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
2009-08-20 09:23:47 C 00 09 46.90 -14 27 37.8 r 703
2009-08-20 09:33:45 C 00 09 47.48 -14 27 42.1 r 703
2009-08-20 09:43:43 C 00 09 48.09 -14 27 46.8 r 703
2009-08-20 09:53:42 C 00 09 48.67 -14 27 53.1 r 703
2009-08-20 10:07:09 C 00 09 49.50 -14 27 59.6 r 703
2009-08-20 10:17:32 C 00 09 50.11 -14 28 04.7 r 703
2009-08-20 10:27:48 C 00 09 50.72 -14 28 10.3 r 703
2009-08-20 10:38:14 C 00 09 51.40 -14 28 15.4 r 703
2009-08-20 23:10:50 C 00 10 42.14 -14 34 48.4 c 587
2009-08-20 23:18:54 C 00 10 42.60 -14 34 51.8 c 587
2009-08-20 23:27:08 C 00 10 43.29 -14 34 56.7 c 587
2009-08-20 23:51:29 C 00 10 44.69 -14 35 10.2 r 235
2009-08-21 00:05:50 C 00 10 45.56 -14 35 18.5 r 235
2009-08-21 00:27:25 C 00 10 47.06 -14 35 30.5 r J95
2009-08-21 00:35:47 C 00 10 47.59 -14 35 34.8 r J95
2009-08-21 00:44:11 C 00 10 48.13 -14 35 39.9 r J95
2009-08-21 00:46:17 C 00 10 47.98 -14 35 40.6 r 113
2009-08-21 00:49:36 C 00 10 48.30 -14 35 41.1 v 204
2009-08-21 00:57:22 C 00 10 48.70 -14 35 46.9 r 113
2009-08-21 00:58:45 C 00 10 48.85 -14 35 46.3 v 204
2009-08-21 01:08:24 C 00 10 49.39 -14 35 53.0 r 113
2009-08-21 01:29:09 C 00 10 50.75 -14 36 02.2 v 204
2009-08-22 00:48:41 C 00 12 25.18 -14 48 39.5 r J95
2009-08-22 00:57:09 C 00 12 25.72 -14 48 43.6 r J95
2009-08-22 01:05:38 C 00 12 26.28 -14 48 49.0 r J95
2009-08-23 14:13:05 C 00 15 00.39 -15 09 36.6 r E18
2009-08-23 14:46:03 C 00 15 02.45 -15 09 56.2 r E18
2009-08-23 23:36:54 C 00 15 40.17 -15 15 41.2 r 176
2009-08-23 23:39:19 C 00 15 40.29 -15 15 43.1 r 176
2009-08-23 23:41:07 C 00 15 40.41 -15 15 44.3 r 176
2009-08-23 23:43:32 C 00 15 40.64 -15 15 45.6 r 176
2009-08-24 11:19:04 C 00 16 29.97 -15 22 45.8 o F65
2009-08-24 11:20:13 C 00 16 30.05 -15 22 46.3 o F65
2009-08-24 11:21:26 C 00 16 30.13 -15 22 47.3 o F65
2009-08-25 06:42:59 C 00 17 54.21 -15 35 06.1 o H55
2009-08-25 06:50:12 C 00 17 54.70 -15 35 10.9 o H55
2009-08-25 06:52:37 C 00 17 54.86 -15 35 12.5 o H55
2009-08-26 07:01:24 C 00 19 42.32 -15 51 05.8 o H55
2009-08-26 07:06:30 C 00 19 42.68 -15 51 09.1 o H55
2009-08-26 07:12:55 C 00 19 43.11 -15 51 13.6 o H55
2009-08-26 07:19:18 C 00 19 43.55 -15 51 17.8 o H55
2009-08-26 15:15:19 C 00 20 20.47 -15 56 09.8 19.0 o D20
2009-08-26 15:19:14 C 00 20 20.73 -15 56 12.2 19.0 o D20
2009-08-26 15:22:26 C 00 20 20.96 -15 56 14.8 19.0 o D20
2009-08-26 16:19:54 C 00 20 25.01 -15 56 55.0 18.9 o D20
2009-08-26 16:23:12 C 00 20 25.23 -15 56 57.3 18.9 o D20
2009-08-26 16:26:15 C 00 20 25.50 -15 56 59.7 18.9 o D20
2009-08-28 16:39:30 C 00 24 12.26 -16 31 33.4 c D21
2009-08-28 16:46:01 C 00 24 12.73 -16 31 38.2 c D21
2009-08-28 16:52:33 C 00 24 13.25 -16 31 43.1 c D21
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)