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
1999-03-06 19:38:09 C 08 52 40.43 +22 05 42.5 d 046
1999-03-06 19:40:20 C 08 52 40.25 +22 05 42.1 d 046
1999-03-12 05:36:42 C 08 43 29.83 +21 55 03.5 z 711
1999-03-12 05:50:43 C 08 43 28.88 +21 55 01.9 z 711
1999-03-12 23:34:37 C 08 42 20.31 +21 52 57.0 118
1999-03-12 23:37:38 C 08 42 20.09 +21 52 56.5 118
1999-03-12 23:42:39 C 08 42 19.81 +21 52 55.9 118
1999-04-05 12:27:14 C 08 21 48.44 +19 54 44.5 360
1999-04-05 12:35:29 C 08 21 48.36 +19 54 42.2 360
1999-04-05 12:42:45 C 08 21 48.25 +19 54 39.9 360
1999-04-09 03:25:04 C 08 21 18.89 +19 29 47.8 i 691
1999-04-09 03:58:23 C 08 21 18.74 +19 29 37.8 i 691
1999-04-09 04:34:39 C 08 21 18.60 +19 29 27.1 i 691
1999-05-11 11:14:00 C 08 41 19.62 +14 49 01.9 360
1999-05-11 11:19:45 C 08 41 19.87 +14 48 59.3 360
1999-05-11 11:26:00 C 08 41 20.22 +14 48 55.9 360
1999-07-12 09:20:04 C 10 36 53.42 -01 03 51.0 426
1999-07-12 09:25:12 C 10 36 53.96 -01 03 55.4 426
1999-07-12 09:30:17 C 10 36 54.48 -01 04 00.1 426
1999-08-03 08:37:11 C 11 37 04.18 -09 11 43.9 413
1999-08-03 08:46:50 C 11 37 05.38 -09 11 52.8 413
1999-09-01 09:03:26 C 13 23 23.77 -18 08 39.9 413
1999-09-01 09:06:10 C 13 23 24.32 -18 08 41.1 413
1999-10-03 10:45:45 C 17 58 56.08 -08 14 59.4 360
1999-10-03 10:48:00 C 17 58 57.23 -08 14 53.8 360
1999-10-03 10:53:30 C 17 58 59.91 -08 14 40.0 360
1999-10-03 18:09:50 C 18 02 38.89 -07 56 14.2 c 118
1999-10-03 18:12:48 C 18 02 40.36 -07 56 05.6 c 118
1999-10-03 18:15:21 C 18 02 41.64 -07 55 59.7 c 118
1999-10-09 10:30:36 C 19 07 56.38 -02 04 19.3 z 900
1999-10-09 10:36:23 C 19 07 58.94 -02 04 04.7 z 900
1999-10-12 17:42:50 C 19 41 45.02 +01 03 31.5 z 151
1999-10-12 17:48:54 C 19 41 47.58 +01 03 45.5 z 151
1999-10-12 17:54:43 C 19 41 49.51 +01 03 57.1 z 151
1999-10-12 17:57:44 C 19 41 50.98 +01 04 03.5 z 151
1999-10-12 18:01:12 C 19 41 52.32 +01 04 12.4 z 151
1999-10-12 18:04:28 C 19 41 53.58 +01 04 19.3 z 151
1999-10-14 03:11:01 C 19 54 54.31 +02 16 05.6 i 670
1999-10-14 03:30:56 C 19 55 01.74 +02 16 48.3 i 670
1999-10-15 17:14:27 C 20 09 03.14 +03 32 51.1 c 118
1999-10-15 17:18:23 C 20 09 04.54 +03 32 58.6 c 118
1999-10-15 19:00:44 C 20 09 40.95 +03 36 16.0 611
1999-10-15 19:15:54 C 20 09 46.28 +03 36 45.6 611
1999-10-18 02:41:40 C 20 28 46.46 +05 17 31.8 i 670
1999-10-18 03:00:12 C 20 28 52.34 +05 18 03.4 i 670
1999-10-18 03:15:08 C 20 28 57.13 +05 18 28.9 i 670
1999-10-19 04:15:54 C 20 36 56.27 +05 59 44.7 i 670
1999-10-19 04:28:58 C 20 37 00.36 +06 00 06.6 i 670
1999-10-19 20:15:13 C 20 41 52.22 +06 24 46.3 c 118
1999-10-19 20:25:48 C 20 41 55.33 +06 25 02.2 c 118
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)