22771 (1999 CU3)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5242253236 ± 2.00e+00
Semi-major axis (a)1.5758804334 AU ± 3.00e+00
Inclination (i)11.40259721° ± 4.00e+00
Long. of Asc. Node (Ω)338.90098952° ± 5.00e+00
Arg. of Perihelion (ω)305.84219851° ± 6.00e+00
Mean Anomaly (M)96.21237716° ± 6.31e-05
Mean Motion (n)0.4982271401°/day ± 1.42e+00
Perihelion dist (q)0.74976400 AU ± 3.46e+00
Aphelion dist (Q)2.40199686 AU ± 5.55e+00
Orbital Period1.97826695 yr ± 5.65e+00
NGA Modelr2
A2-1.41471470e-06 AU/d²
Physical Parameters
H (abs. magnitude)16.96
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.240″
Uncertainty0
Orbit TypeApollo
MOID0.064295 AU
Observations Used2581
Gaia Obs Used92
Oppositions9
Arc Total1999-2026
First Observation Used1999-02-10
Last Observation Used2026-01-07
Observations (2691)
Date Type RA Dec Mag Band Observatory
2009-10-30 00:17:23 C 02 35 03.32 +44 46 18.3 17.9 r 084
2009-10-30 00:21:43 C 02 35 02.70 +44 46 16.4 17.5 r 084
2009-10-31 01:28:16 C 02 31 44.91 +44 30 58.7 17.6 r 084
2009-11-09 06:47:10 C 02 07 02.80 +41 51 43.7 17.4 c 704
2009-11-09 07:07:56 C 02 07 00.80 +41 51 27.3 18.4 c 704
2009-11-09 07:28:43 C 02 06 58.74 +41 51 10.8 18.8 c 704
2009-11-09 08:10:45 C 02 06 54.64 +41 50 36.7 18.5 c 704
2009-11-10 05:58:59 C 02 04 56.25 +41 33 21.1 18.6 c 704
2009-11-10 06:16:35 C 02 04 54.65 +41 33 07.1 18.6 c 704
2009-11-10 06:34:12 C 02 04 52.95 +41 32 52.8 18.3 c 704
2009-11-10 06:51:54 C 02 04 51.31 +41 32 38.4 18.1 c 704
2009-11-10 07:09:30 C 02 04 49.67 +41 32 24.7 17.7 c 704
2009-11-19 18:06:56 C 01 48 58.50 +38 29 59.2 v 160
2009-11-19 18:10:46 C 01 48 58.29 +38 29 56.0 v 160
2009-11-19 18:14:36 C 01 48 58.06 +38 29 53.4 v 160
2009-11-21 05:14:16 C 01 47 14.53 +38 02 34.2 r 703
2009-11-21 05:22:54 C 01 47 14.13 +38 02 26.8 r 703
2009-11-21 05:31:08 C 01 47 13.70 +38 02 20.7 r 703
2009-11-21 05:39:14 C 01 47 13.30 +38 02 13.9 r 703
2009-11-21 05:47:17 C 01 47 12.91 +38 02 07.9 r 703
2009-11-24 04:54:46 C 01 44 16.91 +37 07 56.0 19.4 c 704
2009-11-24 05:12:29 C 01 44 16.21 +37 07 42.9 19.0 c 704
2009-11-24 05:30:24 C 01 44 15.46 +37 07 29.8 18.6 c 704
2009-11-24 05:48:14 C 01 44 14.79 +37 07 15.9 18.5 c 704
2009-11-25 05:26:37 C 01 43 25.93 +36 49 45.3 r G96
2009-11-25 05:32:42 C 01 43 25.71 +36 49 40.7 r G96
2009-11-25 05:38:36 C 01 43 25.46 +36 49 36.3 r G96
2009-11-25 05:44:33 C 01 43 25.28 +36 49 31.9 r G96
2009-11-26 15:54:50 C 01 42 22.89 +36 24 41.0 19.2 o C20
2009-11-26 16:47:20 C 01 42 21.27 +36 24 03.4 19.2 o C20
2009-11-26 17:47:27 C 01 42 19.44 +36 23 20.9 18.8 o C20
2011-01-02 10:35:16 C 11 31 51.81 +08 11 23.3 r 703
2011-01-02 10:46:08 C 11 31 52.03 +08 11 20.2 r 703
2011-01-02 10:57:05 C 11 31 52.28 +08 11 17.0 r 703
2011-01-02 11:08:07 C 11 31 52.50 +08 11 13.4 r 703
2011-01-08 11:03:16 C 11 34 56.53 +07 38 38.7 r G96
2011-01-08 11:13:23 C 11 34 56.78 +07 38 35.6 r G96
2011-01-08 11:23:23 C 11 34 56.92 +07 38 33.6 r G96
2011-01-08 11:33:31 C 11 34 57.10 +07 38 31.4 r G96
2011-01-25 10:27:18 C 11 37 14.45 +06 26 41.6 o 691
2011-01-25 11:02:46 C 11 37 14.08 +06 26 36.5 o 691
2011-01-25 11:28:15 C 11 37 13.80 +06 26 33.2 o 691
2011-01-28 11:44:32 C 11 36 23.75 +06 17 24.4 19.1 c 704
2011-01-28 12:03:41 C 11 36 23.39 +06 17 22.5 19.2 c 704
2011-01-28 12:23:47 C 11 36 23.07 +06 17 19.8 19.4 c 704
2011-01-28 12:43:20 C 11 36 22.67 +06 17 16.0 19.5 c 704
2011-01-30 10:13:44 C 11 35 37.46 +06 12 10.0 19.1 c 704
2011-01-30 10:32:54 C 11 35 37.00 +06 12 07.5 19.3 c 704
2011-01-30 10:51:59 C 11 35 36.55 +06 12 05.5 19.5 c 704
2011-01-30 11:12:52 C 11 35 36.18 +06 12 03.7 19.1 c 704
Radar Observations (6)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2001-09-25 20:29:00 -7944.261 1 Hz 2380 -1 -1
2001-09-25 20:58:00 113734203 8 us 2380 -1 -1
2001-09-25 21:33:00 113743141.8 1 us 2380 -1 -1
2003-09-10 17:58:00 89312736.8 4 us 2380 -1 -1
2003-09-11 17:49:00 83379287.1 1 us 2380 -1 -1
2003-09-12 18:02:00 77998936.49 1 us 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)