85867 (1999 BY9)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3021932844 ± 3.49e-08
Semi-major axis (a)1.8299259884 AU ± 2.98e-09
Inclination (i)0.94551739° ± 1.76e-06
Long. of Asc. Node (Ω)254.11835193° ± 1.61e-04
Arg. of Perihelion (ω)287.83634413° ± 1.61e-04
Mean Anomaly (M)263.14966918° ± 1.01e-05
Mean Motion (n)0.3981639981°/day ± 9.74e-10
Perihelion dist (q)1.27693464 AU ± 6.39e-08
Aphelion dist (Q)2.38291733 AU ± 6.39e-08
Orbital Period2.47542793 yr ± 6.05e-09
Physical Parameters
H (abs. magnitude)18.32
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.407″
Uncertainty0
Orbit TypeAmor
MOID0.280323 AU
Observations Used753
Oppositions18
Arc Total1995-2025
First Observation Used1995-09-19
Last Observation Used2025-12-16
Observations (789)
Date Type RA Dec Mag Band Observatory
1995-09-19 10:10:24 C 01 18 32.91 +09 48 24.0 i 691
1995-09-19 10:52:14 C 01 18 31.23 +09 48 14.0 i 691
1995-09-19 11:33:44 C 01 18 29.55 +09 48 05.0 i 691
1995-09-24 10:40:35 C 01 13 30.04 +09 18 49.6 i 691
1995-09-24 11:11:01 C 01 13 28.64 +09 18 41.3 i 691
1995-09-24 11:41:25 C 01 13 27.27 +09 18 33.5 i 691
1999-01-22 19:43:39 C 07 00 38.51 +20 53 42.7 18.2 b 120
1999-01-22 20:12:14 C 07 00 36.86 +20 53 43.2 b 120
1999-01-23 18:54:31 C 06 59 23.69 +20 54 18.3 18.4 b 120
1999-01-23 19:09:48 C 06 59 22.83 +20 54 18.1 b 120
1999-01-24 18:07:04 C 06 58 10.44 +20 54 52.0 18.5 b 120
1999-01-24 18:41:37 C 06 58 08.43 +20 54 52.2 b 120
1999-01-24 19:18:02 C 06 58 06.47 +20 54 53.7 b 120
1999-01-25 18:10:30 C 06 56 56.19 +20 55 24.8 18.4 b 120
1999-01-25 18:14:04 C 06 56 56.04 +20 55 24.6 b 120
1999-01-25 18:23:44 C 06 56 55.39 +20 55 24.7 b 120
1999-01-25 18:36:13 C 06 56 54.85 +20 55 25.5 b 120
1999-02-02 17:49:14 C 06 48 33.90 +20 58 21.6 z 104
1999-02-02 17:55:59 C 06 48 33.64 +20 58 21.6 z 104
1999-02-02 18:02:59 C 06 48 33.37 +20 58 21.9 z 104
1999-02-04 12:44:43 C 06 47 06.67 +20 58 44.3 z 402
1999-02-04 12:46:42 C 06 47 06.61 +20 58 44.5 z 402
1999-02-04 12:48:42 C 06 47 06.53 +20 58 44.5 z 402
1999-02-04 12:50:43 C 06 47 06.45 +20 58 45.0 z 402
1999-02-05 18:47:00 C 06 46 13.17 +20 58 49.8 18.5 b 120
1999-02-05 18:57:11 C 06 46 12.66 +20 58 49.9 b 120
1999-02-05 19:20:58 C 06 46 12.17 +20 58 48.7 b 120
1999-02-05 19:36:51 C 06 46 11.49 +20 58 49.5 b 120
1999-02-05 19:51:46 C 06 46 10.90 +20 58 49.9 b 120
1999-02-06 18:05:47 C 06 45 35.09 +20 58 55.5 18.7 b 120
1999-02-06 18:22:20 C 06 45 34.48 +20 58 54.6 046
1999-02-06 18:23:51 C 06 45 34.43 +20 58 54.8 046
1999-02-06 18:25:31 C 06 45 34.37 +20 58 55.2 046
1999-02-06 18:35:07 C 06 45 34.08 +20 58 55.2 046
1999-02-06 18:37:26 C 06 45 34.06 +20 58 54.8 046
1999-02-06 18:41:26 C 06 45 34.00 +20 58 55.6 b 120
1999-02-06 19:15:10 C 06 45 33.01 +20 58 56.1 b 120
1999-02-12 19:31:16 C 06 42 56.26 +20 58 43.2 18.6 b 120
1999-02-12 20:37:01 C 06 42 55.37 +20 58 42.7 b 120
1999-02-12 20:41:15 C 06 42 55.27 +20 58 41.7 b 120
1999-02-19 10:49:34 C 06 42 50.59 +20 57 04.6 z 402
1999-02-19 10:56:49 C 06 42 50.64 +20 57 04.5 z 402
1999-02-19 11:08:31 C 06 42 50.67 +20 57 04.3 z 402
1999-03-12 19:39:32 C 07 02 00.34 +20 35 04.8 d 046
1999-03-12 19:41:32 C 07 02 00.52 +20 35 05.2 d 046
1999-03-12 19:43:09 C 07 02 00.62 +20 35 05.6 d 046
1999-03-12 19:44:49 C 07 02 00.70 +20 35 05.3 d 046
1999-03-12 21:57:06 C 07 02 08.74 +20 34 52.0 118
1999-03-12 22:06:19 C 07 02 09.31 +20 34 51.1 118
1999-03-12 23:10:31 C 07 02 13.43 +20 34 44.9 118