2009 RD4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6046072310 ± 5.15e-08
Semi-major axis (a)2.7179193833 AU ± 2.09e-08
Inclination (i)22.56644579° ± 2.07e-05
Long. of Asc. Node (Ω)8.26083059° ± 1.19e-05
Arg. of Perihelion (ω)10.35806455° ± 3.47e-05
Mean Anomaly (M)208.85387038° ± 1.36e-05
Mean Motion (n)0.2199669433°/day ± 2.54e-09
Perihelion dist (q)1.07464567 AU ± 1.40e-07
Aphelion dist (Q)4.36119310 AU ± 1.44e-07
Orbital Period4.48079274 yr ± 5.17e-08
Physical Parameters
H (abs. magnitude)20.48
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.375″
Uncertainty0
Orbit TypeAmor
MOID0.077798 AU
Observations Used69
Oppositions7
Arc Total2009-2018
First Observation Used2009-09-13
Last Observation Used2018-10-27
Observations (72)
Date Type RA Dec Mag Band Observatory
2009-09-13 16:03:46 C 23 11 46.78 -57 09 39.7 r E12
2009-09-13 16:23:36 C 23 11 43.98 -57 08 59.8 r E12
2009-09-13 17:02:22 C 23 11 38.46 -57 07 43.7 r E12
2009-09-13 17:03:27 C 23 11 38.12 -57 07 40.9 r E12
2009-09-13 17:05:38 C 23 11 37.99 -57 07 38.1 r E12
2009-09-14 16:52:38 C 23 08 31.05 -56 20 19.6 v D90
2009-09-14 17:11:11 C 23 08 28.37 -56 19 39.0 v D90
2009-09-14 17:48:14 C 23 08 23.12 -56 18 18.8 v D90
2009-09-15 14:14:12 C 23 05 43.03 -55 34 19.7 r E12
2009-09-15 14:19:13 C 23 05 42.28 -55 34 08.4 r E12
2009-09-15 15:58:29 C 23 05 28.20 -55 30 20.3 v D90
2009-09-15 16:16:57 C 23 05 25.42 -55 29 37.8 v D90
2009-09-15 16:35:24 C 23 05 22.73 -55 28 54.5 v D90
2009-09-15 16:53:50 C 23 05 20.14 -55 28 12.3 v D90
2009-09-18 11:56:08 C 22 56 27.697 -52 37 10.28 r E12
2009-09-18 12:01:16 C 22 56 26.93 -52 36 55.7 r E12
2009-09-22 12:00:30 C 22 43 50.31 -47 12 52.7 o 474
2009-09-22 12:01:29 C 22 43 50.18 -47 12 48.8 o 474
2009-09-22 12:04:29 C 22 43 49.75 -47 12 37.0 o 474
2009-09-22 12:05:49 C 22 43 49.56 -47 12 31.6 o 474
2009-09-24 13:58:08 C 22 37 35.00 -43 40 18.3 c D21
2009-09-24 14:02:36 C 22 37 34.35 -43 39 58.1 c D21
2009-09-24 14:07:07 C 22 37 33.71 -43 39 37.7 c D21
2009-09-26 01:13:51 C 22 33 19.36 -40 49 18.7 r I20
2009-09-26 01:21:18 C 22 33 18.34 -40 48 41.0 r I20
2009-09-26 01:28:33 C 22 33 17.35 -40 48 04.1 r I20
2009-10-05 02:39:42 C 22 10 55.62 -16 22 50.3 o H55
2009-10-05 02:42:28 C 22 10 55.34 -16 22 27.6 o H55
2009-10-05 02:44:23 C 22 10 55.15 -16 22 11.9 o H55
2009-10-05 02:47:12 C 22 10 54.86 -16 21 48.6 o H55
2009-10-07 11:04:46 C 22 06 23.317 -08 27 04.41 r E12
2009-10-07 11:11:16 C 22 06 22.724 -08 26 08.90 r E12
2009-10-10 19:53:49 C 22 00 52.88 +03 03 03.3 v 204
2009-10-10 19:58:22 C 22 00 52.55 +03 03 41.6 v 204
2009-10-10 20:02:20 C 22 00 52.24 +03 04 15.0 v 204
2009-10-10 20:06:25 C 22 00 51.95 +03 04 49.5 v 204
2009-10-10 20:11:00 C 22 00 51.61 +03 05 28.1 v 204
2009-10-13 21:19:49 C 21 56 52.44 +12 58 23.1 w 160
2009-10-13 21:23:49 C 21 56 52.20 +12 58 54.1 w 160
2009-10-13 21:27:00 C 21 56 52.01 +12 59 18.6 w 160
2009-10-15 06:47:29 C 21 55 21.744 +17 09 30.35 645
2009-10-15 06:48:41 C 21 55 21.681 +17 09 39.24 645
2009-10-15 06:51:04 C 21 55 21.552 +17 09 56.52 645
2009-10-15 06:52:16 C 21 55 21.494 +17 10 05.30 645
2009-10-16 01:43:39 C 21 54 40.97 +19 24 56.4 r 448
2009-10-16 01:50:31 C 21 54 40.64 +19 25 44.7 r 448
2009-10-16 01:56:21 C 21 54 40.32 +19 26 25.7 r 448
2009-10-16 18:53:20 C 21 54 02.64 +21 23 02.9 u A78
2009-10-16 18:59:19 C 21 54 02.34 +21 23 43.3 u A78
2009-10-16 19:07:08 C 21 54 01.93 +21 24 36.2 u A78