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
2024-01-15 14:14:32 C 14 13 22.618 +33 14 04.67 V T08
2024-01-15 14:19:12 C 14 13 23.196 +33 14 05.96 V T08
2024-01-15 14:46:08 C 14 13 26.621 +33 14 08.59 V T08
2024-01-16 12:36:02 C 14 16 16.129 +33 16 14.48 V 703
2024-01-16 12:39:10 C 14 16 16.540 +33 16 13.08 V 703
2024-01-16 12:45:31 C 14 16 17.346 +33 16 13.55 V 703
2024-01-21 13:11:10 C 14 31 37.517 +33 28 07.68 V T05
2024-01-21 13:15:47 C 14 31 38.062 +33 28 08.62 V T05
2024-01-21 13:23:41 C 14 31 38.986 +33 28 09.84 V T05
2024-01-21 13:38:14 C 14 31 40.829 +33 28 11.42 V T05
2024-01-31 14:07:01 C 15 00 48.190 +33 53 24.32 V T08
2024-01-31 14:09:01 C 15 00 48.449 +33 53 23.57 V T08
2024-01-31 14:13:08 C 15 00 48.917 +33 53 24.25 V T08
2024-01-31 14:27:50 C 15 00 50.592 +33 53 26.38 V T08
2024-01-31 14:33:49 C 15 00 51.182 +33 53 26.92 V T08
2024-02-03 14:16:56 C 15 09 06.919 +34 01 23.05 V T08
2024-02-03 14:21:35 C 15 09 07.397 +34 01 23.45 V T08
2024-02-03 14:31:09 C 15 09 08.467 +34 01 24.42 V T08
2024-02-03 14:43:25 C 15 09 09.840 +34 01 26.00 V T08
2024-02-04 13:47:54 C 15 11 46.690 +34 04 00.23 V T08
2024-02-04 13:52:34 C 15 11 47.261 +34 04 01.42 V T08
2024-02-04 14:01:12 C 15 11 48.154 +34 04 02.32 V T08
2024-02-04 14:15:31 C 15 11 49.771 +34 04 04.55 V T08
2024-02-05 13:44:56 C 15 14 27.962 +34 06 43.27 V T05
2024-02-05 13:49:00 C 15 14 28.373 +34 06 44.28 V T05
2024-02-05 13:56:51 C 15 14 29.294 +34 06 44.75 V T05
2024-02-05 14:02:42 C 15 14 29.974 +34 06 45.36 V T05
2024-02-05 14:15:06 C 15 14 31.270 +34 06 46.94 V T05
2024-02-05 14:30:10 C 15 14 32.890 +34 06 49.21 V T05
2024-02-06 14:02:37 C 15 17 09.818 +34 09 29.27 V T05
2024-02-06 14:07:10 C 15 17 10.418 +34 09 30.56 V T05
2024-02-06 14:11:48 C 15 17 10.903 +34 09 31.10 V T05
2024-02-06 14:20:10 C 15 17 11.786 +34 09 30.74 V T05
2024-02-09 13:53:37 C 15 24 59.897 +34 17 47.54 V T05
2024-02-09 13:58:15 C 15 25 00.358 +34 17 47.90 V T05
2024-02-09 14:05:48 C 15 25 01.140 +34 17 49.31 V T05
2024-02-09 14:21:57 C 15 25 02.743 +34 17 51.14 V T05
2024-02-13 13:36:01 C 15 35 03.490 +34 28 58.04 V T05
2024-02-13 13:40:37 C 15 35 03.922 +34 28 56.89 V T05
2024-02-13 13:48:33 C 15 35 04.740 +34 28 58.80 V T05
2024-02-13 14:03:11 C 15 35 06.118 +34 29 02.44 V T05
2024-02-14 13:32:45 C 15 37 30.398 +34 31 45.12 V T05
2024-02-14 13:40:38 C 15 37 31.205 +34 31 44.87 V T05
2024-02-14 13:44:32 C 15 37 31.567 +34 31 45.95 V T05
2024-02-14 13:49:07 C 15 37 31.966 +34 31 47.32 V T05
2024-02-15 12:57:32 C 15 39 51.714 +34 34 27.34 V 703
2024-02-15 13:00:47 C 15 39 52.128 +34 34 27.23 V 703
2024-02-15 13:04:03 C 15 39 52.402 +34 34 28.20 V 703
2024-02-15 13:07:19 C 15 39 52.708 +34 34 27.80 V 703
2024-02-18 11:56:30 C 15 46 52.597 +34 42 36.32 V G96
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)