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
2010-02-07 10:29:52 C 12 50 28.54 +05 48 24.3 o H21
2010-02-09 10:03:52 C 12 48 08.74 +06 12 48.8 u 448
2010-02-09 10:43:08 C 12 48 06.70 +06 13 08.3 u 448
2010-02-09 11:22:54 C 12 48 04.46 +06 13 29.9 u 448
2010-02-26 06:19:36 C 12 20 46.03 +09 49 56.0 o H21
2010-02-26 06:31:02 C 12 20 45.08 +09 50 00.0 o H21
2010-02-26 06:42:10 C 12 20 44.15 +09 50 05.8 o H21
2013-04-08 07:52:33 C 14 34 30.79 -09 18 57.2 o 695
2013-04-08 08:04:38 C 14 34 30.17 -09 18 54.1 o 695
2013-04-08 08:15:33 C 14 34 29.60 -09 18 51.3 o 695
2013-04-10 09:21:08 C 14 31 55.72 -09 06 31.0 o 695
2013-04-10 09:32:34 C 14 31 55.07 -09 06 28.2 o 695
2013-04-10 09:38:36 C 14 31 54.73 -09 06 26.1 o 695
2017-07-04 09:51:31 C 22 09 17.07 -16 52 46.5 o 291
2017-07-04 10:12:16 C 22 09 17.33 -16 52 49.7 o 291
2017-07-04 10:33:02 C 22 09 17.56 -16 52 53.0 o 291
2017-12-26 12:13:39 C 13 43 19.08 +00 15 47.0 U 703
2017-12-26 12:21:14 C 13 43 17.05 +00 16 08.4 U 703
2017-12-26 12:36:25 C 13 43 12.94 +00 16 52.2 U 703
2017-12-29 11:02:55 C 13 26 58.11 +03 24 32.2 U 703
2017-12-29 11:10:37 C 13 26 56.39 +03 24 50.5 U 703
2017-12-29 11:18:18 C 13 26 54.67 +03 25 09.8 U 703
2017-12-29 11:26:00 C 13 26 52.94 +03 25 28.6 U 703
2017-12-30 10:03:52 C 13 22 15.15 +04 18 58.1 o 691
2017-12-30 10:18:05 C 13 22 12.18 +04 19 31.9 o 691
2017-12-30 10:32:13 C 13 22 09.24 +04 20 04.7 o 691
2018-01-02 11:23:51 S 13 08 39.276 +06 54 14.72 L C51
2018-01-02 14:32:21 S 13 08 07.214 +07 00 18.36 L C51
2018-01-02 14:59:48 C 13 08 05.74 +07 00 49.1 U T08
2018-01-02 15:02:27 C 13 08 05.26 +07 00 53.6 U T08
2018-01-02 15:11:13 C 13 08 03.63 +07 01 11.4 U T08
2018-01-02 15:13:58 C 13 08 03.15 +07 01 16.2 U T08
2018-01-02 15:22:44 C 13 08 01.50 +07 01 33.8 U T08
2018-01-02 15:25:36 C 13 08 00.98 +07 01 39.1 U T08
2018-01-02 15:35:08 C 13 07 59.24 +07 01 57.5 U T08
2018-01-02 15:38:09 C 13 07 58.61 +07 02 02.3 U T08
2018-01-02 16:06:36 S 13 07 51.266 +07 03 20.12 L C51
2018-01-02 17:40:51 S 13 07 35.359 +07 06 19.55 L C51
2018-01-02 19:15:06 S 13 07 19.502 +07 09 19.12 L C51
2018-01-05 11:57:54 C 12 57 06.55 +09 03 37.7 o 691
2018-01-05 11:59:40 C 12 57 06.28 +09 03 41.0 o 691
2018-01-05 12:11:41 C 12 57 04.31 +09 04 01.0 o 691
2018-01-12 14:04:39 C 12 34 02.65 +13 07 09.4 U T05
2018-01-12 14:16:09 C 12 34 01.05 +13 07 23.6 U T05
2018-01-12 14:27:35 C 12 33 59.46 +13 07 38.1 U T05
2018-01-12 14:39:01 C 12 33 57.85 +13 07 52.5 U T05
2018-01-14 03:15:04 C 12 29 25.45 +13 51 50.4 U 160
2018-01-14 03:17:51 C 12 29 25.07 +13 51 53.4 U 160
2018-01-14 03:21:01 C 12 29 24.65 +13 51 56.8 U 160
2018-01-14 11:49:50 C 12 28 22.13 +14 02 02.4 U G96
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)