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
2007-11-18 04:55:23 C 01 15 18.70 +35 54 55.2 w 699
2009-01-25 09:08:04 C 11 20 36.52 +09 08 09.7 r 703
2009-01-25 09:19:27 C 11 20 36.31 +09 08 08.5 r 703
2009-01-25 09:30:49 C 11 20 36.02 +09 08 08.9 r 703
2009-01-25 09:42:09 C 11 20 35.73 +09 08 08.1 r 703
2009-01-28 08:05:22 C 11 18 53.42 +09 06 53.2 18.9 c 704
2009-01-28 08:38:53 C 11 18 52.53 +09 06 54.2 18.9 c 704
2009-01-28 08:55:39 C 11 18 52.07 +09 06 52.9 18.8 c 704
2009-01-31 09:17:14 C 11 16 36.98 +09 07 05.6 r G96
2009-01-31 09:25:17 C 11 16 36.62 +09 07 05.8 r G96
2009-01-31 09:33:26 C 11 16 36.37 +09 07 05.9 r G96
2009-01-31 09:41:24 C 11 16 36.08 +09 07 06.0 r G96
2009-02-01 10:30:17 C 11 15 42.55 +09 07 30.6 o 691
2009-02-01 10:56:17 C 11 15 41.52 +09 07 31.0 o 691
2009-02-01 11:22:40 C 11 15 40.48 +09 07 31.4 o 691
2009-02-03 21:38:13 C 11 13 20.69 +09 09 06.6 r B67
2009-02-03 21:46:50 C 11 13 20.31 +09 09 07.4 r B67
2009-02-03 21:55:58 C 11 13 19.99 +09 09 07.0 r B67
2009-02-05 11:03:33 C 11 11 38.82 +09 10 40.0 o 691
2009-02-05 11:29:59 C 11 11 37.52 +09 10 41.2 o 691
2009-02-05 11:56:02 C 11 11 36.23 +09 10 42.3 o 691
2009-02-16 08:57:29 C 10 55 36.73 +09 30 21.6 r 703
2009-02-16 09:06:02 C 10 55 36.12 +09 30 22.7 r 703
2009-02-16 09:14:29 C 10 55 35.36 +09 30 24.1 r 703
2009-02-17 00:33:33 C 10 54 25.36 +09 31 56.9 r J75
2009-02-17 00:52:49 C 10 54 23.82 +09 31 58.8 r J75
2009-02-17 01:12:12 C 10 54 22.27 +09 32 00.7 r J75
2009-02-18 01:21:38 C 10 52 28.30 +09 34 32.3 r J75
2009-02-18 01:40:54 C 10 52 26.68 +09 34 34.1 r J75
2009-02-18 02:00:02 C 10 52 25.11 +09 34 36.1 r J75
2009-02-22 06:38:28 C 10 43 51.25 +09 45 46.3 18.0 c 704
2009-02-22 06:55:21 C 10 43 49.69 +09 45 48.4 18.1 c 704
2009-02-22 07:12:23 C 10 43 48.07 +09 45 50.4 18.0 c 704
2009-02-22 07:29:36 C 10 43 46.47 +09 45 52.4 18.2 c 704
2009-02-22 07:46:47 C 10 43 44.87 +09 45 54.3 18.2 c 704
2009-02-24 00:01:17 C 10 40 02.40 +09 50 28.8 r J75
2009-02-24 00:19:45 C 10 40 00.60 +09 50 31.2 r J75
2009-02-24 00:37:55 C 10 39 58.84 +09 50 33.3 r J75
2009-02-24 21:20:54 C 10 38 01.14 +09 52 54.1 o B88
2009-02-24 21:47:32 C 10 37 58.52 +09 52 56.8 o B88
2009-02-25 20:41:08 C 10 35 45.52 +09 55 32.9 o B88
2009-02-25 21:22:55 C 10 35 41.38 +09 55 37.6 o B88
2009-02-26 06:50:45 C 10 34 45.40 +09 56 44.1 r 703
2009-02-26 07:05:51 C 10 34 43.86 +09 56 45.9 r 703
2009-02-26 07:20:47 C 10 34 42.34 +09 56 47.6 r 703
2009-02-26 07:35:53 C 10 34 40.80 +09 56 49.3 r 703
2009-02-27 03:44:26 C 10 32 41.25 +09 59 03.0 o 691
2009-02-27 04:14:50 C 10 32 38.13 +09 59 06.2 o 691
2009-02-27 04:45:11 C 10 32 34.99 +09 59 10.4 o 691
2009-02-28 00:23:33 C 10 30 35.25 +10 01 18.1 c A24
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)