505019 (2011 QH21)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2334527614 ± 3.44e-07
Semi-major axis (a)1.3076428411 AU ± 6.26e-09
Inclination (i)22.84290134° ± 1.08e-05
Long. of Asc. Node (Ω)241.27041228° ± 3.06e-05
Arg. of Perihelion (ω)269.40235791° ± 1.03e-04
Mean Anomaly (M)21.81968432° ± 1.70e-04
Mean Motion (n)0.6591413625°/day ± 4.74e-09
Perihelion dist (q)1.00237001 AU ± 4.50e-07
Aphelion dist (Q)1.61291567 AU ± 4.50e-07
Orbital Period1.49531852 yr ± 1.07e-08
Physical Parameters
H (abs. magnitude)19.00
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.271″
Uncertainty0
Orbit TypeApollo
MOID0.192268 AU
Observations Used105
Oppositions4
Arc Total2011-2023
First Observation Used2011-08-23
Last Observation Used2023-11-25
Observations (106)
Date Type RA Dec Mag Band Observatory
2011-08-23 09:30:23 C 22 07 52.527 +43 59 14.78 L F51
2011-08-23 09:47:55 C 22 07 51.111 +43 59 15.22 L F51
2011-08-23 10:03:26 C 22 07 49.831 +43 59 15.67 L F51
2011-08-25 07:09:38 C 22 04 18.17 +43 58 25.0 v F65
2011-08-25 07:19:39 C 22 04 17.35 +43 58 24.8 v F65
2011-08-26 02:45:05 C 22 02 45.09 +43 57 01.5 t H21
2011-08-26 03:20:13 C 22 02 42.27 +43 56 59.3 t H21
2011-08-26 03:28:32 C 22 02 41.57 +43 56 58.7 t H21
2011-08-26 06:22:19 C 22 02 27.34 +43 56 44.3 u H36
2011-08-26 06:35:34 C 22 02 26.27 +43 56 43.9 u H36
2011-08-26 06:47:23 C 22 02 25.23 +43 56 43.2 u H36
2011-09-12 04:02:00 C 21 32 18.70 +41 13 08.8 o 950
2011-09-12 04:04:27 C 21 32 18.54 +41 13 07.3 o 950
2011-09-12 04:06:53 C 21 32 18.35 +41 13 05.2 o 950
2011-09-12 04:09:19 C 21 32 18.22 +41 13 03.3 o 950
2011-09-12 04:11:46 C 21 32 18.00 +41 13 01.2 o 950
2011-09-12 04:14:12 C 21 32 17.84 +41 12 59.7 o 950
2011-09-26 23:46:32 C 21 16 04.72 +35 54 42.2 t J04
2011-09-27 00:01:14 C 21 16 04.35 +35 54 27.2 t J04
2011-09-27 00:15:56 C 21 16 03.85 +35 54 11.7 t J04
2011-10-24 02:55:16 C 21 21 14.06 +23 43 03.3 o 291
2011-10-24 03:01:23 C 21 21 14.33 +23 42 55.8 o 291
2011-11-01 00:37:35 C 21 29 55.26 +20 25 48.9 o H21
2011-11-01 00:40:26 C 21 29 55.39 +20 25 45.9 o H21
2011-11-01 00:58:26 C 21 29 56.25 +20 25 27.5 o H21
2011-12-24 00:46:42 C 23 15 08.83 +07 27 22.0 v H21
2011-12-24 01:07:12 C 23 15 10.89 +07 27 16.9 v H21
2011-12-24 01:27:38 C 23 15 12.99 +07 27 11.7 v H21
2014-06-01 04:07:08 C 22 27 57.51 +17 23 13.5 21.5 t 950
2014-06-01 04:10:24 C 22 27 57.66 +17 23 17.2 21.4 t 950
2014-06-01 04:13:42 C 22 27 57.88 +17 23 20.4 21.6 t 950
2014-06-01 04:16:59 C 22 27 58.03 +17 23 24.1 21.4 t 950
2014-06-01 04:20:16 C 22 27 58.18 +17 23 27.3 21.5 t 950
2014-06-01 04:23:32 C 22 27 58.39 +17 23 31.5 21.3 t 950
2014-06-01 04:26:54 C 22 27 58.50 +17 23 34.7 21.4 t 950
2014-06-01 04:30:11 C 22 27 58.70 +17 23 38.0 21.3 t 950
2014-09-22 21:06:22 C 21 32 17.07 +39 12 21.4 q 204
2014-09-22 21:27:23 C 21 32 16.12 +39 12 01.8 q 204
2014-10-16 03:07:37 C 21 25 02.27 +28 43 44.3 q 448
2014-10-16 04:09:18 C 21 25 03.12 +28 42 30.3 q 448
2014-10-16 05:10:52 C 21 25 03.99 +28 41 16.5 q 448
2014-10-28 01:58:34 C 21 33 41.24 +23 12 02.4 q G96
2014-10-28 02:11:42 C 21 33 41.77 +23 11 48.1 q G96
2014-10-28 02:25:00 C 21 33 42.29 +23 11 33.3 q G96
2014-10-28 02:38:08 C 21 33 42.80 +23 11 18.9 q G96
2014-11-15 00:59:05 C 21 58 23.60 +16 07 23.4 q H21
2014-11-15 01:13:53 C 21 58 24.67 +16 07 10.2 q H21
2014-11-15 01:28:40 C 21 58 25.64 +16 06 57.0 q H21
2017-06-22 09:30:38 C 22 57 11.38 +26 37 07.5 q I52
2017-06-22 09:36:00 C 22 57 11.64 +26 37 14.0 q I52