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
2015-12-24 07:12:07 C 06 29 56.31 +08 15 41.9 u H21
2015-12-24 07:14:04 C 06 29 55.94 +08 15 50.8 u H21
2015-12-30 11:38:49 C 06 06 48.34 +17 32 02.0 u Q60
2015-12-30 11:52:06 C 06 06 46.56 +17 32 42.4 u Q60
2015-12-30 12:05:27 C 06 06 44.65 +17 33 25.9 u Q60
2016-01-01 08:31:37 C 06 01 03.05 +19 43 36.9 q 703
2016-01-01 08:38:06 C 06 01 02.20 +19 43 55.1 q 703
2016-01-01 08:44:35 C 06 01 01.44 +19 44 12.9 q 703
2016-01-01 08:53:14 C 06 01 00.32 +19 44 36.9 q 703
2016-01-03 06:15:42 C 05 55 46.19 +21 43 24.8 q H45
2016-01-03 06:17:30 C 05 55 45.97 +21 43 29.3 q H45
2016-01-03 06:18:45 C 05 55 45.83 +21 43 32.3 q H45
2016-01-03 06:20:32 C 05 55 45.62 +21 43 36.5 q H45
2016-01-03 06:21:52 C 05 55 45.48 +21 43 40.2 q H45
2016-01-03 06:23:16 C 05 55 45.32 +21 43 43.6 q H45
2016-01-04 07:21:25 C 05 53 06.93 +22 43 28.6 L T05
2016-01-04 07:45:53 C 05 53 04.26 +22 44 25.7 L T05
2016-01-04 08:10:10 C 05 53 01.62 +22 45 21.6 L T05
2016-01-04 08:34:40 C 05 52 59.02 +22 46 18.8 L T05
2016-01-10 05:34:36 C 05 40 47.43 +27 19 08.8 R G45
2016-01-10 05:36:56 C 05 40 47.28 +27 19 12.3 R G45
2016-01-10 05:41:01 C 05 40 46.96 +27 19 18.6 R G45
2016-01-10 05:42:39 C 05 40 46.82 +27 19 21.5 R G45
2016-01-10 05:47:33 C 05 40 46.45 +27 19 29.1 R G45
2016-01-10 05:48:43 C 05 40 46.37 +27 19 30.9 R G45
2016-01-10 05:54:00 C 05 40 45.96 +27 19 39.5 R G45
2016-01-10 05:55:14 C 05 40 45.88 +27 19 41.4 R G45
2016-01-10 06:00:31 C 05 40 45.48 +27 19 50.0 R G45
2016-01-10 06:00:45 C 05 40 45.46 +27 19 50.3 R G45
2016-01-10 06:37:47 C 05 40 42.62 +27 20 48.3 R G45
2016-01-13 05:05:47 C 05 36 14.46 +29 04 31.7 R G45
2016-01-13 05:08:25 C 05 36 14.29 +29 04 35.1 R G45
2016-01-13 05:09:25 C 05 36 14.23 +29 04 36.5 R G45
2016-01-13 05:15:03 C 05 36 13.86 +29 04 44.1 R G45
2016-01-13 05:21:07 C 05 36 13.52 +29 04 52.0 R G45
2016-01-13 05:26:07 C 05 36 13.20 +29 04 59.0 R G45
2016-01-13 05:28:00 C 05 36 13.10 +29 05 01.5 R G45
2016-01-16 22:06:53 C 05 31 54.60 +30 52 19.0 q 160
2016-01-16 22:09:41 C 05 31 54.47 +30 52 21.6 q 160
2016-01-16 22:12:31 C 05 31 54.31 +30 52 24.3 q 160
2016-01-17 22:45:08 C 05 30 57.02 +31 18 18.8 q 160
2016-01-17 22:48:06 C 05 30 56.85 +31 18 22.6 q 160
2016-01-17 22:51:05 C 05 30 56.78 +31 18 25.4 q 160
2016-01-21 22:14:33 C 05 28 06.89 +32 46 12.4 q 160
2016-01-21 22:17:22 C 05 28 06.81 +32 46 14.0 q 160
2016-01-21 22:20:09 C 05 28 06.80 +32 46 16.3 q 160
2016-01-23 22:18:35 C 05 27 10.43 +33 23 43.8 q 160
2016-01-23 22:21:24 C 05 27 10.38 +33 23 46.1 q 160
2016-01-23 22:24:12 C 05 27 10.38 +33 23 48.6 q 160
2018-05-19 07:44:23 C 15 08 55.56 +32 15 26.4 U 703