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
2020-10-27 12:04:03 C 07 32 41.29 +28 17 54.4 V G96
2020-10-27 12:10:12 C 07 32 41.72 +28 18 00.1 V G96
2020-11-04 12:25:44 C 07 46 58.58 +31 43 08.9 V T08
2020-11-04 12:32:22 C 07 46 59.07 +31 43 16.8 V T08
2020-11-04 12:41:40 C 07 46 59.67 +31 43 26.9 V T08
2020-11-04 12:54:57 C 07 47 00.67 +31 43 42.3 V T08
2020-11-10 10:20:47 C 07 56 50.63 +34 37 03.9 U I41
2020-11-10 10:21:26 C 07 56 50.68 +34 37 04.8 U I41
2020-11-10 10:35:38 C 07 56 51.57 +34 37 23.5 U I41
2020-11-10 12:29:37 C 07 56 58.81 +34 39 52.3 U I41
2020-11-10 13:19:10 C 07 57 02.58 +34 40 58.8 V T05
2020-11-10 13:24:27 C 07 57 02.90 +34 41 05.4 V T05
2020-11-10 13:28:24 C 07 57 03.15 +34 41 10.8 V T05
2020-11-10 13:53:05 C 07 57 04.72 +34 41 43.3 V T05
2020-11-12 08:09:52 C 07 59 52.97 +35 37 41.2 V 703
2020-11-12 08:16:54 C 07 59 53.43 +35 37 51.1 V 703
2020-11-12 08:30:58 C 07 59 54.25 +35 38 10.1 V 703
2020-11-15 07:59:00 C 08 04 27.84 +37 17 21.3 V 703
2020-11-15 08:06:48 C 08 04 28.40 +37 17 31.9 V 703
2020-11-15 08:22:23 C 08 04 29.26 +37 17 55.1 V 703
2020-11-15 10:24:22 C 08 04 36.54 +37 20 51.2 U I41
2020-11-15 10:25:43 C 08 04 36.61 +37 20 53.1 U I41
2020-11-15 11:12:06 C 08 04 39.31 +37 22 00.0 U I41
2020-11-15 11:25:31 C 08 04 40.10 +37 22 19.4 U I41
2020-11-16 08:59:26 C 08 06 00.20 +37 53 24.7 U I41
2020-11-16 09:00:06 C 08 06 00.23 +37 53 25.6 U I41
2020-11-16 11:48:00 C 08 06 09.86 +37 57 32.3 U I41
2020-11-16 12:23:53 C 08 06 11.89 +37 58 24.7 U I41
2020-11-17 04:42:39 C 08 07 11.99 +38 22 15.9 V W33
2020-11-17 04:48:52 C 08 07 12.36 +38 22 24.9 V W33
2020-11-17 04:55:05 C 08 07 12.71 +38 22 34.2 V W33
2020-11-18 08:20:31 C 08 08 50.09 +39 03 33.9 V 703
2020-11-18 08:36:07 C 08 08 50.91 +39 03 56.7 V 703
2020-11-18 08:43:55 C 08 08 51.30 +39 04 08.6 V 703
2020-11-19 13:47:06 C 08 10 31.84 +39 48 30.1 V T05
2020-11-19 13:50:26 C 08 10 32.00 +39 48 35.9 V T05
2020-11-19 13:55:03 C 08 10 32.28 +39 48 42.6 V T05
2020-11-19 14:03:37 C 08 10 32.72 +39 48 56.1 V T05
2020-11-19 15:41:24 C 08 10 37.80 +39 51 27.0 V T05
2020-11-21 01:38:52 C 08 12 32.38 +40 44 20.7 o K88
2020-11-21 01:51:11 C 08 12 33.01 +40 44 40.3 o K88
2020-11-21 02:03:26 C 08 12 33.66 +40 45 00.1 o K88
2020-11-21 07:50:34 C 08 12 53.43 +40 54 09.2 V 703
2020-11-21 08:06:25 C 08 12 54.21 +40 54 34.9 V 703
2020-11-21 08:14:21 C 08 12 54.57 +40 54 48.2 V 703
2020-11-24 09:34:37 C 08 16 44.67 +42 54 06.1 V 703
2020-11-24 09:50:14 C 08 16 45.38 +42 54 32.6 V 703
2020-11-24 09:58:03 C 08 16 45.75 +42 54 46.1 V 703
2020-11-25 15:11:02 C 08 18 10.85 +43 43 55.8 V T08
2020-11-25 15:16:29 C 08 18 11.08 +43 44 05.2 V T08
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)