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
2020-12-06 13:46:51 C 06 23 24.72 +30 46 59.5 V T08
2020-12-08 10:41:12 C 06 17 47.63 +30 12 28.4 V T05
2020-12-08 10:43:50 C 06 17 47.29 +30 12 26.0 V T05
2020-12-08 11:21:40 C 06 17 42.19 +30 11 56.4 V T05
2020-12-08 11:41:56 C 06 17 39.48 +30 11 40.3 V T05
2020-12-10 11:35:54 C 06 11 27.57 +29 32 25.0 V T08
2020-12-10 11:44:44 C 06 11 26.36 +29 32 17.6 V T08
2020-12-10 11:59:31 C 06 11 24.33 +29 32 05.1 V T08
2020-12-12 11:11:36 C 06 05 10.13 +28 51 04.2 V T05
2020-12-12 11:13:38 C 06 05 09.91 +28 51 02.6 V T05
2020-12-12 11:15:39 C 06 05 09.62 +28 51 00.8 V T05
2020-12-12 11:18:40 C 06 05 09.24 +28 50 58.5 V T05
2020-12-12 11:23:51 C 06 05 08.44 +28 50 53.8 V T05
2020-12-12 11:27:22 C 06 05 08.01 +28 50 50.8 V T05
2020-12-12 11:43:50 C 06 05 05.67 +28 50 35.8 V T05
2020-12-16 06:28:02 C 05 52 57.40 +27 25 54.3 V G96
2020-12-16 06:35:29 C 05 52 56.36 +27 25 47.1 V G96
2020-12-16 06:42:58 C 05 52 55.32 +27 25 39.9 V G96
2020-12-16 06:50:25 C 05 52 54.27 +27 25 32.7 V G96
2020-12-19 01:52:25 C 05 44 00.91 +26 19 00.3 V W34
2020-12-19 02:04:29 C 05 43 59.28 +26 18 48.4 V W34
2020-12-19 02:17:00 C 05 43 57.60 +26 18 36.3 V W34
2020-12-19 02:26:50 C 05 43 54.54 +26 18 21.9 V A16
2020-12-19 02:44:27 C 05 43 52.20 +26 18 03.4 V A16
2020-12-19 03:02:07 C 05 43 49.88 +26 17 45.1 V A16
2020-12-19 03:19:47 C 05 43 47.48 +26 17 27.2 V A16
2020-12-22 08:38:05 C 05 33 52.11 +24 58 13.0 V T08
2020-12-22 08:40:44 C 05 33 51.79 +24 58 10.4 V T08
2020-12-22 08:50:54 C 05 33 50.46 +24 57 59.9 V T08
2020-12-22 09:09:40 C 05 33 47.98 +24 57 40.6 V T08
2020-12-24 08:33:11 C 05 27 57.76 +24 08 13.3 V T05
2020-12-24 08:38:56 C 05 27 57.00 +24 08 07.0 V T05
2020-12-24 08:43:32 C 05 27 56.43 +24 08 02.0 V T05
2020-12-24 08:50:47 C 05 27 55.51 +24 07 54.7 V T05
2021-01-03 09:51:00 C 05 02 39.41 +20 03 29.2 V T08
2021-01-03 10:15:35 C 05 02 37.14 +20 03 05.6 V T08
2021-01-03 10:23:33 C 05 02 36.42 +20 02 57.2 V T08
2021-01-03 10:31:35 C 05 02 35.67 +20 02 50.0 V T08
2021-01-05 00:52:49 C 04 59 24.28 +19 26 47.2 V W46
2021-01-05 01:16:32 C 04 59 22.27 +19 26 25.4 V W46
2021-01-05 01:41:15 C 04 59 20.19 +19 26 02.8 V W46
2021-01-05 03:53:48 C 04 59 09.43 +19 24 01.4 V G96
2021-01-05 04:01:12 C 04 59 08.85 +19 23 54.6 V G96
2021-01-05 04:24:32 C 04 59 06.87 +19 23 33.6 V G96
2021-01-05 09:51:31 C 04 58 40.06 +19 18 37.3 V T05
2021-01-05 09:55:11 C 04 58 39.756 +19 18 33.82 U F52
2021-01-05 09:56:08 C 04 58 39.69 +19 18 33.3 V T05
2021-01-05 10:13:53 C 04 58 38.178 +19 18 16.35 U F52
2021-01-05 10:14:37 C 04 58 38.13 +19 18 15.2 V T05
2021-01-05 10:24:44 C 04 58 37.28 +19 18 06.6 V T05