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
2024-09-07 02:11:24 C 18 07 02.028 -85 22 30.65 V W68
2024-09-07 02:55:17 C 18 07 44.359 -85 21 55.33 V W68
2024-09-07 03:21:46 C 18 08 09.900 -85 21 34.16 V W68
2024-09-07 03:26:26 C 18 08 14.606 -85 21 30.13 V W68
2024-09-07 03:33:52 C 18 08 21.766 -85 21 24.16 V W68
2024-09-07 03:54:59 C 18 08 42.290 -85 21 07.56 V W68
2024-09-15 02:30:03 C 20 09 59.443 -81 47 42.79 V W68
2024-09-15 02:56:26 C 20 10 08.748 -81 47 06.11 V W68
2024-09-15 03:05:04 C 20 10 11.750 -81 46 54.34 V W68
2024-09-15 03:30:33 C 20 10 20.875 -81 46 18.26 V W68
2024-09-15 03:44:10 C 20 10 25.790 -81 45 59.69 V W68
2024-09-15 03:48:45 C 20 10 27.434 -81 45 53.14 V W68
2024-09-15 04:03:17 C 20 10 32.604 -81 45 31.68 V W68
2024-09-16 11:03:56 C 20 21 32.59 -81 02 22.3 q Q62
2024-09-16 11:23:12 C 20 21 38.61 -81 01 54.9 q Q62
2024-09-16 11:41:51 C 20 21 44.29 -81 01 28.2 q Q62
2024-09-24 20:20:11 C 21 08 41.294 -75 50 38.18 V M22
2024-09-24 20:24:54 C 21 08 41.976 -75 50 30.66 V M22
2024-09-24 20:32:50 C 21 08 43.162 -75 50 17.12 V M22
2024-09-24 20:47:59 C 21 08 45.574 -75 49 52.10 V M22
2024-10-22 20:00:12 C 22 19 00.538 -54 46 36.77 V M22
2024-10-22 20:04:13 C 22 19 00.826 -54 46 29.06 V M22
2024-10-22 20:12:14 C 22 19 01.339 -54 46 12.68 V M22
2024-10-22 20:26:50 C 22 19 02.371 -54 45 42.41 V M22
2024-10-30 19:38:11 C 22 33 16.159 -48 19 13.44 V M22
2024-10-30 19:42:49 C 22 33 16.368 -48 19 03.94 V M22
2024-10-30 20:11:25 C 22 33 18.418 -48 18 06.44 V M22
2024-10-30 20:19:22 C 22 33 18.955 -48 17 49.92 V M22
2024-11-19 01:49:02 C 23 05 49.601 -33 08 24.43 V W68
2024-11-19 01:53:38 C 23 05 49.982 -33 08 15.97 V W68
2024-11-19 02:03:35 C 23 05 50.606 -33 07 57.00 V W68
2024-11-19 02:20:13 C 23 05 51.720 -33 07 24.67 V W68
2024-12-27 01:37:43 C 00 10 34.540 -07 54 43.24 V G96
2024-12-27 01:45:52 C 00 10 35.108 -07 54 31.25 V G96
2024-12-27 01:54:01 C 00 10 35.706 -07 54 20.02 V G96
2024-12-27 02:02:10 C 00 10 36.282 -07 54 08.32 V G96
2025-01-21 12:17:08 C 00 57 46.357 +05 14 38.81 O18
2025-01-21 14:22:18 C 00 57 56.351 +05 17 05.22 O18
2025-01-22 12:17:05 C 00 59 43.176 +05 42 37.70 O18
2025-01-22 14:18:32 C 00 59 52.921 +05 44 58.88 O18
2025-01-23 12:21:25 C 01 01 40.866 +06 10 29.82 O18
2025-01-23 14:17:58 C 01 01 50.267 +06 12 44.21 O18
2025-01-23 14:19:39 C 01 01 50.421 +06 12 46.16 O18
2025-01-26 12:24:54 C 01 07 36.209 +07 32 41.24 O18
2025-01-26 12:26:31 C 01 07 36.335 +07 32 43.07 O18
2025-02-22 03:29:02 C 02 03 55.940 +18 28 02.21 V V00
2025-02-22 03:29:56 C 02 03 56.041 +18 28 02.86 V V00
2025-02-22 03:37:08 C 02 03 56.700 +18 28 09.55 V V00
2025-02-22 03:38:02 C 02 03 56.761 +18 28 10.67 V V00
2025-02-22 03:45:12 C 02 03 57.449 +18 28 17.08 V V00
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)