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
1997-11-07 11:25:44 C 23 49 41.93 +06 41 34.1 z 381
1997-11-07 11:35:17 C 23 49 42.81 +06 41 36.8 z 381
1997-11-07 11:44:46 C 23 49 43.35 +06 41 39.9 z 381
1998-01-31 05:52:27 C 02 09 03.73 +15 59 43.1 568
1998-01-31 06:03:36 C 02 09 04.46 +15 59 46.0 568
1998-01-31 06:14:36 C 02 09 05.20 +15 59 49.1 568
1998-01-31 06:25:33 C 02 09 05.91 +15 59 52.1 568
1998-01-31 06:37:04 C 02 09 06.66 +15 59 55.4 568
1998-01-31 06:48:16 C 02 09 07.40 +15 59 58.8 568
1998-02-01 05:42:56 C 02 10 38.85 +16 06 25.0 568
1998-02-01 05:56:15 C 02 10 39.72 +16 06 28.7 568
1998-02-01 06:07:17 C 02 10 40.42 +16 06 31.4 568
1998-02-01 06:18:56 C 02 10 41.20 +16 06 34.9 568
1998-02-01 06:30:04 C 02 10 41.93 +16 06 38.0 568
2002-12-03 08:49:53 C 05 08 56.090 +26 31 08.70 o 568
2002-12-03 09:09:56 C 05 08 54.858 +26 31 06.73 o 568
2002-12-04 12:04:03 C 05 07 18.787 +26 28 25.94 o 568
2002-12-04 12:15:56 C 05 07 18.068 +26 28 24.64 o 568
2011-04-03 11:18:22 C 13 59 13.269 -17 54 54.18 U T12
2011-04-03 11:21:44 C 13 59 13.140 -17 54 53.98 U T12
2011-04-03 11:25:06 C 13 59 13.004 -17 54 53.79 U T12
2011-04-13 12:13:37 C 13 48 35.685 -17 28 59.25 U T12
2011-04-13 12:15:59 C 13 48 35.562 -17 28 58.89 U T12
2011-04-13 12:18:21 C 13 48 35.442 -17 28 58.52 U T12
2011-04-23 13:13:04 C 13 34 44.845 -16 38 22.71 V T12
2011-04-28 06:06:23 C 13 27 32.19 -16 06 34.7 o 291
2011-04-28 06:12:01 C 13 27 31.83 -16 06 32.0 o 291
2011-04-28 06:17:28 C 13 27 31.46 -16 06 31.1 o 291
2011-08-07 06:20:02 C 13 59 31.331 -14 30 18.51 t 568
2011-08-07 06:24:06 C 13 59 31.812 -14 30 20.11 t 568
2011-08-07 06:28:01 C 13 59 32.272 -14 30 21.49 t 568
2011-08-19 05:52:06 C 14 40 05.345 -16 29 28.40 o 568
2011-08-19 05:54:28 C 14 40 05.719 -16 29 29.28 o 568
2011-08-19 05:56:50 C 14 40 06.091 -16 29 30.28 o 568
2011-08-29 06:42:18 C 15 24 00.336 -18 03 56.09 U T12
2011-08-29 06:45:03 C 15 24 00.888 -18 03 56.99 U T12
2011-10-09 00:52:25 C 20 08 37.85 -13 00 55.6 t H21
2011-10-09 01:05:32 C 20 08 41.64 -13 00 41.0 t H21
2011-10-09 01:18:53 C 20 08 45.52 -13 00 27.0 t H21
2025-04-09 08:50:54 C 14 50 25.570 -22 48 12.70 V 291
2025-04-09 09:06:02 C 14 50 25.300 -22 48 14.40 V 291
2025-04-09 09:21:08 C 14 50 25.030 -22 48 16.40 V 291
2025-05-02 10:22:31 C 14 30 11.916 -23 10 11.05 X F52
2025-05-02 10:38:57 C 14 30 10.889 -23 10 09.89 X F52
2025-05-02 11:11:52 C 14 30 08.843 -23 10 07.45 X F52
2025-05-06 09:43:24 C 14 24 22.904 -23 01 24.56 X F51
2025-05-06 09:59:17 C 14 24 21.833 -23 01 23.16 X F51
2025-05-06 10:31:00 C 14 24 19.651 -23 01 19.00 X F51
2025-05-17 08:05:45 C 14 05 56.290 -22 13 58.00 V 691
2025-05-17 08:10:52 C 14 05 55.950 -22 13 56.10 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)