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
2008-02-29 04:44:35 C 05 18 56.72 +08 20 59.6 20.4 c 704
2008-09-18 03:36:51 C 16 46 05.88 +24 27 12.7 r 448
2008-09-18 03:43:29 C 16 46 07.54 +24 27 17.3 r 448
2008-09-18 03:53:02 C 16 46 10.09 +24 27 26.3 r 448
2008-09-21 03:12:50 C 17 05 49.23 +25 24 38.4 r 703
2008-09-21 03:18:19 C 17 05 50.74 +25 24 41.9 r 703
2008-09-21 03:23:47 C 17 05 52.15 +25 24 46.1 r 703
2008-09-21 03:29:13 C 17 05 53.77 +25 24 49.4 r 703
2008-09-25 03:40:33 C 17 32 32.91 +26 25 27.9 r 448
2008-09-25 03:47:45 C 17 32 34.86 +26 25 31.8 r 448
2008-09-25 03:55:16 C 17 32 36.89 +26 25 36.2 r 448
2008-10-02 18:49:51 C 18 23 01.58 +27 27 07.5 r 240
2008-10-02 18:51:58 C 18 23 02.16 +27 27 08.1 r 240
2008-10-02 18:53:21 C 18 23 02.51 +27 27 08.3 r 240
2008-10-02 18:56:11 C 18 23 03.26 +27 27 08.5 r 240
2008-10-03 18:05:36 C 18 29 20.71 +27 30 03.0 v B15
2008-10-03 18:06:15 C 18 29 20.88 +27 30 03.0 v B15
2008-10-03 18:06:56 C 18 29 21.06 +27 30 02.9 v B15
2008-10-03 18:07:37 C 18 29 21.24 +27 30 02.9 v B15
2008-10-03 18:09:38 C 18 29 21.79 +27 30 02.7 v B15
2008-10-03 18:10:18 C 18 29 21.95 +27 30 03.1 v B15
2008-10-03 18:10:58 C 18 29 22.13 +27 30 03.2 v B15
2008-10-03 18:12:58 C 18 29 22.66 +27 30 03.7 v B15
2008-10-05 17:55:58 C 18 42 13.53 +27 32 52.6 r 130
2008-10-05 18:02:18 C 18 42 15.25 +27 32 53.4 r 130
2008-10-06 19:51:18 C 18 49 07.79 +27 32 38.4 c B37
2008-10-06 20:18:48 C 18 49 15.00 +27 32 37.9 c B37
2008-10-06 20:22:59 C 18 49 15.94 +27 32 37.6 c B37
2008-10-06 20:23:47 C 18 49 16.28 +27 32 36.4 c B37
2008-10-06 20:28:20 C 18 49 17.43 +27 32 35.8 c B37
2013-01-26 08:46:50 C 15 15 22.59 -34 49 25.8 u 807
2013-01-26 08:53:23 C 15 15 24.04 -34 49 31.4 u 807
2013-01-26 09:00:06 C 15 15 25.53 -34 49 38.0 u 807
2013-01-31 08:44:38 C 15 43 08.92 -36 26 36.0 u 807
2013-01-31 08:48:53 C 15 43 09.93 -36 26 39.1 u 807
2013-01-31 08:53:30 C 15 43 11.00 -36 26 42.5 u 807
2013-01-31 08:58:07 C 15 43 12.10 -36 26 45.7 u 807
2013-01-31 09:02:24 C 15 43 13.09 -36 26 48.7 u 807
2013-10-22 10:54:33 C 08 23 17.84 +23 49 39.2 q G96
2013-10-22 11:02:05 C 08 23 18.46 +23 49 35.0 q G96
2013-10-22 11:09:39 C 08 23 18.95 +23 49 30.8 q G96
2013-10-22 11:17:13 C 08 23 19.55 +23 49 26.2 q G96
2013-12-09 19:17:26 C 09 21 10.49 +10 09 21.3 q D29
2013-12-09 19:43:12 C 09 21 10.73 +10 08 59.4 q D29
2013-12-09 20:08:58 C 09 21 10.90 +10 08 36.7 q D29
2014-01-09 12:19:23 C 08 56 01.226 -02 11 37.49 L F51
2014-01-09 12:40:02 C 08 55 59.322 -02 12 00.02 L F51
2014-01-09 13:21:25 C 08 55 55.509 -02 12 45.02 L F51
2014-01-11 06:42:43 C 08 52 14.02 -02 57 46.4 q 703
2014-01-11 06:51:33 C 08 52 13.21 -02 57 56.3 q 703