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
2005-05-13 04:58:21 C 10 40 56.58 -05 08 03.0 r 703
2009-01-20 11:58:30 C 13 38 08.11 -18 25 46.5 19.5 c 704
2009-01-20 12:17:25 C 13 38 08.58 -18 25 56.4 19.8 c 704
2009-01-20 12:36:44 C 13 38 08.97 -18 26 08.8 19.3 c 704
2009-02-28 16:12:01 C 13 34 48.72 -25 39 49.0 r E12
2009-02-28 16:22:59 C 13 34 48.32 -25 39 53.5 r E12
2009-02-28 16:33:50 C 13 34 47.96 -25 39 55.6 r E12
2009-02-28 16:44:49 C 13 34 47.56 -25 39 59.5 r E12
2009-03-29 16:07:35 C 12 59 06.21 -27 08 10.6 r E12
2009-03-29 16:25:34 C 12 59 05.06 -27 08 09.3 r E12
2009-03-29 16:43:40 C 12 59 03.98 -27 08 08.1 r E12
2009-03-29 17:01:52 C 12 59 02.86 -27 08 07.2 r E12
2009-03-31 07:17:08 C 12 56 43.52 -27 05 14.3 19.0 c 704
2009-03-31 07:53:03 C 12 56 41.28 -27 05 10.2 19.2 c 704
2009-03-31 08:11:17 C 12 56 40.18 -27 05 09.6 18.9 c 704
2009-03-31 08:29:46 C 12 56 38.97 -27 05 06.6 19.4 c 704
2009-04-27 12:49:01 C 12 22 54.73 -24 48 04.1 r E12
2009-04-27 13:04:09 C 12 22 54.15 -24 47 58.4 r E12
2009-04-27 13:19:23 C 12 22 53.54 -24 47 54.6 r E12
2009-04-27 13:34:29 C 12 22 53.04 -24 47 49.9 r E12
2011-07-20 07:15:57 C 21 11 45.02 -32 15 44.1 o 807
2011-07-20 07:19:56 C 21 11 44.85 -32 15 44.1 o 807
2011-07-28 13:32:15 C 21 01 09.84 -32 38 20.4 r E12
2011-07-28 13:50:50 C 21 01 08.76 -32 38 22.5 r E12
2011-07-28 14:10:08 C 21 01 07.68 -32 38 24.1 r E12
2011-07-28 14:29:29 C 21 01 06.49 -32 38 25.0 r E12
2013-01-24 08:38:43 C 14 33 24.84 -28 11 32.9 u 807
2013-01-24 08:44:45 C 14 33 25.03 -28 11 35.8 u 807
2013-01-24 08:50:49 C 14 33 25.21 -28 11 38.5 u 807
2013-01-24 08:56:53 C 14 33 25.40 -28 11 41.3 u 807
2013-01-24 09:02:56 C 14 33 25.60 -28 11 44.0 u 807
2013-03-09 06:24:59 C 14 42 57.95 -35 02 14.7 L W91
2013-03-09 06:28:02 C 14 42 57.89 -35 02 15.5 L W91
2015-06-17 13:41:35 C 22 47 02.008 -17 59 37.83 L F51
2015-06-17 13:56:58 C 22 47 02.280 -17 59 35.92 L F51
2015-06-17 14:12:28 C 22 47 02.553 -17 59 33.80 L F51
2015-06-17 14:27:53 C 22 47 02.828 -17 59 31.89 L F51
2015-07-19 09:48:11 C 22 48 28.83 -17 02 50.4 R G45
2015-07-19 09:56:18 C 22 48 28.68 -17 02 50.3 R G45
2015-07-19 10:03:52 C 22 48 28.51 -17 02 50.1 R G45
2015-07-19 10:10:57 C 22 48 28.40 -17 02 50.0 R G45
2015-07-24 11:37:05 C 22 45 49.224 -17 01 35.74 L F51
2015-07-24 11:54:35 C 22 45 48.752 -17 01 35.71 L F51
2015-07-24 12:11:49 C 22 45 48.285 -17 01 35.71 L F51
2015-07-24 12:29:00 C 22 45 47.817 -17 01 35.67 L F51
2015-08-06 08:07:54 C 22 34 56.52 -17 03 55.4 R G45
2015-08-06 08:15:31 C 22 34 56.13 -17 03 56.1 R G45
2015-08-06 08:23:05 C 22 34 55.77 -17 03 56.0 R G45
2015-08-06 08:30:57 C 22 34 55.41 -17 03 56.3 R G45
2015-08-06 08:31:03 C 22 34 55.43 -17 03 55.8 R G45