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
2018-05-19 07:59:33 C 15 08 54.13 +32 15 25.5 U 703
2018-05-19 08:07:09 C 15 08 53.44 +32 15 25.7 U 703
2018-05-24 05:46:24 C 14 58 23.98 +32 07 55.0 U G96
2018-05-24 05:53:51 C 14 58 23.31 +32 07 53.9 U G96
2018-05-24 06:01:19 C 14 58 22.61 +32 07 53.2 U G96
2018-05-24 06:08:47 C 14 58 21.93 +32 07 52.4 U G96
2018-06-07 06:24:08 C 14 29 23.43 +30 09 15.9 U G96
2018-06-07 06:31:48 C 14 29 22.81 +30 09 11.8 U G96
2018-06-07 06:39:27 C 14 29 22.19 +30 09 07.4 U G96
2018-06-07 06:47:06 C 14 29 21.56 +30 09 03.0 U G96
2018-06-09 06:37:19 C 14 25 36.56 +29 40 48.1 U 703
2018-06-09 06:44:55 C 14 25 36.07 +29 40 42.7 U 703
2018-06-09 06:52:32 C 14 25 35.48 +29 40 39.4 U 703
2018-06-09 07:00:08 C 14 25 34.83 +29 40 33.7 U 703
2018-07-10 04:18:18 C 13 49 06.56 +17 48 31.6 U G96
2018-07-10 04:26:36 C 13 49 06.39 +17 48 20.8 U G96
2018-07-10 04:34:54 C 13 49 06.21 +17 48 10.7 U G96
2018-07-10 04:43:12 C 13 49 06.00 +17 48 00.3 U G96
2018-11-25 19:44:53 S 09 22 01.09 -28 47 13.4 L C51
2018-11-25 21:19:09 S 09 21 43.60 -28 42 03.6 L C51
2018-11-25 22:53:23 S 09 21 26.11 -28 36 54.6 L C51
2018-11-26 00:27:27 S 09 21 08.62 -28 31 44.8 L C51
2018-11-26 00:27:38 S 09 21 08.61 -28 31 43.7 L C51
2018-11-26 03:35:58 S 09 20 33.59 -28 21 21.8 L C51
2018-11-28 11:08:18 C 09 10 12.33 -25 11 27.0 V 703
2018-11-28 11:15:33 C 09 10 10.94 -25 11 01.7 V 703
2018-11-28 11:22:49 C 09 10 09.47 -25 10 34.9 V 703
2018-11-28 11:30:04 C 09 10 08.10 -25 10 09.9 V 703
2018-12-03 13:29:31 C 08 46 49.08 -17 26 37.5 U T08
2018-12-03 13:33:26 C 08 46 48.30 -17 26 21.9 U T08
2018-12-03 13:34:06 C 08 46 48.16 -17 26 19.3 U T08
2018-12-03 13:57:28 C 08 46 43.46 -17 24 44.8 U T08
2018-12-03 14:14:38 C 08 46 39.96 -17 23 35.7 U T08
2018-12-04 13:26:21 C 08 42 08.60 -15 49 02.4 U T08
2018-12-04 13:39:17 C 08 42 05.98 -15 48 09.1 U T08
2018-12-04 13:52:05 C 08 42 03.33 -15 47 16.8 U T08
2018-12-04 14:04:48 C 08 42 00.76 -15 46 24.4 U T08
2018-12-06 13:37:21 C 08 32 38.68 -12 27 21.6 U T05
2018-12-06 14:04:43 C 08 32 33.05 -12 25 25.0 U T05
2018-12-06 14:19:13 C 08 32 30.06 -12 24 23.5 U T05
2018-12-08 12:43:38 C 08 23 16.12 -09 04 48.7 U T08
2018-12-08 12:55:34 C 08 23 13.64 -09 03 56.9 U T08
2018-12-08 13:07:28 C 08 23 11.16 -09 03 05.4 U T08
2018-12-10 13:02:15 C 08 13 34.54 -05 33 53.5 U T05
2018-12-10 13:07:49 C 08 13 33.39 -05 33 29.0 U T05
2018-12-10 13:14:49 C 08 13 31.91 -05 32 58.3 U T05
2018-12-10 13:20:34 C 08 13 30.73 -05 32 33.2 U T05
2018-12-10 13:26:57 C 08 13 29.39 -05 32 05.4 U T05
2018-12-10 13:40:32 C 08 13 26.56 -05 31 05.7 U T05
2018-12-10 13:46:41 C 08 13 25.28 -05 30 38.8 U T05