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
1998-01-27 05:16:30 C 02 42 00.30 +07 35 14.4 d 566
1998-01-27 05:30:46 C 02 42 02.56 +07 35 51.6 d 566
1998-01-27 05:46:28 C 02 42 05.01 +07 36 30.8 d 566
2001-01-19 01:59:00 C 02 39 37.15 +04 16 18.5 18.7 c 704
2001-01-19 02:21:11 C 02 39 40.69 +04 17 27.2 19.6 c 704
2001-01-19 02:42:50 C 02 39 44.23 +04 18 35.4 18.8 c 704
2001-01-19 03:04:57 C 02 39 47.74 +04 19 44.2 19.8 c 704
2001-01-19 03:27:33 C 02 39 51.31 +04 20 54.8 19.0 c 704
2001-01-20 01:45:50 C 02 43 27.22 +05 28 59.3 18.8 c 704
2001-01-20 02:07:22 C 02 43 30.53 +05 30 03.3 19.3 c 704
2001-01-20 02:50:32 C 02 43 37.29 +05 32 13.1 19.1 c 704
2001-01-20 03:12:04 C 02 43 40.66 +05 33 16.5 19.2 c 704
2001-01-21 01:42:23 C 02 47 13.11 +06 39 16.2 18.5 c 704
2001-01-21 01:46:35 C 02 47 13.62 +06 39 27.6 18.6 c 704
2001-01-21 02:06:59 C 02 47 16.78 +06 40 27.4 18.6 c 704
2001-01-21 02:08:02 C 02 47 16.91 +06 40 29.4 19.0 c 704
2001-01-21 02:29:29 C 02 47 20.13 +06 41 31.3 19.4 c 704
2001-01-21 02:30:13 C 02 47 20.25 +06 41 33.0 18.4 c 704
2001-01-21 02:50:57 C 02 47 23.54 +06 42 32.7 19.3 c 704
2001-01-21 02:51:57 C 02 47 23.54 +06 42 36.3 18.6 c 704
2001-01-21 03:12:25 C 02 47 26.66 +06 43 36.2 19.4 c 704
2001-01-21 03:14:12 C 02 47 26.94 +06 43 39.3 19.1 c 704
2001-01-21 19:01:16 C 02 49 52.79 +07 28 17.8 587
2001-01-21 19:06:42 C 02 49 53.55 +07 28 31.4 587
2001-01-22 19:18:09 C 02 53 32.37 +08 34 38.8 046
2001-01-22 19:21:19 C 02 53 32.73 +08 34 47.3 046
2001-01-30 21:10:15 C 03 20 09.83 +15 55 26.8 587
2001-01-30 21:15:50 C 03 20 10.57 +15 55 38.2 587
2001-02-04 11:03:04 C 03 33 40.62 +19 07 36.5 413
2001-02-04 11:07:02 C 03 33 41.11 +19 07 42.8 413
2001-02-04 11:08:57 C 03 33 41.34 +19 07 46.6 413
2001-02-04 11:10:55 C 03 33 41.56 +19 07 49.3 413
2001-02-04 11:12:55 C 03 33 41.74 +19 07 52.1 413
2001-02-15 18:10:10 C 04 03 52.54 +24 56 43.1 557
2001-02-15 18:16:44 C 04 03 53.17 +24 56 49.0 557
2001-04-19 07:35:04 C 06 22 39.98 +35 20 28.0 568
2001-04-19 07:38:09 C 06 22 40.29 +35 20 28.1 568
2002-04-09 22:22:22 C 11 22 22.69 +45 06 11.1 d 493
2002-04-09 22:27:13 C 11 22 22.45 +45 06 10.7 d 493
2002-04-09 22:32:59 C 11 22 22.24 +45 06 10.0 d 493
2003-11-16 10:24:51 C 17 48 47.49 -52 40 08.5 r 413
2003-11-16 10:30:40 C 17 48 48.85 -52 40 19.3 r 413
2003-12-27 10:54:50 C 01 32 40.07 -31 29 18.8 c 474
2003-12-27 10:59:00 C 01 32 41.34 -31 28 52.8 c 474
2003-12-27 11:05:40 C 01 32 43.40 -31 28 11.0 c 474
2004-01-01 11:32:28 C 02 05 24.94 -19 08 25.1 r E14
2004-01-01 12:11:38 C 02 05 33.98 -19 04 33.3 r E14
2004-01-01 12:48:50 C 02 05 42.58 -19 00 54.1 r E14
2004-01-03 01:53:45 C 02 14 08.13 -15 27 36.1 17.2 c 704
2004-01-03 02:30:45 C 02 14 15.98 -15 24 07.6 17.9 c 704