310842 (2003 AK18)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3842035592 ± 2.00e+00
Semi-major axis (a)0.8769785384 AU ± 3.00e+00
Inclination (i)7.40228421° ± 4.00e+00
Long. of Asc. Node (Ω)301.53854445° ± 5.00e+00
Arg. of Perihelion (ω)23.95386866° ± 6.00e+00
Mean Anomaly (M)64.71175149° ± 8.85e-06
Mean Motion (n)1.2001314814°/day ± 6.16e+00
Perihelion dist (q)0.54004026 AU ± 2.55e+00
Aphelion dist (Q)1.21391681 AU ± 4.51e+00
Orbital Period0.82126525 yr ± 4.21e+00
NGA Modelr2
A2-3.79610414e-06 AU/d²
Physical Parameters
H (abs. magnitude)19.78
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-28
RMS Residual0.315″
Uncertainty0
Orbit TypeAten
MOID0.056304 AU
Observations Used606
Oppositions5
Arc Total2003-2026
First Observation Used2003-01-07
Last Observation Used2026-01-12
Observations (639)
Date Type RA Dec Mag Band Observatory
2012-01-06 09:48:14 C 04 17 15.15 +53 35 44.9 u 379
2012-01-06 09:51:53 C 04 17 15.81 +53 35 15.4 u 379
2012-01-06 10:20:38 C 04 17 21.01 +53 31 23.1 u 379
2012-01-06 10:22:28 C 04 17 21.37 +53 31 08.1 u 379
2012-01-06 10:24:17 C 04 17 21.67 +53 30 53.5 u 379
2012-01-06 10:35:13 C 04 17 23.63 +53 29 24.8 u 379
2012-01-06 10:51:50 C 04 17 26.53 +53 27 09.9 u 379
2012-01-06 10:53:41 C 04 17 26.87 +53 26 55.1 u 379
2012-01-06 21:45:23 C 04 19 35.52 +51 59 44.0 v 204
2012-01-06 21:47:32 C 04 19 35.85 +51 59 27.2 v 204
2012-01-06 21:49:42 C 04 19 36.22 +51 59 10.1 v 204
2012-01-06 21:52:10 C 04 19 36.61 +51 58 50.7 v 204
2012-01-06 21:54:21 C 04 19 36.96 +51 58 33.7 v 204
2012-01-07 09:42:38 C 04 21 54.98 +50 29 17.9 u 379
2012-01-07 10:24:43 C 04 22 00.91 +50 24 14.1 u 379
2012-01-07 10:27:23 C 04 22 01.28 +50 23 55.0 u 379
2012-01-07 10:30:04 C 04 22 01.65 +50 23 35.3 u 379
2012-01-07 11:10:53 C 04 22 07.23 +50 18 40.1 u 379
2012-01-07 11:23:59 C 04 22 08.99 +50 17 05.2 u 379
2012-01-07 11:31:31 C 04 22 09.99 +50 16 10.2 u 379
2012-01-07 11:41:22 C 04 22 11.33 +50 14 58.7 u 379
2012-01-07 11:53:30 C 04 22 12.95 +50 13 30.4 u 379
2012-01-07 12:00:44 C 04 22 13.93 +50 12 37.6 u 379
2012-01-07 12:02:56 C 04 22 14.20 +50 12 22.0 u 379
2012-01-08 00:59:38 C 04 24 13.58 +48 40 02.6 r 203
2012-01-08 01:25:07 C 04 24 17.22 +48 37 03.0 r 203
2012-01-09 21:02:08 C 04 30 05.94 +44 07 32.8 c A24
2012-01-09 21:03:04 C 04 30 06.01 +44 07 27.5 c A24
2012-01-09 21:08:15 C 04 30 06.25 +44 06 58.5 c 560
2012-01-09 21:09:12 C 04 30 06.33 +44 06 53.0 c 560
2012-01-09 21:09:58 C 04 30 06.41 +44 06 48.9 c 560
2012-01-09 21:17:15 C 04 30 07.26 +44 06 07.9 c A24
2012-01-09 21:45:37 C 04 30 09.76 +44 03 28.5 c A24
2012-01-09 21:46:33 C 04 30 09.85 +44 03 23.3 c A24
2012-01-09 22:03:39 C 04 30 11.12 +44 01 48.9 u 160
2012-01-09 22:05:46 C 04 30 11.33 +44 01 37.0 u 160
2012-01-09 22:08:00 C 04 30 11.53 +44 01 24.1 u 160
2012-01-10 19:03:25 C 04 32 28.62 +42 10 18.2 c A24
2012-01-10 19:04:33 C 04 32 28.71 +42 10 12.6 c A24
2012-01-10 19:31:56 C 04 32 30.86 +42 07 55.9 c A24
2012-01-10 20:13:12 C 04 32 34.02 +42 04 28.7 c A24
2012-01-10 20:14:20 C 04 32 34.10 +42 04 23.2 c A24
2012-01-10 23:08:32 C 04 32 47.31 +41 49 45.4 u 160
2012-01-10 23:10:24 C 04 32 47.46 +41 49 35.8 u 160
2012-01-10 23:12:14 C 04 32 47.62 +41 49 26.4 u 160
2012-01-11 21:48:19 C 04 34 54.62 +40 02 36.2 u 160
2012-01-11 21:50:37 C 04 34 54.77 +40 02 25.9 u 160
2012-01-11 21:52:51 C 04 34 54.94 +40 02 15.7 u 160
2012-01-13 01:23:56 C 04 37 15.70 +38 05 32.1 u H45
2012-01-13 01:29:34 C 04 37 16.03 +38 05 09.9 u H45
Radar Observations (4)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2011-12-18 14:55:00 141593.549 0.2 Hz 2380 -1 -1
2011-12-18 15:25:00 87814903.72 0.5 us 2380 -1 -1
2011-12-18 15:25:00 140670.6971 0.2 Hz 2380 -1 -1
2011-12-29 03:40:00 -36324.799 4 Hz 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)