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
2011-11-27 08:07:14 C 02 11 36.49 +38 49 45.3 r 703
2011-11-27 08:15:25 C 02 11 36.06 +38 49 40.2 r 703
2011-12-01 07:09:31 C 02 07 18.711 +37 42 54.74 L F51
2011-12-01 07:25:39 C 02 07 18.025 +37 42 43.75 L F51
2013-01-12 08:27:51 C 11 49 49.58 +05 01 57.5 u 807
2013-01-12 08:33:38 C 11 49 49.70 +05 01 56.0 u 807
2013-01-12 08:39:24 C 11 49 49.81 +05 01 54.4 u 807
2013-01-12 08:45:10 C 11 49 49.93 +05 01 52.7 u 807
2013-01-12 08:50:55 C 11 49 50.04 +05 01 51.2 u 807
2013-02-03 13:52:11 C 11 52 43.867 +02 45 31.25 L F51
2013-02-03 14:10:05 C 11 52 43.560 +02 45 27.23 L F51
2013-02-05 13:37:14 C 11 51 56.404 +02 34 59.42 L F51
2013-02-05 13:53:17 C 11 51 56.056 +02 34 55.97 L F51
2013-02-14 09:44:23 C 11 45 36.36 +01 51 38.7 r 703
2013-02-14 09:59:00 C 11 45 35.67 +01 51 36.0 r 703
2013-02-14 10:13:41 C 11 45 35.02 +01 51 33.0 r 703
2013-02-14 10:28:28 C 11 45 34.38 +01 51 30.2 r 703
2013-02-18 04:46:31 C 11 41 18.12 +01 34 35.5 o C60
2013-02-18 04:47:41 C 11 41 18.06 +01 34 36.5 o C60
2013-02-18 04:48:51 C 11 41 18.03 +01 34 35.7 o C60
2013-02-18 04:50:02 C 11 41 17.90 +01 34 35.0 o C60
2013-02-18 04:53:35 C 11 41 17.72 +01 34 34.5 o C60
2013-02-18 04:54:45 C 11 41 17.70 +01 34 34.5 o C60
2013-02-18 04:56:05 C 11 41 17.57 +01 34 34.7 o C60
2013-02-18 04:57:31 C 11 41 17.54 +01 34 34.1 o C60
2013-02-18 05:00:21 C 11 41 17.39 +01 34 33.2 o C60
2013-02-18 05:01:45 C 11 41 17.29 +01 34 33.0 o C60
2013-02-18 05:03:09 C 11 41 17.22 +01 34 32.6 o C60
2013-02-18 05:04:35 C 11 41 17.12 +01 34 32.1 o C60
2013-02-18 05:05:59 C 11 41 17.06 +01 34 31.9 o C60
2013-02-18 05:08:50 C 11 41 16.93 +01 34 32.1 o C60
2013-02-18 05:15:53 C 11 41 16.53 +01 34 30.3 o C60
2013-02-18 05:18:43 C 11 41 16.38 +01 34 30.0 o C60
2013-02-18 05:22:58 C 11 41 16.20 +01 34 29.5 o C60
2013-02-18 05:24:24 C 11 41 16.08 +01 34 28.3 o C60
2013-02-18 09:21:44 C 11 41 03.86 +01 33 48.5 o 691
2013-02-18 09:47:11 C 11 41 02.44 +01 33 44.6 o 691
2013-02-18 10:12:36 C 11 41 01.00 +01 33 39.9 o 691
2013-02-24 08:44:15 C 11 32 02.38 +01 08 43.2 u H21
2013-02-24 08:51:22 C 11 32 01.84 +01 08 42.0 u H21
2013-02-24 08:58:28 C 11 32 01.31 +01 08 40.7 u H21
2013-02-25 07:37:45 C 11 30 20.55 +01 04 52.7 u H21
2013-02-25 07:42:51 C 11 30 20.15 +01 04 51.8 u H21
2013-02-25 07:47:56 C 11 30 19.75 +01 04 50.9 u H21
2013-02-25 07:58:04 C 11 30 18.94 +01 04 49.4 u H21
2013-02-25 08:02:08 C 11 30 18.63 +01 04 48.7 u H21
2013-02-28 23:07:07 C 11 23 09.75 +00 50 29.8 q C73
2013-02-28 23:08:17 C 11 23 09.67 +00 50 29.5 q C73
2013-02-28 23:09:25 C 11 23 09.56 +00 50 29.3 q C73
2013-02-28 23:10:34 C 11 23 09.44 +00 50 29.0 q C73
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)