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
2020-01-29 12:39:07 C 12 06 48.75 -33 12 56.9 V T05
2020-01-29 12:59:35 C 12 06 50.09 -33 13 41.9 V T05
2020-10-11 11:11:07 C 06 54 27.68 +38 26 34.0 V G96
2020-10-11 11:17:23 C 06 54 28.03 +38 26 33.1 V G96
2020-10-11 11:23:40 C 06 54 28.39 +38 26 32.1 V G96
2020-10-11 11:29:57 C 06 54 28.73 +38 26 30.7 V G96
2020-10-22 10:29:35 C 07 07 21.14 +37 35 13.3 V G96
2020-10-22 10:37:05 C 07 07 21.37 +37 35 11.8 V G96
2020-10-22 10:44:35 C 07 07 21.62 +37 35 10.4 V G96
2020-10-22 10:52:05 C 07 07 21.86 +37 35 08.9 V G96
2020-10-28 09:13:18 C 07 11 22.72 +37 03 49.5 V G96
2020-10-28 09:21:30 C 07 11 22.84 +37 03 48.5 V G96
2020-10-28 09:29:43 C 07 11 22.99 +37 03 46.4 V G96
2020-10-28 09:37:55 C 07 11 23.09 +37 03 44.9 V G96
2020-10-29 11:50:19 C 07 11 51.56 +36 57 42.8 U I41
2020-10-29 12:17:22 C 07 11 51.89 +36 57 36.6 U I41
2020-10-29 12:22:09 C 07 11 51.96 +36 57 35.6 U I41
2020-10-29 12:29:00 C 07 11 52.04 +36 57 33.8 U I41
2020-11-09 19:58:09 C 07 11 28.12 +35 47 50.5 q D29
2020-11-09 20:38:53 C 07 11 27.00 +35 47 39.2 q D29
2020-11-11 12:25:43 C 07 10 29.256 +35 36 01.11 U F52
2020-11-11 12:43:13 C 07 10 28.685 +35 35 56.11 U F52
2020-11-11 13:00:49 C 07 10 28.107 +35 35 51.04 U F52
2020-11-11 13:34:51 C 07 10 26.976 +35 35 41.22 U F52
2020-11-13 11:47:55 C 07 08 59.534 +35 21 24.93 U F52
2020-11-13 12:04:30 C 07 08 58.862 +35 21 20.26 U F52
2020-11-13 12:37:48 C 07 08 57.499 +35 21 10.02 U F52
2020-11-21 06:53:01 C 06 59 20.06 +34 13 58.8 V 703
2020-11-21 07:00:50 C 06 59 19.62 +34 13 55.0 V 703
2020-11-21 07:08:39 C 06 59 18.99 +34 13 51.5 V 703
2020-11-21 07:16:29 C 06 59 18.47 +34 13 47.1 V 703
2020-11-22 11:05:54 C 06 57 19.67 +34 02 07.5 V G96
2020-11-22 11:13:17 C 06 57 19.10 +34 02 04.1 V G96
2020-11-22 11:20:41 C 06 57 18.50 +34 02 00.6 V G96
2020-11-22 11:28:04 C 06 57 17.95 +34 01 57.4 V G96
2020-11-24 08:33:41 C 06 53 50.83 +33 41 47.1 V 703
2020-11-24 08:41:26 C 06 53 50.27 +33 41 44.7 V 703
2020-11-24 08:49:10 C 06 53 49.56 +33 41 40.5 V 703
2020-11-24 08:56:55 C 06 53 48.84 +33 41 37.1 V 703
2020-11-28 09:28:02 C 06 45 14.56 +32 53 04.3 V T08
2020-11-28 09:32:41 C 06 45 14.07 +32 53 01.1 V T08
2020-11-28 09:41:58 C 06 45 13.13 +32 52 55.7 V T08
2020-11-28 10:05:55 C 06 45 10.65 +32 52 43.9 V T08
2020-11-30 02:41:24 C 06 41 05.49 +32 29 41.5 V 160
2020-11-30 02:44:47 C 06 41 05.03 +32 29 38.5 V 160
2020-12-06 11:56:03 C 06 23 39.06 +30 48 23.9 V T08
2020-12-06 12:00:42 C 06 23 38.43 +30 48 20.2 V T08
2020-12-06 12:46:59 C 06 23 32.44 +30 47 45.6 V T08
2020-12-06 12:49:40 C 06 23 32.12 +30 47 43.6 V T08
2020-12-06 13:40:23 C 06 23 25.58 +30 47 05.3 V T08