665429 (2009 KT21)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3325651714 ± 1.22e-08
Semi-major axis (a)1.6705022611 AU ± 1.36e-09
Inclination (i)6.94165852° ± 2.41e-06
Long. of Asc. Node (Ω)230.82966531° ± 9.97e-06
Arg. of Perihelion (ω)244.55849738° ± 1.23e-05
Mean Anomaly (M)323.52460251° ± 4.81e-06
Mean Motion (n)0.4565009382°/day ± 5.55e-10
Perihelion dist (q)1.11495139 AU ± 2.04e-08
Aphelion dist (Q)2.22605313 AU ± 2.05e-08
Orbital Period2.15908928 yr ± 2.63e-09
Physical Parameters
H (abs. magnitude)19.92
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.146″
Uncertainty0
Orbit TypeAmor
MOID0.170377 AU
Observations Used225
Oppositions9
Arc Total2009-2026
First Observation Used2009-05-29
Last Observation Used2026-03-02
Observations (255)
Date Type RA Dec Mag Band Observatory
2009-05-29 07:23:32 C 16 05 36.85 -17 01 43.6 r G96
2009-05-29 07:31:28 C 16 05 36.34 -17 01 40.8 r G96
2009-05-29 07:39:31 C 16 05 35.88 -17 01 37.2 r G96
2009-05-29 07:59:26 C 16 05 34.55 -17 01 30.5 r G96
2009-05-29 08:09:04 C 16 05 33.92 -17 01 26.9 r G96
2009-05-29 08:18:40 C 16 05 33.39 -17 01 25.0 r G96
2009-05-29 08:28:03 C 16 05 32.76 -17 01 20.2 r G96
2009-05-30 06:43:18 C 16 04 11.42 -16 53 29.4 o H01
2009-05-30 06:53:07 C 16 04 10.81 -16 53 26.0 o H01
2009-05-30 07:03:27 C 16 04 10.15 -16 53 22.3 o H01
2009-05-30 07:30:57 C 16 04 08.42 -16 53 12.7 o H01
2009-05-30 08:01:53 C 16 04 06.57 -16 53 03.1 o 291
2009-05-30 08:09:10 C 16 04 06.04 -16 52 58.6 o 291
2009-06-01 04:34:58 C 16 01 27.66 -16 37 40.3 o H55
2009-06-01 04:36:02 C 16 01 27.61 -16 37 40.3 r H55
2009-06-01 05:01:44 C 16 01 25.98 -16 37 31.8 r H55
2009-06-01 05:02:28 C 16 01 25.88 -16 37 30.8 o H55
2009-06-01 07:06:32 C 16 01 18.56 -16 36 48.6 o H01
2009-06-01 07:13:55 C 16 01 18.10 -16 36 46.0 o H01
2009-06-01 07:30:07 C 16 01 17.12 -16 36 40.7 o H01
2009-06-01 07:37:57 C 16 01 16.64 -16 36 38.0 o H01
2009-06-01 07:59:40 C 16 01 15.38 -16 36 30.4 r G96
2009-06-01 08:08:24 C 16 01 14.84 -16 36 27.6 r G96
2009-06-01 08:17:24 C 16 01 14.34 -16 36 24.6 r G96
2009-06-01 08:26:20 C 16 01 13.72 -16 36 21.2 r G96
2009-06-13 04:56:25 C 15 46 57.34 -15 12 42.3 o 291
2009-06-13 05:02:10 C 15 46 57.01 -15 12 40.9 o 291
2009-06-13 05:08:07 C 15 46 56.73 -15 12 38.7 o 291
2009-06-19 06:05:19 C 15 41 42.94 -14 41 15.0 o 291
2009-06-19 06:21:08 C 15 41 42.49 -14 41 11.1 o 291
2009-06-24 05:37:50 C 15 38 32.29 -14 21 31.9 o 291
2009-06-24 05:46:06 C 15 38 32.06 -14 21 31.9 o 291
2009-06-24 05:56:11 C 15 38 31.78 -14 21 30.8 o 291
2011-03-26 15:43:37 C 12 45 13.74 -23 02 52.1 r E12
2011-03-26 15:58:40 C 12 45 13.05 -23 02 37.3 r E12
2011-03-26 16:13:43 C 12 45 12.39 -23 02 22.0 r E12
2011-03-26 16:28:52 C 12 45 11.72 -23 02 07.3 r E12
2011-03-28 14:19:26 C 12 43 26.27 -22 17 23.4 o 300
2011-03-28 14:24:05 C 12 43 26.10 -22 17 19.8 o 300
2011-03-28 14:28:45 C 12 43 25.89 -22 17 15.0 o 300
2011-03-28 14:33:24 C 12 43 25.69 -22 17 10.7 o 300
2011-03-28 14:38:04 C 12 43 25.45 -22 17 06.0 o 300
2011-03-31 01:10:38 C 12 41 13.17 -21 17 53.4 u I20
2011-03-31 01:30:51 C 12 41 12.35 -21 17 33.1 u I20
2011-04-02 10:18:50 C 12 39 07.753 -20 20 08.21 L F51
2011-04-02 10:33:33 C 12 39 07.150 -20 19 53.31 L F51
2011-04-02 10:50:13 C 12 39 06.445 -20 19 36.11 L F51
2011-04-02 11:06:04 C 12 39 05.777 -20 19 19.83 L F51
2011-04-12 05:47:56 C 12 32 09.71 -16 24 51.1 19.0 c 704
2011-04-12 06:04:39 C 12 32 09.28 -16 24 34.2 19.5 c 704