1997 WQ23

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4948340222 ± 3.72e-08
Semi-major axis (a)1.7374212866 AU ± 5.17e-09
Inclination (i)2.44768883° ± 6.63e-06
Long. of Asc. Node (Ω)55.80797335° ± 3.75e-05
Arg. of Perihelion (ω)296.63541243° ± 3.91e-05
Mean Anomaly (M)107.20777495° ± 9.38e-06
Mean Motion (n)0.4303824654°/day ± 1.92e-09
Perihelion dist (q)0.87768612 AU ± 6.48e-08
Aphelion dist (Q)2.59715645 AU ± 6.52e-08
Orbital Period2.29011719 yr ± 1.02e-08
Physical Parameters
H (abs. magnitude)20.88
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.510″
Uncertainty0
Orbit TypeApollo
MOID0.010049 AU
Observations Used171
Radar Obs Used3
Oppositions9
Arc Total1997-2020
First Observation Used1997-11-29
Last Observation Used2020-12-18
Observations (185)
Date Type RA Dec Mag Band Observatory
2013-11-29 20:08:29 C 02 04 23.99 +14 49 27.1 q 160
2013-12-03 20:11:41 C 02 23 36.81 +17 03 53.8 19.0 q 151
2013-12-03 20:15:27 C 02 23 37.45 +17 03 58.2 18.8 q 151
2013-12-03 20:19:14 C 02 23 38.06 +17 04 02.7 18.7 q 151
2013-12-03 20:41:53 C 02 23 41.83 +17 04 28.6 18.8 q 151
2013-12-03 20:45:40 C 02 23 42.45 +17 04 33.1 18.9 q 151
2013-12-03 20:49:27 C 02 23 43.08 +17 04 37.6 19.0 q 151
2013-12-04 22:22:47 C 02 28 02.91 +17 33 10.5 q 160
2013-12-04 22:26:43 C 02 28 03.55 +17 33 14.7 q 160
2013-12-04 22:30:38 C 02 28 04.16 +17 33 19.2 q 160
2013-12-10 04:38:44 C 02 46 16.15 +19 24 06.6 q 448
2013-12-10 04:50:29 C 02 46 17.50 +19 24 14.7 q 448
2013-12-10 05:00:49 C 02 46 18.68 +19 24 22.1 q 448
2013-12-24 08:21:55 C 03 20 21.76 +22 08 37.2 o 291
2013-12-24 08:24:42 C 03 20 21.98 +22 08 37.9 o 291
2013-12-24 08:27:28 C 03 20 22.21 +22 08 38.9 o 291
2014-01-07 08:04:56 C 03 46 04.88 +23 34 24.4 o 291
2014-01-07 08:13:16 C 03 46 05.52 +23 34 25.6 o 291
2014-01-07 08:21:36 C 03 46 06.06 +23 34 27.9 o 291
2020-06-16 13:50:37 C 22 30 33.467 -16 42 18.34 U F51
2020-06-16 14:26:05 C 22 30 44.549 -16 41 33.42 U F51
2020-06-23 03:56:38 C 23 25 26.93 -12 35 05.0 V K93
2020-06-23 04:03:29 C 23 25 29.40 -12 34 52.2 V K93
2020-06-23 04:09:30 C 23 25 31.58 -12 34 40.5 V K93
2020-07-02 19:19:50 S 00 55 42.69 -04 09 28.5 L C51
2020-07-02 19:20:02 S 00 55 42.77 -04 09 28.0 L C51
2020-07-02 22:28:21 S 00 56 56.98 -04 01 56.6 L C51
2020-07-03 00:02:25 S 00 57 34.09 -03 58 12.5 L C51
2020-07-03 01:36:40 S 00 58 11.22 -03 54 26.9 L C51
2020-07-03 03:10:44 S 00 58 48.28 -03 50 42.0 L C51
2020-07-03 04:44:59 S 00 59 25.37 -03 46 56.1 L C51
2020-07-03 06:19:03 S 01 00 02.35 -03 43 10.8 L C51
2020-07-03 09:27:22 S 01 01 16.38 -03 35 39.7 L C51
2020-12-18 08:24:14 C 08 46 02.23 +22 09 15.9 u H21
2020-12-18 08:31:07 C 08 46 01.78 +22 09 18.1 u H21
Radar Observations (3)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2013-11-19 00:25:00 -124458.2215 0.3 Hz 2380 -1 -1
2013-11-19 00:38:00 96148022.94 4 us 2380 -1 -1
2013-11-22 01:53:00 111982347.7 1 us 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)