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
2003-01-28 22:04:29 C 06 54 14.45 +20 57 55.2 c 176
2003-01-28 22:09:45 C 06 54 13.54 +20 57 50.7 c 176
2003-01-28 22:15:56 C 06 54 12.47 +20 57 45.4 c 176
2003-01-28 22:38:36 C 06 54 08.56 +20 57 26.0 c 176
2003-01-29 01:36:08 C 06 53 41.64 +20 54 41.6 i 726
2003-01-29 01:41:08 C 06 53 40.78 +20 54 39.4 i 726
2003-01-29 01:51:09 C 06 53 39.12 +20 54 31.6 i 726
2003-01-29 01:57:42 C 06 53 38.06 +20 54 25.3 i 726
2003-01-29 05:57:33 C 06 52 58.51 +20 51 09.1 c 670
2003-01-29 06:02:02 C 06 52 57.73 +20 51 05.2 c 670
2003-02-01 19:39:25 C 06 41 08.04 +19 42 18.2 c 215
2003-02-01 20:17:38 C 06 41 02.59 +19 41 45.9 c 084
2003-02-01 21:13:16 C 06 40 56.11 +19 41 13.6 c 552
2003-02-01 21:19:26 C 06 40 55.31 +19 41 06.4 c 552
2003-02-01 21:27:04 C 06 40 54.37 +19 41 03.2 c 552
2003-02-01 21:31:20 C 06 40 53.82 +19 41 00.2 c 552
2003-02-01 21:38:59 C 06 40 52.85 +19 40 54.6 c 552
2003-02-01 21:52:24 C 06 40 51.19 +19 40 44.4 c 552
2003-02-02 19:52:34 C 06 38 22.18 +19 24 52.3 c 552
2003-02-02 19:57:35 C 06 38 21.61 +19 24 48.3 c 552
2003-02-02 20:19:56 C 06 38 18.98 +19 24 33.2 c 552
2003-02-02 20:25:33 C 06 38 18.34 +19 24 30.2 c 552
2003-02-02 20:36:36 C 06 38 17.01 +19 24 21.4 c 552
2003-02-02 22:54:07 C 06 38 01.32 +19 22 46.6 d 170
2003-02-02 22:56:59 C 06 38 00.89 +19 22 44.7 d 170
2003-02-02 23:05:36 C 06 37 59.87 +19 22 37.7 d 170
2003-02-04 19:26:26 C 06 33 35.97 +18 52 40.8 c 084
2003-02-08 19:32:08 C 06 26 20.05 +17 56 55.9 941
2003-02-08 19:37:28 C 06 26 19.76 +17 56 52.9 941
2003-02-08 19:42:46 C 06 26 19.31 +17 56 49.8 941
2003-02-08 19:48:02 C 06 26 19.01 +17 56 46.8 941
2003-02-15 19:28:34 C 06 19 27.97 +16 42 38.4 c 084
2003-02-20 18:50:30 C 06 17 56.77 +16 03 53.9 c 113
2003-02-20 18:55:07 C 06 17 56.70 +16 03 52.5 c 113
2003-02-20 18:59:43 C 06 17 56.66 +16 03 51.0 c 113
2003-02-21 05:02:04 C 06 17 54.55 +16 01 06.4 c 670
2003-02-22 18:16:51 C 06 17 56.29 +15 50 56.2 c 246
2003-02-22 18:19:34 C 06 17 56.28 +15 50 55.5 c 246
2003-02-22 18:20:45 C 06 17 56.28 +15 50 55.0 c 246
2003-02-22 18:22:08 C 06 17 56.29 +15 50 54.7 c 246
2003-02-22 18:23:23 C 06 17 56.30 +15 50 54.0 c 246
2003-02-22 18:27:27 C 06 17 56.29 +15 50 53.2 c 246
2003-02-22 18:28:50 C 06 17 56.29 +15 50 52.5 c 246
2003-04-26 03:48:09 C 07 35 38.87 +11 57 36.9 c 696
2003-04-26 03:59:05 C 07 35 39.52 +11 57 34.2 c 696
2007-01-21 19:00:26 C 00 43 40.00 +12 32 44.9 r J95
2007-01-21 19:13:08 C 00 43 43.37 +12 32 59.5 r J95
2007-01-21 19:37:50 C 00 43 50.04 +12 33 27.9 r J95
2007-01-21 19:55:05 C 00 43 54.77 +12 33 46.7 r J95
2007-01-22 18:19:08 C 00 50 01.30 +12 59 32.8 r J95
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)