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
1999-10-21 01:33:09 C 20 50 34.72 +07 08 22.0 716
1999-10-21 03:01:35 C 20 50 59.79 +07 10 28.3 716
1999-10-22 01:24:15 C 20 57 20.62 +07 41 31.3 716
1999-10-23 10:41:00 C 21 06 19.42 +08 24 35.6 z 402
1999-10-23 10:42:49 C 21 06 19.90 +08 24 38.4 z 402
1999-10-23 10:44:38 C 21 06 20.39 +08 24 40.6 z 402
1999-10-25 11:54:33 C 21 18 43.73 +09 22 01.1 z 900
1999-10-25 12:05:17 C 21 18 46.34 +09 22 12.7 z 900
1999-10-26 17:34:41 C 21 25 45.41 +09 53 14.8 c 046
1999-10-26 17:36:36 C 21 25 45.79 +09 53 16.4 c 046
1999-10-26 17:39:10 C 21 25 46.40 +09 53 19.2 c 046
1999-10-26 17:40:20 C 21 25 46.67 +09 53 20.5 c 046
1999-10-29 09:59:44 C 21 39 53.97 +10 53 49.2 360
1999-10-29 10:07:30 C 21 39 55.55 +10 53 56.0 360
1999-10-29 10:10:30 C 21 39 56.17 +10 53 58.8 360
1999-10-30 16:59:24 C 21 46 14.01 +11 19 37.2 c 046
1999-10-30 17:01:24 C 21 46 14.40 +11 19 38.8 c 046
1999-10-30 17:02:57 C 21 46 14.69 +11 19 40.3 c 046
1999-10-30 17:04:05 C 21 46 14.92 +11 19 41.4 c 046
1999-10-30 17:06:04 C 21 46 15.31 +11 19 43.1 c 046
1999-10-30 17:07:10 C 21 46 15.52 +11 19 43.8 c 046
1999-10-31 00:10:34 C 21 47 39.37 +11 25 25.0 832
1999-10-31 01:00:07 C 21 47 48.89 +11 26 03.7 832
1999-10-31 17:49:18 C 21 51 06.16 +11 39 02.3 z 151
1999-10-31 17:54:43 C 21 51 07.13 +11 39 06.7 z 151
1999-10-31 17:59:32 C 21 51 07.99 +11 39 09.6 z 151
1999-10-31 18:57:17 C 21 51 18.85 +11 39 53.3 c 046
1999-10-31 18:59:24 C 21 51 19.22 +11 39 54.7 c 046
1999-10-31 19:00:35 C 21 51 19.44 +11 39 55.9 c 046
1999-10-31 19:01:42 C 21 51 19.66 +11 39 56.3 c 046
1999-11-03 00:43:48 C 22 01 17.45 +12 18 09.9 i 726
1999-11-03 00:48:48 C 22 01 18.51 +12 18 11.7 i 726
1999-11-03 00:53:47 C 22 01 19.37 +12 18 16.3 i 726
1999-11-03 00:58:47 C 22 01 20.25 +12 18 18.6 i 726
1999-11-03 01:03:48 C 22 01 20.98 +12 18 23.0 i 726
1999-11-03 01:08:48 C 22 01 21.99 +12 18 25.0 i 726
1999-11-04 03:42:03 C 22 06 01.52 +12 35 44.4 17.9 a 704
1999-11-04 04:05:18 C 22 06 05.43 +12 35 58.7 19.0 a 704
1999-11-04 04:30:48 C 22 06 09.77 +12 36 13.9 18.1 a 704
1999-11-04 04:55:19 C 22 06 13.84 +12 36 29.6 18.4 a 704
1999-11-08 18:10:22 C 22 23 54.12 +13 37 53.5 17.7 z 143
1999-11-08 18:13:57 C 22 23 54.65 +13 37 55.1 17.8 z 143
1999-11-08 18:17:30 C 22 23 55.22 +13 37 57.2 17.6 z 143
1999-11-08 18:24:38 C 22 23 56.23 +13 38 01.0 17.4 z 143
1999-11-08 18:31:45 C 22 23 57.27 +13 38 04.6 17.6 z 143
1999-11-09 00:11:59 C 22 24 48.85 +13 40 56.9 832
1999-11-09 00:57:53 C 22 24 55.60 +13 41 19.9 832
1999-11-11 02:30:10 c 22 32 12.06 +14 04 56.3 d 703
1999-11-11 02:48:02 c 22 32 14.61 +14 05 04.1 d 703
1999-11-11 03:05:55 c 22 32 17.04 +14 05 13.1 d 703
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)