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
2018-01-14 11:57:16 C 12 28 21.13 +14 02 11.1 U G96
2018-01-14 12:04:43 C 12 28 20.13 +14 02 19.8 U G96
2018-01-14 12:12:10 C 12 28 19.13 +14 02 28.4 U G96
2018-01-15 10:28:07 C 12 25 37.70 +14 27 59.4 U 703
2018-01-15 10:35:43 C 12 25 36.71 +14 28 08.3 U 703
2018-01-15 10:43:19 C 12 25 35.69 +14 28 16.7 U 703
2018-01-15 10:50:56 C 12 25 34.68 +14 28 25.4 U 703
2018-01-18 03:38:07 C 12 17 47.83 +15 38 21.5 q 160
2018-01-18 03:41:07 C 12 17 47.44 +15 38 24.5 q 160
2018-01-18 03:44:08 C 12 17 47.05 +15 38 27.3 q 160
2018-01-18 09:08:56 C 12 17 10.17 +15 44 08.4 U 703
2018-01-18 09:16:31 C 12 17 09.19 +15 44 16.8 U 703
2018-01-18 09:24:07 C 12 17 08.19 +15 44 24.8 U 703
2018-01-18 09:31:42 C 12 17 07.29 +15 44 32.2 U 703
2018-01-19 15:10:52 C 12 13 34.76 +16 14 38.6 U T08
2018-01-19 15:20:51 C 12 13 33.45 +16 14 48.1 U T08
2018-01-19 15:36:05 C 12 13 31.45 +16 15 03.3 U T08
2018-01-19 15:55:41 C 12 13 28.93 +16 15 22.2 U T08
2018-01-22 04:20:30 C 12 06 23.71 +17 12 37.2 18.3 q J43
2018-01-22 04:33:10 C 12 06 22.09 +17 12 48.8 18.3 q J43
2018-01-22 04:45:51 C 12 06 20.47 +17 13 00.3 18.2 q J43
2018-01-22 04:58:31 C 12 06 18.84 +17 13 11.7 18.2 q J43
2018-01-23 09:44:48 C 12 02 58.02 +17 38 54.0 U 703
2018-01-23 09:52:19 C 12 02 57.09 +17 39 00.4 U 703
2018-01-23 09:59:50 C 12 02 56.13 +17 39 07.0 U 703
2018-01-23 10:07:21 C 12 02 55.18 +17 39 13.5 U 703
2018-01-24 00:37:46 C 12 01 14.04 +17 51 39.5 q 160
2018-01-24 00:40:45 C 12 01 13.67 +17 51 42.4 q 160
2018-01-24 00:43:43 C 12 01 13.31 +17 51 45.1 q 160
2018-01-26 11:25:09 C 11 54 21.91 +18 40 13.9 U 703
2018-01-26 11:32:40 C 11 54 20.96 +18 40 19.5 U 703
2018-01-26 11:40:11 C 11 54 20.01 +18 40 26.1 U 703
2018-02-08 08:17:11 C 11 19 35.03 +21 47 39.7 U 703
2018-02-08 08:24:45 C 11 19 34.14 +21 47 42.9 U 703
2018-02-08 08:32:20 C 11 19 33.29 +21 47 46.0 U 703
2018-02-08 08:39:53 C 11 19 32.42 +21 47 49.6 U 703
2018-02-10 10:06:18 C 11 14 19.522 +22 07 31.34 U F51
2018-02-10 10:24:43 C 11 14 17.466 +22 07 38.51 U F51
2018-02-10 10:43:11 C 11 14 15.398 +22 07 45.68 U F51
2018-02-10 23:16:09 C 11 12 57.23 +22 12 05.2 q 160
2018-02-10 23:18:57 C 11 12 56.84 +22 12 06.7 q 160
2018-02-10 23:21:20 C 11 12 56.55 +22 12 07.0 q 160
2018-02-11 10:30:14 C 11 11 46.43 +22 16 05.1 U G96
2018-02-11 10:37:37 C 11 11 45.62 +22 16 07.7 U G96
2018-02-11 10:45:00 C 11 11 44.82 +22 16 10.0 U G96
2018-02-11 10:52:22 C 11 11 44.01 +22 16 12.4 U G96
2018-02-12 14:56:27 C 11 08 52.27 +22 25 22.3 U T08
2018-02-12 15:15:12 C 11 08 50.32 +22 25 27.3 U T08
2018-02-12 15:34:05 C 11 08 48.31 +22 25 33.1 U T08
2018-02-12 15:53:09 C 11 08 46.35 +22 25 38.0 U T08
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)