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
2016-12-24 11:37:39 C 11 56 34.80 +03 47 15.5 q G96
2016-12-24 11:43:53 C 11 56 35.12 +03 47 12.7 q G96
2016-12-24 11:50:09 C 11 56 35.44 +03 47 10.0 q G96
2017-01-23 09:01:42 C 12 28 11.08 -01 55 46.0 R G45
2017-01-23 09:08:34 C 12 28 11.31 -01 55 49.0 R G45
2017-01-23 09:15:37 C 12 28 11.58 -01 55 53.4 R G45
2017-01-23 09:22:37 C 12 28 11.79 -01 55 56.3 R G45
2017-01-26 09:01:17 C 12 30 34.93 -02 33 19.5 R G45
2017-01-26 09:08:15 C 12 30 35.14 -02 33 23.3 R G45
2017-01-26 09:13:38 C 12 30 35.29 -02 33 26.0 R G45
2017-01-26 09:20:41 C 12 30 35.52 -02 33 29.8 R G45
2017-01-26 09:34:46 C 12 30 35.95 -02 33 37.1 R G45
2017-01-26 10:11:53 C 12 30 36.94 -02 33 55.3 q H15
2017-01-26 10:25:44 C 12 30 37.45 -02 34 04.1 q H15
2017-01-26 10:39:41 C 12 30 37.87 -02 34 11.1 q H15
2017-01-26 14:09:29 C 12 30 44.535 -02 36 00.75 L F51
2017-01-26 14:27:41 C 12 30 45.066 -02 36 10.35 L F51
2017-01-26 14:45:48 C 12 30 45.597 -02 36 19.96 L F51
2017-01-26 15:03:55 C 12 30 46.128 -02 36 29.56 L F51
2017-01-31 09:49:58 C 12 34 08.94 -03 38 38.7 q 703
2017-01-31 09:57:29 C 12 34 09.12 -03 38 43.2 q 703
2017-01-31 10:04:54 C 12 34 09.31 -03 38 47.0 q 703
2017-01-31 10:12:19 C 12 34 09.48 -03 38 51.3 q 703
2017-02-08 08:50:15 C 12 38 25.68 -05 29 49.2 V G45
2017-02-08 09:53:38 C 12 38 26.64 -05 30 28.4 V G45
2017-02-08 10:45:35 C 12 38 27.39 -05 31 00.3 V G45
2017-02-08 11:14:42 C 12 38 27.82 -05 31 17.8 q 703
2017-02-08 11:24:12 C 12 38 28.00 -05 31 23.5 q 703
2017-02-08 11:31:25 C 12 38 28.05 -05 31 27.3 q 703
2017-02-08 11:38:33 C 12 38 28.17 -05 31 32.9 V G45
2017-02-08 11:38:42 C 12 38 28.19 -05 31 32.8 q 703
2017-02-08 12:33:05 C 12 38 28.99 -05 32 06.0 q G96
2017-02-08 12:39:13 C 12 38 29.07 -05 32 09.9 q G96
2017-02-08 12:45:21 C 12 38 29.18 -05 32 13.8 q G96
2017-02-08 12:51:29 C 12 38 29.27 -05 32 17.4 q G96
2017-02-11 08:32:45 C 12 39 31.66 -06 14 52.8 V G45
2017-02-11 09:27:28 C 12 39 32.22 -06 15 28.4 V G45
2017-02-11 10:33:39 C 12 39 32.92 -06 16 11.0 V G45
2017-02-11 12:47:34 C 12 39 34.32 -06 17 37.2 V G45
2017-02-16 14:26:49 C 12 40 38.39 -07 39 44.8 L T05
2017-02-16 14:47:27 C 12 40 38.46 -07 40 00.6 L T05
2017-02-16 15:13:24 C 12 40 38.50 -07 40 18.5 L T05
2017-02-16 15:39:14 C 12 40 38.48 -07 40 36.4 L T05
2017-02-16 15:54:37 C 12 40 38.52 -07 40 48.3 L T05
2017-02-21 05:46:54 C 12 40 37.93 -09 02 31.6 V G45
2017-02-21 05:47:12 C 12 40 37.95 -09 02 32.4 V G45
2017-02-21 06:44:57 C 12 40 37.51 -09 03 17.4 V G45
2017-02-21 06:46:00 C 12 40 37.52 -09 03 18.3 V G45
2017-02-21 07:54:02 C 12 40 36.94 -09 04 12.2 V G45
2017-02-21 07:55:43 C 12 40 36.96 -09 04 13.4 V G45
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)