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
1999-02-22 01:37:26 C 08 54 53.58 +13 14 04.9 i 726
1999-02-22 06:06:14 C 08 54 08.97 +13 19 46.1 z 711
1999-02-22 06:12:11 C 08 54 07.96 +13 19 53.5 z 711
1999-02-23 19:44:09 C 08 47 51.91 +14 07 58.3 z 108
1999-02-23 19:49:56 C 08 47 50.94 +14 08 06.4 z 108
1999-02-23 19:55:32 C 08 47 49.89 +14 08 13.0 z 108
1999-02-24 19:19:12 C 08 43 41.02 +14 39 52.7 046
1999-02-24 19:21:04 C 08 43 40.67 +14 39 55.7 046
1999-02-24 19:24:04 C 08 43 40.16 +14 39 59.5 046
1999-02-24 19:25:37 C 08 43 39.83 +14 40 01.9 046
1999-02-24 22:17:40 C 08 43 07.53 +14 44 02.7 z 587
1999-02-24 22:21:27 C 08 43 06.85 +14 44 07.9 z 587
1999-02-25 11:50:20 C 08 40 38.44 +15 03 10.3 z 402
1999-02-25 11:52:09 C 08 40 38.12 +15 03 12.6 z 402
1999-02-25 11:53:57 C 08 40 37.75 +15 03 15.3 z 402
1999-02-25 14:17:48 C 08 40 09.54 +15 06 40.9 z 900
1999-02-25 14:31:05 C 08 40 06.93 +15 06 59.5 z 900
1999-02-26 20:26:51 C 08 34 20.81 +15 50 38.7 046
1999-02-26 20:28:14 C 08 34 20.50 +15 50 40.3 046
1999-02-26 20:29:26 C 08 34 20.29 +15 50 42.7 046
1999-02-26 20:30:34 C 08 34 20.03 +15 50 44.3 046
1999-02-26 20:32:27 C 08 34 19.66 +15 50 46.3 046
1999-03-01 04:41:52 C 08 22 32.30 +17 18 42.6 i 739
1999-03-01 04:47:58 C 08 22 30.89 +17 18 50.7 i 739
1999-03-02 07:43:06 C 08 16 23.96 +18 03 29.4 658
1999-03-02 07:44:59 C 08 16 23.48 +18 03 33.1 658
1999-03-02 07:49:08 C 08 16 22.57 +18 03 40.3 658
1999-03-03 12:04:29 C 08 09 38.01 +18 52 32.3 z 402
1999-03-03 12:06:47 C 08 09 37.42 +18 52 35.7 z 402
1999-03-03 12:09:07 C 08 09 36.82 +18 52 40.0 z 402
1999-03-03 20:00:28 C 08 07 40.08 +19 06 22.6 118
1999-03-03 20:02:06 C 08 07 39.64 +19 06 25.6 118
1999-03-03 20:05:02 C 08 07 38.91 +19 06 30.6 118
1999-03-03 22:07:07 C 08 07 07.44 +19 10 06.5 d 046
1999-03-03 22:08:26 C 08 07 07.11 +19 10 08.8 d 046
1999-03-03 22:10:11 C 08 07 06.63 +19 10 12.1 d 046
1999-03-03 22:11:07 C 08 07 06.39 +19 10 13.4 d 046
1999-03-05 19:45:26 C 07 55 11.34 +20 33 21.0 z 151
1999-03-05 19:49:16 C 07 55 10.28 +20 33 28.4 z 151
1999-03-05 19:52:00 C 07 55 09.52 +20 33 33.0 z 151
1999-03-05 19:54:26 C 07 55 08.82 +20 33 37.7 z 151
1999-03-06 06:52:35 C 07 52 04.66 +20 54 22.3 z 719
1999-03-06 06:55:02 C 07 52 03.95 +20 54 26.6 z 719
1999-03-06 18:16:20 C 07 48 53.96 +21 15 52.7 d 046
1999-03-06 18:17:36 C 07 48 53.60 +21 15 55.0 d 046
1999-03-06 18:18:32 C 07 48 53.33 +21 15 56.7 d 046
1999-03-06 18:19:30 C 07 48 53.04 +21 15 58.5 d 046
1999-03-08 18:30:18 C 07 34 25.82 +22 49 47.3 118
1999-03-08 18:31:51 C 07 34 25.34 +22 49 50.2 118
1999-03-08 18:34:16 C 07 34 24.55 +22 49 55.2 118
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)