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
2024-05-25 02:24:14 B 14 46 54.04 -31 52 05.9 W X16
2024-05-25 05:35:14 V 14 45 49.32 -32 17 00.7 V 270
2024-05-25 05:35:14 v 1 262.26400 +35.56951 270
2024-05-25 05:48:48 V 14 45 44.60 -32 18 44.3 V 270
2024-05-25 05:48:48 v 1 262.26400 +35.56951 270
2024-05-25 06:01:42 V 14 45 40.03 -32 20 19.9 V 270
2024-05-25 06:01:42 v 1 262.26400 +35.56951 270
2024-05-25 06:14:33 V 14 45 35.53 -32 21 56.4 V 270
2024-05-25 06:14:33 v 1 262.26400 +35.56951 270
2024-05-25 23:06:36 C 14 39 56.798 -34 25 27.73 V M22
2024-05-25 23:11:16 C 14 39 55.138 -34 26 01.18 V M22
2024-05-25 23:19:01 C 14 39 52.378 -34 26 56.94 V M22
2024-05-25 23:41:05 C 14 39 44.544 -34 29 35.05 V M22
2024-05-27 04:11:53 C 14 30 01.901 -37 50 14.28 V W68
2024-05-27 04:17:14 C 14 29 59.916 -37 50 50.46 V W68
2024-05-27 04:51:05 C 14 29 47.477 -37 54 37.66 V W68
2024-05-27 04:59:02 C 14 29 44.563 -37 55 30.90 V W68
2024-05-27 21:46:15 C 14 23 54.890 -39 46 51.89 V M22
2024-05-27 21:51:48 C 14 23 52.822 -39 47 27.60 V M22
2024-05-27 22:00:00 C 14 23 49.762 -39 48 20.23 V M22
2024-05-27 22:14:15 C 14 23 44.450 -39 49 51.53 V M22
2024-05-31 21:48:59 C 13 49 25.193 -48 44 30.95 V M22
2024-05-31 21:53:37 C 13 49 23.405 -48 44 52.37 V M22
2024-05-31 22:21:32 C 13 49 12.706 -48 47 01.21 V M22
2024-05-31 22:24:34 C 13 49 11.556 -48 47 15.25 V M22
2024-06-03 04:44:57 C 13 29 31.699 -52 38 36.28 V W68
2024-06-03 04:49:38 C 13 29 29.959 -52 38 53.63 V W68
2024-06-03 05:19:57 C 13 29 18.617 -52 40 44.90 V W68
2024-06-03 05:28:52 C 13 29 15.322 -52 41 17.48 V W68
2024-06-07 02:28:35 C 12 56 57.914 -57 36 43.74 V W68
2024-06-07 02:38:13 C 12 56 54.485 -57 37 08.04 V W68
2024-06-07 02:57:39 C 12 56 47.602 -57 37 56.82 V W68
2024-07-06 17:06:21 C 10 48 29.774 -69 42 39.17 V M22
2024-07-06 17:10:56 C 10 48 29.530 -69 42 41.58 V M22
2024-07-06 17:19:26 C 10 48 28.877 -69 42 45.25 V M22
2024-07-06 17:42:21 C 10 48 27.149 -69 42 56.27 V M22
2024-07-08 23:05:29 C 10 45 39.005 -70 12 29.23 V W68
2024-07-08 23:33:16 C 10 45 37.349 -70 12 42.62 V W68
2024-07-08 23:38:41 C 10 45 37.030 -70 12 45.14 V W68
2024-07-08 23:46:06 C 10 45 36.624 -70 12 49.50 V W68
2024-07-09 05:16:20 S 10 45 23.79 -70 15 34.2 L C51
2024-07-09 06:48:12 S 10 45 19.60 -70 16 25.7 L C51
2024-07-09 08:20:04 S 10 45 15.58 -70 17 15.4 L C51
2024-07-09 14:27:43 S 10 44 59.28 -70 20 40.9 L C51
2024-07-09 17:31:38 S 10 44 51.30 -70 22 23.4 L C51
2024-07-09 20:35:33 S 10 44 43.42 -70 24 06.8 L C51
2024-07-09 22:07:26 S 10 44 39.74 -70 24 57.7 L C51
2024-07-10 01:11:09 S 10 44 32.13 -70 26 39.8 L C51
2024-07-10 05:46:56 S 10 44 20.73 -70 29 15.8 L C51
2024-07-10 08:50:51 S 10 44 13.36 -70 30 58.5 L C51
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)