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
2013-09-14 05:12:09 C 21 30 57.42 -18 30 53.0 r Y00
2013-09-15 04:33:47 C 21 33 52.28 -18 28 17.8 r W11
2013-09-15 04:39:59 C 21 33 52.98 -18 28 16.9 r W11
2013-09-22 04:45:11 C 21 50 23.87 -17 59 26.6 q 448
2013-09-22 04:50:20 C 21 50 24.25 -17 59 25.5 q 448
2013-09-22 04:57:48 C 21 50 24.83 -17 59 24.2 q 448
2013-09-22 05:09:16 C 21 50 25.70 -17 59 21.7 q 448
2013-09-22 05:17:23 C 21 50 26.30 -17 59 20.2 q 448
2013-09-24 07:35:17 C 21 54 23.631 -17 49 08.45 L F51
2013-09-24 07:50:35 C 21 54 24.684 -17 49 05.29 L F51
2013-09-26 01:32:10 C 21 57 26.92 -17 40 00.2 r Y00
2013-09-26 01:38:17 C 21 57 27.44 -17 39 59.0 r Y00
2013-09-26 01:46:28 C 21 57 28.03 -17 39 56.9 r Y00
2013-09-28 04:29:59 C 22 00 57.68 -17 29 00.6 q 448
2013-09-28 04:33:16 C 22 00 57.83 -17 28 59.6 q 448
2013-09-28 04:37:47 C 22 00 58.15 -17 28 59.0 q 448
2013-09-28 04:44:47 C 22 00 58.54 -17 28 57.3 q 448
2013-09-28 04:52:48 C 22 00 59.02 -17 28 55.3 q 448
2013-09-29 04:54:41 C 22 02 33.92 -17 23 24.6 q 703
2013-09-29 05:03:32 C 22 02 34.43 -17 23 22.1 q 703
2013-09-29 05:12:23 C 22 02 35.00 -17 23 20.8 q 703
2013-09-29 05:21:10 C 22 02 35.49 -17 23 18.2 q 703
2013-10-06 02:56:43 C 22 12 35.56 -16 42 10.3 r Y00
2013-10-06 03:06:18 C 22 12 36.12 -16 42 08.3 r Y00
2013-10-06 03:15:27 C 22 12 36.65 -16 42 05.5 r Y00
2013-10-06 03:50:39 C 22 12 39.52 -16 42 10.8 q 448
2013-10-06 04:00:29 C 22 12 40.10 -16 42 07.9 q 448
2013-10-06 04:10:23 C 22 12 40.58 -16 42 05.6 q 448
2013-10-06 07:24:20 C 22 12 51.672 -16 41 11.99 L F51
2013-10-06 07:44:51 C 22 12 52.745 -16 41 06.57 L F51
2013-10-06 08:05:21 C 22 12 53.820 -16 41 01.16 L F51
2013-10-06 08:25:54 C 22 12 54.895 -16 40 55.72 L F51
2013-10-13 02:59:52 C 22 21 51.74 -15 56 09.7 V G45
2013-10-13 03:17:36 C 22 21 52.60 -15 56 04.7 V G45
2013-10-13 03:39:59 C 22 21 53.72 -15 55 58.7 V G45
2013-10-13 04:09:37 C 22 21 55.22 -15 55 50.0 V G45
2013-10-13 04:32:32 C 22 21 56.36 -15 55 43.3 V G45
2013-10-13 04:54:46 C 22 21 57.47 -15 55 36.6 V G45
2013-10-31 02:43:41 C 22 44 21.99 -13 40 18.6 q 703
2013-10-31 02:56:55 C 22 44 22.66 -13 40 17.3 q 703
2013-10-31 03:10:11 C 22 44 23.27 -13 40 12.2 q 703
2013-10-31 03:23:27 C 22 44 23.95 -13 40 08.1 q 703
2016-10-24 08:18:07 C 04 32 41.55 +13 56 58.2 u H21
2016-10-24 08:29:17 C 04 32 41.10 +13 56 56.1 u H21
2016-10-24 08:41:24 C 04 32 40.61 +13 56 53.6 u H21
2016-10-29 08:59:30 C 04 27 38.66 +13 34 37.4 u H21
2016-10-29 09:18:19 C 04 27 37.81 +13 34 33.6 u H21
2016-10-29 09:42:09 C 04 27 36.73 +13 34 29.3 u H21
2016-11-04 07:23:24 C 04 20 53.35 +13 07 27.8 u H21
2016-11-04 07:41:04 C 04 20 52.43 +13 07 24.5 u H21
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)