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
1997-09-21 18:37:19 C 20 19 40.73 -05 44 42.8 z 118
1997-09-21 18:42:10 C 20 19 42.76 -05 44 36.1 z 118
1997-09-21 18:43:39 C 20 19 43.41 -05 44 32.8 z 118
1997-09-22 17:58:42 C 20 29 28.61 -05 08 08.7 z 118
1997-09-22 18:02:23 C 20 29 30.11 -05 08 03.6 z 118
1997-09-22 18:14:25 C 20 29 34.91 -05 07 44.5 z 118
1997-09-22 18:22:50 C 20 29 38.33 -05 07 31.5 z 118
1997-09-22 18:30:55 C 20 29 41.54 -05 07 18.4 z 118
1997-09-22 18:43:31 C 20 29 46.65 -05 06 58.8 z 118
1997-09-23 19:50:18 C 20 39 51.85 -04 28 50.0 z 118
1997-09-23 19:54:46 C 20 39 53.57 -04 28 43.4 z 118
1997-09-24 20:11:00 C 20 49 14.12 -03 53 08.6 z 118
1997-09-24 20:13:28 C 20 49 15.07 -03 53 05.1 z 118
1997-09-24 20:16:16 C 20 49 16.08 -03 53 00.6 z 118
1997-09-25 19:41:12 C 20 57 54.31 -03 19 58.5 z 046
1997-09-25 19:43:20 C 20 57 55.01 -03 19 55.8 z 046
1997-09-25 20:01:30 C 20 58 01.33 -03 19 31.4 z 046
1997-09-25 20:02:57 C 20 58 01.88 -03 19 29.2 z 046
1997-09-25 20:06:48 C 20 58 03.32 -03 19 22.7 z 046
1997-09-26 19:02:46 C 21 06 08.75 -02 48 21.7 557
1997-09-26 19:06:04 C 21 06 09.85 -02 48 17.5 557
1997-09-26 19:07:39 C 21 06 10.37 -02 48 14.7 557
1997-09-26 19:09:29 C 21 06 11.02 -02 48 12.7 z 046
1997-09-26 19:10:42 C 21 06 11.43 -02 48 10.8 z 046
1997-09-26 19:11:54 C 21 06 11.83 -02 48 09.2 z 046
1997-09-26 19:13:07 C 21 06 12.25 -02 48 07.4 z 046
1997-09-26 19:14:19 C 21 06 12.61 -02 48 06.2 z 046
1997-09-26 19:18:03 C 21 06 13.93 -02 48 02.0 z 118
1997-09-26 19:23:06 C 21 06 15.54 -02 47 54.9 z 118
1997-09-26 19:23:51 C 21 06 15.83 -02 47 53.1 z 046
1997-09-26 19:25:41 C 21 06 16.38 -02 47 50.6 z 046
1997-09-26 19:48:29 C 21 06 24.23 -02 47 19.6 z 587
1997-09-26 19:51:49 C 21 06 25.47 -02 47 13.6 z 587
1997-09-26 19:57:00 C 21 06 27.27 -02 47 07.2 z 587
1997-09-27 18:11:19 C 21 13 57.59 -02 18 21.7 z 104
1997-09-27 18:22:39 C 21 14 01.15 -02 18 06.3 z 104
1997-09-27 18:58:45 C 21 14 12.70 -02 17 22.5 z 587
1997-09-27 19:02:45 C 21 14 14.00 -02 17 16.7 z 587
1997-09-27 19:07:56 C 21 14 15.45 -02 17 12.0 z 046
1997-09-27 19:09:08 C 21 14 15.83 -02 17 11.3 z 046
1997-09-27 19:10:20 C 21 14 16.18 -02 17 08.2 z 046
1997-09-27 19:11:33 C 21 14 16.51 -02 17 06.6 z 046
1997-09-27 19:12:45 C 21 14 17.02 -02 17 04.5 z 046
1997-09-27 19:13:59 C 21 14 17.42 -02 17 05.7 z 046
1997-09-27 19:14:14 C 21 14 17.62 -02 17 02.1 z 587
1997-09-27 19:18:45 C 21 14 19.08 -02 16 56.6 z 587
1997-09-27 19:35:00 C 21 14 23.99 -02 16 37.6 z 118
1997-09-27 19:44:21 C 21 14 26.92 -02 16 26.6 z 118
1997-09-28 11:15:30 C 21 19 28.73 -01 57 00.2 360
1997-09-28 11:21:59 C 21 19 30.73 -01 56 52.4 360
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)