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
2017-03-20 12:52:09 C 12 06 23.83 -22 01 35.0 L T08
2017-03-20 13:12:57 C 12 06 21.06 -22 02 12.2 L T08
2017-03-23 11:35:26 C 11 56 31.37 -24 17 16.8 L T05
2017-03-23 11:57:06 C 11 56 27.84 -24 18 00.2 L T05
2017-03-23 12:20:20 C 11 56 24.05 -24 18 46.6 L T05
2017-03-23 12:42:22 C 11 56 20.48 -24 19 30.6 L T05
2017-03-25 04:30:36 C 11 49 50.09 -25 42 01.4 r Y00
2017-03-25 04:32:30 C 11 49 49.62 -25 42 05.2 r Y00
2017-03-25 04:34:55 C 11 49 49.16 -25 42 11.6 r Y00
2017-03-25 11:16:20 C 11 48 39.48 -25 56 54.9 L T08
2017-03-25 11:38:04 C 11 48 35.43 -25 57 41.4 L T08
2017-03-25 11:58:20 C 11 48 31.71 -25 58 24.5 L T08
2017-03-25 12:19:22 C 11 48 27.81 -25 59 09.5 L T08
2017-03-30 23:31:53 C 11 20 27.53 -31 07 45.8 q Y00
2017-03-30 23:50:02 C 11 20 22.65 -31 08 32.7 q Y00
2017-03-31 00:03:06 C 11 20 19.09 -31 09 06.3 q Y00
2017-03-31 10:20:04 C 11 17 36.74 -31 35 43.3 L T05
2017-03-31 10:42:42 C 11 17 30.51 -31 36 40.7 L T05
2017-03-31 11:04:26 C 11 17 24.49 -31 37 35.5 L T05
2017-03-31 11:27:48 C 11 17 18.09 -31 38 34.3 L T05
2017-04-02 09:48:39 C 11 04 12.80 -33 39 47.1 L T08
2017-04-02 10:11:26 C 11 04 05.64 -33 40 46.8 L T08
2017-04-02 10:34:57 C 11 03 58.24 -33 41 48.5 L T08
2017-04-02 10:58:38 C 11 03 50.81 -33 42 50.5 L T08
2017-04-08 08:52:56 C 10 11 09.91 -40 05 23.7 L T05
2017-04-08 09:16:21 C 10 10 59.07 -40 06 23.9 L T05
2017-04-08 09:39:38 C 10 10 48.27 -40 07 23.4 L T05
2017-04-08 10:03:40 C 10 10 37.15 -40 08 24.8 L T05
2017-04-18 21:38:19 S 07 43 25.752 -47 04 06.96 L C51
2017-04-18 23:12:34 S 07 42 22.169 -47 04 20.32 L C51
2017-04-19 00:46:49 S 07 41 18.574 -47 04 31.62 L C51
2017-11-17 06:27:55 C 03 57 08.51 +44 40 55.2 U 703
2017-11-17 06:36:04 C 03 57 07.53 +44 40 53.0 U 703
2017-11-17 06:44:16 C 03 57 06.58 +44 40 50.5 U 703
2017-11-18 15:45:28 C 03 53 22.78 +44 30 47.5 q D29
2017-11-18 16:05:51 C 03 53 20.43 +44 30 40.8 q D29
2017-11-18 16:26:12 C 03 53 18.05 +44 30 34.6 q D29
2017-11-21 10:55:24 C 03 45 58.74 +44 07 00.6 U T08
2017-11-21 11:05:59 C 03 45 57.56 +44 06 56.7 U T08
2017-11-21 11:20:04 C 03 45 55.92 +44 06 49.9 U T08
2017-11-21 11:37:23 C 03 45 53.96 +44 06 44.6 U T08
2017-11-26 15:33:13 C 03 33 10.92 +43 12 26.9 q D29
2017-11-26 15:56:07 C 03 33 08.65 +43 12 15.6 q D29
2017-11-26 16:19:02 C 03 33 06.33 +43 12 04.6 q D29
2017-12-08 05:16:27 C 03 10 39.52 +40 40 48.2 U G96
2017-12-08 05:27:14 C 03 10 38.79 +40 40 41.9 U G96
2017-12-08 05:37:01 C 03 10 38.13 +40 40 36.2 U G96
2017-12-08 05:46:30 C 03 10 37.48 +40 40 30.0 U G96
2018-01-09 01:48:16 C 02 53 18.44 +34 19 37.1 U G96
2018-01-09 01:55:41 C 02 53 18.50 +34 19 34.2 U 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)