162181 (1999 LF6)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2805915348 ± 2.00e+00
Semi-major axis (a)1.4095997620 AU ± 3.00e+00
Inclination (i)18.94327964° ± 4.00e+00
Long. of Asc. Node (Ω)208.49351782° ± 5.00e+00
Arg. of Perihelion (ω)140.87505613° ± 6.00e+00
Mean Anomaly (M)237.23721707° ± 1.11e-05
Mean Motion (n)0.5889366064°/day ± 1.88e+00
Perihelion dist (q)1.01407800 AU ± 3.55e+00
Aphelion dist (Q)1.80512152 AU ± 4.77e+00
Orbital Period1.67356940 yr ± 5.34e+00
NGA Modelr2
A2-1.83588269e-06 AU/d²
Physical Parameters
H (abs. magnitude)18.20
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-27
RMS Residual0.108″
Uncertainty0
Orbit TypeApollo
MOID0.062703 AU
Observations Used1775
Gaia Obs Used33
Oppositions15
Arc Total1979-2017
First Observation Used1979-12-20
Last Observation Used2025-01-11
Observations (1908)
Date Type RA Dec Mag Band Observatory
1999-11-14 07:57:51 C 03 59 05.65 -25 19 58.3 c 699
1999-11-14 08:34:34 C 03 59 04.16 -25 20 42.6 c 699
1999-11-14 09:11:18 C 03 59 02.69 -25 21 25.6 c 699
1999-11-30 05:08:23 C 03 50 22.18 -28 29 56.8 17.7 a 704
1999-11-30 05:29:10 C 03 50 21.66 -28 29 54.8 18.1 a 704
1999-11-30 05:49:56 C 03 50 21.21 -28 29 56.0 17.9 a 704
1999-11-30 06:31:30 C 03 50 20.10 -28 29 54.4 18.1 a 704
1999-12-03 13:35:48 C 03 49 21.31 -28 22 10.4 z 428
1999-12-03 14:07:59 C 03 49 20.75 -28 22 05.3 z 428
1999-12-07 14:10:14 C 03 48 37.48 -27 59 28.6 360
1999-12-07 14:13:44 C 03 48 37.46 -27 59 27.6 360
1999-12-07 14:17:45 C 03 48 37.41 -27 59 26.3 360
2002-02-11 08:51:18 C 11 11 35.73 -25 31 19.5 o 644
2002-02-11 09:21:25 C 11 11 34.23 -25 31 15.8 o 644
2002-02-11 09:51:41 C 11 11 32.70 -25 31 12.2 o 644
2004-05-15 23:35:55 C 17 31 21.40 +10 39 03.9 r 132
2004-05-15 23:48:00 C 17 31 21.12 +10 39 28.7 r 132
2004-05-16 00:00:05 C 17 31 21.05 +10 39 54.1 r 132
2004-05-17 00:59:04 C 17 31 03.95 +11 31 35.4 j 012
2004-05-17 01:03:36 C 17 31 03.86 +11 31 44.4 j 012
2004-05-17 01:06:02 C 17 31 03.83 +11 31 49.8 j 012
2004-05-17 01:15:57 C 17 31 03.68 +11 32 10.2 j 012
2004-05-17 01:18:28 C 17 31 03.63 +11 32 15.6 j 012
2004-05-17 23:42:03 C 17 30 46.09 +12 18 55.7 r 240
2004-05-17 23:46:20 C 17 30 46.03 +12 19 04.5 r 240
2004-05-17 23:50:36 C 17 30 45.97 +12 19 13.3 r 240
2004-05-17 23:54:47 C 17 30 45.89 +12 19 22.1 r 240
2004-05-17 23:58:57 C 17 30 45.79 +12 19 30.9 r 240
2004-05-18 00:04:11 C 17 30 45.72 +12 19 42.0 r 240
2004-05-20 08:25:40 C 17 29 49.56 +14 18 16.4 c G70
2004-05-20 08:55:47 C 17 29 48.95 +14 19 18.2 c G70
2004-05-20 09:15:46 C 17 29 48.39 +14 20 02.1 c G70
2004-05-21 08:26:09 C 17 29 20.82 +15 09 04.4 c G70
2004-05-21 08:55:49 C 17 29 20.11 +15 10 07.1 c G70
2004-05-22 07:56:39 C 17 28 49.53 +15 58 55.1 r H41
2004-05-22 07:59:00 C 17 28 49.43 +15 59 00.8 r H41
2004-05-22 08:01:27 C 17 28 49.38 +15 59 04.5 r H41
2004-05-22 08:05:11 C 17 28 49.26 +15 59 12.0 r H41
2004-05-22 08:07:36 C 17 28 49.15 +15 59 18.2 r H41
2004-05-22 08:14:02 C 17 28 49.08 +15 59 32.1 r H41
2004-05-22 23:27:05 C 17 28 28.04 +16 31 46.6 r A16
2004-05-22 23:30:12 C 17 28 27.96 +16 31 53.5 r A16
2004-05-22 23:31:19 C 17 28 27.94 +16 31 56.2 r A16
2004-05-22 23:35:29 C 17 28 27.72 +16 32 06.0 r A16
2004-05-22 23:43:48 C 17 28 27.77 +16 32 22.2 r A16
2004-05-23 22:22:48 C 17 27 53.74 +17 20 28.6 r A16
2004-05-23 22:26:01 C 17 27 53.66 +17 20 35.1 r A16
2004-05-23 22:26:53 C 17 27 53.66 +17 20 37.5 r A16
2004-05-23 22:30:59 C 17 27 53.52 +17 20 45.6 r A16
2004-05-23 23:04:11 C 17 27 52.45 +17 21 55.5 r 198
Radar Observations (2)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2004-10-18 01:08:00 70782890.01 2 us 2380 -1 -1
2004-10-21 03:11:00 73032657.4 1.5 us 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)