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
2021-11-08 01:31:35 C 21 05 17.10 +13 48 46.4 V G96
2021-11-08 01:39:47 C 21 05 18.64 +13 48 45.7 V G96
2021-11-08 01:47:57 C 21 05 20.18 +13 48 45.3 V G96
2021-11-08 01:56:07 C 21 05 21.72 +13 48 44.4 V G96
2021-11-08 02:48:41 C 21 05 31.73 +13 48 40.5 U I41
2021-11-08 02:50:43 C 21 05 32.12 +13 48 40.3 U I41
2021-11-08 03:51:16 C 21 05 43.54 +13 48 35.6 U I41
2021-11-08 04:10:32 C 21 05 47.19 +13 48 34.1 U I41
2021-11-08 04:13:59 C 21 05 47.83 +13 48 33.6 U I41
2021-11-08 04:42:10 C 21 05 53.16 +13 48 31.5 U I41
2021-11-13 01:47:27 C 21 27 53.72 +13 39 29.5 o 691
2021-11-13 02:15:27 C 21 27 58.72 +13 39 26.9 o 691
2021-11-13 02:43:27 C 21 28 03.71 +13 39 24.4 o 691
2021-11-14 01:34:45 C 21 32 14.00 +13 37 34.1 o 691
2021-11-14 02:00:45 C 21 32 18.61 +13 37 31.9 o 691
2021-11-14 02:26:45 C 21 32 23.22 +13 37 29.5 o 691
2021-12-17 03:13:33 C 23 35 44.38 +13 12 06.0 V G96
2021-12-17 03:20:57 C 23 35 45.34 +13 12 05.9 V G96
2021-12-17 03:28:21 C 23 35 46.32 +13 12 06.5 V G96
2021-12-17 03:35:44 C 23 35 47.28 +13 12 07.0 V G96
2022-01-21 05:28:07 C 01 19 25.467 +14 51 35.19 U F52
2022-01-21 05:46:33 C 01 19 27.539 +14 51 38.32 U F52
2022-01-21 06:04:58 C 01 19 29.621 +14 51 41.34 U F52
2022-03-23 02:47:55 C 04 02 08.65 +18 44 01.8 V V00
2022-03-23 02:54:54 C 04 02 09.45 +18 44 03.1 V V00
2022-03-23 03:01:54 C 04 02 10.24 +18 44 03.6 V V00
2022-03-23 03:08:53 C 04 02 11.04 +18 44 04.3 V V00