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
2010-01-18 21:10:14 C 04 25 01.60 +23 11 00.9 w 160
2010-01-19 21:31:26 C 04 26 01.90 +23 50 17.0 u 160
2012-06-02 02:50:24 C 14 23 37.09 +31 25 46.3 u H21
2012-06-02 03:03:33 C 14 23 36.10 +31 25 40.5 u H21
2012-06-02 03:17:22 C 14 23 35.10 +31 25 34.1 u H21
2012-06-09 03:49:17 C 14 12 04.55 +29 54 52.4 u 448
2012-06-09 04:56:49 C 14 12 00.18 +29 54 09.4 u 448
2012-06-09 05:58:32 C 14 11 56.17 +29 53 31.6 u 448
2012-06-27 03:37:05 C 13 51 34.09 +24 12 09.0 u 448
2012-06-27 04:28:06 C 13 51 32.50 +24 11 19.9 u 448
2012-06-27 05:17:00 C 13 51 30.96 +24 10 33.4 u 448
2012-11-28 08:02:12 C 09 45 55.33 -72 19 09.8 u 807
2012-11-28 08:05:29 C 09 45 52.04 -72 19 04.3 u 807
2012-11-28 08:08:45 C 09 45 48.72 -72 18 58.8 u 807
2012-11-28 08:12:02 C 09 45 45.45 -72 18 53.3 u 807
2012-11-28 08:15:19 C 09 45 42.14 -72 18 47.8 u 807
2012-12-02 02:51:38 C 08 23 25.92 -68 05 37.2 u 844
2012-12-02 02:56:23 C 08 23 22.14 -68 05 18.4 u 844
2012-12-02 03:04:57 C 08 23 15.02 -68 04 45.8 u 844
2012-12-02 03:10:05 C 08 23 10.94 -68 04 26.5 u 844
2012-12-02 03:15:35 C 08 23 06.46 -68 04 05.8 u 844
2012-12-09 06:56:30 C 06 41 19.80 -51 28 46.7 u 844
2012-12-09 06:59:22 C 06 41 18.59 -51 28 24.7 u 844
2012-12-09 07:05:36 C 06 41 15.94 -51 27 37.5 u 844
2012-12-09 07:08:49 C 06 41 14.55 -51 27 12.9 u 844
2012-12-15 09:55:56 C 05 55 14.32 -30 56 31.5 q E89
2012-12-15 10:00:25 C 05 55 13.29 -30 55 53.3 q E89
2012-12-15 10:05:38 C 05 55 11.97 -30 55 06.3 q E89
2012-12-15 10:10:11 C 05 55 10.88 -30 54 27.3 q E89
2012-12-19 09:41:12 C 05 36 08.51 -17 24 42.5 q E89
2012-12-19 09:46:33 C 05 36 07.58 -17 24 00.2 q E89
2012-12-20 08:59:21 C 05 32 23.17 -14 21 19.3 q E89
2012-12-20 09:05:42 C 05 32 22.13 -14 20 30.8 q E89
2012-12-20 09:16:20 C 05 32 20.40 -14 19 09.1 q E89
2012-12-20 09:23:45 C 05 32 19.28 -14 18 13.6 q E89
2012-12-20 09:30:42 C 05 32 18.10 -14 17 19.0 q E89
2012-12-23 03:58:26 C 05 23 04.39 -06 18 24.7 u 844
2012-12-23 04:07:24 C 05 23 03.22 -06 17 24.6 u 844
2012-12-23 04:11:03 C 05 23 02.72 -06 17 00.0 u 844
2012-12-23 04:18:26 C 05 23 01.76 -06 16 10.9 u 844
2012-12-23 04:22:05 C 05 23 01.32 -06 15 46.4 u 844
2012-12-23 05:21:54 C 05 22 54.48 -06 09 47.7 q H21
2012-12-23 05:30:21 C 05 22 53.37 -06 08 51.4 q H21
2012-12-23 05:38:45 C 05 22 52.27 -06 07 55.5 q H21
2012-12-23 05:47:22 C 05 22 51.14 -06 06 57.9 q H21
2012-12-24 08:40:50 C 05 19 42.747 -03 13 26.26 L F51
2012-12-24 08:56:52 C 05 19 40.811 -03 11 46.33 L F51
2012-12-31 09:00:31 C 05 05 26.32 +10 49 47.0 q E89
2012-12-31 09:08:08 C 05 05 25.98 +10 50 13.6 q E89
2012-12-31 09:11:01 C 05 05 25.82 +10 50 25.4 q E89