Asteroids

326290 Akhenaten help

Last update: 2025-09-10 00:30 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.492

Aphelion (Q)

1.266

Eccentricity (e)

0.440

Inclination (i)

3.4

deg

Orbit period (P)

301.0

Earth MOID

0.00351

U parameter

0.1

A₂

-30.3

10^-15au/days²

Next Earth close approach

Date

2026-05-10

Nominal distance (from Earth center)

0.07355

11003024

Maximum Brightness

18.3

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

21.7

mag

Diameter

100

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

1998-04-21

Observatory

Goodricke-Pigott Observatory, Tucson

ORBIT VISUALISATION TOOLS

External links

Proper elements

Epoch

Near present day

Near middle of observation arc

Orbit properties

Epoch
Semimajor Axis
Eccentricity (e)
Inclination (i)
Long. of Ascending Node (Ω)
Arg. of Perihelion (ω)
Mean Anomaly (M)
Perihelion distance
Aphelion distance
Asc. Node-Earth Sep.
Desc. Node-Earth Sep.
MOID
Orbit Period
U parameter

Value

1-sigma variation

Unit

Epoch

Value

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.879067

1-sigma variation

2.546E-9

Unit

Eccentricity (e)

Value

0.440138

1-sigma variation

4.004E-8

Unit

Inclination (i)

Value

3.3780

1-sigma variation

2.891E-6

Unit

Long. of Ascending Node (Ω)

Value

53.4006

1-sigma variation

2.284E-5

Unit

Arg. of Perihelion (ω)

Value

309.3926

1-sigma variation

2.289E-5

Unit

Mean Anomaly (M)

Value

63.58152

1-sigma variation

0.00002

Unit

Perihelion distance

Value

0.492156

1-sigma variation

Unit

Aphelion distance

Value

1.265978

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.435199

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.028410

1-sigma variation

Unit

MOID

Value

0.003509

1-sigma variation

Unit

Orbit Period

Value

301.0449

1-sigma variation

Unit

U parameter

Value

0.1

1-sigma variation

Unit

A₂

Value

-30.25878

1-sigma variation

2.84912

Unit

10^-15au/days²

Covariance Matrix

	a	e	i	Ω	ω	M	A₂
a	6.48212E-18	6.75778E-17	7.21314E-17	6.82250E-15	-5.78808E-15	-3.55486E-14	7.15150E-9
e	6.75778E-17	1.60356E-15	2.09262E-14	-8.36808E-14	5.87651E-14	-2.02150E-13	6.71742E-8
i	7.21314E-17	2.09262E-14	8.35849E-12	-3.61973E-11	3.60055E-11	-3.07349E-12	-7.85071E-7
Ω	6.82250E-15	-8.36808E-14	-3.61973E-11	5.21445E-10	-5.17289E-10	-1.37945E-11	1.51246E-5
ω	-5.78808E-15	5.87651E-14	3.60055E-11	-5.17289E-10	5.23737E-10	-1.19347E-11	-1.40807E-5
M	-3.55486E-14	-2.02150E-13	-3.07349E-12	-1.37945E-11	-1.19347E-11	2.53681E-10	-3.89940E-5
A₂	7.15150E-9	6.71742E-8	-7.85071E-7	1.51246E-5	-1.40807E-5	-3.89940E-5	8.11746E0

Date of computation: 2025-09-10 00:30 UTC

Note: The ASCII file is in a format suitable for Orbfit input.

Download ASCII file:

Physical properties

Rotation Period
Quality
Amplitude
Rotation Direction
Spinvector L
Spinvector B

Rotational properties

Value

Unit

Source

Rotation Period

Value

Unit

Source

[-]

Quality

Value

Unit

Source

[-]

Amplitude

Value

Unit

mag

Source

[-]

Rotation Direction

Value

Unit

Source

[-]

Spinvector L

Value

Unit

Source

[-]

Spinvector B

Value

Unit

Source

[-]

Taxonomy
Taxonomy (all)

Taxonomy

Value

Unit

Source

Taxonomy

Value

Unit

Source

[-]

Taxonomy (all)

Value

Unit

Source

[-]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

21.706

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

medium high

Unit

Source

[2]

Diameter

Value

100

Unit

Source

[2]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

Unit

mag

Source

[-]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Radar R

Visual S

Unit

Source

[3]

[4]

Download this part as:

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	EARN	1.) Binzel, R.P. et al. (2002) in "Asteroids III" (Eds. W.F.Bottke et al.), Univ.Ariz.Press, Tucson, USA, pp. 255-271. (Physical Properties of NEOs)
[3]	EARN	1.) href="http://echo.jpl.nasa.gov/asteroids/index.html">JPL's NEO Radar Detection Program Webpage
[4]	EARN	1.) Fevig. R.A. and U. Fink (2007) Icarus 188, 175-188. (Spectral observations of 19 weathered and 23 fresh NEAs and their correlations with orbital parameters)(433,1036, 1627,1685,1862,1866,1943,1980,3103,3122,3199,3671,4183,4341, 4954,5587,5751,5836,6037,7358,7482,7753,7822,7977,8201, 10563,11066,13651,13651,19356,20236,20255,35107,85490, J97GD32,J97UH9,J97US9,J98HE3,J98HT31,J98ME3,J98MS2,K04LC2)

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

11624

Unit

Source

[1]

Unobserved

Value

272

Unit

Source

[1]

Normalized RMS of residuals

Value

0.583874

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

1993-04-13.2064

Unit

Source

[2]

Last Observation

Value

2025-02-08.102293

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

349 (4)

Unit

Source

[1]

Radar Summary

First Observation
Last Observation
Delay (Discarded)
Doppler (Discarded)
Total Optical Observations (Discarded)

Radar

Value

Unit

Source

First Observation

Value

2012-05-10

Unit

Source

[3]

Last Observation

Value

2012-05-10

Unit

Source

[3]

Delay (Discarded)

Value

1 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[-]

Total Radar Observations (Discarded)

Value

1 (0)

Unit

Source

[1]

Note: The ASCII file is in a format suitable for Orbfit input.

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	MPC	Minor Planet Center: https://www.minorplanetcenter.net
[3]	JPL Radar Observations	Jet Propulsion Laboratory: https://ssd.jpl.nasa.gov/dat/radar_data_ast.txt

Computation parameters

As seen from:

Initial Date: *

Final Date: *

Output option:

One line per time step

Time step:*

* - these fields are required

Close Approaches for 326290 Akhenaten from 1950 to 2125

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1960-02-01 15:34	< 1 min	0.0739335	0.0739291	0.0000015
EARTH	1961-05-09 02:07	< 1 min	0.0838277	0.0838205	0.0000024
EARTH	1970-04-25 19:17	< 1 min	0.1937191	0.1937155	0.0000012
EARTH	1974-02-02 22:04	< 1 min	0.1099772	0.1099731	0.0000014
EARTH	1975-05-08 00:58	< 1 min	0.1358180	0.1358131	0.0000016
VENUS	1983-11-08 10:01	< 1 min	0.0426270	0.0426248	0.0000008
EARTH	1984-05-05 13:01	< 1 min	0.1299191	0.1299176	0.0000005
VENUS	1986-04-27 03:41	< 1 min	0.0145670	0.0145669	0.0000000
EARTH	1988-02-15 20:45	< 1 min	0.1910415	0.1910412	0.0000001
VENUS	1988-10-13 22:36	< 1 s	0.0475785	0.0475779	0.0000002
EARTH	1997-02-03 00:30	< 1 s	0.1109977	0.1109973	0.0000001
EARTH	1998-05-10 21:51	< 1 s	0.0534003	0.0534001	0.0000001
VENUS	2009-12-28 18:34	< 1 s	0.0168136	0.0168134	0.0000000
EARTH	2011-02-03 06:39	< 1 s	0.0973406	0.0973403	0.0000001
EARTH	2012-05-10 18:00	< 1 s	0.0319212	0.0319212	0.0000000
VENUS	2012-06-17 04:30	< 1 s	0.0469711	0.0469710	0.0000000
EARTH	2025-02-03 10:25	< 1 s	0.1234667	0.1234663	0.0000002
EARTH	2026-05-10 12:28	< 1 s	0.0735507	0.0735500	0.0000002
EARTH	2030-02-15 10:43	< 1 min	0.1926101	0.1926096	0.0000002
VENUS	2037-05-19 09:58	< 1 min	0.0166959	0.0166952	0.0000002
EARTH	2039-02-06 17:42	< 1 min	0.1997300	0.1997280	0.0000007
EARTH	2040-05-03 16:33	< 1 min	0.1501485	0.1501461	0.0000008
EARTH	2044-02-03 20:18	< 1 min	0.1143914	0.1143879	0.0000012
EARTH	2045-05-08 09:33	< 1 min	0.1223893	0.1223842	0.0000017
VENUS	2051-03-17 18:16	< 1 min	0.0330089	0.0330015	0.0000025
EARTH	2058-02-01 10:07	< 1 min	0.0567264	0.0567263	0.0000001
EARTH	2059-05-11 09:44	< 1 s	0.0242764	0.0242761	0.0000001
EARTH	2072-02-02 05:32	< 1 min	0.0571110	0.0571100	0.0000003
EARTH	2073-05-10 20:29	< 1 min	0.0300995	0.0300887	0.0000036
VENUS	2083-07-08 08:55	< 1 min	0.0350272	0.0350224	0.0000016
VENUS	2085-12-24 15:50	< 1 min	0.0150658	0.0150655	0.0000001
EARTH	2086-02-05 02:12	< 1 min	0.1240008	0.1239951	0.0000019
EARTH	2087-05-07 11:11	< 1 min	0.1658367	0.1658192	0.0000058
VENUS	2088-06-11 19:05	< 1 min	0.0325443	0.0325156	0.0000096
EARTH	2095-02-05 21:56	< 1 min	0.1589751	0.1589329	0.0000140
EARTH	2096-05-09 03:38	1.3	0.0981464	0.0981052	0.0000137
EARTH	2100-02-18 06:05	4.0	0.1985229	0.1984960	0.0000090
EARTH	2109-02-04 17:38	< 1 min	0.1091191	0.1090858	0.0000111
EARTH	2110-05-12 14:07	< 1 min	0.0486112	0.0485778	0.0000111
VENUS	2112-02-11 22:17	< 1 min	0.0369112	0.0368822	0.0000097
VENUS	2114-08-01 06:24	< 1 min	0.0268973	0.0268922	0.0000017
EARTH	2123-02-04 10:37	< 1 min	0.0873778	0.0873267	0.0000170
EARTH	2124-05-12 08:37	< 1 min	0.0319198	0.0318477	0.0000240

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
250.30764551	127.23420263	0.00329140	MINIMUM
105.52273110	29.36251053	0.05704030	MINIMUM
177.80931462	78.51847890	0.27401909	SADDLE
355.84501084	255.79418722	0.51214364	SADDLE
356.11992103	76.22396009	1.48833710	SADDLE
178.60203842	259.00732544	2.26813703	MAXIMUM

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MOID Plots

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