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
2012-01-13 01:31:20 C 04 37 16.14 +38 05 02.8 u H45
2012-01-13 01:32:51 C 04 37 16.22 +38 04 56.9 u H45
2012-01-13 01:34:35 C 04 37 16.31 +38 04 50.2 u H45
2012-01-15 22:53:16 C 04 42 03.72 +34 02 48.1 u 160
2012-01-15 22:56:28 C 04 42 03.88 +34 02 38.1 u 160
2012-01-15 22:59:39 C 04 42 04.04 +34 02 28.2 u 160
2012-01-16 20:33:25 C 04 43 27.17 +32 59 39.5 c 127
2012-01-16 20:37:53 C 04 43 27.39 +32 59 26.8 c 127
2012-01-16 20:41:49 C 04 43 27.56 +32 59 15.7 c 127
2012-01-16 20:50:52 C 04 43 27.98 +32 58 50.6 c 127
2012-01-16 22:04:57 C 04 43 31.25 +32 55 29.8 u 160
2012-01-16 22:08:04 C 04 43 31.34 +32 55 20.6 u 160
2012-01-16 22:11:10 C 04 43 31.42 +32 55 11.2 u 160
2012-01-17 19:21:56 C 04 44 49.95 +31 58 29.4 c 127
2012-01-17 19:30:02 C 04 44 50.32 +31 58 08.3 c 127
2012-01-17 19:34:12 C 04 44 50.52 +31 57 58.1 c 127
2012-01-17 20:55:53 C 04 44 54.03 +31 54 35.1 u 160
2012-01-17 20:59:02 C 04 44 54.16 +31 54 27.3 u 160
2012-01-17 21:02:10 C 04 44 54.29 +31 54 19.1 u 160
2012-01-18 17:10:41 C 04 46 06.24 +31 04 35.8 u C73
2012-01-18 17:14:02 C 04 46 06.39 +31 04 28.1 u C73
2012-01-22 19:19:55 C 04 51 26.15 +27 46 13.7 d B66
2012-01-22 20:04:18 C 04 51 28.06 +27 44 57.7 d B66
2012-01-22 20:46:58 C 04 51 29.80 +27 43 45.0 d B66
2012-01-22 21:24:32 C 04 51 31.41 +27 42 39.8 d B66
2012-01-22 21:56:04 C 04 51 32.70 +27 41 46.0 d B66
2012-01-25 05:01:20 C 04 54 26.49 +26 15 56.7 r 703
2012-01-25 05:13:30 C 04 54 27.00 +26 15 39.3 r 703
2012-01-25 05:29:21 C 04 54 27.64 +26 15 16.6 r 703
2012-01-25 22:23:51 C 04 55 20.36 +25 51 29.2 d B66
2012-01-25 23:08:09 C 04 55 22.31 +25 50 27.9 d B66
2012-01-26 03:26:53 C 04 55 37.57 +25 44 51.5 18.7 c 704
2012-01-26 03:45:04 C 04 55 38.34 +25 44 27.0 18.9 c 704
2012-01-26 04:03:14 C 04 55 39.15 +25 44 02.5 19.3 c 704
2012-01-26 04:21:30 C 04 55 39.85 +25 43 37.9 18.8 c 704
2012-01-26 04:39:45 C 04 55 40.63 +25 43 13.1 18.6 c 704
2012-01-27 03:28:54 C 04 56 52.88 +25 13 43.7 18.6 c 704
2012-01-27 03:32:48 C 04 56 53.03 +25 13 38.0 18.8 c 704
2012-01-27 03:47:17 C 04 56 53.64 +25 13 20.4 18.9 c 704
2012-01-27 03:51:13 C 04 56 53.79 +25 13 14.6 18.6 c 704
2012-01-27 04:05:40 C 04 56 54.38 +25 12 57.3 18.7 c 704
2012-01-27 04:09:36 C 04 56 54.56 +25 12 51.7 18.6 c 704
2012-01-27 04:24:04 C 04 56 55.16 +25 12 34.4 18.8 c 704
2012-01-27 04:27:59 C 04 56 55.22 +25 12 30.8 20.3 c 704
2012-01-27 04:42:35 C 04 56 55.94 +25 12 10.8 18.8 c 704
2012-01-29 03:58:39 C 04 59 25.18 +24 17 04.7 r G96
2012-01-29 04:09:22 C 04 59 25.65 +24 16 53.0 r G96
2012-01-29 04:20:14 C 04 59 26.08 +24 16 41.1 r G96
2012-01-29 04:31:02 C 04 59 26.55 +24 16 29.2 r G96
2012-02-16 21:51:05 C 05 24 46.47 +19 22 26.0 d B66
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)