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
2015-12-31 07:14:09 C 01 42 58.169 +11 07 14.04 L F51
2017-08-17 11:39:40 C 23 26 29.299 -01 52 52.64 L F51
2017-08-17 11:55:36 C 23 26 28.632 -01 52 56.46 L F51
2017-08-17 12:11:31 C 23 26 27.970 -01 53 00.46 L F51
2017-08-28 10:24:23 C 23 14 47.58 -03 04 07.8 q G96
2017-08-28 10:41:25 C 23 14 46.78 -03 04 12.4 q G96
2017-08-28 10:49:54 C 23 14 46.29 -03 04 15.7 q G96
2017-09-02 09:43:51 C 23 08 55.24 -03 40 38.8 q G96
2017-09-02 09:53:05 C 23 08 54.77 -03 40 41.2 q G96
2017-09-02 09:59:08 C 23 08 54.45 -03 40 43.8 q G96
2017-09-02 10:06:20 C 23 08 54.15 -03 40 45.6 q G96
2017-09-22 08:02:37 C 22 45 52.962 -06 06 49.40 L F51
2017-09-22 08:36:52 C 22 45 51.473 -06 06 58.80 L F51
2017-09-22 08:54:02 C 22 45 50.696 -06 07 03.53 L F51
2018-12-14 12:35:34 C 11 58 04.25 -00 54 18.5 V G96
2018-12-14 12:43:43 C 11 58 05.24 -00 54 25.7 V G96
2018-12-14 12:51:52 C 11 58 06.22 -00 54 32.2 V G96
2018-12-14 13:00:02 C 11 58 07.21 -00 54 39.3 V G96
2019-01-15 15:29:28 C 13 36 58.662 -11 34 24.65 U F52
2019-01-15 15:38:49 C 13 36 59.880 -11 34 31.84 U F52
2019-01-15 15:48:04 C 13 37 01.081 -11 34 39.35 U F52
2019-01-15 15:57:23 C 13 37 02.292 -11 34 46.57 U F52
2019-02-05 15:12:08 C 14 44 35.749 -17 31 29.77 U F52
2019-02-05 15:25:08 C 14 44 37.489 -17 31 37.57 U F52
2019-02-05 15:38:06 C 14 44 39.174 -17 31 45.81 U F52
2019-02-05 15:51:03 C 14 44 40.862 -17 31 53.61 U F52
2019-05-29 01:39:03 C 17 28 48.31 -23 21 09.8 V C95
2019-05-29 01:45:02 C 17 28 47.93 -23 21 09.3 V C95
2019-05-29 01:57:00 C 17 28 47.32 -23 21 08.2 V C95
2019-06-24 00:42:08 C 16 58 51.11 -22 12 06.7 V A16
2019-06-24 01:26:11 C 16 58 49.59 -22 12 05.3 V A16
2019-06-24 06:25:50 C 16 58 39.91 -22 11 35.1 U I41
2019-06-24 06:40:20 C 16 58 39.37 -22 11 33.3 U I41
2019-06-24 06:50:18 C 16 58 39.00 -22 11 32.2 U I41
2019-06-24 06:56:28 C 16 58 38.77 -22 11 31.7 U I41
2019-06-24 07:15:43 C 16 58 38.06 -22 11 29.9 U I41
2019-06-24 07:31:56 C 16 58 37.45 -22 11 28.5 U I41
2019-06-25 09:05:20 C 16 57 47.99 -22 09 06.8 V T08
2019-06-25 09:11:07 C 16 57 47.89 -22 09 08.0 V T08
2019-06-25 09:19:08 C 16 57 47.62 -22 09 08.0 V T08
2019-06-25 09:35:34 C 16 57 46.97 -22 09 05.4 V T08
2019-06-27 09:49:06 C 16 56 21.10 -22 05 01.7 V T05
2019-06-27 09:54:22 C 16 56 20.90 -22 05 00.2 V T05
2019-06-27 10:02:21 C 16 56 20.68 -22 04 59.5 V T05
2019-06-27 10:16:51 C 16 56 20.22 -22 04 58.5 V T05
2019-06-29 06:04:25 C 16 55 11.66 -22 01 36.7 U I41
2019-06-29 06:27:07 C 16 55 11.03 -22 01 35.0 U I41
2019-06-29 06:35:40 C 16 55 10.80 -22 01 34.2 U I41
2019-06-29 06:41:49 C 16 55 10.62 -22 01 33.7 U I41
2019-06-29 07:05:28 C 16 55 09.96 -22 01 31.9 U I41