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
2017-02-01 11:05:22 C 10 41 37.80 -02 54 35.2 V G45
2017-02-01 11:53:11 C 10 41 29.05 -02 54 44.0 V G45
2017-02-01 12:29:42 C 10 41 22.39 -02 54 50.4 V G45
2017-02-02 06:38:56 C 10 38 09.84 -02 58 03.6 V G45
2017-02-02 07:36:51 C 10 37 58.89 -02 58 13.3 V G45
2017-02-02 07:38:49 C 10 37 58.51 -02 58 13.6 V G45
2017-02-02 08:34:47 C 10 37 47.82 -02 58 22.0 V G45
2017-02-02 08:37:39 C 10 37 47.38 -02 58 22.7 V G45
2017-02-02 09:33:26 C 10 37 36.73 -02 58 32.5 V G45
2017-02-02 11:22:47 C 10 37 15.92 -02 58 50.1 V G45
2017-02-02 11:26:10 C 10 37 15.29 -02 58 50.8 V G45
2017-02-02 12:08:56 C 10 37 07.21 -02 58 57.4 V G45
2017-02-02 12:38:54 C 10 37 01.58 -02 59 02.1 V G45
2017-02-02 12:41:56 C 10 37 01.02 -02 59 02.5 V G45
2017-02-04 09:04:00 C 10 28 41.78 -03 05 05.4 q G96
2017-02-04 09:10:09 C 10 28 40.54 -03 05 06.0 q G96
2017-02-04 09:16:17 C 10 28 39.30 -03 05 06.7 q G96
2017-02-04 09:22:26 C 10 28 38.06 -03 05 07.4 q G96
2017-02-13 04:59:51 C 09 43 58.53 -03 01 37.3 u H21
2017-02-13 05:01:46 C 09 43 58.08 -03 01 37.2 u H21
2017-02-13 05:03:43 C 09 43 57.62 -03 01 37.0 u H21
2017-02-13 05:05:40 C 09 43 57.18 -03 01 36.7 u H21
2017-02-13 05:07:37 C 09 43 56.74 -03 01 36.3 u H21
2017-02-13 05:09:34 C 09 43 56.28 -03 01 36.0 u H21
2017-02-13 05:11:31 C 09 43 55.83 -03 01 35.6 u H21
2017-02-13 05:13:23 C 09 43 55.41 -03 01 35.4 u H21
2017-02-14 23:08:06 C 09 34 34.79 -02 54 25.7 q 160
2017-02-14 23:10:26 C 09 34 34.24 -02 54 25.1 q 160
2017-02-14 23:12:46 C 09 34 33.69 -02 54 24.9 q 160
2017-02-15 12:41:55 C 09 31 34.07 -02 50 54.8 q Q60
2017-02-15 12:59:42 C 09 31 29.99 -02 50 51.4 q Q60
2017-02-15 13:08:57 C 09 31 27.85 -02 50 49.3 q Q60
2017-02-15 23:06:14 C 09 29 14.53 -02 49 24.4 q 160
2017-02-15 23:08:41 C 09 29 13.98 -02 49 23.9 q 160
2017-02-15 23:11:07 C 09 29 13.42 -02 49 23.2 q 160
2017-02-16 11:25:59 C 09 26 29.50 -02 46 22.3 L T05
2017-02-16 11:50:53 C 09 26 23.76 -02 46 16.0 L T05
2017-02-16 12:15:52 C 09 26 17.99 -02 46 10.4 L T05
2017-02-16 12:39:35 C 09 26 12.53 -02 46 04.7 L T05
2017-02-18 06:29:44 C 09 17 02.88 -02 35 13.8 L T08
2017-02-18 06:43:27 C 09 16 59.69 -02 35 10.5 L T08
2017-02-18 06:52:31 C 09 16 57.70 -02 35 08.7 L T05
2017-02-18 06:57:29 C 09 16 56.57 -02 35 06.7 L T08
2017-02-18 07:06:27 C 09 16 54.60 -02 35 05.3 L T05
2017-02-18 07:11:51 C 09 16 53.34 -02 35 02.1 L T08
2017-02-18 07:20:51 C 09 16 51.32 -02 35 01.3 L T05
2017-02-18 07:35:43 C 09 16 47.94 -02 34 56.9 L T05
2017-02-18 07:50:13 C 09 16 44.66 -02 34 52.8 L T05
2017-02-18 22:01:00 C 09 13 38.14 -02 30 14.5 o K95
2017-02-18 22:18:59 C 09 13 34.12 -02 30 09.8 o K95
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)