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
2011-03-04 07:49:39 C 10 46 56.20 +05 51 25.9 r 703
2011-03-04 08:03:35 C 10 46 54.69 +05 51 27.3 r 703
2011-03-06 03:46:32 C 10 42 10.58 +05 52 26.8 o 691
2011-03-06 04:16:58 C 10 42 07.14 +05 52 27.6 o 691
2011-03-06 04:42:27 C 10 42 04.24 +05 52 28.1 o 691
2011-03-08 23:21:47 C 10 34 30.30 +05 53 42.6 u 160
2011-03-10 22:48:52 C 10 28 56.25 +05 54 17.7 u 160
2011-03-10 22:51:23 C 10 28 55.95 +05 54 17.6 u 160
2011-03-10 22:54:07 C 10 28 55.62 +05 54 17.8 u 160
2011-03-11 06:05:21 C 10 28 04.47 +05 54 24.0 r 703
2011-03-11 06:15:14 C 10 28 03.28 +05 54 23.9 r 703
2011-03-11 06:25:09 C 10 28 02.06 +05 54 24.0 r 703
2011-03-11 06:35:08 C 10 28 00.84 +05 54 24.0 r 703
2011-03-11 06:57:29 C 10 27 58.06 +05 54 24.3 r 703
2011-03-11 07:08:43 C 10 27 56.70 +05 54 24.4 r 703
2011-03-11 07:20:03 C 10 27 55.29 +05 54 24.3 r 703
2011-03-11 07:31:20 C 10 27 53.92 +05 54 24.4 r 703
2011-03-21 21:03:50 C 09 56 51.45 +05 48 38.7 c A53
2011-03-21 21:14:51 C 09 56 50.03 +05 48 38.0 c A53
2011-03-21 21:20:28 C 09 56 49.34 +05 48 37.9 c A53
2011-03-21 21:26:04 C 09 56 48.64 +05 48 37.4 c A53
2011-03-21 21:31:40 C 09 56 47.95 +05 48 36.8 c A53
2011-03-21 21:37:17 C 09 56 47.26 +05 48 36.9 c A53
2011-03-22 19:29:15 C 09 54 07.80 +05 47 13.2 u A13
2011-03-22 20:01:33 C 09 54 03.78 +05 47 11.7 c A24
2011-03-22 20:02:35 C 09 54 03.67 +05 47 11.9 c A24
2011-03-22 20:07:22 C 09 54 03.05 +05 47 10.7 u A13
2011-03-22 20:26:21 C 09 54 00.69 +05 47 10.1 c A24
2011-03-22 20:45:17 C 09 53 58.31 +05 47 08.2 u A13
2011-03-22 20:50:48 C 09 53 57.62 +05 47 08.4 c A24
2011-03-22 21:14:55 C 09 53 54.61 +05 47 06.8 c A24
2011-03-22 21:15:57 C 09 53 54.52 +05 47 07.0 c A24
2011-03-22 22:26:35 C 09 53 45.60 +05 47 01.9 u 160
2011-03-22 22:28:56 C 09 53 45.32 +05 47 01.9 u 160
2011-03-22 22:31:15 C 09 53 45.04 +05 47 01.5 u 160
2011-03-23 19:52:54 C 09 51 10.60 +05 45 30.1 c A24
2011-03-23 19:53:56 C 09 51 10.47 +05 45 29.9 c A24
2011-03-23 19:56:57 C 09 51 10.08 +05 45 29.6 v 434
2011-03-23 19:59:59 C 09 51 09.69 +05 45 28.9 v 434
2011-03-23 20:03:51 C 09 51 09.20 +05 45 29.3 v 434
2011-03-23 20:05:53 C 09 51 08.92 +05 45 28.5 v 434
2011-03-23 20:18:11 C 09 51 07.47 +05 45 28.1 c A24
2011-03-23 20:43:08 C 09 51 04.38 +05 45 26.3 c A24
2011-03-23 21:07:44 C 09 51 01.34 +05 45 24.2 c A24
2011-03-23 21:08:47 C 09 51 01.20 +05 45 24.2 c A24
2011-03-23 22:26:23 C 09 50 51.51 +05 45 18.5 u 160
2011-03-23 22:28:42 C 09 50 51.22 +05 45 18.4 u 160
2011-03-23 22:30:59 C 09 50 50.92 +05 45 18.0 u 160
2011-03-24 22:08:22 C 09 48 01.18 +05 43 24.3 u 160
2011-03-24 22:10:40 C 09 48 00.89 +05 43 24.1 u 160
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)