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
1999-02-10 07:23:32 C 09 43 31.34 +21 14 36.9 19.0 a 704
1999-02-10 07:53:50 C 09 43 28.69 +21 14 43.9 19.1 a 704
1999-02-10 08:24:13 C 09 43 25.95 +21 14 49.4 19.3 a 704
1999-02-10 08:54:23 C 09 43 23.28 +21 14 56.1 19.7 a 704
1999-02-10 23:36:53 C 09 42 08.00 +21 17 52.9 557
1999-02-10 23:40:13 C 09 42 07.71 +21 17 53.6 557
1999-02-11 04:34:49 C 09 41 42.86 +21 18 54.2 18.8 a 704
1999-02-11 04:49:47 C 09 41 41.57 +21 18 59.0 19.1 a 704
1999-02-11 05:19:46 C 09 41 38.86 +21 19 04.0 18.7 a 704
1999-02-11 21:38:11 C 09 40 14.14 +21 22 13.7 557
1999-02-11 21:41:31 C 09 40 13.89 +21 22 14.3 557
1999-02-11 21:44:53 C 09 40 13.57 +21 22 15.2 557
1999-02-11 21:48:14 C 09 40 13.24 +21 22 15.8 557
1999-02-12 06:19:49 C 09 39 28.98 +21 23 57.5 c 699
1999-02-12 06:56:36 C 09 39 25.59 +21 24 04.3 c 699
1999-02-12 07:33:18 C 09 39 22.34 +21 24 11.5 c 699
1999-02-13 08:24:34 C 09 37 11.56 +21 28 52.4 18.7 a 704
1999-02-13 08:44:40 C 09 37 09.63 +21 28 56.2 19.0 a 704
1999-02-13 09:04:48 C 09 37 08.00 +21 28 57.4 19.0 a 704
1999-02-13 09:24:58 C 09 37 06.18 +21 29 02.3 18.8 a 704
1999-02-13 09:45:09 C 09 37 04.33 +21 29 07.1 18.5 a 704
1999-02-14 16:02:15 C 09 34 23.65 +21 34 30.1 360
1999-02-14 16:06:15 C 09 34 23.26 +21 34 31.1 360
1999-02-14 16:10:14 C 09 34 22.93 +21 34 31.8 360
1999-02-14 21:17:29 C 09 33 55.95 +21 35 21.4 z 587
1999-02-14 21:23:37 C 09 33 55.43 +21 35 24.1 z 587
1999-02-15 23:59:06 C 09 31 32.56 +21 39 48.5 118
1999-02-16 00:08:15 C 09 31 31.74 +21 39 50.3 118
1999-02-16 00:11:11 C 09 31 31.44 +21 39 50.8 118
1999-02-16 13:07:01 C 09 30 22.24 +21 41 55.4 z 402
1999-02-16 13:08:49 C 09 30 22.10 +21 41 56.6 z 402
1999-02-16 13:10:37 C 09 30 21.91 +21 41 56.3 z 402
1999-02-18 10:54:50 C 09 26 14.36 +21 48 41.4 c 566
1999-02-18 11:19:03 C 09 26 12.12 +21 48 44.6 c 566
1999-02-18 12:07:56 C 09 26 07.58 +21 48 51.3 c 566
1999-02-19 02:14:02 C 09 24 51.20 +21 50 40.8 z 104
1999-02-19 02:16:41 C 09 24 50.92 +21 50 40.5 z 104
1999-02-19 02:19:20 C 09 24 50.70 +21 50 40.7 z 104
1999-02-19 12:42:26 C 09 23 55.05 +21 52 03.0 z 402
1999-02-19 12:44:15 C 09 23 54.90 +21 52 03.1 z 402
1999-02-19 12:46:03 C 09 23 54.68 +21 52 03.3 z 402
1999-02-25 12:08:12 C 09 11 05.74 +22 05 17.6 z 402
1999-02-25 12:10:01 C 09 11 05.58 +22 05 17.4 z 402
1999-02-25 12:11:50 C 09 11 05.45 +22 05 17.8 z 402
1999-03-06 07:54:04 C 08 53 33.61 +22 06 16.8 658
1999-03-06 08:09:50 C 08 53 32.39 +22 06 15.8 658
1999-03-06 08:19:03 C 08 53 31.67 +22 06 15.7 658
1999-03-06 19:31:36 C 08 52 40.95 +22 05 42.5 d 046
1999-03-06 19:33:57 C 08 52 40.74 +22 05 42.9 d 046
1999-03-06 19:36:06 C 08 52 40.57 +22 05 42.1 d 046
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)