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
2007-01-22 18:47:18 C 00 50 08.92 +13 00 05.2 r J95
2007-01-22 19:17:16 C 00 50 16.92 +13 00 38.6 r J95
2007-02-16 03:07:56 C 03 05 27.56 +19 39 14.9 r G96
2007-02-16 03:14:32 C 03 05 28.82 +19 39 17.9 r G96
2007-02-16 03:21:08 C 03 05 30.08 +19 39 20.6 r G96
2007-02-16 03:27:33 C 03 05 31.34 +19 39 21.2 r G96
2007-03-16 03:57:47 C 04 54 30.99 +21 03 28.1 r G96
2007-03-16 04:05:50 C 04 54 32.11 +21 03 27.9 r G96
2007-03-16 04:13:52 C 04 54 33.22 +21 03 27.9 r G96
2007-03-16 04:21:53 C 04 54 34.34 +21 03 27.5 r G96
2007-11-07 11:52:17 C 11 01 35.30 +13 29 59.2 o 691
2007-11-07 12:10:25 C 11 01 36.09 +13 29 48.0 o 691
2007-11-07 12:28:33 C 11 01 36.95 +13 29 36.3 o 691
2007-11-09 11:40:12 C 11 04 03.61 +12 59 41.1 o 691
2007-11-09 11:58:20 C 11 04 04.48 +12 59 28.7 o 691
2007-11-09 12:21:26 C 11 04 05.70 +12 59 15.0 o 691
2008-01-15 08:20:42 C 12 07 39.58 -05 32 32.1 o H55
2008-01-15 08:25:10 C 12 07 39.47 -05 32 35.6 o H55
2008-01-15 08:29:36 C 12 07 39.46 -05 32 38.2 o H55
2008-01-18 11:06:03 C 12 06 54.38 -06 26 52.6 r 448
2008-01-18 11:38:00 C 12 06 53.69 -06 27 15.5 r 448
2008-01-18 12:05:53 C 12 06 53.12 -06 27 35.7 r 448
2008-01-20 10:58:55 C 12 06 03.09 -07 01 54.5 r G96
2008-01-20 11:07:01 C 12 06 02.88 -07 02 00.3 r G96
2008-01-20 11:15:10 C 12 06 02.66 -07 02 06.0 r G96
2008-01-20 11:23:14 C 12 06 02.44 -07 02 12.0 r G96
2008-02-08 12:07:50 C 11 36 58.62 -12 35 22.1 r 448
2008-02-08 12:17:03 C 11 36 57.51 -12 35 28.2 r 448
2008-02-08 12:26:47 C 11 36 56.29 -12 35 34.3 r 448
2008-02-14 01:06:21 C 11 18 50.29 -14 00 56.2 r 130
2008-02-14 01:18:33 C 11 18 48.26 -14 01 03.0 r 130
2008-02-14 01:23:51 C 11 18 47.42 -14 01 06.0 r 130
2008-02-14 01:28:25 C 11 18 46.67 -14 01 08.7 r 130
2008-03-01 07:40:54 C 09 57 07.88 -15 50 10.7 r 703
2008-03-01 07:52:50 C 09 57 04.96 -15 50 08.7 r 703
2008-03-01 08:04:38 C 09 57 01.94 -15 50 07.0 r 703
2008-03-07 05:22:13 C 09 22 16.57 -15 06 13.2 18.1 c 704
2008-03-07 05:38:01 C 09 22 12.56 -15 06 04.8 18.0 c 704
2008-03-07 05:54:14 C 09 22 08.50 -15 05 57.5 18.1 c 704
2008-03-07 06:10:12 C 09 22 04.46 -15 05 49.6 18.0 c 704
2008-03-07 06:26:01 C 09 22 00.50 -15 05 41.9 18.4 c 704
2008-03-11 04:48:10 C 08 59 53.63 -14 12 49.7 r H51
2008-03-11 04:50:32 C 08 59 53.04 -14 12 49.4 r H51
2008-03-11 04:52:51 C 08 59 52.49 -14 12 47.6 r H51
2008-03-11 04:55:09 C 08 59 52.00 -14 12 46.5 r H51
2008-03-11 04:57:27 C 08 59 51.47 -14 12 44.9 r H51
2008-03-11 04:59:47 C 08 59 50.92 -14 12 43.1 r H51
2008-03-11 05:02:06 C 08 59 50.34 -14 12 41.7 r H51
2008-03-11 05:04:24 C 08 59 49.81 -14 12 40.3 r H51
2008-03-11 05:06:44 C 08 59 49.27 -14 12 38.4 r H51
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)