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
2009-01-26 08:38:42 C 11 28 24.28 +00 42 32.4 18.4 c 704
2009-01-26 08:55:38 C 11 28 25.19 +00 42 24.0 18.5 c 704
2009-01-28 09:25:56 C 11 31 13.16 +00 18 48.1 18.2 c 704
2009-01-28 09:43:50 C 11 31 14.08 +00 18 39.7 18.3 c 704
2009-01-28 10:01:33 C 11 31 15.02 +00 18 31.3 18.1 c 704
2009-01-28 10:19:18 C 11 31 15.94 +00 18 22.5 18.2 c 704
2009-01-28 10:37:12 C 11 31 16.87 +00 18 14.0 18.4 c 704
2009-01-31 09:57:42 C 11 35 13.70 -00 15 33.1 r G96
2009-01-31 10:05:32 C 11 35 14.10 -00 15 36.6 r G96
2009-01-31 10:13:28 C 11 35 14.49 -00 15 40.3 r G96
2009-01-31 10:21:27 C 11 35 14.85 -00 15 44.1 r G96
2009-02-05 07:58:40 C 11 41 17.05 -01 08 43.4 18.4 c 704
2009-02-05 08:15:47 C 11 41 17.78 -01 08 50.0 18.7 c 704
2009-02-05 08:32:53 C 11 41 18.59 -01 08 57.4 18.7 c 704
2009-02-05 08:50:04 C 11 41 19.28 -01 09 05.2 18.7 c 704
2009-02-05 09:07:17 C 11 41 20.06 -01 09 12.2 18.4 c 704
2009-02-16 07:31:22 C 11 52 26.08 -02 52 10.8 o 691
2009-02-16 07:57:25 C 11 52 26.87 -02 52 19.8 o 691
2009-02-16 08:23:28 C 11 52 27.64 -02 52 28.7 o 691
2009-02-19 06:04:59 C 11 54 47.56 -03 14 59.9 r 808
2009-02-19 06:14:30 C 11 54 47.77 -03 15 03.1 r 808
2009-02-19 06:24:29 C 11 54 47.97 -03 15 05.8 r 808
2009-02-19 08:00:15 C 11 54 51.46 -03 16 02.5 19.0 c 704
2009-02-19 08:17:00 C 11 54 51.85 -03 16 08.3 19.2 c 704
2009-02-19 08:34:03 C 11 54 52.24 -03 16 13.8 19.1 c 704
2009-02-19 08:52:47 C 11 54 52.81 -03 16 18.8 19.2 c 704
2009-02-19 09:12:09 C 11 54 53.26 -03 16 25.3 19.0 c 704
2009-02-20 07:00:08 C 11 55 34.30 -03 23 07.7 o 691
2009-02-20 07:26:32 C 11 55 34.96 -03 23 15.8 o 691
2009-02-20 07:52:37 C 11 55 35.60 -03 23 23.7 o 691
2009-02-22 02:15:18 C 11 56 48.55 -03 35 52.5 r J75
2009-02-22 02:33:59 C 11 56 48.97 -03 35 57.6 r J75
2009-02-22 02:52:41 C 11 56 49.38 -03 36 03.3 r J75
2009-02-23 04:57:30 C 11 57 32.47 -03 42 47.2 r 808
2009-02-23 05:07:29 C 11 57 32.66 -03 42 49.9 r 808
2009-02-23 05:17:30 C 11 57 32.86 -03 42 52.6 r 808
2009-02-24 02:57:58 C 11 58 05.40 -03 49 08.3 r J75
2009-02-24 03:16:41 C 11 58 05.75 -03 49 13.4 r J75
2009-02-24 03:35:21 C 11 58 06.12 -03 49 18.2 r J75
2009-02-24 07:25:08 C 11 58 13.12 -03 50 15.3 o 691
2009-02-24 07:51:32 C 11 58 13.61 -03 50 22.2 o 691
2009-02-24 08:17:56 C 11 58 14.09 -03 50 29.1 o 691
2009-02-26 00:47:10 C 11 59 11.43 -04 00 38.0 17.0 c A77
2009-02-26 01:16:26 C 11 59 11.93 -04 00 44.7 17.1 c A77
2009-02-26 01:45:44 C 11 59 12.41 -04 00 51.6 17.0 c A77
2009-02-28 08:21:01 C 12 00 21.88 -04 13 07.4 o 691
2009-02-28 08:46:23 C 12 00 22.22 -04 13 12.9 o 691
2009-02-28 09:11:45 C 12 00 22.55 -04 13 18.4 o 691
2009-04-11 02:51:59 C 12 09 59.36 -04 50 06.3 r 808
2009-04-11 03:02:00 C 12 09 59.46 -04 50 06.2 r 808