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
2024-05-16 14:20:22 V 15 44 39.81 -04 38 09.4 V 270
2024-05-16 14:20:22 v 1 140.17435 +36.06241 270
2024-05-16 14:27:06 V 15 44 38.87 -04 38 55.5 V 270
2024-05-16 14:27:06 v 1 130.69587 +31.75623 270
2024-05-16 14:40:04 V 15 44 35.60 -04 40 32.8 V 270
2024-05-16 14:40:04 v 1 130.69587 +31.75623 270
2024-05-16 14:48:10 V 15 44 34.93 -04 41 22.6 V 270
2024-05-16 14:48:10 v 1 114.16981 +22.37600 270
2024-05-16 14:52:59 V 15 44 32.33 -04 42 09.3 V 270
2024-05-16 14:52:59 v 1 130.69587 +31.75623 270
2024-05-16 14:59:09 V 15 44 32.10 -04 42 43.6 V 270
2024-05-16 14:59:09 v 1 114.16981 +22.37600 270
2024-05-16 15:05:53 V 15 44 29.06 -04 43 46.2 V 270
2024-05-16 15:05:53 v 1 130.69587 +31.75623 270
2024-05-16 15:06:49 V 15 44 28.12 -04 43 56.0 V 270
2024-05-16 15:06:49 v 1 140.17435 +36.06241 270
2024-05-16 15:10:52 V 15 44 29.15 -04 44 12.0 V 270
2024-05-16 15:10:52 v 1 114.16981 +22.37600 270
2024-05-16 15:27:18 V 15 44 24.90 -04 46 15.3 V 270
2024-05-16 15:27:18 v 1 114.16981 +22.37600 270
2024-05-16 15:55:49 V 15 44 15.77 -04 50 03.0 V 270
2024-05-16 15:55:49 v 1 140.17435 +36.06241 270
2024-05-16 16:34:36 V 15 44 06.08 -04 54 52.7 V 270
2024-05-16 16:34:36 v 1 140.17435 +36.06241 270
2024-05-16 23:02:38 C 15 42 35.71 -05 43 53.2 M32
2024-05-16 23:03:47 C 15 42 35.43 -05 44 01.9 M32
2024-05-16 23:04:57 C 15 42 35.13 -05 44 10.6 M32
2024-05-16 23:06:06 C 15 42 34.84 -05 44 19.5 M32
2024-05-16 23:07:16 C 15 42 34.54 -05 44 28.3 M32
2024-05-16 23:08:26 C 15 42 34.25 -05 44 37.1 M32
2024-05-16 23:09:22 C 15 42 34.02 -05 44 44.0 M32
2024-05-17 04:05:12 C 15 41 24.518 -06 20 44.88 V W68
2024-05-17 04:07:52 C 15 41 23.839 -06 21 05.18 V W68
2024-05-17 04:11:48 C 15 41 22.807 -06 21 35.42 V W68
2024-05-17 04:34:45 C 15 41 16.841 -06 24 31.03 V W68
2024-05-17 12:58:28 V 15 39 16.52 -07 30 32.2 V 270
2024-05-17 12:58:28 v 1 134.17914 +34.51190 270
2024-05-17 13:00:19 V 15 39 15.62 -07 30 47.9 V 270
2024-05-17 13:00:19 v 1 140.17436 +36.06242 270
2024-05-17 13:00:22 V 15 39 15.71 -07 30 47.6 V 270
2024-05-17 13:00:22 v 1 139.13620 +35.33846 270
2024-05-17 13:00:25 V 15 39 15.97 -07 30 48.3 V 270
2024-05-17 13:00:25 v 1 134.35900 +35.08986 270
2024-05-17 13:25:59 V 15 39 08.97 -07 34 06.9 V 270
2024-05-17 13:25:59 v 1 139.13620 +35.33846 270
2024-05-17 13:26:24 V 15 39 08.76 -07 34 11.2 V 270
2024-05-17 13:26:24 v 1 140.17436 +36.06242 270
2024-05-17 13:26:34 V 15 39 09.14 -07 34 11.3 V 270
2024-05-17 13:26:34 v 1 134.35900 +35.08986 270
2024-05-17 13:37:12 V 15 39 06.39 -07 35 33.7 V 270
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)