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
2004-12-11 12:51:07 C 11 53 59.75 +20 10 21.9 d 703
2004-12-11 13:06:03 C 11 54 00.67 +20 10 07.3 d 703
2004-12-12 09:56:18 C 11 55 20.83 +19 50 18.8 o 699
2004-12-12 10:16:09 C 11 55 22.11 +19 49 59.8 o 699
2004-12-12 10:35:59 C 11 55 23.30 +19 49 41.7 o 699
2004-12-12 10:55:49 C 11 55 24.52 +19 49 23.5 o 699
2004-12-17 09:59:59 C 12 02 19.88 +17 58 29.8 r H41
2004-12-17 10:04:09 C 12 02 20.18 +17 58 25.9 r H41
2004-12-17 10:06:18 C 12 02 20.26 +17 58 23.9 r H41
2004-12-22 11:48:33 C 12 08 14.71 +16 08 52.3 d 703
2004-12-22 12:02:37 C 12 08 15.35 +16 08 40.0 d 703
2004-12-22 12:16:38 C 12 08 15.84 +16 08 27.6 d 703
2004-12-22 12:30:42 C 12 08 16.42 +16 08 14.9 d 703
2004-12-25 04:11:00 C 12 10 52.96 +15 12 27.9 o 084
2005-01-01 02:11:43 C 12 16 06.22 +12 52 27.9 o 084
2005-01-17 09:11:45 C 12 18 31.46 +07 54 54.0 d 703
2005-01-17 09:24:06 C 12 18 31.28 +07 54 45.3 d 703
2005-01-17 09:36:24 C 12 18 31.08 +07 54 36.6 d 703
2005-01-17 09:48:48 C 12 18 30.91 +07 54 27.9 d 703
2005-01-23 10:54:46 C 12 15 35.44 +06 16 00.2 r H41
2005-01-23 10:57:07 C 12 15 35.35 +06 15 58.8 r H41
2005-01-23 10:59:06 C 12 15 35.34 +06 15 57.5 r H41
2005-01-23 11:00:54 C 12 15 35.28 +06 15 56.9 r H41
2005-02-03 10:15:59 C 12 04 58.16 +03 35 26.6 16.8 c 704
2005-02-03 10:33:40 C 12 04 57.16 +03 35 17.1 17.4 c 704
2005-02-03 10:51:24 C 12 04 56.19 +03 35 06.8 17.2 c 704
2005-02-03 11:10:49 C 12 04 55.09 +03 34 56.1 17.3 c 704
2005-02-03 11:29:23 C 12 04 54.05 +03 34 45.3 17.5 c 704
2005-02-04 02:42:20 C 12 04 05.11 +03 26 12.3 o 084
2005-02-04 02:46:58 C 12 04 04.84 +03 26 09.6 o 084
2005-02-09 21:28:56 C 11 55 45.06 +02 13 08.2 o 084
2005-02-09 21:33:35 C 11 55 44.73 +02 13 05.4 o 084
2005-02-14 09:42:58 C 11 48 16.23 +01 21 51.5 r H41
2005-02-14 09:44:58 C 11 48 16.06 +01 21 50.7 r H41
2005-02-14 09:47:19 C 11 48 15.85 +01 21 49.4 r H41
2005-02-14 09:49:02 C 11 48 15.71 +01 21 48.5 r H41
2005-02-21 21:45:10 C 11 34 36.79 +00 07 54.3 o 084
2005-02-22 23:55:58 C 11 32 33.01 -00 01 36.5 o 084
2005-02-23 00:00:41 C 11 32 32.61 -00 01 38.5 o 084
2005-02-28 00:00:36 C 11 23 03.98 -00 41 21.7 o 084
2005-02-28 00:05:17 C 11 23 03.62 -00 41 23.0 o 084
2005-03-01 14:44:32 C 11 20 02.25 -00 52 45.9 r 379
2005-03-01 14:46:11 C 11 20 02.16 -00 52 46.9 r 379
2005-03-01 21:06:27 C 11 19 32.53 -00 54 38.8 o 084
2005-03-01 21:11:07 C 11 19 32.16 -00 54 39.7 o 084
2005-03-01 23:53:43 C 11 19 19.26 -00 55 26.0 o 084
2005-03-01 23:58:22 C 11 19 18.90 -00 55 27.1 o 084
2005-03-02 21:33:28 C 11 17 38.81 -01 01 28.4 o 084
2005-03-02 21:38:07 C 11 17 38.45 -01 01 29.8 o 084
2005-03-04 06:34:52 C 11 15 06.92 -01 10 14.4 r 703