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
2015-04-24 01:28:08 C 08 16 42.22 -17 24 16.9 u H21
2015-04-24 01:31:12 C 08 16 41.50 -17 24 18.4 u H21
2015-04-26 13:46:58 S 08 02 54.283 -17 49 03.32 L C51
2015-04-26 23:24:57 C 08 00 40.60 -17 52 47.9 r Y00
2015-04-26 23:41:52 C 08 00 36.61 -17 52 54.3 r Y00
2015-04-26 23:56:54 C 08 00 33.04 -17 52 59.3 r Y00
2015-04-27 01:38:49 C 08 00 10.38 -17 54 13.6 q H21
2015-04-27 01:41:12 C 08 00 09.83 -17 54 14.6 q H21
2015-04-27 01:43:27 C 08 00 09.29 -17 54 15.2 q H21
2015-04-27 01:45:44 C 08 00 08.70 -17 54 15.6 q H21
2015-04-27 01:48:00 C 08 00 08.25 -17 54 16.7 q H21
2015-04-27 01:50:17 C 08 00 07.67 -17 54 17.8 q H21
2015-04-27 01:52:49 C 08 00 07.07 -17 54 18.6 q H21
2015-04-28 01:31:14 C 07 54 40.62 -18 03 18.3 q H21
2015-04-28 01:33:30 C 07 54 40.06 -18 03 19.8 q H21
2015-04-28 01:35:59 C 07 54 39.49 -18 03 20.4 q H21
2015-04-28 01:38:27 C 07 54 38.87 -18 03 21.5 q H21
2015-04-28 01:40:54 C 07 54 38.31 -18 03 22.3 q H21
2015-04-28 01:43:21 C 07 54 37.70 -18 03 23.1 q H21
2015-04-28 01:46:01 C 07 54 37.08 -18 03 24.1 q H21
2015-10-20 00:32:17 C 04 46 44.40 +44 30 12.6 c A24
2015-10-20 00:33:19 C 04 46 44.32 +44 30 13.1 c A24
2015-10-20 00:34:21 C 04 46 44.23 +44 30 13.4 c A24
2015-10-23 17:40:53 C 04 38 44.04 +44 57 50.0 q D29
2015-10-23 17:47:49 C 04 38 43.32 +44 57 51.8 q D29
2015-10-23 18:06:18 C 04 38 41.43 +44 57 56.5 q D29
2015-10-23 18:11:41 C 04 38 40.95 +44 57 58.3 q D29
2015-10-23 18:30:10 C 04 38 39.09 +44 58 02.5 q D29
2015-10-23 18:37:05 C 04 38 38.43 +44 58 05.5 q D29
2015-10-27 10:05:19 C 04 29 49.82 +45 17 43.2 u 926
2015-10-27 10:32:45 C 04 29 46.76 +45 17 48.1 u 926
2015-10-27 10:59:18 C 04 29 43.78 +45 17 52.9 u 926
2015-11-06 04:01:45 C 04 02 59.89 +45 27 10.4 o 461
2015-11-06 04:13:23 C 04 02 58.51 +45 27 08.9 o 461
2015-11-22 08:04:51 C 03 18 26.06 +43 18 33.8 R G45
2015-11-22 08:13:12 C 03 18 25.18 +43 18 29.6 R G45
2015-11-22 08:21:21 C 03 18 24.33 +43 18 25.4 R G45
2015-11-22 08:29:21 C 03 18 23.51 +43 18 21.0 R G45
2015-11-22 08:31:06 C 03 18 23.33 +43 18 20.0 R G45
2015-12-01 06:50:32 C 02 59 37.68 +41 14 56.7 q 703
2015-12-01 07:07:59 C 02 59 36.26 +41 14 47.1 q 703
2015-12-01 07:16:43 C 02 59 35.68 +41 14 41.2 q 703
2015-12-09 03:20:06 C 02 47 57.79 +39 17 49.7 q G96
2015-12-09 03:28:53 C 02 47 57.33 +39 17 44.5 q G96
2015-12-09 03:37:41 C 02 47 56.87 +39 17 39.0 q G96
2015-12-09 03:46:29 C 02 47 56.41 +39 17 33.8 q G96
2016-01-14 04:41:25 C 02 42 22.28 +32 40 51.4 q G96
2016-01-14 04:52:23 C 02 42 22.53 +32 40 48.5 q G96
2016-01-14 05:09:35 C 02 42 22.98 +32 40 43.5 q G96
2016-01-14 05:20:33 C 02 42 23.22 +32 40 40.7 q G96
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)