 19.3 c 704
2011-01-31 19:25:21 C 03 03 52.39 +20 25 15.7 c A53
2011-01-31 19:45:52 C 03 03 55.35 +20 25 21.1 c A53
2011-01-31 20:11:25 C 03 03 58.95 +20 25 28.2 c A53
2011-02-07 01:57:50 C 03 25 11.65 +21 04 03.5 19.6 c 704
2011-02-07 02:17:16 C 03 25 14.47 +21 04 06.6 20.1 c 704
2011-02-07 02:35:59 C 03 25 16.87 +21 04 08.5 20.0 c 704
2011-02-07 02:54:12 C 03 25 19.40 +21 04 16.7 20.1 c 704
2011-02-07 03:12:32 C 03 25 22.06 +21 04 19.3 19.3 c 704
2011-02-08 01:48:32 C 03 28 31.66 +21 09 31.5 19.0 c 704
2011-02-08 02:06:25 C 03 28 34.11 +21 09 35.4 18.9 c 704
2011-02-08 02:25:35 C 03 28 36.75 +21 09 39.6 18.7 c 704
2011-02-08 02:43:44 C 03 28 39.25 +21 09 43.8 18.6 c 704
2011-02-08 03:03:12 C 03 28 41.91 +21 09 48.2 18.5 c 704
2011-02-23 03:00:52 C 04 17 20.22 +22 11 09.8 r 703
2011-02-23 03:11:43 C 04 17 21.69 +22 11 11.4 r 703
2011-02-23 03:22:38 C 04 17 23.17 +22 11 13.3 r 703
2011-03-01 04:04:29 C 04 36 01.26 +22 25 03.2 r 703
2011-03-01 04:15:17 C 04 36 02.70 +22 25 03.2 r 703
2011-03-01 04:26:10 C 04 36 03.99 +22 25 03.9 r 703
2011-03-09 02:35:57 C 04 59 47.27 +22 34 28.6 19.6 c 704
2011-03-09 02:53:45 C 04 59 49.46 +22 34 29.8 19.4 c 704
2011-03-09 03:11:00 C 04 59 51.48 +22 34 30.3 19.2 c 704
2011-03-09 03:27:24 C 04 59 53.50 +22 34 30.7 19.7 c 704
2012-01-06 15:01:39 C 13 30 09.531 -15 04 41.08 L F51
2012-01-06 15:09:18 C 13 30 09.709 -15 04 42.64 L F51
2012-01-06 15:16:53 C 13 30 09.896 -15 04 44.35 L F51
2012-01-06 15:24:30 C 13 30 10.066 -15 04 45.96 L F51
2012-04-01 07:30:23 C 13 10 34.50 -15 39 51.1 r G96
2012-04-01 07:40:20 C 13 10 34.10 -15 39 48.9 r G96