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
1997-12-18 10:58:59 C 04 47 18.88 +26 42 14.0 658
1997-12-27 23:56:07 C 04 42 25.52 +26 32 53.9 z 104
1997-12-28 00:03:29 C 04 42 25.47 +26 32 53.7 z 104
1997-12-28 00:11:59 C 04 42 25.38 +26 32 53.2 z 104
1997-12-28 00:20:30 C 04 42 25.29 +26 32 52.8 z 104
1997-12-30 07:17:56 C 04 42 04.57 +26 30 45.7 z 711
1997-12-30 07:37:12 C 04 42 04.37 +26 30 44.9 z 711
1997-12-31 07:09:34 C 04 42 00.82 +26 29 51.0 z 711
1997-12-31 07:28:38 C 04 42 00.74 +26 29 51.5 z 711
1998-01-01 06:22:23 C 04 42 00.64 +26 29 01.4 z 711
1998-01-01 06:41:43 C 04 42 00.50 +26 28 59.8 z 711
1998-01-02 06:23:37 C 04 42 03.13 +26 28 10.8 z 711
1998-01-02 06:42:45 C 04 42 03.14 +26 28 09.4 z 711
2013-05-08 10:28:51 C 15 32 21.657 -18 37 31.16 L F51
2013-05-08 10:49:09 C 15 32 20.192 -18 37 27.91 L F51
2013-05-08 11:09:27 C 15 32 18.709 -18 37 24.65 L F51
2013-05-08 11:29:48 C 15 32 17.242 -18 37 21.51 L F51
2013-05-08 21:04:51 C 15 31 37.59 -18 35 38.9 q K93
2013-05-08 21:14:07 C 15 31 36.90 -18 35 37.5 q K93
2013-05-08 21:23:22 C 15 31 36.23 -18 35 36.2 q K93
2013-05-16 06:30:11 C 15 18 08.53 -18 02 57.6 u G96
2013-05-16 06:40:21 C 15 18 07.70 -18 02 55.3 u G96
2013-05-16 06:50:21 C 15 18 06.84 -18 02 53.5 u G96
2013-05-16 07:00:29 C 15 18 05.94 -18 02 52.0 u G96
2013-05-16 08:10:51 C 15 18 00.03 -18 02 36.6 u G96
2013-05-16 08:14:08 C 15 17 59.78 -18 02 36.3 u G96
2013-05-16 08:17:24 C 15 17 59.46 -18 02 35.3 u G96
2013-11-05 00:04:05 C 20 04 36.54 -28 34 58.4 u 807
2013-11-05 00:07:38 C 20 04 39.03 -28 34 49.9 u 807
2013-11-05 00:11:13 C 20 04 41.51 -28 34 41.7 u 807
2013-11-05 00:14:45 C 20 04 44.04 -28 34 33.4 u 807
2013-11-12 02:15:30 C 22 28 41.58 -15 45 14.2 o 291
2013-11-12 02:15:57 C 22 28 41.97 -15 45 11.1 o 291
2013-11-12 02:16:25 C 22 28 42.35 -15 45 08.2 o 291
2013-11-19 03:27:33 C 00 31 40.76 +01 51 23.6 u H21
2013-11-19 03:30:15 C 00 31 42.19 +01 51 37.1 u H21
2013-11-19 03:33:05 C 00 31 43.70 +01 51 51.1 u H21
2013-11-19 03:35:47 C 00 31 45.15 +01 52 04.7 u H21
2013-11-19 03:38:21 C 00 31 46.52 +01 52 17.6 u H21
2013-11-19 13:00:40 C 00 36 51.70 +02 38 21.5 o 300
2013-11-19 13:01:43 C 00 36 52.20 +02 38 27.3 o 300
2013-11-19 13:02:45 C 00 36 52.74 +02 38 31.7 o 300
2013-11-19 20:51:06 C 00 41 00.68 +03 15 10.9 q J84
2013-11-19 20:56:32 C 00 41 03.41 +03 15 36.0 q J84
2013-11-19 21:01:56 C 00 41 06.13 +03 16 01.3 q J84
2013-11-20 02:52:08 C 00 44 05.62 +03 43 05.8 u H21
2013-11-20 02:55:57 C 00 44 07.48 +03 43 23.4 u H21
2013-11-20 03:00:03 C 00 44 09.48 +03 43 41.7 u H21
2013-11-20 03:04:07 C 00 44 11.47 +03 44 00.3 u H21
2013-11-20 03:06:51 C 00 44 12.79 +03 44 12.7 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)