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
2009-06-02 05:59:33 C 15 08 13.99 -03 49 44.7 r 448
2009-06-02 06:33:52 C 15 08 14.35 -03 50 04.2 r 448
2012-06-25 07:45:16 C 20 45 19.32 -13 59 12.5 o 291
2012-06-25 08:09:37 C 20 45 18.36 -13 59 18.1 o 291
2012-06-25 08:33:10 C 20 45 17.34 -13 59 23.1 o 291
2020-01-04 03:27:19 C 05 13 33.17 +15 38 27.3 V V06
2020-01-04 03:30:44 C 05 13 32.97 +15 38 27.7 V V06
2020-01-04 03:34:09 C 05 13 32.76 +15 38 27.7 V V06
2020-01-04 03:37:35 C 05 13 32.51 +15 38 28.1 V V06
2020-01-23 08:20:18 C 04 52 56.226 +16 45 18.35 U F52
2020-01-23 08:58:56 C 04 52 55.171 +16 45 26.07 U F52
2020-01-23 09:18:16 C 04 52 54.639 +16 45 29.90 U F52