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
2009-05-07 19:36:28 C 08 43 42.72 +05 11 40.6 w 160
2009-05-07 19:40:10 C 08 43 42.74 +05 11 38.9 w 160
2009-05-07 19:44:27 C 08 43 42.73 +05 11 36.7 w 160
2009-05-07 19:47:16 C 08 43 42.74 +05 11 35.4 w 160
2009-08-20 00:56:36 C 05 18 56.32 +27 42 20.6 19.0 o C20
2009-08-20 00:57:13 C 05 18 56.31 +27 42 21.3 19.5 o C20
2009-08-23 22:31:49 C 05 14 06.25 +29 52 12.4 18.4 o C20
2009-08-28 21:46:04 C 05 08 49.36 +32 24 23.0 19.2 o C20
2009-08-29 09:27:52 C 05 08 20.15 +32 38 43.5 19.0 c 704
2009-08-29 09:46:28 C 05 08 19.30 +32 39 06.6 18.5 c 704
2009-08-29 10:04:58 C 05 08 18.46 +32 39 30.9 18.4 c 704
2009-08-29 10:23:29 C 05 08 17.59 +32 39 53.1 18.0 c 704
2009-08-29 10:42:03 C 05 08 16.87 +32 40 15.5 18.4 c 704
2009-08-30 23:52:34 C 05 06 44.14 +33 24 38.7 18.4 o C20
2009-09-23 20:20:15 C 04 33 19.08 +42 49 27.3 18.9 o C20
2009-09-23 22:30:16 C 04 33 06.92 +42 51 13.3 18.2 o C20
2009-09-27 04:16:11 C 04 25 33.13 +43 48 36.8 w B19
2009-09-27 04:27:55 C 04 25 31.92 +43 48 45.1 w B19
2009-09-27 04:39:39 C 04 25 30.68 +43 48 53.9 w B19
2009-09-29 04:15:55 C 04 20 25.36 +44 20 42.9 w 160
2009-09-29 04:19:51 C 04 20 24.91 +44 20 45.6 w 160
2009-09-29 04:23:46 C 04 20 24.47 +44 20 47.9 w 160
2009-10-01 08:20:11 C 04 14 28.76 +44 52 26.7 17.8 c 704
2009-10-01 08:38:11 C 04 14 26.54 +44 52 37.6 17.7 c 704
2009-10-01 08:56:11 C 04 14 24.29 +44 52 48.7 18.1 c 704
2009-10-01 09:14:11 C 04 14 22.08 +44 53 00.1 18.4 c 704
2009-10-01 09:32:12 C 04 14 19.84 +44 53 10.8 19.1 c 704
2009-10-02 22:20:00 C 04 09 52.62 +45 13 10.7 w J28
2009-10-02 22:31:54 C 04 09 51.16 +45 13 17.3 w J28
2009-10-02 22:41:40 C 04 09 49.90 +45 13 22.6 w J28
2009-10-03 23:27:56 C 04 06 42.21 +45 25 55.1 w 160
2009-10-03 23:31:53 C 04 06 41.68 +45 25 57.1 w 160
2009-10-03 23:35:48 C 04 06 41.16 +45 25 59.2 w 160
2009-10-05 22:29:58 C 04 00 32.05 +45 47 09.3 17.5 o C20
2009-10-11 19:28:56 C 03 40 27.51 +46 28 38.8 18.8 r 084
2009-10-11 19:33:10 C 03 40 26.99 +46 28 40.7 18.0 r 084
2009-10-12 01:44:52 C 03 39 29.77 +46 29 49.0 17.7 o C20
2009-10-12 07:08:17 C 03 38 42.75 +46 30 42.2 17.7 c 704
2009-10-12 07:27:12 C 03 38 39.81 +46 30 44.4 18.6 c 704
2009-10-12 08:04:58 C 03 38 33.89 +46 30 51.4 18.7 c 704
2009-10-12 08:23:51 C 03 38 31.01 +46 30 54.3 18.6 c 704
2009-10-14 03:30:16 C 03 31 57.05 +46 35 22.5 w 160
2009-10-14 03:33:56 C 03 31 56.51 +46 35 22.4 w 160
2009-10-17 01:41:38 C 03 21 06.00 +46 35 08.2 18.9 o C20
2009-10-25 21:30:00 C 02 48 50.66 +45 38 17.0 w 160
2009-10-25 21:33:17 C 02 48 50.22 +45 38 15.5 w 160
2009-10-25 21:37:19 C 02 48 49.60 +45 38 14.0 w 160
2009-10-27 00:59:04 C 02 44 52.18 +45 25 13.7 16.9 o C20
2009-10-28 21:42:03 C 02 38 38.73 +45 01 42.5 17.6 o C20
2009-10-28 21:48:23 C 02 38 37.83 +45 01 39.0 17.6 o C20
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)