451124 (2009 KC3)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6983714945 ± 5.28e-09
Semi-major axis (a)3.2097701784 AU ± 3.78e-08
Inclination (i)10.00822134° ± 1.55e-06
Long. of Asc. Node (Ω)340.11424507° ± 3.18e-06
Arg. of Perihelion (ω)337.25629695° ± 3.37e-06
Mean Anomaly (M)300.38725832° ± 1.89e-05
Mean Motion (n)0.1713962712°/day ± 3.03e-09
Perihelion dist (q)0.96815818 AU ± 2.04e-08
Aphelion dist (Q)5.45138217 AU ± 6.64e-08
Orbital Period5.75057016 yr ± 1.02e-07
Physical Parameters
H (abs. magnitude)18.08
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.299″
Uncertainty0
Orbit TypeApollo
MOID0.007242 AU
Observations Used426
Radar Obs Used19
Oppositions1
Arc Total2009-2026
First Observation Used2009-05-04
Last Observation Used2026-02-25
Observations (445)
Date Type RA Dec Mag Band Observatory
2009-11-18 18:51:04 C 01 22 53.12 +32 09 16.0 r J75
2009-11-18 19:08:04 C 01 22 53.25 +32 09 08.5 r J75
2009-11-21 02:56:44 C 01 23 36.78 +31 42 42.0 r 703
2009-11-21 03:06:50 C 01 23 36.85 +31 42 37.6 r 703
2009-11-21 03:16:57 C 01 23 37.03 +31 42 32.4 r 703
2009-11-21 03:32:11 C 01 23 37.24 +31 42 25.0 r 703
2009-11-23 04:36:06 C 01 24 24.61 +31 20 23.1 19.4 c 704
2009-11-23 04:54:04 C 01 24 24.89 +31 20 15.7 19.5 c 704
2009-11-23 05:12:02 C 01 24 25.15 +31 20 08.2 19.6 c 704
2009-11-23 05:30:00 C 01 24 25.35 +31 19 59.9 19.9 c 704
2009-11-23 05:47:57 C 01 24 25.64 +31 19 51.1 19.9 c 704
2010-01-10 01:36:22 C 02 09 30.39 +27 25 34.8 o H21
2010-01-10 02:04:55 C 02 09 31.88 +27 25 34.2 o H21
2010-01-10 02:31:01 C 02 09 33.18 +27 25 33.6 o H21
2010-01-30 21:04:12 S 02 37 54.353 +27 34 36.88 L C51
2010-01-31 00:14:43 S 02 38 05.63 +27 34 44.2 L C51
2010-01-31 03:25:15 S 02 38 16.92 +27 34 56.4 L C51
2010-01-31 06:35:46 S 02 38 28.28 +27 35 05.8 L C51
2010-01-31 08:11:07 S 02 38 34.03 +27 35 11.6 L C51
2010-01-31 09:46:28 S 02 38 39.931 +27 35 15.68 L C51
2010-01-31 12:56:59 S 02 38 51.16 +27 35 25.6 L C51
2010-01-31 16:07:30 S 02 39 02.54 +27 35 37.9 L C51
2010-01-31 17:42:51 S 02 39 08.21 +27 35 41.8 L C51
2010-02-01 00:03:53 S 02 39 31.01 +27 36 02.8 L C51
2010-02-01 03:14:24 S 02 39 42.41 +27 36 12.3 L C51
2010-02-01 06:24:55 S 02 39 53.786 +27 36 27.04 L C51
2014-03-05 09:50:06 C 11 23 21.36 +01 36 04.9 o 695
2014-03-05 10:01:52 C 11 23 20.91 +01 36 06.8 o 695
2014-03-05 10:25:20 C 11 23 20.09 +01 36 11.0 o 695
2015-10-16 10:11:07 C 06 20 35.62 +36 32 56.7 o 291
2015-10-16 10:42:49 C 06 20 35.51 +36 33 04.2 o 291
2015-11-04 08:44:17 C 06 11 27.40 +38 05 57.2 u H21
2015-11-04 09:05:25 C 06 11 26.59 +38 06 01.4 u H21
2015-11-04 09:28:09 C 06 11 25.71 +38 06 05.6 u H21
2015-11-23 05:40:13 C 05 47 36.77 +39 01 25.0 o 695
2015-11-23 05:52:37 C 05 47 35.95 +39 01 26.1 o 695
2015-11-23 06:05:01 C 05 47 35.13 +39 01 26.6 o 695
2026-02-22 07:00:57 C 13 13 13.330 -14 29 24.10 V 807
2026-02-22 07:27:09 C 13 13 12.920 -14 29 27.00 V 807
2026-02-22 07:53:22 C 13 13 12.560 -14 29 29.50 V 807
2026-02-24 06:40:19 C 13 12 31.470 -14 33 52.20 V 807
2026-02-24 07:12:49 C 13 12 30.950 -14 33 55.50 V 807
2026-02-24 07:45:21 C 13 12 30.410 -14 33 58.00 V 807
2026-02-25 05:19:01 C 13 12 09.500 -14 35 49.80 V 807
2026-02-25 05:59:39 C 13 12 08.770 -14 35 52.40 V 807
Radar Observations (24)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2009-08-22 17:40:00 166378.75 1 Hz 8560 -14 -14
2009-08-22 18:50:00 50194420.27 10 us 8560 -14 -14
2009-08-22 19:50:00 50130850.38 4 us 8560 -14 -14
2009-08-22 20:50:50 50069982.15 3 us 8560 -14 -14
2009-08-22 20:50:50 138811.733 2.2 Hz 8560 -14 -14
2009-08-22.736111 16637875 100 Hz 8560 253 253
2009-08-22.784722 5019442027 10000 us 8560 253 253
2009-08-22.826389 5013085038 4000 us 8560 253 253
2009-08-23 13:50:00 49188655.76 4 us 8560 -14 -14
2009-08-23 14:20:49 49165728.7 3 us 8560 -14 -14
2009-08-23 14:20:49 104100.066 2.2 Hz 8560 -14 -14
2009-08-23.576389 4918865576 4000 us 8560 253 253
2009-08-25 12:40:00 49198900.4 4 us 8560 -14 -14
2009-08-25 14:20:49 49255455.78 3 us 8560 -14 -14
2009-08-25 14:20:49 -87049.065 2.2 Hz 8560 -14 -14
2009-08-25.527778 4919890040 4000 us 8560 253 253
2009-08-26 12:41:00 50556530.23 3 us 2380 -1 -1
2009-08-26 12:41:00 -50087.459 0.6 Hz 2380 -1 -1
2009-08-27 12:23:00 52743040.65 3 us 2380 -1 -1
2009-08-27 12:23:00 -71805.554 0.6 Hz 2380 -1 -1
2009-08-28 12:06:00 55649852.25 3 us 2380 -1 -1
2009-08-28 12:06:00 -90448.274 0.6 Hz 2380 -1 -1
2009-08-29 11:42:00 59144816.97 3 us 2380 -1 -1
2009-08-29 11:42:00 -105658.547 0.6 Hz 2380 -1 -1
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)