2004 BY21

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4766070129 ± 7.12e-08
Semi-major axis (a)2.4177237186 AU ± 9.35e-09
Inclination (i)6.55734904° ± 1.00e-05
Long. of Asc. Node (Ω)40.25802343° ± 1.32e-04
Arg. of Perihelion (ω)155.41698481° ± 1.34e-04
Mean Anomaly (M)257.68766673° ± 1.63e-05
Mean Motion (n)0.2621816363°/day ± 1.52e-09
Perihelion dist (q)1.26541964 AU ± 1.72e-07
Aphelion dist (Q)3.57002780 AU ± 1.73e-07
Orbital Period3.75932616 yr ± 2.18e-08
Physical Parameters
H (abs. magnitude)18.94
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.407″
Uncertainty0
Orbit TypeAmor
MOID0.268184 AU
Observations Used59
Oppositions14
Arc Total2004-2023
First Observation Used2004-01-19
Last Observation Used2023-02-02
Observations (61)
Date Type RA Dec Mag Band Observatory
2004-01-19 06:36:00 C 07 48 59.56 +35 48 04.4 19.8 c 704
2004-01-19 07:12:34 C 07 48 57.13 +35 48 16.7 19.8 c 704
2004-01-19 07:31:12 C 07 48 56.13 +35 48 21.8 20.2 c 704
2004-01-19 07:49:37 C 07 48 54.87 +35 48 28.8 20.3 c 704
2004-01-20 06:25:30 C 07 47 32.95 +35 55 44.0 c 673
2004-01-20 06:31:00 C 07 47 32.59 +35 55 45.8 c 673
2004-01-20 06:48:29 C 07 47 31.44 +35 55 51.5 c 673
2004-01-20 07:03:10 C 07 47 30.47 +35 55 56.6 c 673
2004-01-20 22:01:05 C 07 46 35.90 +36 00 35.8 r 938
2004-01-21 05:04:11 C 07 46 09.44 +36 02 44.4 r H88
2004-01-21 05:19:45 C 07 46 08.38 +36 02 50.1 r H88
2004-01-21 06:27:44 C 07 46 04.62 +36 03 09.5 c 711
2004-01-21 06:46:14 C 07 46 03.41 +36 03 17.2 c 711
2004-01-21 07:04:57 C 07 46 01.87 +36 03 23.0 c 711
2004-01-22 06:52:43 C 07 44 33.71 +36 10 28.4 20.2 c 704
2004-01-22 07:11:26 C 07 44 32.45 +36 10 32.5 20.1 c 704
2004-01-22 07:29:51 C 07 44 31.34 +36 10 38.0 20.3 c 704
2004-01-22 08:07:08 C 07 44 28.87 +36 10 48.4 20.4 c 704
2004-02-10 04:15:41 C 07 18 28.40 +37 18 49.4 c 926
2004-02-10 04:21:13 C 07 18 28.12 +37 18 49.2 c 926
2004-02-10 04:26:44 C 07 18 27.84 +37 18 49.3 c 926
2004-03-10 21:31:20 C 07 13 18.56 +35 11 52.7 r 540
2004-03-10 21:53:00 C 07 13 19.38 +35 11 46.9 r 540
2004-04-16 04:57:29 C 08 17 16.91 +28 21 22.6 o 696
2004-04-16 05:07:22 C 08 17 17.92 +28 21 16.5 o 696
2004-05-24 04:36:57 C 10 07 00.88 +15 04 34.1 o 696
2004-05-24 04:44:22 C 10 07 01.82 +15 04 25.3 o 696
2008-05-04 14:59:20 C 19 11 59.47 -29 04 42.6 o 474
2008-05-04 15:02:30 C 19 11 59.58 -29 04 43.5 o 474
2008-05-04 15:05:19 C 19 11 59.67 -29 04 44.7 o 474
2008-05-04 15:08:00 C 19 11 59.75 -29 04 46.0 o 474
2008-05-04 15:21:40 C 19 12 00.23 -29 04 51.2 o 474
2008-05-05 14:41:59 C 19 12 49.14 -29 13 42.9 o 474
2008-05-05 14:45:00 C 19 12 49.25 -29 13 43.8 o 474
2008-05-05 14:47:59 C 19 12 49.34 -29 13 45.2 o 474
2008-05-05 14:51:19 C 19 12 49.45 -29 13 46.2 o 474
2014-11-29 10:00:03 C 04 28 55.25 +26 51 03.4 q G96
2014-11-29 10:05:41 C 04 28 54.94 +26 51 03.5 q G96
2014-11-29 10:11:18 C 04 28 54.57 +26 51 03.3 q G96
2014-11-29 10:16:55 C 04 28 54.27 +26 51 03.1 q G96
2018-11-14 07:52:59 C 07 12 15.80 +29 15 25.1 u H21
2018-11-14 08:05:33 C 07 12 15.95 +29 15 27.7 u H21
2018-11-14 08:26:34 C 07 12 16.18 +29 15 32.0 u H21
2018-12-17 13:56:37 C 07 00 16.212 +32 42 36.94 U F51
2018-12-17 14:14:22 C 07 00 15.388 +32 42 42.00 U F51
2018-12-17 14:32:06 C 07 00 14.551 +32 42 47.18 U F51
2019-01-04 05:35:30 C 06 36 01.36 +34 33 56.5 V G96
2019-01-04 05:53:18 C 06 36 00.11 +34 34 00.3 V G96
2019-01-04 06:01:29 C 06 35 59.54 +34 34 02.1 V G96
2019-01-04 06:09:03 C 06 35 59.04 +34 34 03.8 V G96