164221 (2004 QE20)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2054392173 ± 6.47e-08
Semi-major axis (a)1.5051678160 AU ± 3.90e-09
Inclination (i)6.48255670° ± 3.66e-06
Long. of Asc. Node (Ω)272.56314203° ± 4.34e-05
Arg. of Perihelion (ω)74.31831557° ± 4.80e-05
Mean Anomaly (M)175.80276294° ± 2.56e-05
Mean Motion (n)0.5337463165°/day ± 2.07e-09
Perihelion dist (q)1.19594732 AU ± 9.75e-08
Aphelion dist (Q)1.81438831 AU ± 9.75e-08
Orbital Period1.84661936 yr ± 7.17e-09
Physical Parameters
H (abs. magnitude)20.43
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.426″
Uncertainty0
Orbit TypeAmor
MOID0.218307 AU
Observations Used191
Oppositions9
Arc Total2002-2022
First Observation Used2002-06-05
Last Observation Used2022-03-03
Observations (199)
Date Type RA Dec Mag Band Observatory
2004-09-06 05:57:21 C 00 09 01.45 +36 06 35.1 18.9 c 704
2004-09-06 06:13:03 C 00 09 01.60 +36 06 47.9 19.1 c 704
2004-09-06 06:28:45 C 00 09 01.71 +36 06 58.9 19.1 c 704
2004-09-06 06:44:27 C 00 09 01.81 +36 07 11.8 18.8 c 704
2004-09-06 08:17:51 C 00 09 02.29 +36 08 19.7 r 448
2004-09-06 08:26:11 C 00 09 02.32 +36 08 25.7 r 448
2004-09-06 08:37:38 C 00 09 02.38 +36 08 33.8 r 448
2004-09-06 20:08:00 C 00 09 14.65 +36 16 22.9 r A17
2004-09-06 20:47:29 C 00 09 15.08 +36 16 52.2 r A17
2004-09-06 21:25:45 C 00 09 15.44 +36 17 20.6 r A17
2004-09-11 03:00:36 C 00 10 25.85 +37 18 56.2 r 928
2004-09-11 03:04:07 C 00 10 25.86 +37 18 59.2 r 928
2004-09-11 03:15:57 C 00 10 25.85 +37 19 04.3 r 928
2004-09-15 06:57:06 C 00 11 02.17 +38 01 18.1 19.0 c 704
2004-09-15 07:14:21 C 00 11 02.08 +38 01 24.6 19.6 c 704
2004-09-15 07:31:11 C 00 11 01.98 +38 01 30.1 19.2 c 704
2004-09-15 07:48:08 C 00 11 01.83 +38 01 35.6 19.4 c 704
2004-09-15 08:04:54 C 00 11 01.76 +38 01 39.9 19.6 c 704
2004-09-23 22:40:24 C 00 11 16.07 +38 28 35.9 c J92
2004-10-03 01:20:27 C 00 11 14.40 +37 32 37.2 r 941
2004-10-03 01:21:36 C 00 11 14.39 +37 32 36.7 r 941
2004-10-03 01:23:53 C 00 11 14.37 +37 32 35.5 r 941
2004-10-03 01:25:02 C 00 11 14.36 +37 32 34.9 r 941
2004-10-08 06:15:46 C 00 11 43.81 +36 25 36.0 19.5 c 704
2004-10-08 06:31:23 C 00 11 43.76 +36 25 27.1 19.6 c 704
2004-10-08 06:47:02 C 00 11 43.71 +36 25 16.5 19.8 c 704
2004-10-08 07:02:41 C 00 11 43.57 +36 25 06.8 20.1 c 704
2004-10-08 07:18:21 C 00 11 43.50 +36 24 56.6 19.5 c 704
2004-10-09 04:37:10 C 00 11 53.55 +36 11 13.9 19.5 c 704
2004-10-09 04:52:35 C 00 11 53.57 +36 11 04.3 20.1 c 704
2004-10-09 05:08:00 C 00 11 53.48 +36 10 54.0 20.1 c 704
2004-10-09 05:23:26 C 00 11 53.52 +36 10 44.2 19.7 c 704
2004-10-09 05:38:52 C 00 11 53.43 +36 10 34.5 19.6 c 704
2004-10-10 04:42:42 C 00 12 04.81 +35 55 02.4 19.8 c 704
2004-10-10 04:58:35 C 00 12 04.78 +35 54 51.7 19.8 c 704
2004-10-10 05:15:17 C 00 12 04.77 +35 54 39.8 20.1 c 704
2004-10-10 05:31:00 C 00 12 04.71 +35 54 29.7 20.0 c 704
2004-10-10 05:48:00 C 00 12 04.64 +35 54 17.8 20.0 c 704
2004-10-22 22:46:56 C 00 17 24.72 +31 41 26.3 r 170
2004-10-22 22:50:17 C 00 17 24.80 +31 41 23.4 r 170
2004-10-22 22:58:03 C 00 17 24.96 +31 41 16.0 r 170
2004-10-23 06:03:33 C 00 17 36.76 +31 34 48.8 19.5 c 704
2004-10-23 06:20:26 C 00 17 37.13 +31 34 33.3 19.3 c 704
2004-10-23 06:37:17 C 00 17 37.52 +31 34 17.2 19.2 c 704
2004-10-23 06:54:08 C 00 17 37.87 +31 34 01.2 19.5 c 704
2004-10-23 07:10:56 C 00 17 38.21 +31 33 45.3 19.7 c 704
2004-10-30 04:31:15 C 00 23 12.38 +28 59 57.8 d G72
2004-10-30 04:35:04 C 00 23 12.58 +28 59 53.2 d G72
2004-10-30 04:38:53 C 00 23 12.73 +28 59 48.3 d G72
2004-10-30 04:42:42 C 00 23 12.99 +28 59 46.4 d G72