138947 (2001 BA40)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2537378162 ± 2.00e+00
Semi-major axis (a)1.1189081305 AU ± 3.00e+00
Inclination (i)12.84611272° ± 4.00e+00
Long. of Asc. Node (Ω)270.86238596° ± 5.00e+00
Arg. of Perihelion (ω)0.08883628° ± 6.00e+00
Mean Anomaly (M)230.87065362° ± 2.08e-04
Mean Motion (n)0.8327614864°/day ± 3.35e+00
Perihelion dist (q)0.83499882 AU ± 3.17e+00
Aphelion dist (Q)1.40281744 AU ± 4.38e+00
Orbital Period1.18356372 yr ± 4.76e+00
NGA Modelr2
A2-8.68230348e-07 AU/d²
Physical Parameters
H (abs. magnitude)18.83
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-27
RMS Residual0.537″
Uncertainty0
Orbit TypeApollo
MOID0.182344 AU
Observations Used506
Gaia Obs Used30
Oppositions2
Arc Total2001-2015
First Observation Used2001-01-23
Last Observation Used2022-03-23
Observations (527)
Date Type RA Dec Mag Band Observatory
2001-01-23 12:37:24 C 09 16 05.15 -14 52 09.7 18.4 c 608
2001-01-23 12:52:47 C 09 16 03.48 -14 52 29.9 18.2 c 608
2001-01-23 13:07:41 C 09 16 01.88 -14 52 49.2 18.3 c 608
2001-01-24 04:27:45 C 09 14 27.45 -15 12 32.3 808
2001-01-24 04:56:40 C 09 14 24.32 -15 13 10.5 808
2001-01-24 05:38:49 C 09 14 19.70 -15 14 05.5 808
2001-01-24 06:05:50 C 09 14 17.48 -15 15 08.0 918
2001-01-24 06:08:49 C 09 14 16.39 -15 14 44.3 808
2001-01-24 06:12:15 C 09 14 16.64 -15 15 16.0 918
2001-01-24 06:24:11 C 09 14 15.38 -15 15 31.5 918
2001-01-24 06:34:39 C 09 14 13.48 -15 15 18.4 808
2001-01-24 06:47:25 C 09 14 12.83 -15 16 02.4 918
2001-01-24 11:29:40 C 09 13 42.71 -15 22 04.4 18.0 c 608
2001-01-24 11:45:31 C 09 13 40.90 -15 22 24.9 18.5 c 608
2001-01-24 12:01:42 C 09 13 39.07 -15 22 45.4 18.3 c 608
2001-01-25 14:33:58 C 09 10 46.17 -15 57 01.7 18.4 c 608
2001-01-25 14:49:04 C 09 10 44.44 -15 57 20.7 19.1 c 608
2001-01-25 15:05:56 C 09 10 42.54 -15 57 42.1 18.7 c 608
2001-01-28 12:10:26 C 09 02 46.43 -17 24 25.3 t 608
2001-01-28 12:26:02 C 09 02 44.46 -17 24 44.7 t 608
2001-01-29 08:17:13 C 09 00 21.61 -17 48 53.0 18.8 c 608
2001-01-29 08:32:55 C 09 00 19.61 -17 49 12.2 19.2 c 608
2001-01-29 08:48:33 C 09 00 17.59 -17 49 31.4 19.8 c 608
2001-01-31 21:49:26 C 08 52 34.74 -19 00 59.3 17.7 c 106
2001-01-31 22:06:14 C 08 52 32.44 -19 01 17.9 17.7 c 106
2001-01-31 22:22:52 C 08 52 30.14 -19 01 35.9 18.1 c 106
2001-02-01 00:07:47 C 08 52 15.80 -19 03 36.1 595
2001-02-01 00:12:31 C 08 52 15.21 -19 03 41.3 595
2001-02-01 00:17:36 C 08 52 14.58 -19 03 46.2 595
2001-02-01 03:43:24 C 08 51 49.40 -19 07 29.5 18.4 732
2001-02-01 03:50:11 C 08 51 48.44 -19 07 36.8 18.4 732
2001-02-01 04:59:38 C 08 51 38.96 -19 08 55.8 18.7 732
2001-02-01 05:06:25 C 08 51 38.00 -19 09 03.1 18.5 732
2001-02-01 05:13:13 C 08 51 37.07 -19 09 12.0 18.6 732
2001-02-01 07:06:05 C 08 51 21.50 -19 11 19.6 18.8 732
2001-02-01 07:12:52 C 08 51 20.49 -19 11 26.1 18.4 732
2001-02-01 07:19:39 C 08 51 19.65 -19 11 33.2 18.0 732
2001-02-01 16:22:27 C 08 50 07.678 -19 21 16.81 413
2001-02-01 16:24:24 C 08 50 07.408 -19 21 18.89 413
2001-02-01 16:26:24 C 08 50 07.148 -19 21 21.03 413
2001-02-17 07:39:31 C 07 57 09.91 -24 20 46.8 18.8 c 608
2001-02-17 07:54:14 C 07 57 07.73 -24 20 53.1 19.2 c 608
2001-02-17 08:10:29 C 07 57 05.35 -24 21 00.8 19.0 c 608
2001-02-19 13:04:59 C 07 49 48.10 -24 42 14.2 360
2001-02-19 13:08:13 C 07 49 47.65 -24 42 15.1 360
2001-02-19 13:14:17 C 07 49 46.77 -24 42 17.4 360
2001-02-20 01:42:29 C 07 48 06.27 -24 46 03.0 808
2001-02-20 02:44:30 C 07 47 57.42 -24 46 23.6 808
2001-02-22 05:21:22 C 07 41 17.55 -25 01 10.9 926
2001-02-22 05:25:26 C 07 41 17.01 -25 01 11.1 926