2009 DF1

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4080628856 ± 7.66e-08
Semi-major axis (a)1.9779543744 AU ± 3.29e-08
Inclination (i)4.06374590° ± 3.67e-06
Long. of Asc. Node (Ω)142.21088703° ± 5.17e-05
Arg. of Perihelion (ω)38.66806422° ± 8.34e-05
Mean Anomaly (M)357.82838012° ± 6.97e-05
Mean Motion (n)0.3543136402°/day ± 8.83e-09
Perihelion dist (q)1.17082460 AU ± 1.53e-07
Aphelion dist (Q)2.78508414 AU ± 1.58e-07
Orbital Period2.78179040 yr ± 6.93e-08
Physical Parameters
H (abs. magnitude)20.61
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.381″
Uncertainty0
Orbit TypeAmor
MOID0.180928 AU
Observations Used158
Oppositions7
Arc Total2009-2020
First Observation Used2009-02-19
Last Observation Used2020-01-23
Observations (162)
Date Type RA Dec Mag Band Observatory
2009-04-08 07:49:47 C 14 48 43.59 +04 23 54.6 o H55
2009-04-09 06:37:20 C 14 49 51.94 +04 24 23.2 o H55
2009-04-09 06:44:32 C 14 49 52.22 +04 24 23.3 o H55
2009-04-09 06:52:01 C 14 49 52.52 +04 24 23.1 o H55
2009-04-13 21:28:30 C 14 54 32.16 +04 21 26.9 r A13
2009-04-13 22:00:31 C 14 54 33.16 +04 21 24.7 r A13
2009-04-17 07:37:43 C 14 57 07.65 +04 13 42.4 o H55
2009-04-17 07:43:52 C 14 57 07.72 +04 13 41.3 o H55
2009-04-17 07:50:26 C 14 57 07.91 +04 13 40.9 o H55
2009-04-18 07:36:27 C 14 57 46.18 +04 10 29.2 o H55
2009-04-18 07:39:02 C 14 57 46.22 +04 10 28.8 o H55
2009-04-18 07:41:53 C 14 57 46.26 +04 10 28.3 o H55
2009-04-18 07:44:13 C 14 57 46.30 +04 10 27.9 o H55
2009-04-20 09:20:17 C 14 58 56.24 +04 02 30.5 r 703
2009-04-20 09:30:42 C 14 58 56.38 +04 02 27.6 r 703
2009-04-20 09:41:04 C 14 58 56.46 +04 02 25.6 r 703
2009-04-20 09:51:31 C 14 58 56.56 +04 02 24.0 r 703
2009-04-22 07:56:11 C 14 59 51.17 +03 53 14.5 o H55
2009-04-22 08:09:56 C 14 59 51.29 +03 53 11.5 o H55
2009-04-22 08:14:46 C 14 59 51.34 +03 53 10.2 o H55
2009-04-24 22:36:35 C 15 00 51.06 +03 38 11.8 o 152
2009-04-24 23:05:46 C 15 00 51.34 +03 38 04.3 o 152
2009-04-24 23:36:48 C 15 00 51.58 +03 37 55.8 o 152
2009-04-26 00:24:55 C 15 01 10.61 +03 31 11.2 o 152
2009-04-26 00:31:19 C 15 01 10.63 +03 31 11.1 o 152
2009-04-26 00:57:50 C 15 01 10.84 +03 31 02.9 o 152
2009-04-26 01:09:33 C 15 01 10.96 +03 31 00.2 o 152
2009-04-26 20:25:25 C 15 01 26.44 +03 25 30.6 r A13
2009-04-26 21:10:22 C 15 01 26.79 +03 25 18.2 r A13
2009-05-01 14:18:42 C 15 02 25.62 +02 47 37.0 o 300
2009-05-01 14:24:24 C 15 02 25.55 +02 47 35.7 o 300
2009-05-01 14:30:03 C 15 02 25.62 +02 47 34.4 o 300
2009-05-01 14:35:44 C 15 02 25.58 +02 47 31.6 o 300
2009-05-04 23:04:13 C 15 02 53.07 +02 15 35.8 r B67
2009-05-04 23:14:57 C 15 02 53.07 +02 15 31.6 r B67
2009-05-04 23:25:30 C 15 02 53.06 +02 15 26.9 r B67
2009-05-13 06:32:49 C 15 03 42.76 +00 42 24.8 r 703
2009-05-13 06:43:16 C 15 03 42.69 +00 42 19.4 r 703
2009-05-13 06:53:47 C 15 03 42.66 +00 42 14.6 r 703
2009-05-13 07:04:14 C 15 03 42.62 +00 42 10.9 r 703
2009-05-20 06:04:18 C 15 04 34.95 -00 47 32.0 o H55
2009-05-20 06:13:12 C 15 04 34.97 -00 47 36.9 o H55
2009-05-20 06:15:25 C 15 04 34.98 -00 47 38.2 o H55
2009-05-26 08:53:24 C 15 05 52.30 -02 11 47.8 o 691
2009-05-26 09:18:45 C 15 05 52.47 -02 12 02.8 o 691
2009-05-26 09:40:28 C 15 05 52.65 -02 12 15.4 o 691
2009-05-30 08:57:34 C 15 07 06.65 -03 08 34.7 o 691
2009-05-30 09:22:58 C 15 07 06.98 -03 08 50.5 o 691
2009-05-30 09:44:42 C 15 07 07.22 -03 09 02.3 o 691
2009-06-02 05:25:00 C 15 08 13.57 -03 49 23.6 r 448