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
2011-04-05 21:42:38 C 09 16 52.16 +05 03 16.2 c A24
2011-04-06 20:26:58 C 09 14 45.04 +04 58 42.1 c A24
2011-04-06 20:28:02 C 09 14 44.93 +04 58 41.9 c A24
2011-04-06 20:55:32 C 09 14 42.31 +04 58 36.3 c A24
2011-04-06 21:23:43 C 09 14 39.63 +04 58 30.4 c A24
2011-04-06 21:51:34 C 09 14 36.97 +04 58 24.8 c A24
2011-04-06 21:52:37 C 09 14 36.86 +04 58 24.3 c A24
2011-04-07 20:26:44 C 09 12 34.33 +04 53 40.0 c A24
2011-04-07 20:27:46 C 09 12 34.25 +04 53 38.5 c A24
2011-04-08 18:59:34 C 09 10 35.32 +04 48 42.8 r 106
2011-04-08 19:17:18 C 09 10 33.73 +04 48 38.9 r 106
2011-04-08 19:35:03 C 09 10 32.12 +04 48 34.7 r 106
2011-04-08 19:52:47 C 09 10 30.51 +04 48 31.2 r 106
2011-04-09 20:34:54 C 09 08 23.90 +04 42 51.8 c A24
2011-04-09 20:35:57 C 09 08 23.82 +04 42 51.8 c A24
2011-04-09 20:58:05 C 09 08 21.88 +04 42 46.5 c A24
2011-04-09 21:21:14 C 09 08 19.87 +04 42 41.1 c A24
2011-04-09 21:43:22 C 09 08 17.94 +04 42 35.6 c A24
2011-04-09 21:44:24 C 09 08 17.84 +04 42 35.6 c A24
2011-04-10 20:53:48 C 09 06 23.33 +04 37 04.3 c A24
2011-04-10 20:54:50 C 09 06 23.27 +04 37 04.1 c A24
2011-04-10 21:17:15 C 09 06 21.34 +04 36 58.6 c A24
2011-04-10 21:40:43 C 09 06 19.40 +04 36 52.7 c A24
2011-04-10 22:03:08 C 09 06 17.46 +04 36 46.7 c A24
2011-04-10 22:04:09 C 09 06 17.42 +04 36 47.0 c A24
2011-04-11 02:18:55 C 09 05 57.29 +04 35 47.9 t H47
2011-04-11 02:30:52 C 09 05 56.23 +04 35 45.0 t H47
2011-04-11 02:46:52 C 09 05 54.89 +04 35 41.1 t H47
2011-04-28 03:16:56 C 08 41 45.74 +02 25 27.3 18.1 c 704
2011-04-28 03:32:45 C 08 41 45.09 +02 25 20.8 18.2 c 704
2011-04-28 03:48:43 C 08 41 44.26 +02 25 12.8 18.1 c 704
2011-04-28 04:04:15 C 08 41 43.55 +02 25 07.1 18.5 c 704
2011-05-03 03:46:29 C 08 37 23.77 +01 36 16.2 r 703
2011-05-03 03:51:03 C 08 37 23.55 +01 36 14.0 r 703
2011-05-03 04:00:19 C 08 37 23.26 +01 36 09.6 r 703
2011-05-03 04:03:37 C 08 37 23.12 +01 36 09.0 r 703
2011-05-03 04:12:44 C 08 37 22.80 +01 36 05.2 r 703
2011-05-03 04:16:05 C 08 37 22.65 +01 36 03.2 r 703
2011-05-03 04:25:15 C 08 37 22.40 +01 35 59.7 r 703
2011-10-21 02:47:43 C 03 48 34.40 +46 00 08.9 o C60
2011-10-21 02:49:22 C 03 48 34.18 +46 00 09.2 o C60
2011-10-21 02:51:01 C 03 48 33.94 +46 00 09.1 o C60
2011-10-21 02:52:40 C 03 48 33.80 +46 00 09.2 o C60
2011-10-21 02:54:20 C 03 48 33.46 +46 00 09.6 o C60
2011-10-21 02:55:58 C 03 48 33.26 +46 00 09.6 o C60
2011-11-19 16:32:06 C 02 23 35.74 +41 03 01.0 r D29
2011-11-19 16:55:06 C 02 23 33.84 +41 02 44.0 r D29
2011-11-19 17:18:07 C 02 23 32.02 +41 02 27.5 r D29
2011-11-27 07:50:36 C 02 11 37.39 +38 49 58.2 r 703
2011-11-27 07:58:49 C 02 11 36.96 +38 49 52.5 r 703
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)