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
2025-10-04 12:51:33 C 01 06 13.325 +20 22 15.78 V T08
2025-10-13 11:28:19 C 01 01 58.243 +18 16 32.92 V T05
2025-10-13 11:44:50 C 01 01 57.802 +18 16 24.53 V T05
2025-10-13 11:49:24 C 01 01 57.730 +18 16 22.19 V T05
2025-10-13 12:14:55 C 01 01 57.132 +18 16 08.11 V T05
2025-10-15 10:18:11 C 01 01 17.597 +17 52 18.52 V T05
2025-10-15 10:28:17 C 01 01 17.345 +17 52 13.04 V T05
2025-10-15 10:33:09 C 01 01 17.256 +17 52 10.85 V T05
2025-10-15 11:19:50 C 01 01 16.325 +17 51 46.44 V T05
2025-10-15 14:26:42 C 01 01 14.885 +17 50 30.08 V P07
2025-10-15 15:25:15 C 01 01 13.757 +17 49 59.99 V P07
2025-10-15 17:46:48 C 01 01 10.922 +17 48 48.49 V P07
2025-10-15 18:56:50 C 01 01 09.581 +17 48 11.70 V P07
2025-10-15 19:16:50 C 01 01 09.242 +17 48 01.08 V P07
2025-10-15 19:50:31 B 01 01 10.817 +17 47 17.56 Z K74
2025-10-15 19:55:34 B 01 01 10.742 +17 47 15.11 Z K74
2025-10-15 20:00:36 B 01 01 10.649 +17 47 12.41 Z K74
2025-10-15 20:05:39 B 01 01 10.555 +17 47 10.07 Z K74
2025-10-15 20:10:42 B 01 01 10.471 +17 47 07.33 Z K74
2025-10-15 20:15:45 B 01 01 10.380 +17 47 05.17 Z K74
2025-10-15 22:57:23 B 01 01 06.97 +17 45 46.0 X L76
2025-10-15 23:06:02 B 01 01 06.83 +17 45 41.0 X L76
2025-10-15 23:14:08 B 01 01 06.70 +17 45 37.0 X L76
2025-10-15 23:21:42 B 01 01 06.57 +17 45 33.1 X L76
2025-10-16 07:16:17 C 01 01 02.174 +17 41 47.51 X F52
2025-10-16 07:35:42 C 01 01 01.826 +17 41 38.17 X F52
2025-10-16 08:25:14 C 01 01 00.895 +17 41 14.34 X F52
2025-10-16 09:51:19 C 01 00 59.210 +17 40 32.81 V T08
2025-10-16 09:55:47 C 01 00 59.117 +17 40 30.86 V T08
2025-10-16 10:09:27 C 01 00 58.874 +17 40 23.41 V T08
2025-10-16 10:23:12 C 01 00 58.562 +17 40 16.90 V T08
2025-10-16 22:15:11 B 01 00 49.73 +17 34 16.7 X L76
2025-10-16 22:26:32 B 01 00 49.54 +17 34 11.0 X L76
2025-10-16 22:37:21 B 01 00 49.35 +17 34 05.9 X L76
2025-10-17 21:10:45 B 01 00 34.925 +17 23 16.37 X K19
2025-10-17 21:16:05 B 01 00 34.855 +17 23 13.52 X K19
2025-10-17 21:21:34 B 01 00 34.754 +17 23 11.22 X K19
2025-10-18 07:03:39 C 01 00 27.976 +17 18 41.04 V G96
2025-10-18 07:11:42 C 01 00 27.839 +17 18 37.19 V G96
2025-10-18 07:19:46 C 01 00 27.713 +17 18 33.41 V G96
2025-10-18 07:27:49 C 01 00 27.590 +17 18 29.66 V G96
2025-10-19 16:48:04 B 01 00 09.040 +17 03 08.12 X N56
2025-10-19 16:58:33 B 01 00 08.838 +17 03 02.71 X N56
2025-10-19 17:09:01 B 01 00 08.727 +17 02 58.47 X N56
2025-10-21 13:40:17 C 00 59 48.44 +16 43 24.9 V D29
2025-10-21 14:00:39 C 00 59 48.23 +16 43 16.2 V D29
2025-10-21 14:21:01 C 00 59 47.97 +16 43 07.8 V D29
2025-10-22 14:05:39 C 00 59 39.55 +16 33 08.6 V D29
2025-10-22 14:26:01 C 00 59 39.33 +16 33 00.4 V D29
2025-10-22 14:46:23 C 00 59 39.13 +16 32 52.2 V D29
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)