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
2009-02-19 10:34:26 C 12 42 59.76 +01 06 07.0 r 703
2009-02-19 10:46:12 C 12 43 01.27 +01 06 07.7 r 703
2009-02-19 11:09:48 C 12 43 04.29 +01 06 09.2 r 703
2009-02-19 11:59:56 C 12 43 10.70 +01 06 10.6 r 703
2009-02-19 12:09:20 C 12 43 12.03 +01 06 11.3 r 703
2009-02-19 12:18:51 C 12 43 13.22 +01 06 11.1 r 703
2009-02-19 12:20:13 C 12 43 13.34 +01 06 10.7 v H01
2009-02-19 12:25:04 C 12 43 13.98 +01 06 10.9 v H01
2009-02-19 12:28:15 C 12 43 14.41 +01 06 11.1 r 703
2009-02-19 12:31:26 C 12 43 14.80 +01 06 11.1 v H01
2009-02-19 12:38:37 C 12 43 15.74 +01 06 11.5 v H01
2009-02-19 22:31:21 C 12 44 39.71 +01 06 32.5 c B33
2009-02-19 22:37:55 C 12 44 40.57 +01 06 33.3 c B33
2009-02-19 22:46:26 C 12 44 41.65 +01 06 32.8 c B33
2009-02-19 23:23:40 C 12 44 46.60 +01 06 33.6 v 204
2009-02-19 23:34:03 C 12 44 47.98 +01 06 34.3 v 204
2009-02-19 23:41:23 C 12 44 49.35 +01 06 38.4 r 493
2009-02-19 23:42:54 C 12 44 49.54 +01 06 38.5 r 493
2009-02-19 23:44:06 C 12 44 49.31 +01 06 34.8 v 204
2009-02-19 23:44:26 C 12 44 49.74 +01 06 38.6 r 493
2009-02-20 12:15:01 C 12 46 30.47 +01 07 18.3 v H01
2009-02-20 12:20:04 C 12 46 31.13 +01 07 18.6 v H01
2009-02-20 12:26:58 C 12 46 32.04 +01 07 18.9 v H01
2009-02-20 12:33:25 C 12 46 32.88 +01 07 19.2 v H01
2009-02-21 09:29:06 C 12 49 27.24 +01 08 34.6 19.2 c 704
2009-02-21 09:46:08 C 12 49 29.43 +01 08 35.0 19.6 c 704
2009-02-21 10:03:22 C 12 49 31.67 +01 08 38.1 20.0 c 704
2009-02-21 10:21:05 C 12 49 33.93 +01 08 37.9 19.5 c 704
2009-02-21 10:38:12 C 12 49 36.15 +01 08 40.0 19.2 c 704
2009-02-22 10:15:57 C 12 52 51.42 +01 10 23.2 r H45
2009-02-22 10:19:03 C 12 52 51.80 +01 10 23.3 r H45
2009-02-22 10:20:53 C 12 52 52.06 +01 10 23.4 r H45
2009-02-22 10:22:47 C 12 52 52.31 +01 10 23.5 r H45
2009-02-22 10:24:56 C 12 52 52.58 +01 10 23.9 r H45
2009-02-22 10:26:41 C 12 52 52.81 +01 10 24.2 r H45
2009-02-23 10:28:38 C 12 56 11.82 +01 12 27.6 o H55
2009-02-23 10:33:23 C 12 56 12.45 +01 12 28.1 o H55
2009-02-23 10:38:08 C 12 56 13.06 +01 12 28.5 o H55
2009-02-23 10:43:20 C 12 56 13.73 +01 12 28.9 o H55
2009-02-26 10:00:26 C 13 06 05.31 +01 20 36.4 r 448
2009-02-26 10:08:44 C 13 06 06.37 +01 20 37.4 r 448
2009-02-26 10:17:03 C 13 06 07.46 +01 20 38.3 r 448
2009-02-26 10:25:20 C 13 06 08.54 +01 20 39.6 r 448
2009-02-26 10:34:14 C 13 06 09.68 +01 20 41.0 r 448
2009-02-27 07:46:12 C 13 09 06.59 +01 23 35.3 19.3 c 704
2009-02-27 08:02:04 C 13 09 08.59 +01 23 38.3 19.4 c 704
2009-02-27 08:17:57 C 13 09 10.67 +01 23 39.9 19.2 c 704
2009-02-27 08:33:54 C 13 09 12.67 +01 23 42.5 19.2 c 704
2009-02-27 08:51:50 C 13 09 15.03 +01 23 44.7 19.2 c 704
2009-03-03 10:30:25 C 13 22 35.03 +01 39 46.5 o H55