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
2021-01-05 06:51:33 C 00 03 12.85 +19 55 06.5 V T05
2021-01-05 07:06:05 C 00 03 19.86 +19 55 25.7 V T05
2021-01-06 05:33:37 C 00 14 11.367 +20 24 00.74 U F52
2021-01-06 05:51:13 C 00 14 19.617 +20 24 21.30 U F52
2021-01-06 06:08:54 C 00 14 27.854 +20 24 41.72 U F52
2021-01-09 04:27:20 C 00 46 52.55 +21 33 43.4 V 703
2021-01-09 04:35:34 C 00 46 56.13 +21 33 49.0 V 703
2021-01-09 04:43:47 C 00 46 59.70 +21 33 55.0 V 703
2021-01-09 04:52:01 C 00 47 03.26 +21 34 01.8 V 703
2021-01-10 03:19:04 C 00 56 51.46 +21 50 21.3 V 703
2021-01-10 03:35:38 C 00 56 58.14 +21 50 29.1 V 703
2021-01-10 03:43:55 C 00 57 01.58 +21 50 34.4 V 703
2021-01-10 18:29:48 C 01 03 18.86 +21 59 40.8 V 113
2021-01-10 18:32:42 C 01 03 20.01 +21 59 42.0 V 113
2021-01-10 18:35:36 C 01 03 21.22 +21 59 43.3 V 113
2021-01-11 18:24:44 C 01 13 11.75 +22 12 35.8 V 130
2021-01-11 18:30:52 C 01 13 14.19 +22 12 38.5 V 130
2021-01-11 18:37:01 C 01 13 16.70 +22 12 41.8 V 130
2021-01-13 07:28:40 C 01 27 47.92 +22 27 58.8 V T05
2021-01-13 07:34:36 C 01 27 50.15 +22 28 01.1 V T05
2021-01-13 07:43:12 C 01 27 53.40 +22 28 03.5 V T05
2021-01-13 07:59:04 C 01 27 59.34 +22 28 07.4 V T05
2021-01-17 05:53:55 C 02 01 19.98 +22 46 00.8 V T05
2021-01-17 05:58:33 C 02 01 21.43 +22 46 01.2 V T05
2021-01-17 06:06:29 C 02 01 23.92 +22 46 01.7 V T05
2021-01-17 06:31:59 C 02 01 32.04 +22 46 02.9 V T05
2021-01-18 03:57:59 C 02 08 25.16 +22 46 48.2 V 703
2021-01-18 04:05:32 C 02 08 27.41 +22 46 48.9 V 703
2021-01-18 04:13:06 C 02 08 29.74 +22 46 48.7 V 703
2021-01-18 04:20:39 C 02 08 32.10 +22 46 48.3 V 703
2021-02-01 06:26:42 C 03 30 37.032 +21 56 29.73 U F52
2021-02-01 06:45:12 C 03 30 40.379 +21 56 25.63 U F52
2021-02-01 07:03:44 C 03 30 43.715 +21 56 21.13 U F52
2021-02-01 07:22:23 C 03 30 47.080 +21 56 16.93 U F52
2021-02-11 06:49:34 C 04 10 01.511 +21 05 51.15 U F52
2021-02-11 06:49:34 C 04 10 01.511 +21 05 51.17 U F52
2021-02-11 07:07:14 C 04 10 03.980 +21 05 47.36 U F52
2021-02-11 07:24:51 C 04 10 06.443 +21 05 43.62 U F52
2021-02-11 07:42:29 C 04 10 08.914 +21 05 39.88 U F52
2021-03-18 02:41:00 C 05 47 27.54 +18 51 25.7 V G96
2021-03-18 02:57:05 C 05 47 29.13 +18 51 23.0 V G96
2021-03-18 03:05:07 C 05 47 29.96 +18 51 22.2 V G96
2022-02-27 06:27:55 C 13 49 09.137 -35 48 59.22 V W68
2022-02-27 06:32:58 C 13 49 09.370 -35 49 10.81 V W68
2022-02-27 06:42:31 C 13 49 09.598 -35 49 32.41 V W68
2022-02-27 06:58:13 C 13 49 10.013 -35 50 07.12 V W68
2022-03-26 06:49:18 C 14 24 47.441 -79 34 19.27 V W68
2022-03-26 06:54:31 C 14 24 48.432 -79 34 54.88 V W68
2022-03-26 07:01:47 C 14 24 49.927 -79 35 43.62 V W68
2022-03-26 07:33:15 C 14 24 56.698 -79 39 15.62 V W68
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)