2009 FF

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4684189057 ± 1.36e-08
Semi-major axis (a)1.4733289794 AU ± 1.69e-09
Inclination (i)0.97928952° ± 7.33e-08
Long. of Asc. Node (Ω)263.35747356° ± 5.97e-05
Arg. of Perihelion (ω)13.53887129° ± 6.05e-05
Mean Anomaly (M)66.34430722° ± 3.37e-07
Mean Motion (n)0.5511409485°/day ± 9.47e-10
Perihelion dist (q)0.78319383 AU ± 2.01e-08
Aphelion dist (Q)2.16346413 AU ± 2.02e-08
Orbital Period1.78833797 yr ± 3.07e-09
NGA Modelr2
A2-4.06381871e-14 ± 1.97e-15 AU/d²
Physical Parameters
H (abs. magnitude)21.97
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.178″
Uncertainty0
Orbit TypeApollo
MOID0.014589 AU
Observations Used568
Radar Obs Used7
Oppositions18
Arc Total1984-2025
First Observation Used1984-04-05
Last Observation Used2025-11-11
Observations (620)
Date Type RA Dec Mag Band Observatory
1984-04-05 12:25:47 11 52 01.07 -13 04 26.2 c 260
1984-04-05 13:25:46 11 51 44.40 -13 05 35.2 c 260
2009-03-16 08:11:34 C 10 39 57.27 +04 09 05.0 r G96
2009-03-16 08:23:16 C 10 39 55.80 +04 09 11.5 r G96
2009-03-16 08:35:11 C 10 39 54.21 +04 09 19.6 r G96
2009-03-16 08:46:58 C 10 39 52.66 +04 09 26.6 r G96
2009-03-16 19:30:38 C 10 38 34.27 +04 16 04.2 r 493
2009-03-16 19:33:28 C 10 38 33.94 +04 16 05.2 r 493
2009-03-16 21:32:10 C 10 38 18.16 +04 17 18.3 o B04
2009-03-16 21:46:53 C 10 38 16.22 +04 17 27.0 o B04
2009-03-16 22:08:03 C 10 38 13.43 +04 17 40.3 o B04
2009-03-16 23:09:04 C 10 38 05.39 +04 18 18.5 v 204
2009-03-16 23:30:11 C 10 38 02.62 +04 18 31.7 v 204
2009-03-17 03:23:33 C 10 37 34.22 +04 21 01.6 r H36
2009-03-17 03:43:32 C 10 37 31.53 +04 21 13.5 r H36
2009-03-17 04:00:02 C 10 37 29.33 +04 21 24.5 r H36
2009-03-17 05:00:43 C 10 37 21.05 +04 22 02.6 r H55
2009-03-17 05:11:27 C 10 37 19.65 +04 22 09.0 r H55
2009-03-17 05:19:07 C 10 37 19.26 +04 22 17.1 o 291
2009-03-17 05:22:16 C 10 37 18.20 +04 22 17.0 r H55
2009-03-17 05:24:57 C 10 37 18.49 +04 22 20.7 o 291
2009-03-17 05:30:16 C 10 37 17.81 +04 22 23.9 o 291
2009-03-17 06:56:59 C 10 37 06.39 +04 23 18.1 o 673
2009-03-17 07:05:50 C 10 37 05.22 +04 23 23.5 o 673
2009-03-17 07:19:30 C 10 37 03.41 +04 23 31.9 o 673
2009-03-17 07:26:10 C 10 37 02.57 +04 23 36.3 o 673
2009-03-17 07:33:21 C 10 37 01.30 +04 23 41.6 r G96
2009-03-17 07:49:48 C 10 36 59.11 +04 23 51.7 r G96
2009-03-17 08:06:23 C 10 36 56.88 +04 24 02.3 r G96
2009-03-17 08:16:48 C 10 36 55.46 +04 24 08.0 v H01
2009-03-17 08:22:57 C 10 36 54.72 +04 24 12.8 r G96
2009-03-17 08:23:22 C 10 36 54.57 +04 24 12.3 v H01
2009-03-17 08:32:51 C 10 36 53.32 +04 24 18.2 v H01
2009-03-21 06:30:40 C 10 24 26.19 +05 26 36.4 o 291
2009-03-21 06:43:46 C 10 24 24.31 +05 26 45.5 o 291
2009-03-21 06:56:34 C 10 24 22.44 +05 26 54.0 o 291
2009-03-22 10:39:00 C 10 20 31.73 +05 46 48.1 o 474
2009-03-22 10:43:09 C 10 20 30.90 +05 46 51.9 o 474
2009-03-22 10:56:40 C 10 20 29.12 +05 47 00.5 o 474
2009-03-22 11:00:40 C 10 20 28.32 +05 47 04.0 o 474
2009-03-22 11:04:39 C 10 20 27.94 +05 47 07.0 o 474
2009-03-26 02:48:06 C 10 07 49.24 +06 49 48.6 o 291
2009-03-26 02:54:59 C 10 07 48.21 +06 49 53.5 o 291
2009-03-26 03:00:32 C 10 07 47.35 +06 49 57.7 o 291
2009-03-26 08:41:27 C 10 06 54.43 +06 54 07.8 r G96
2009-03-26 08:51:30 C 10 06 52.99 +06 54 15.2 r G96
2009-03-26 09:01:37 C 10 06 51.33 +06 54 23.1 r G96
2009-03-26 09:11:46 C 10 06 49.82 +06 54 29.6 r G96
2009-03-28 04:56:25 C 10 00 18.45 +07 27 03.9 c 711
2009-03-28 05:04:38 C 10 00 17.17 +07 27 10.2 c 711
Radar Observations (7)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2025-09-11 03:50:00 168340.5 1 Hz 8560 -14 -14
2025-09-11 04:10:00 164369.3 0.5 Hz 8560 -14 -14
2025-09-11 04:20:00 17880158 10 us 8560 -14 -14
2025-09-11 04:50:00 17846629.1 0.2 us 8560 -14 -14
2025-09-12 23:30:00 -337977.158 0.5 Hz 8560 -14 -14
2025-09-13 00:00:00 19815188.89 0.3 us 8560 -14 -14
2025-09-13 03:20:00 -370953.343 0.5 Hz 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m)