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
2004-04-20 04:34:43 C 09 51 59.72 +10 28 44.0 d 703
2004-04-20 04:49:41 C 09 52 01.02 +10 28 35.6 d 703
2004-04-20 05:04:24 C 09 52 02.53 +10 28 30.7 d 703
2004-05-13 03:47:07 C 10 51 28.12 +05 34 11.0 19.8 c 704
2004-05-13 04:01:19 C 10 51 29.71 +05 34 00.9 20.1 c 704
2004-05-13 04:15:28 C 10 51 31.26 +05 33 52.9 19.7 c 704
2004-05-13 04:29:36 C 10 51 32.86 +05 33 43.8 20.3 c 704
2004-05-13 04:43:43 C 10 51 34.30 +05 33 35.6 20.4 c 704
2004-05-16 05:01:46 C 10 59 47.94 +04 48 48.2 19.2 c 704
2004-05-16 05:16:26 C 10 59 49.47 +04 48 37.4 19.7 c 704
2004-05-16 05:59:02 C 10 59 54.31 +04 48 10.7 19.4 c 704
2004-06-14 04:19:00 C 12 19 32.75 -02 52 18.3 o 704
2004-06-14 05:02:42 C 12 19 37.60 -02 52 49.1 o 704
2005-10-02 11:05:23 C 01 56 45.49 +13 17 42.1 r G96
2005-10-02 11:14:28 C 01 56 45.06 +13 17 40.1 r G96
2005-10-02 11:23:32 C 01 56 44.73 +13 17 37.9 r G96
2005-10-02 11:32:36 C 01 56 44.26 +13 17 36.3 r G96
2005-10-03 08:38:16 C 01 55 49.83 +13 12 43.1 r G96
2005-10-03 08:48:13 C 01 55 49.40 +13 12 40.2 r G96
2005-10-03 08:58:05 C 01 55 48.90 +13 12 38.1 r G96
2005-10-03 09:07:57 C 01 55 48.46 +13 12 35.8 r G96
2007-08-23 04:18:19 C 22 26 36.70 -07 57 47.4 o 691
2007-08-23 04:43:39 C 22 26 35.29 -07 57 55.0 o 691
2007-09-05 05:28:01 C 22 10 40.29 -09 29 29.8 r G96
2007-09-05 05:36:04 C 22 10 39.86 -09 29 31.2 r G96
2007-09-05 05:45:47 C 22 10 39.36 -09 29 34.7 r G96
2007-09-05 05:54:42 C 22 10 38.92 -09 29 37.5 r G96
2008-12-01 09:41:13 C 09 46 57.45 +12 31 54.4 20.6 c 704
2008-12-01 09:59:24 C 09 46 59.01 +12 31 44.2 20.2 c 704
2008-12-01 10:17:33 C 09 47 00.43 +12 31 33.8 20.6 c 704
2008-12-01 10:35:52 C 09 47 02.04 +12 31 25.7 20.1 c 704
2008-12-04 11:35:18 C 09 53 17.59 +11 54 55.7 r G96
2008-12-04 11:51:27 C 09 53 18.96 +11 54 47.7 r G96
2008-12-04 12:07:38 C 09 53 20.29 +11 54 39.5 r G96
2008-12-04 12:23:50 C 09 53 21.62 +11 54 31.7 r G96
2008-12-29 09:24:46 C 10 42 06.30 +06 38 11.5 o 704
2008-12-29 09:43:18 C 10 42 07.47 +06 38 02.9 o 704
2008-12-29 10:20:15 C 10 42 10.31 +06 37 40.2 o 704
2008-12-29 10:38:42 C 10 42 11.75 +06 37 30.7 o 704
2009-01-19 08:12:31 C 11 17 59.90 +02 07 49.3 18.4 c 704
2009-01-19 08:30:33 C 11 18 00.98 +02 07 40.4 18.7 c 704
2009-01-19 08:48:34 C 11 18 02.10 +02 07 31.3 18.9 c 704
2009-01-19 09:06:40 C 11 18 03.19 +02 07 20.1 19.1 c 704
2009-01-22 09:44:39 C 11 22 39.67 +01 30 00.7 19.0 c 704
2009-01-22 10:02:47 C 11 22 40.68 +01 29 52.4 18.9 c 704
2009-01-22 10:21:17 C 11 22 41.77 +01 29 42.5 19.0 c 704
2009-01-22 10:39:19 C 11 22 42.83 +01 29 33.5 19.1 c 704
2009-01-26 07:48:12 C 11 28 21.60 +00 42 57.0 17.9 c 704
2009-01-26 08:05:02 C 11 28 22.43 +00 42 48.3 18.4 c 704
2009-01-26 08:21:52 C 11 28 23.35 +00 42 40.4 18.4 c 704