509935 (2009 QL8)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5408720245 ± 1.11e-08
Semi-major axis (a)1.9309462940 AU ± 1.80e-09
Inclination (i)4.24097752° ± 1.65e-06
Long. of Asc. Node (Ω)84.46843405° ± 2.90e-05
Arg. of Perihelion (ω)339.67613157° ± 2.82e-05
Mean Anomaly (M)349.56726520° ± 2.91e-06
Mean Motion (n)0.3673304949°/day ± 5.13e-10
Perihelion dist (q)0.88655146 AU ± 2.15e-08
Aphelion dist (Q)2.97534113 AU ± 2.17e-08
Orbital Period2.68321388 yr ± 3.75e-09
Physical Parameters
H (abs. magnitude)19.43
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.258″
Uncertainty0
Orbit TypeApollo
MOID0.028288 AU
Observations Used265
Radar Obs Used1
Oppositions5
Arc Total2009-2025
First Observation Used2009-08-20
Last Observation Used2025-12-18
Observations (288)
Date Type RA Dec Mag Band Observatory
2018-02-18 12:59:49 C 10 55 25.17 +22 58 05.5 U T05
2018-02-18 13:13:21 C 10 55 23.90 +22 58 07.0 U T05
2018-02-18 13:26:45 C 10 55 22.65 +22 58 08.7 U T05
2018-02-18 13:40:36 C 10 55 21.33 +22 58 11.0 U T05
2018-02-22 12:13:59 C 10 47 28.09 +23 08 23.2 U T05
2018-02-22 12:16:03 C 10 47 27.93 +23 08 23.9 U T05
2018-02-22 12:25:17 C 10 47 27.16 +23 08 23.9 U T05
2018-02-22 12:27:15 C 10 47 27.00 +23 08 24.6 U T05
2018-02-22 12:35:40 C 10 47 26.25 +23 08 24.3 U T05
2018-02-22 12:38:37 C 10 47 26.04 +23 08 24.8 U T05
2018-02-22 12:53:30 C 10 47 24.71 +23 08 25.2 U T05
2018-02-22 12:55:28 C 10 47 24.61 +23 08 24.6 U T05
2018-02-23 06:06:22 C 10 46 06.08 +23 09 18.1 U 703
2018-02-23 06:13:59 C 10 46 05.47 +23 09 17.6 U 703
2018-02-23 06:21:36 C 10 46 04.79 +23 09 18.3 U 703
2018-02-23 06:29:13 C 10 46 04.20 +23 09 18.4 U 703
2018-02-26 04:27:07 C 10 40 59.47 +23 10 28.6 U G96
2018-02-26 04:34:39 C 10 40 58.93 +23 10 28.5 U G96
2018-02-26 04:42:12 C 10 40 58.38 +23 10 28.6 U G96
2018-02-26 04:49:45 C 10 40 57.82 +23 10 28.7 U G96
2018-02-26 05:03:22 C 10 40 56.80 +23 10 29.7 U 703
2018-02-26 05:11:04 C 10 40 56.24 +23 10 29.1 U 703
2018-02-26 05:18:46 C 10 40 55.70 +23 10 29.0 U 703
2018-02-26 05:26:28 C 10 40 55.12 +23 10 29.0 U 703
2018-02-26 06:10:58 C 10 40 51.94 +23 10 28.1 U I41
2018-02-26 07:22:50 C 10 40 46.64 +23 10 28.1 U I41
2018-02-26 07:37:04 C 10 40 45.58 +23 10 28.1 U I41
2018-02-26 07:39:12 C 10 40 45.42 +23 10 28.0 U I41
2018-02-26 08:03:47 C 10 40 43.61 +23 10 27.6 U I41
2018-02-27 07:13:07 C 10 39 10.49 +23 09 55.4 U G96
2018-02-27 07:14:12 C 10 39 10.42 +23 09 55.5 U G96
2018-02-27 07:17:06 C 10 39 10.21 +23 09 55.3 U G96
2018-02-27 07:20:30 C 10 39 09.92 +23 09 55.3 U G96
2018-03-06 06:19:16 C 10 29 43.31 +22 54 58.9 U I41
2018-03-06 06:21:24 C 10 29 43.19 +22 54 58.7 U I41
2018-03-06 06:51:54 C 10 29 41.61 +22 54 54.7 U I41
2018-03-06 06:55:28 C 10 29 41.43 +22 54 54.3 U I41
2018-03-06 07:15:33 C 10 29 41.154 +22 54 53.66 U F51
2018-03-06 07:29:28 C 10 29 39.64 +22 54 49.2 U I41
2018-03-06 07:32:33 C 10 29 40.280 +22 54 51.66 U F51
2018-03-06 07:49:31 C 10 29 39.397 +22 54 49.48 U F51
2018-03-07 07:53:34 C 10 28 31.95 +22 51 12.0 U 703
2018-03-07 08:01:07 C 10 28 31.57 +22 51 11.7 U 703
2018-03-07 08:08:39 C 10 28 31.21 +22 51 10.1 U 703
2018-03-07 08:16:12 C 10 28 30.87 +22 51 08.9 U 703
2018-03-14 06:02:10 C 10 22 31.68 +22 18 58.2 U G96
2018-03-14 06:09:34 C 10 22 31.46 +22 18 56.3 U G96
2018-03-14 06:17:00 C 10 22 31.22 +22 18 55.1 U G96
2018-03-14 06:24:25 C 10 22 30.96 +22 18 53.1 U G96
2018-03-16 06:03:14 C 10 21 18.05 +22 07 33.1 U 703
Radar Observations (1)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2017-12-29 11:12:00 -92671.7921 0.15 Hz 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)