138937 (2001 BK16)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6779799601 ± 2.67e-08
Semi-major axis (a)2.0723812401 AU ± 1.62e-09
Inclination (i)31.81272239° ± 7.68e-06
Long. of Asc. Node (Ω)98.82942656° ± 3.34e-06
Arg. of Perihelion (ω)252.42382053° ± 6.09e-06
Mean Anomaly (M)139.15541447° ± 2.92e-06
Mean Motion (n)0.3303754729°/day ± 3.88e-10
Perihelion dist (q)0.66734829 AU ± 5.54e-08
Aphelion dist (Q)3.47741419 AU ± 5.55e-08
Orbital Period2.98335187 yr ± 3.51e-09
Physical Parameters
H (abs. magnitude)17.80
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.809″
Uncertainty0
Orbit TypeApollo
MOID0.062171 AU
Observations Used3037
Oppositions18
Arc Total1998-2025
First Observation Used1998-01-27
Last Observation Used2025-02-25
Observations (5212)
Date Type RA Dec Mag Band Observatory
2007-01-14 04:49:19 C 03 40 05.26 +12 28 37.2 18.9 c 704
2007-01-17 02:29:51 C 03 46 09.73 +15 31 41.1 o 644
2007-01-17 02:59:15 C 03 46 12.11 +15 32 52.3 o 644
2007-01-17 03:28:42 C 03 46 14.44 +15 34 03.7 o 644
2007-01-21 03:34:13 C 03 54 11.03 +19 03 20.4 19.0 c 704
2007-01-21 03:51:49 C 03 54 12.28 +19 03 54.9 19.4 c 704
2007-01-21 04:09:20 C 03 54 13.61 +19 04 29.3 19.2 c 704
2007-01-21 04:26:55 C 03 54 15.03 +19 05 03.5 19.3 c 704
2007-01-21 04:44:34 C 03 54 16.38 +19 05 37.8 19.0 c 704
2007-01-24 03:48:42 C 03 59 56.29 +21 14 33.0 r 703
2007-01-24 03:59:38 C 03 59 57.08 +21 14 51.5 r 703
2007-01-24 04:10:36 C 03 59 57.91 +21 15 09.7 r 703
2007-01-24 04:21:34 C 03 59 58.77 +21 15 27.7 r 703
2007-02-07 02:15:08 C 04 25 23.84 +28 09 40.4 r 703
2007-02-07 02:22:51 C 04 25 24.27 +28 09 49.3 r 703
2007-02-07 02:30:34 C 04 25 24.70 +28 09 57.8 r 703
2007-02-07 02:38:19 C 04 25 25.39 +28 10 02.6 r 703
2009-12-28 20:40:07 C 04 09 16.75 -05 04 16.8 v B03
2009-12-28 20:48:05 C 04 09 16.88 -05 03 27.7 v B03
2009-12-28 20:56:14 C 04 09 17.00 -05 02 37.3 v B03
2010-01-02 20:47:43 C 04 12 10.22 +05 27 47.6 w 160
2010-01-02 20:48:50 C 04 12 10.17 +05 27 52.0 w 160
2010-01-02 20:49:49 C 04 12 10.22 +05 27 56.4 w 160
2010-01-02 20:51:05 C 04 12 10.29 +05 28 02.1 w 160
2010-01-02 20:52:09 C 04 12 10.31 +05 28 06.7 w 160
2010-01-05 17:20:48 C 04 14 03.24 +10 03 55.4 17.7 u C20
2010-01-05 23:27:34 C 04 14 12.47 +10 26 03.2 17.6 u C20
2010-01-07 17:12:52 C 04 15 28.14 +12 47 59.5 17.6 u C20
2010-01-07 17:13:59 C 04 15 28.17 +12 48 03.2 17.6 u C20
2010-01-08 03:57:36 C 04 15 47.84 +13 22 04.1 r 703
2010-01-08 04:12:29 C 04 15 48.20 +13 22 50.1 r 703
2010-01-08 04:19:56 C 04 15 48.38 +13 23 13.3 r 703
2010-01-08 17:12:51 C 04 16 12.69 +14 02 37.1 18.2 u C20
2010-01-08 17:13:57 C 04 16 12.71 +14 02 40.4 18.2 u C20
2010-01-12 05:08:15 C 04 18 58.60 +17 49 35.6 r 703
2010-01-12 05:15:48 C 04 18 58.82 +17 49 54.2 r 703
2010-01-12 05:23:22 C 04 18 59.11 +17 50 12.2 r 703
2010-01-13 03:28:23 C 04 19 46.04 +18 42 16.3 18.0 c 704
2010-01-13 03:45:36 C 04 19 46.58 +18 42 54.5 18.4 c 704
2010-01-13 04:03:08 C 04 19 47.12 +18 43 35.5 18.0 c 704
2010-01-13 04:37:55 C 04 19 48.20 +18 44 54.3 17.8 c 704
2010-01-15 06:19:01 C 04 21 36.93 +20 31 50.5 r G96
2010-01-15 06:28:24 C 04 21 37.26 +20 32 09.4 r G96
2010-01-15 06:37:58 C 04 21 37.58 +20 32 28.6 r G96
2010-01-15 06:47:30 C 04 21 37.90 +20 32 47.7 r G96
2010-01-17 19:27:58 C 04 23 59.19 +22 27 11.0 18.8 u C20
2010-01-18 18:37:05 C 04 24 55.45 +23 06 46.5 18.9 u C20
2010-01-18 18:38:12 C 04 24 55.46 +23 06 48.5 18.9 u C20
2010-01-18 21:02:27 C 04 25 01.31 +23 10 48.3 w 160
2010-01-18 21:06:21 C 04 25 01.44 +23 10 54.3 w 160