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
2015-04-04 02:01:40 C 10 03 57.41 -12 59 04.4 u H21
2015-04-04 02:09:02 C 10 03 55.79 -12 59 09.0 u H21
2015-04-04 02:14:11 C 10 03 54.70 -12 59 12.0 u H21
2015-04-04 02:16:06 C 10 03 54.24 -12 59 12.9 u H21
2015-04-04 03:39:35 C 10 03 36.08 -13 00 06.6 u H21
2015-04-04 03:45:39 C 10 03 34.77 -13 00 10.6 u H21
2015-04-04 03:48:44 C 10 03 34.10 -13 00 12.6 u H21
2015-04-04 03:51:34 C 10 03 33.46 -13 00 14.5 u H21
2015-04-04 03:54:16 C 10 03 32.89 -13 00 16.3 u H21
2015-04-04 03:57:00 C 10 03 32.29 -13 00 18.0 u H21
2015-04-04 03:59:26 C 10 03 31.75 -13 00 19.5 u H21
2015-04-04 04:03:04 C 10 03 30.95 -13 00 21.4 u H21
2015-04-05 03:03:37 C 09 58 38.67 -13 14 59.3 q H21
2015-04-05 03:07:43 C 09 58 37.78 -13 15 02.0 q H21
2015-04-05 03:11:46 C 09 58 36.89 -13 15 04.5 q H21
2015-04-05 03:15:51 C 09 58 35.99 -13 15 07.2 q H21
2015-04-05 03:19:55 C 09 58 35.10 -13 15 09.8 q H21
2015-04-05 03:23:59 C 09 58 34.19 -13 15 12.3 q H21
2015-04-05 03:28:19 C 09 58 33.24 -13 15 15.0 q H21
2015-04-11 22:12:06 C 09 22 48.53 -14 54 26.8 w Z27
2015-04-11 22:13:16 C 09 22 48.27 -14 54 27.5 w Z27
2015-04-11 22:14:25 C 09 22 48.00 -14 54 28.1 w Z27
2015-04-11 22:17:10 C 09 22 47.36 -14 54 29.6 w Z27
2015-04-11 22:18:20 C 09 22 47.04 -14 54 30.5 w Z27
2015-04-12 21:01:11 C 09 17 40.12 -15 07 03.1 o K95
2015-04-12 21:23:24 C 09 17 35.01 -15 07 15.4 o K95
2015-04-17 01:28:36 C 08 54 56.83 -16 02 56.2 u H21
2015-04-17 01:31:42 C 08 54 56.10 -16 02 57.8 u H21
2015-04-17 01:34:57 C 08 54 55.34 -16 02 59.3 u H21
2015-04-17 01:37:54 C 08 54 54.64 -16 03 00.9 u H21
2015-04-17 01:40:50 C 08 54 53.95 -16 03 02.6 u H21
2015-04-17 01:43:30 C 08 54 53.33 -16 03 04.0 u H21
2015-04-17 01:46:25 C 08 54 52.64 -16 03 05.4 u H21
2015-04-17 01:49:53 C 08 54 51.83 -16 03 07.3 u H21
2015-04-18 20:02:48 C 08 45 15.77 -16 24 58.2 q G34
2015-04-18 20:09:33 C 08 45 14.07 -16 24 59.7 q G34
2015-04-21 19:45:18 C 08 28 56.88 -16 59 54.5 r 006
2015-04-21 19:49:31 C 08 28 55.89 -16 59 56.7 r 006
2015-04-21 19:55:08 C 08 28 54.61 -16 59 59.0 r 006
2015-04-21 19:59:51 C 08 28 53.49 -17 00 00.5 r 006
2015-04-23 10:10:39 S 08 20 12.002 -17 17 03.26 L C51
2015-04-23 11:45:05 S 08 19 50.458 -17 17 45.10 L C51
2015-04-23 14:53:57 S 08 19 07.354 -17 19 08.87 L C51
2015-04-23 18:03:00 S 08 18 24.192 -17 20 32.89 L C51
2015-04-24 01:15:00 C 08 16 45.33 -17 24 11.8 u H21
2015-04-24 01:17:23 C 08 16 44.75 -17 24 12.8 u H21
2015-04-24 01:19:34 C 08 16 44.24 -17 24 13.5 u H21
2015-04-24 01:21:44 C 08 16 43.72 -17 24 14.3 u H21
2015-04-24 01:23:48 C 08 16 43.24 -17 24 15.2 u H21
2015-04-24 01:25:52 C 08 16 42.76 -17 24 16.0 u H21
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)