18172 (2000 QL7)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5110299298 ± 6.25e-09
Semi-major axis (a)2.4257654377 AU ± 9.50e-10
Inclination (i)17.82779980° ± 1.30e-06
Long. of Asc. Node (Ω)338.42358622° ± 3.04e-06
Arg. of Perihelion (ω)100.76252583° ± 4.20e-06
Mean Anomaly (M)206.68326087° ± 8.97e-07
Mean Motion (n)0.2608789695°/day ± 1.53e-10
Perihelion dist (q)1.18612670 AU ± 1.52e-08
Aphelion dist (Q)3.66540418 AU ± 1.52e-08
Orbital Period3.77809789 yr ± 2.22e-09
Physical Parameters
H (abs. magnitude)15.69
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.341″
Uncertainty0
Orbit TypeAmor
MOID0.365243 AU
Observations Used4239
Gaia Obs Used36
Oppositions29
Arc Total1977-2024
First Observation Used1977-07-21
Last Observation Used2024-05-09
Observations (6767)
Date Type RA Dec Mag Band Observatory
1977-07-21 15:22:37 21 58 31.28 -26 17 33.8 260
1977-07-21 16:42:37 21 58 28.00 -26 17 43.7 260
1986-02-07 10:07:59 A 11 04 39.7 +18 43 13 18.0 675
1986-02-07 10:08:14 A 11 04 40.11 +18 43 14.4 17.5 675
1986-02-07 10:54:45 A 11 04 35.76 +18 42 36.4 675
1986-02-07 11:23:00 A 11 04 32.9 +18 42 20 675
1986-02-10 10:15:29 A 10 58 03.52 +17 48 49.4 17.0 675
1986-02-10 11:06:00 A 10 57 58.79 +17 48 12.9 675
1996-10-16 05:33:25 C 20 43 46.94 -19 16 23.2 c 566
1996-10-16 05:45:35 C 20 43 47.06 -19 16 18.4 c 566
1996-10-16 05:57:46 C 20 43 47.14 -19 16 13.2 c 566
2000-08-03 08:52:37 C 00 00 57.79 -00 40 23.6 18.3 c 704
2000-08-03 09:13:01 C 00 00 57.73 -00 40 16.2 18.2 c 704
2000-08-03 09:33:19 C 00 00 57.61 -00 40 07.5 18.6 c 704
2000-08-03 09:53:41 C 00 00 57.55 -00 39 57.5 18.0 c 704
2000-08-03 10:14:00 C 00 00 57.52 -00 39 47.5 18.9 c 704
2000-08-25 07:49:57 C 23 50 32.54 +03 20 07.9 17.0 c 704
2000-08-25 08:08:51 C 23 50 31.71 +03 20 17.2 17.5 c 704
2000-08-25 08:27:13 C 23 50 30.97 +03 20 26.0 17.8 c 704
2000-08-26 08:01:23 C 23 49 33.29 +03 31 46.9 17.4 c 704
2000-08-26 08:20:36 C 23 49 32.42 +03 31 56.3 17.5 c 704
2000-08-26 08:39:51 C 23 49 31.58 +03 32 05.4 17.4 c 704
2000-08-26 08:59:05 C 23 49 30.73 +03 32 15.1 17.8 c 704
2000-08-26 09:18:21 C 23 49 29.85 +03 32 24.4 17.9 c 704
2000-08-31 07:24:55 C 23 43 58.89 +04 29 56.3 18.0 c 704
2000-08-31 07:43:54 C 23 43 57.86 +04 30 06.0 17.7 c 704
2000-08-31 08:02:54 C 23 43 56.85 +04 30 15.6 17.9 c 704
2000-08-31 08:21:48 C 23 43 55.83 +04 30 24.6 17.8 c 704
2000-08-31 08:40:44 C 23 43 54.81 +04 30 33.6 17.9 c 704
2000-09-03 06:23:23 C 23 40 07.53 +05 04 58.5 17.4 c 704
2000-09-03 06:42:46 C 23 40 06.36 +05 05 08.1 17.6 c 704
2000-09-03 07:01:49 C 23 40 05.23 +05 05 17.5 17.8 c 704
2000-09-03 07:21:16 C 23 40 04.09 +05 05 26.9 17.8 c 704
2000-09-04 05:36:48 C 23 38 46.77 +05 16 29.7 16.9 c 704
2000-09-04 05:56:16 C 23 38 45.63 +05 16 38.8 18.9 c 704
2000-09-04 06:15:41 C 23 38 44.41 +05 16 49.0 16.9 c 704
2000-09-04 06:35:13 C 23 38 43.21 +05 16 58.8 17.1 c 704
2000-09-04 06:54:40 C 23 38 42.01 +05 17 08.4 17.3 c 704
2000-09-04 07:52:57 C 23 38 38.53 +05 17 37.1 c 670
2000-09-04 11:08:53 C 23 38 26.47 +05 19 14.8 c 670
2000-09-04 12:54:46 C 23 38 20.94 +05 20 06.6 z 348
2000-09-04 13:04:08 C 23 38 20.36 +05 20 11.5 z 348
2000-09-04 13:14:06 C 23 38 19.76 +05 20 16.3 z 348
2000-09-04 14:05:30 C 23 38 16.55 +05 20 40.2 z 903
2000-09-04 14:12:34 C 23 38 16.15 +05 20 47.2 z 903
2000-09-04 14:20:49 C 23 38 15.67 +05 20 49.2 z 903
2000-09-04 20:51:25 C 23 37 52.38 +05 24 01.7 118
2000-09-04 20:53:59 C 23 37 52.21 +05 24 03.2 118
2000-09-04 20:59:45 C 23 37 51.86 +05 24 06.4 118
2000-09-04 21:12:04 C 23 37 51.17 +05 24 12.0 587