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
2017-06-22 09:41:22 C 22 57 11.86 +26 37 19.2 q I52
2017-10-14 03:52:50 C 21 34 57.17 +31 13 36.2 o 691
2017-10-14 04:26:35 C 21 34 57.27 +31 12 54.5 o 691
2017-10-22 02:40:50 C 21 38 03.98 +27 17 47.2 o 691
2017-10-22 03:02:00 C 21 38 04.43 +27 17 21.0 o 691
2017-10-22 03:22:44 C 21 38 04.90 +27 16 56.0 o 691
2017-10-24 02:31:03 C 21 39 24.36 +26 19 38.3 o 691
2017-10-24 03:05:16 C 21 39 25.25 +26 18 57.0 o 691
2017-10-27 02:51:57 C 21 41 49.42 +24 53 06.1 U G96
2017-10-27 02:59:35 C 21 41 49.70 +24 52 57.2 U G96
2017-10-27 03:07:16 C 21 41 49.94 +24 52 48.1 U G96
2017-10-27 03:14:58 C 21 41 50.20 +24 52 39.1 U G96
2020-08-08 10:38:49 C 23 12 59.91 +43 37 10.8 V G96
2020-08-08 10:47:03 C 23 12 59.58 +43 37 15.6 V G96
2020-08-08 10:55:18 C 23 12 59.25 +43 37 21.1 V G96
2020-08-15 07:57:21 C 23 05 50.07 +45 09 04.6 V G96
2020-08-15 08:05:00 C 23 05 49.68 +45 09 08.1 V G96
2020-08-15 08:12:40 C 23 05 49.22 +45 09 12.1 V G96
2020-10-12 03:07:36 C 21 46 10.07 +33 50 39.4 V G96
2020-10-12 03:15:49 C 21 46 09.97 +33 50 28.4 V G96
2020-10-12 03:24:01 C 21 46 09.92 +33 50 18.5 V G96
2020-10-12 03:32:13 C 21 46 09.84 +33 50 08.1 V G96
2020-10-26 07:00:14 C 21 50 39.224 +26 35 23.83 U F51
2020-10-26 07:14:38 C 21 50 39.629 +26 35 05.73 U F51
2020-11-11 02:35:58 C 22 08 06.45 +19 11 47.8 V G96
2020-11-11 02:43:34 C 22 08 06.90 +19 11 39.9 V G96
2020-11-11 02:51:10 C 22 08 07.31 +19 11 31.6 V G96
2020-11-11 02:58:45 C 22 08 07.76 +19 11 23.7 V G96
2020-11-13 06:39:29 C 22 11 18.639 +18 17 35.55 U F51
2020-11-13 06:57:58 C 22 11 19.721 +18 17 16.46 U F51
2020-11-13 07:16:39 C 22 11 20.872 +18 16 57.15 U F51
2020-11-13 07:34:59 C 22 11 21.988 +18 16 38.20 U F51
2021-01-05 05:21:22 C 00 05 59.486 +05 37 13.01 U F51
2021-01-05 05:38:30 C 00 06 01.320 +05 37 08.93 U F51
2021-01-05 05:55:42 C 00 06 03.147 +05 37 04.58 U F51
2021-01-05 06:12:49 C 00 06 04.976 +05 37 00.32 U F51
2023-10-04 04:49:06 C 22 03 51.541 +39 53 29.26 V G96
2023-10-04 04:56:01 C 22 03 51.239 +39 53 21.37 V G96
2023-10-04 05:02:57 C 22 03 50.944 +39 53 13.13 V G96
2023-10-04 05:09:52 C 22 03 50.692 +39 53 05.28 V G96
2023-10-22 07:12:40 C 21 58 38.569 +30 38 25.21 X F51
2023-10-22 07:25:02 C 21 58 38.678 +30 38 08.68 X F51
2023-10-22 07:53:09 C 21 58 38.942 +30 37 30.47 X F51
2023-10-23 03:02:39 C 21 58 55.477 +30 11 44.92 V G96
2023-10-23 03:10:50 C 21 58 55.603 +30 11 33.25 V G96
2023-10-23 03:19:00 C 21 58 55.675 +30 11 22.63 V G96
2023-11-03 03:26:52 C 22 06 20.736 +24 24 31.79 V G96
2023-11-03 03:34:14 C 22 06 21.020 +24 24 22.54 V G96
2023-11-03 03:41:38 C 22 06 21.280 +24 24 13.28 V G96
2023-11-04 03:38:12 C 22 07 20.456 +23 54 02.45 V G96