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
2025-10-22 15:52:50 C 00 59 38.486 +16 32 44.38 V P07
2025-10-22 16:51:32 C 00 59 37.882 +16 32 18.64 V P07
2025-10-22 17:19:13 C 00 59 37.550 +16 32 07.30 V P07
2025-10-22 17:45:18 C 00 59 37.310 +16 31 55.88 V P07
2025-10-23 14:14:43 C 00 59 32.60 +16 23 18.7 V D29
2025-10-23 14:35:05 C 00 59 32.40 +16 23 10.7 V D29
2025-10-23 14:55:27 C 00 59 32.22 +16 23 02.5 V D29
2025-10-26 14:50:13 C 00 59 22.33 +15 55 40.1 V D29
2025-10-26 15:10:35 C 00 59 22.20 +15 55 32.6 V D29
2025-10-26 15:29:47 C 00 59 22.198 +15 55 43.03 V P07
2025-10-26 16:28:30 C 00 59 21.886 +15 55 21.04 V P07
2025-10-26 17:40:52 C 00 59 21.593 +15 54 53.10 V P07
2025-10-26 18:02:24 C 00 59 21.490 +15 54 45.07 V P07
2025-10-27 04:48:31 C 00 59 22.596 +15 50 40.60 V G96
2025-10-27 04:56:01 C 00 59 22.564 +15 50 37.90 V G96
2025-10-27 05:03:30 C 00 59 22.535 +15 50 35.27 V G96
2025-10-27 05:11:00 C 00 59 22.492 +15 50 32.75 V G96
2025-10-28 13:02:54 C 00 59 24.72 +15 39 33.7 V D29
2025-10-28 13:23:16 C 00 59 24.67 +15 39 27.0 V D29
2025-10-28 13:43:38 C 00 59 24.63 +15 39 20.6 V D29
2025-11-10 05:47:40 C 01 02 11.46 +14 21 21.2 V 691
2025-11-10 05:56:32 C 01 02 11.59 +14 21 19.7 V 691
2025-11-10 06:05:24 C 01 02 11.71 +14 21 17.7 V 691
2025-11-13 03:26:38 C 01 03 24.74 +14 09 45.9 V 691
2025-11-13 03:37:06 C 01 03 24.89 +14 09 44.5 V 691
2025-11-13 03:47:34 C 01 03 25.06 +14 09 43.3 V 691
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)