137126 (1999 CF9)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6008300378 ± 2.00e+00
Semi-major axis (a)1.7700615799 AU ± 3.00e+00
Inclination (i)5.54396360° ± 4.00e+00
Long. of Asc. Node (Ω)156.84544990° ± 5.00e+00
Arg. of Perihelion (ω)90.61272758° ± 6.00e+00
Mean Anomaly (M)88.13582052° ± 4.25e-07
Mean Motion (n)0.4185330061°/day ± 1.06e+00
Perihelion dist (q)0.70655541 AU ± 3.74e+00
Aphelion dist (Q)2.83356775 AU ± 5.97e+00
Orbital Period2.35495473 yr ± 5.99e+00
NGA Modelr2
A2-1.50216202e-06 AU/d²
Physical Parameters
H (abs. magnitude)18.08
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.304″
Uncertainty0
Orbit TypeApollo
MOID0.017566 AU
Observations Used1164
Oppositions15
Arc Total1999-2025
First Observation Used1999-01-15
Last Observation Used2025-12-24
Observations (1221)
Date Type RA Dec Mag Band Observatory
1999-02-15 07:01:19 C 09 17 15.56 +10 22 31.6 a 658
1999-02-15 11:18:10 C 09 16 46.11 +10 26 53.0 z 428
1999-02-15 11:23:02 C 09 16 45.46 +10 26 57.9 z 428
1999-02-15 12:36:38 C 09 16 36.33 +10 28 05.5 422
1999-02-15 12:38:36 C 09 16 36.10 +10 28 07.4 422
1999-02-15 12:41:17 C 09 16 35.75 +10 28 09.8 422
1999-02-15 12:44:58 C 09 16 35.20 +10 28 11.5 z 428
1999-02-15 12:47:45 C 09 16 34.91 +10 28 14.1 z 428
1999-02-15 18:10:14 C 09 15 57.39 +10 32 31.3 z 151
1999-02-15 18:21:16 C 09 15 56.09 +10 32 40.5 z 151
1999-02-15 18:25:03 C 09 15 55.61 +10 32 44.2 z 151
1999-02-15 18:30:29 C 09 15 54.96 +10 32 49.7 z 151
1999-02-15 18:45:27 C 09 15 53.04 +10 33 02.9 557
1999-02-15 18:47:18 C 09 15 52.81 +10 33 04.7 557
1999-02-15 18:49:08 C 09 15 52.60 +10 33 06.2 557
1999-02-15 18:49:37 C 09 15 52.58 +10 33 07.3 046
1999-02-15 18:51:07 C 09 15 52.40 +10 33 08.5 046
1999-02-15 18:52:44 C 09 15 52.19 +10 33 10.3 046
1999-02-15 18:54:11 C 09 15 52.03 +10 33 11.5 046
1999-02-16 04:45:22 C 09 14 40.46 +10 42 23.0 17.4 a 704
1999-02-16 05:15:19 C 09 14 36.40 +10 42 50.4 a 704
1999-02-16 05:45:18 C 09 14 32.57 +10 43 18.8 a 704
1999-02-16 06:15:23 C 09 14 28.69 +10 43 46.1 a 704
1999-02-16 06:45:31 C 09 14 24.79 +10 44 14.4 a 704
1999-02-16 07:13:07 C 09 14 21.32 +10 44 42.5 16.5 a 696
1999-02-16 07:30:44 C 09 14 18.90 +10 44 57.8 z 719
1999-02-16 07:37:05 C 09 14 18.10 +10 45 03.5 z 719
1999-02-16 08:40:35 C 09 14 10.04 +10 46 03.6 16.5 a 696
1999-02-16 13:11:26 C 09 13 37.70 +10 50 47.3 426
1999-02-16 13:15:11 C 09 13 37.21 +10 50 50.9 426
1999-02-16 13:18:45 C 09 13 36.75 +10 50 54.2 426
1999-02-16 13:21:33 C 09 13 36.40 +10 50 27.7 z 402
1999-02-16 13:23:23 C 09 13 36.16 +10 50 29.7 z 402
1999-02-16 13:25:12 C 09 13 35.92 +10 50 31.3 z 402
1999-02-18 22:36:03 C 09 06 04.56 +11 47 59.4 z 587
1999-02-18 22:39:13 C 09 06 04.13 +11 48 03.0 z 587
1999-02-19 01:52:10 C 09 05 36.15 +11 51 27.8 z 104
1999-02-19 01:54:09 C 09 05 35.80 +11 51 30.4 z 104
1999-02-19 01:57:19 C 09 05 35.41 +11 51 33.7 z 104
1999-02-19 09:16:18 C 09 04 33.57 +11 59 32.8 z 719
1999-02-19 09:32:17 C 09 04 31.21 +11 59 49.9 z 719
1999-02-19 12:49:20 C 09 04 04.96 +12 03 26.3 z 402
1999-02-19 12:51:08 C 09 04 04.68 +12 03 28.4 z 402
1999-02-19 12:52:58 C 09 04 04.41 +12 03 30.3 z 402
1999-02-21 03:26:10 C 08 58 21.86 +12 47 19.7 i 726
1999-02-21 03:31:11 C 08 58 21.10 +12 47 26.5 i 726
1999-02-21 03:36:11 C 08 58 20.32 +12 47 31.4 i 726
1999-02-22 01:22:27 C 08 54 56.05 +13 13 44.9 i 726
1999-02-22 01:27:27 C 08 54 55.24 +13 13 51.3 i 726
1999-02-22 01:32:26 C 08 54 54.47 +13 13 58.0 i 726
Radar Observations (12)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2013-08-21 03:10:00 319773.944 1.5 Hz 8560 -14 -14
2013-08-21 04:00:00 66346826.79 10 us 8560 -14 -14
2013-08-21 04:30:00 66282046.75 2 us 8560 -14 -14
2013-08-22 03:40:00 63921527.254 4 us 8560 -14 -14
2013-08-22 04:20:00 139016.798 2 Hz 8560 -14 -14
2013-08-23 03:20:00 63238391.082 2 us 8560 -14 -14
2013-08-23 03:40:00 -33068.671 1.5 Hz 8560 -14 -14
2013-08-25 01:20:00 66987518.311 2 us 8560 -14 -14
2025-03-08 09:30:00 -51357.8 2 Hz 8560 -14 -14
2025-03-08 10:20:00 52842415 2 us 8560 -14 -14
2025-03-08 10:50:00 52855887 1 us 8560 -14 -14
2025-03-10 16:10:00 59591765 1 us 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m)