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
2011-01-30 11:32:29 C 11 35 35.77 +06 12 01.5 19.1 c 704
2011-02-05 08:53:01 C 11 31 58.86 +05 59 12.6 18.6 c 704
2011-02-05 09:16:41 C 11 31 58.05 +05 59 11.3 19.1 c 704
2011-02-05 09:41:50 C 11 31 57.15 +05 59 10.1 18.9 c 704
2011-02-09 08:37:07 C 11 28 22.54 +05 53 09.9 r 703
2011-02-09 08:46:14 C 11 28 22.04 +05 53 10.6 r 703
2011-02-09 08:55:14 C 11 28 21.61 +05 53 10.4 r 703
2011-02-09 09:04:24 C 11 28 21.18 +05 53 10.1 r 703
2011-02-11 08:59:51 C 11 26 10.12 +05 50 56.6 18.0 c 704
2011-02-11 09:20:54 C 11 26 09.06 +05 50 55.9 18.3 c 704
2011-02-11 09:43:04 C 11 26 07.91 +05 50 54.4 18.3 c 704
2011-02-11 10:04:12 C 11 26 06.85 +05 50 53.8 18.4 c 704
2011-02-11 10:24:48 C 11 26 05.78 +05 50 52.9 18.5 c 704
2011-02-14 22:06:41 C 11 21 38.84 +05 48 08.3 u B67
2011-02-14 22:23:45 C 11 21 37.81 +05 48 07.6 u B67
2011-02-14 22:40:42 C 11 21 36.80 +05 48 07.6 u B67
2011-02-23 05:22:52 C 11 07 40.45 +05 47 04.2 o 691
2011-02-23 05:48:25 C 11 07 38.27 +05 47 04.6 o 691
2011-02-23 06:13:58 C 11 07 36.11 +05 47 05.0 o 691
2011-02-23 09:33:47 C 11 07 18.98 +05 47 06.9 r 703
2011-02-23 09:44:29 C 11 07 18.04 +05 47 06.8 r 703
2011-02-23 09:55:21 C 11 07 17.14 +05 47 06.9 r 703
2011-02-23 10:06:10 C 11 07 16.21 +05 47 07.2 r 703
2011-02-25 01:24:38 C 11 03 55.56 +05 47 38.0 r J75
2011-02-25 01:41:55 C 11 03 54.00 +05 47 38.2 r J75
2011-02-25 01:59:09 C 11 03 52.44 +05 47 38.5 r J75
2011-02-25 08:49:45 C 11 03 16.34 +05 47 46.4 r G96
2011-02-25 08:59:06 C 11 03 15.48 +05 47 46.5 r G96
2011-02-25 09:08:33 C 11 03 14.61 +05 47 46.6 r G96
2011-02-25 09:18:00 C 11 03 13.75 +05 47 46.8 r G96
2011-02-26 06:19:54 C 11 01 21.10 +05 48 08.9 r G96
2011-02-26 06:21:24 C 11 01 20.96 +05 48 08.9 r G96
2011-02-26 06:22:58 C 11 01 20.82 +05 48 09.0 r G96
2011-02-26 06:24:30 C 11 01 20.67 +05 48 09.0 r G96
2011-02-27 21:36:39 C 10 57 41.66 +05 48 55.2 r J75
2011-02-27 21:52:52 C 10 57 40.04 +05 48 55.4 r J75
2011-02-27 22:09:04 C 10 57 38.46 +05 48 55.8 r J75
2011-03-01 06:57:55 C 10 54 26.52 +05 49 41.9 17.5 c 704
2011-03-01 07:17:36 C 10 54 24.56 +05 49 42.4 17.6 c 704
2011-03-01 07:36:47 C 10 54 22.60 +05 49 42.8 17.5 c 704
2011-03-01 07:55:50 C 10 54 20.64 +05 49 43.5 17.7 c 704
2011-03-01 08:11:03 C 10 54 18.93 +05 49 43.0 r G96
2011-03-01 08:15:00 C 10 54 18.67 +05 49 44.3 18.2 c 704
2011-03-01 08:16:02 C 10 54 18.50 +05 49 43.2 r G96
2011-03-01 08:21:02 C 10 54 17.92 +05 49 44.1 r G96
2011-03-03 23:07:03 C 10 47 51.66 +05 51 10.3 o A50
2011-03-03 23:33:08 C 10 47 48.84 +05 51 10.9 o A50
2011-03-03 23:59:13 C 10 47 46.01 +05 51 11.5 o A50
2011-03-04 07:21:50 C 10 46 59.30 +05 51 25.5 r 703
2011-03-04 07:35:43 C 10 46 57.75 +05 51 25.6 r 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)