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
2009-04-21 20:32:57 C 12 16 32.42 -04 56 03.7 17.7 r C20
2009-04-22 21:33:54 C 12 17 22.02 -04 57 37.6 18.3 r C20
2009-04-23 19:58:31 C 12 18 09.04 -04 59 13.1 17.8 r C20
2009-04-24 06:58:26 C 12 18 32.08 -05 00 00.1 17.7 c 704
2009-04-24 07:13:50 C 12 18 32.57 -05 00 01.3 18.0 c 704
2009-04-24 07:29:29 C 12 18 33.11 -05 00 02.2 17.6 c 704
2009-04-24 07:50:10 C 12 18 33.70 -05 00 04.2 17.3 c 704
2009-04-24 08:06:26 C 12 18 34.24 -05 00 04.9 17.4 c 704
2009-04-26 20:08:30 C 12 20 50.42 -05 05 32.8 18.1 r C20
2009-04-30 04:46:59 C 12 24 12.06 -05 14 48.8 17.6 c 704
2009-04-30 05:05:41 C 12 24 12.77 -05 14 51.3 17.7 c 704
2009-04-30 05:20:31 C 12 24 13.24 -05 14 51.2 18.5 c 704
2009-04-30 05:50:21 C 12 24 14.46 -05 14 57.2 17.7 c 704
2009-05-01 21:36:31 C 12 26 01.22 -05 20 30.6 18.2 r C20
2009-05-15 14:13:15 C 12 43 39.90 -06 26 12.7 r E12
2009-05-15 14:30:03 C 12 43 40.85 -06 26 16.9 r E12
2009-05-15 14:47:37 C 12 43 41.84 -06 26 21.3 r E12
2009-05-15 15:04:40 C 12 43 42.81 -06 26 25.3 r E12
2009-05-27 20:48:57 C 13 02 56.95 -07 52 04.3 o B88
2009-05-27 21:13:58 C 13 02 58.61 -07 52 11.7 o B88
2009-05-31 04:22:18 C 13 08 35.73 -08 18 26.2 r 703
2009-05-31 04:30:12 C 13 08 36.24 -08 18 28.2 r 703
2009-05-31 04:37:53 C 13 08 36.74 -08 18 31.5 r 703
2009-05-31 04:45:42 C 13 08 37.32 -08 18 33.5 r 703
2010-10-31 04:32:01 C 01 50 44.88 +12 34 26.7 r G96
2010-10-31 04:43:07 C 01 50 44.19 +12 34 23.0 r G96
2010-10-31 04:54:13 C 01 50 43.65 +12 34 19.4 r G96
2010-10-31 05:05:15 C 01 50 43.00 +12 34 16.5 r G96
2010-11-07 06:12:02 C 01 41 55.21 +11 41 49.5 r G96
2010-11-07 06:21:11 C 01 41 54.74 +11 41 46.7 r G96
2010-11-07 06:30:29 C 01 41 54.24 +11 41 44.0 r G96
2010-11-07 06:39:42 C 01 41 53.77 +11 41 40.9 r G96
2010-11-10 05:42:06 C 01 38 26.84 +11 20 27.2 r G96
2010-11-10 05:51:10 C 01 38 26.34 +11 20 24.0 r G96
2010-11-10 06:00:13 C 01 38 25.94 +11 20 21.7 r G96
2010-11-10 06:09:14 C 01 38 25.44 +11 20 18.9 r G96
2010-11-27 03:41:43 C 01 23 20.32 +09 41 27.6 r G96
2010-11-27 03:54:15 C 01 23 20.00 +09 41 25.3 r G96
2010-11-27 04:06:48 C 01 23 19.64 +09 41 23.0 r G96
2012-08-25 08:08:45 C 22 51 20.84 -05 29 40.2 r G96
2012-08-25 08:24:55 C 22 51 19.98 -05 29 45.6 r G96
2012-08-25 08:41:03 C 22 51 19.11 -05 29 50.2 r G96
2012-08-25 08:57:12 C 22 51 18.28 -05 29 55.2 r G96
2013-11-05 14:25:32 C 09 30 28.253 +14 13 00.60 L F51
2013-11-05 14:33:38 C 09 30 29.103 +14 12 56.07 L F51
2013-11-05 14:41:42 C 09 30 29.943 +14 12 51.84 L F51
2013-11-05 14:49:47 C 09 30 30.771 +14 12 47.44 L F51
2014-01-02 11:07:38 C 12 00 00.50 -01 34 36.0 q G96
2014-01-02 11:16:29 C 12 00 01.49 -01 34 43.0 q G96
2014-01-02 11:25:19 C 12 00 02.46 -01 34 50.1 q G96