21374 (1997 WS22)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.1207067223 ± 5.62e-09
Semi-major axis (a)1.2694768683 AU ± 2.72e-10
Inclination (i)23.97969173° ± 1.57e-06
Long. of Asc. Node (Ω)59.19048102° ± 1.05e-06
Arg. of Perihelion (ω)197.34514071° ± 3.61e-06
Mean Anomaly (M)4.82548646° ± 2.86e-06
Mean Motion (n)0.6890886369°/day ± 2.21e-10
Perihelion dist (q)1.11624248 AU ± 7.13e-09
Aphelion dist (Q)1.42271126 AU ± 7.14e-09
Orbital Period1.43033310 yr ± 4.59e-10
Physical Parameters
H (abs. magnitude)17.45
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.252″
Uncertainty0
Orbit TypeAmor
MOID0.108428 AU
Observations Used2054
Radar Obs Used1
Gaia Obs Used44
Oppositions13
Arc Total1974-2025
First Observation Used1974-09-22
Last Observation Used2025-02-22
Observations (2303)
Date Type RA Dec Mag Band Observatory
2011-04-01 21:02:19 C 07 42 46.69 +64 59 16.4 c A24
2011-04-01 21:07:20 C 07 42 47.37 +64 59 10.8 c A24
2011-04-01 21:26:24 C 07 42 49.94 +64 58 50.9 c A24
2011-04-01 21:31:26 C 07 42 50.63 +64 58 45.6 c A24
2011-04-01 21:45:27 C 07 42 52.58 +64 58 31.1 c A24
2011-04-02 03:57:28 C 07 43 44.72 +64 52 14.5 r 703
2011-04-02 04:06:48 C 07 43 46.02 +64 52 04.9 r 703
2011-04-02 04:16:13 C 07 43 47.13 +64 51 55.2 r 703
2011-04-02 20:11:52 C 07 46 00.34 +64 35 26.9 c A24
2011-04-02 20:26:17 C 07 46 02.30 +64 35 11.3 c A24
2011-04-02 20:31:25 C 07 46 03.02 +64 35 05.4 c A24
2011-04-02 20:50:59 C 07 46 05.77 +64 34 44.7 c A24
2011-04-02 20:56:07 C 07 46 06.45 +64 34 39.0 c A24
2011-04-02 21:10:31 C 07 46 08.42 +64 34 23.5 c A24
2011-04-05 20:13:35 C 07 55 59.59 +63 18 51.2 c A24
2011-04-05 20:29:30 C 07 56 01.73 +63 18 33.4 c A24
2011-04-05 20:35:10 C 07 56 02.47 +63 18 27.1 c A24
2011-04-05 20:56:45 C 07 56 05.41 +63 18 03.5 c A24
2011-04-05 21:02:25 C 07 56 06.16 +63 17 57.3 c A24
2011-04-05 21:18:21 C 07 56 08.31 +63 17 39.5 c A24
2011-04-06 20:06:43 C 07 59 17.01 +62 52 39.2 c A24
2011-04-06 20:27:46 C 07 59 19.81 +62 52 15.7 c A24
2011-04-06 20:35:08 C 07 59 20.80 +62 52 07.4 c A24
2011-04-06 21:03:33 C 07 59 24.62 +62 51 35.4 c A24
2011-04-06 21:10:54 C 07 59 25.63 +62 51 27.1 c A24
2011-04-06 21:31:58 C 07 59 28.42 +62 51 03.4 c A24
2011-04-07 20:07:07 C 08 02 34.67 +62 25 57.2 c A24
2011-04-07 20:24:12 C 08 02 36.90 +62 25 37.4 c A24
2011-04-07 20:30:14 C 08 02 37.64 +62 25 30.5 c A24
2011-04-07 20:53:22 C 08 02 40.76 +62 25 04.0 c A24
2011-04-07 21:16:30 C 08 02 43.96 +62 24 37.3 c A24
2011-04-08 21:04:32 C 08 05 59.11 +61 57 42.6 c A24
2011-04-08 21:14:02 C 08 06 00.35 +61 57 31.6 c A24
2011-04-08 21:17:32 C 08 06 00.82 +61 57 27.4 c A24
2011-04-08 21:30:33 C 08 06 02.50 +61 57 12.4 c A24
2011-04-08 21:34:04 C 08 06 02.98 +61 57 08.2 c A24
2011-04-08 21:43:34 C 08 06 04.25 +61 56 56.9 c A24
2011-04-09 20:06:41 C 08 09 07.46 +61 31 17.1 c A24
2011-04-09 20:07:44 C 08 09 07.61 +61 31 15.2 c A24
2011-04-09 20:08:46 C 08 09 07.72 +61 31 14.2 c A24
2011-05-22 03:42:14 C 10 09 41.97 +36 04 43.4 19.2 c 704
2011-05-22 03:59:00 C 10 09 43.61 +36 04 13.1 19.6 c 704
2011-05-22 04:26:10 C 10 09 46.36 +36 03 23.4 19.4 c 704
2011-05-22 04:42:26 C 10 09 48.06 +36 02 53.5 19.2 c 704
2011-05-22 04:58:41 C 10 09 49.55 +36 02 23.5 19.1 c 704
2011-05-27 04:54:37 C 10 22 00.12 +32 22 22.4 r 703
2011-05-27 05:07:48 C 10 22 01.38 +32 21 58.6 r 703
2011-05-27 05:21:03 C 10 22 02.64 +32 21 31.4 r 703
2011-05-27 05:34:28 C 10 22 03.97 +32 21 08.0 r 703
2011-06-05 04:07:11 C 10 43 08.81 +25 34 07.2 19.7 c 704
Radar Observations (1)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2014-05-07 07:45:00 163222542.36 4 us 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)