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
2007-11-28 06:43:12 C 02 57 39.44 +17 44 50.5 r H45
2007-12-03 20:40:28 C 02 41 44.24 +20 30 26.9 c A24
2007-12-03 20:41:54 C 02 41 44.09 +20 30 28.5 c A24
2007-12-03 21:03:42 C 02 41 41.59 +20 30 54.0 c A24
2007-12-03 21:26:55 C 02 41 38.95 +20 31 21.0 c A24
2007-12-03 21:48:42 C 02 41 36.46 +20 31 46.4 c A24
2007-12-03 21:50:11 C 02 41 36.29 +20 31 47.9 c A24
2007-12-04 00:23:58 C 02 41 20.56 +20 34 47.7 r H45
2007-12-04 00:25:09 C 02 41 20.41 +20 34 49.1 r H45
2007-12-04 00:26:13 C 02 41 20.30 +20 34 50.3 r H45
2007-12-04 00:28:22 C 02 41 20.05 +20 34 52.9 r H45
2007-12-04 00:30:33 C 02 41 19.81 +20 34 55.5 r H45
2007-12-04 22:09:46 C 02 38 58.90 +20 59 47.9 c A24
2007-12-04 22:11:11 C 02 38 58.74 +20 59 49.6 c A24
2007-12-05 02:40:20 C 02 38 31.30 +21 04 57.1 w 699
2007-12-05 03:17:12 C 02 38 27.27 +21 05 39.2 w 699
2007-12-05 03:54:03 C 02 38 23.25 +21 06 21.3 w 699
2007-12-05 04:30:55 C 02 38 19.21 +21 07 03.2 w 699
2007-12-05 20:35:02 C 02 36 39.18 +21 25 02.6 c A24
2007-12-05 20:36:30 C 02 36 39.04 +21 25 04.0 c A24
2007-12-06 01:52:18 C 02 36 07.25 +21 30 57.2 r H45
2007-12-06 01:53:48 C 02 36 07.09 +21 30 58.9 r H45
2007-12-06 01:56:03 C 02 36 06.85 +21 31 01.3 r H45
2007-12-06 01:57:51 C 02 36 06.65 +21 31 03.2 r H45
2007-12-06 01:59:23 C 02 36 06.47 +21 31 05.0 r H45
2007-12-13 23:38:34 C 02 19 47.86 +24 42 45.8 r B09
2007-12-13 23:43:36 C 02 19 47.52 +24 42 49.4 r B09
2007-12-16 04:41:18 C 02 16 20.20 +25 30 26.3 r 703
2007-12-16 04:48:49 C 02 16 19.69 +25 30 32.4 w 699
2007-12-16 04:50:44 C 02 16 19.56 +25 30 34.6 r 703
2007-12-16 05:00:11 C 02 16 18.94 +25 30 43.2 r 703
2007-12-16 05:09:43 C 02 16 18.26 +25 30 50.9 r 703
2007-12-16 05:12:30 C 02 16 18.19 +25 30 53.1 w 699
2007-12-16 05:36:10 C 02 16 16.62 +25 31 13.8 w 699
2007-12-16 05:59:52 C 02 16 15.13 +25 31 33.8 w 699
2007-12-16 18:22:01 C 02 15 31.58 +25 42 17.1 c A24
2007-12-16 18:23:10 C 02 15 31.51 +25 42 18.9 c A24
2007-12-16 18:39:56 C 02 15 30.45 +25 42 32.6 c A24
2007-12-16 18:57:51 C 02 15 29.37 +25 42 48.7 c A24
2007-12-16 19:14:38 C 02 15 28.32 +25 43 02.7 c A24
2007-12-16 19:15:45 C 02 15 28.31 +25 43 04.6 c A24
2007-12-17 21:05:38 C 02 14 00.39 +26 05 08.2 c A24
2007-12-17 21:06:44 C 02 14 00.30 +26 05 08.3 c A24
2007-12-18 03:08:10 C 02 13 41.25 +26 10 16.7 17.9 c 704
2007-12-18 03:26:40 C 02 13 40.19 +26 10 32.3 17.9 c 704
2007-12-18 03:45:23 C 02 13 39.09 +26 10 47.3 18.1 c 704
2007-12-18 04:03:50 C 02 13 38.01 +26 11 03.0 18.2 c 704
2007-12-18 04:22:18 C 02 13 36.93 +26 11 18.4 18.1 c 704
2007-12-27 20:32:28 C 02 05 27.80 +29 08 49.2 c A24
2007-12-27 20:33:54 C 02 05 27.81 +29 08 50.4 c A24
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)