1997 QK1

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6464564851 ± 2.23e-09
Semi-major axis (a)2.7831080593 AU ± 9.82e-09
Inclination (i)2.85157676° ± 8.08e-07
Long. of Asc. Node (Ω)306.46998690° ± 6.95e-06
Arg. of Perihelion (ω)3.20882168° ± 7.41e-06
Mean Anomaly (M)22.59403957° ± 3.29e-07
Mean Motion (n)0.2122839562°/day ± 1.12e-09
Perihelion dist (q)0.98394981 AU ± 7.12e-09
Aphelion dist (Q)4.58226631 AU ± 1.73e-08
Orbital Period4.64296172 yr ± 2.46e-08
NGA Modelr2
A2-3.21088531e-14 ± 1.35e-14 AU/d²
Physical Parameters
H (abs. magnitude)20.26
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.250″
Uncertainty0
Orbit TypeApollo
MOID0.017116 AU
Observations Used662
Radar Obs Used9
Oppositions22
Arc Total1997-2025
First Observation Used1997-08-27
Last Observation Used2025-11-13
Observations (726)
Date Type RA Dec Mag Band Observatory
1997-09-28 11:30:29 C 21 19 33.36 -01 56 42.1 360
1997-09-29 12:43:30 C 21 27 22.57 -01 26 42.4 z 402
1997-09-29 12:51:29 C 21 27 24.88 -01 26 33.4 z 402
1997-09-29 12:55:29 C 21 27 26.06 -01 26 28.0 z 402
1997-09-30 05:08:00 C 21 32 15.95 -01 08 02.4 z 684
1997-09-30 05:13:44 C 21 32 17.79 -01 07 55.5 z 684
1997-09-30 05:19:45 C 21 32 19.41 -01 07 49.1 z 684
1997-09-30 10:59:29 C 21 33 59.43 -01 01 32.2 z 402
1997-09-30 11:02:29 C 21 34 00.18 -01 01 29.1 z 402
1997-09-30 11:05:28 C 21 34 01.07 -01 01 26.6 z 402
1997-10-01 05:14:27 C 21 39 09.91 -00 41 48.3 z 684
1997-10-01 05:20:54 C 21 39 11.62 -00 41 40.8 z 684
1997-10-01 05:37:39 C 21 39 16.23 -00 41 23.7 z 684
1997-10-01 19:58:55 C 21 43 14.03 -00 26 32.9 z 587
1997-10-01 20:04:10 C 21 43 15.36 -00 26 25.2 z 587
1997-10-05 19:46:31 C 22 06 54.51 +01 01 38.2 z 046
1997-10-05 19:50:28 C 22 06 55.37 +01 01 41.6 z 046
1997-10-05 19:55:18 C 22 06 56.38 +01 01 45.4 z 046
1997-10-05 23:08:17 C 22 07 38.44 +01 04 23.2 z 118
1997-10-05 23:12:07 C 22 07 39.27 +01 04 26.3 z 118
1997-10-05 23:16:26 C 22 07 40.21 +01 04 29.9 z 118
1997-10-08 14:03:14 C 22 20 54.08 +01 52 23.2 z 402
1997-10-08 14:07:15 C 22 20 54.85 +01 52 24.8 z 402
1997-10-08 14:11:15 C 22 20 55.46 +01 52 26.9 z 402
1997-10-08 20:26:00 C 22 22 10.52 +01 56 49.1 z 104
1997-10-08 20:30:29 C 22 22 11.37 +01 56 51.9 z 104
1997-10-08 20:35:00 C 22 22 12.25 +01 56 54.5 z 104
1997-10-18 17:42:42 C 23 00 34.64 +04 07 20.9 z 118
1997-10-18 17:47:49 C 23 00 35.33 +04 07 22.9 z 118
1997-10-18 18:02:44 C 23 00 37.25 +04 07 28.9 z 118
1997-10-19 18:17:22 C 23 03 48.56 +04 17 47.7 z 118
1997-10-19 18:19:53 C 23 03 48.89 +04 17 49.1 z 118
1997-10-20 04:26:51 C 23 05 06.55 +04 21 59.1 658
1997-10-20 04:34:57 C 23 05 07.58 +04 22 02.5 658
1997-10-21 06:00:31 C 23 08 18.75 +04 32 15.5 658
1997-10-21 06:20:23 C 23 08 20.98 +04 32 21.9 658
1997-10-21 06:25:12 C 23 08 21.61 +04 32 24.1 658
1997-10-24 03:40:53 C 23 16 33.22 +04 58 12.7 658
1997-10-24 03:46:22 C 23 16 33.73 +04 58 16.0 658
1997-10-24 03:54:40 C 23 16 34.71 +04 58 18.1 658
1997-10-24 05:41:40 C 23 16 47.10 +04 59 05.9 a 568
1997-10-24 05:46:40 C 23 16 47.58 +04 59 07.6 a 568
1997-10-24 05:49:24 C 23 16 47.88 +04 59 08.6 a 568
1997-10-24 05:54:24 C 23 16 48.46 +04 59 10.4 a 568
1997-10-24 09:44:20 C 23 17 13.07 +05 00 31.8 a 568
1997-10-24 09:49:20 C 23 17 13.58 +05 00 33.4 a 568
1997-10-24 09:52:24 C 23 17 13.96 +05 00 34.5 a 568
1997-10-24 09:57:23 C 23 17 14.49 +05 00 36.2 a 568
1997-11-05 11:30:36 C 23 45 36.41 +06 28 38.3 z 381
1997-11-05 11:42:48 C 23 45 37.27 +06 28 42.3 z 381
Radar Observations (9)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2025-08-15 00:20:00 466498.317 2 Hz 8560 -14 -14
2025-08-15 00:50:00 463286.158 2 Hz 8560 -14 -14
2025-08-15 01:20:00 36485008.073 20 us 8560 -14 -14
2025-08-15 02:00:00 36356530.241 2 us 8560 -14 -14
2025-08-17 01:30:00 27686626.8 1 us 8560 -14 -14
2025-08-19 01:50:00 190642.014 0.5 Hz 8560 -14 -14
2025-08-19 02:50:00 21397165.78 0.375 us 8560 -14 -14
2025-08-21 10:30:00 20857634.07 0.3 us 8560 -14 -14
2025-08-23 08:10:00 25919414.9 0.2 us 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m)