Asteroids

326290 Akhenaten help

Last update: 2024-04-25 23:56 UTC

Orbital Properties

Epoch

60400.0

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

0.00337

U parameter

0.2

A₂

-31.7

10^-15au/days²

Next Earth close approach

Date

2025-02-03

Nominal distance (from Earth center)

0.12347

18470345

Maximum Brightness

20.9

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

21.8

mag

Diameter

100

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

1998-04-21

Observatory

Goodricke-Pigott Observatory, Tucson

Orbit Visualiser

Click the button to start Orbit Visualiser

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

60400.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.878930

1-sigma variation

2.819E-9

Unit

Eccentricity (e)

Value

0.440233

1-sigma variation

4.010E-8

Unit

Inclination (i)

Value

3.3788

1-sigma variation

2.999E-6

Unit

Long. of Ascending Node (Ω)

Value

53.4433

1-sigma variation

2.329E-5

Unit

Arg. of Perihelion (ω)

Value

309.3475

1-sigma variation

2.322E-5

Unit

Mean Anomaly (M)

Value

66.00420

1-sigma variation

0.00002

Unit

Perihelion distance

Value

0.491996

1-sigma variation

Unit

Aphelion distance

Value

1.265864

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.434414

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.027342

1-sigma variation

Unit

MOID

Value

0.003374

1-sigma variation

Unit

Orbit Period

Value

300.9745

1-sigma variation

Unit

U parameter

Value

0.2

1-sigma variation

Unit

A₂

Value

-31.69362

1-sigma variation

3.25473

Unit

10^-15au/days²

Covariance Matrix

	a	e	i	Ω	ω	M	A₂
a	7.94570E-18	5.99343E-17	-3.73470E-16	9.51012E-15	-6.54981E-15	-4.05896E-14	9.02965E-9
e	5.99343E-17	1.60823E-15	2.28952E-14	-9.54388E-14	6.85000E-14	-1.05731E-13	6.39022E-8
i	-3.73470E-16	2.28952E-14	8.99657E-12	-3.98420E-11	3.91658E-11	1.62592E-12	-1.64155E-6
Ω	9.51012E-15	-9.54388E-14	-3.98420E-11	5.42473E-10	-5.34760E-10	-3.67006E-11	2.06853E-5
ω	-6.54981E-15	6.85000E-14	3.91658E-11	-5.34760E-10	5.39314E-10	3.35612E-13	-1.76548E-5
M	-4.05896E-14	-1.05731E-13	1.62592E-12	-3.67006E-11	3.35612E-13	2.63848E-10	-4.50776E-5
A₂	9.02965E-9	6.39022E-8	-1.64155E-6	2.06853E-5	-1.76548E-5	-4.50776E-5	1.05932E1

Date of computation: 2024-04-23 10:08 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

21.782

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 ODIM	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

10233

Unit

Source

[1]

Unobserved

Value

1103

Unit

Source

[1]

Normalized RMS of residuals

Value

0.584072

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

2021-04-19.253617

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

346 (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

[1]

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 ODIM	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 2124

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possibile distance in au	Distance uncert. in au
EARTH	1960-02-01 15:34	4.0	0.0739343	0.0735953	0.0001134
EARTH	1961-05-09 02:07	6.8	0.0838291	0.0832796	0.0001832
EARTH	1970-04-25 19:17	39.1	0.1937184	0.1934353	0.0000944
EARTH	1974-02-02 22:04	11.3	0.1099780	0.1096474	0.0001103
EARTH	1975-05-08 00:58	5.4	0.1358189	0.1354339	0.0001283
VENUS	1983-11-08 10:01	5.1	0.0426275	0.0424341	0.0000645
EARTH	1984-05-05 13:01	7.2	0.1299188	0.1298040	0.0000383
VENUS	1986-04-27 03:41	1.4	0.0145670	0.0145664	0.0000002
EARTH	1988-02-15 20:45	4.8	0.1910415	0.1910067	0.0000116
VENUS	1988-10-13 22:36	1.5	0.0475784	0.0475067	0.0000239
EARTH	1997-02-03 00:30	< 1 min	0.1109976	0.1109566	0.0000137
EARTH	1998-05-10 21:51	< 1 min	0.0534003	0.0533587	0.0000139
VENUS	2009-12-28 18:34	< 1 min	0.0168136	0.0168121	0.0000005
EARTH	2011-02-03 06:39	< 1 min	0.0973406	0.0973390	0.0000005
EARTH	2012-05-10 17:60	< 1 s	0.0319212	0.0319202	0.0000004
VENUS	2012-06-17 04:30	< 1 min	0.0469711	0.0469698	0.0000004
EARTH	2025-02-03 10:25	< 1 min	0.1234666	0.1234547	0.0000040
EARTH	2026-05-10 12:28	< 1 min	0.0735505	0.0735346	0.0000053
EARTH	2030-02-15 10:43	2.3	0.1926102	0.1925938	0.0000055
VENUS	2037-05-19 09:58	1.4	0.0166957	0.0166656	0.0000101
EARTH	2039-02-06 17:42	1.4	0.1997296	0.1996421	0.0000292
EARTH	2040-05-03 16:33	6.7	0.1501481	0.1500531	0.0000317
EARTH	2044-02-03 20:18	5.9	0.1143921	0.1142385	0.0000512
EARTH	2045-05-08 09:33	3.3	0.1223902	0.1221734	0.0000723
VENUS	2051-03-17 18:16	7.9	0.0330103	0.0326859	0.0001083
EARTH	2058-02-01 10:07	< 1 min	0.0567264	0.0567250	0.0000005
EARTH	2059-05-11 09:44	< 1 min	0.0242763	0.0242751	0.0000004
EARTH	2072-02-02 05:32	1.6	0.0571111	0.0570715	0.0000137
EARTH	2073-05-10 20:29	4.0	0.0300975	0.0296173	0.0001601
VENUS	2083-07-08 08:55	5.1	0.0350281	0.0348076	0.0000736
VENUS	2085-12-24 15:49	8.1	0.0150658	0.0150583	0.0000043
EARTH	2086-02-05 02:13	14.3	0.1240018	0.1237459	0.0000853
EARTH	2087-05-07 11:11	14.9	0.1658399	0.1650584	0.0002605
VENUS	2088-06-11 19:04	29.6	0.0325389	0.0312457	0.0004336
EARTH	2095-02-05 21:55	30.5	0.1589671	0.1570613	0.0006358
EARTH	2096-05-09 03:38	56.4	0.0981387	0.0962819	0.0006189
EARTH	2100-02-18 06:07	181.3	0.1985280	0.1973096	0.0004062
EARTH	2109-02-04 17:38	23.9	0.1091128	0.1076014	0.0005051
EARTH	2110-05-12 14:07	12.2	0.0486050	0.0470957	0.0005031
VENUS	2112-02-11 22:16	30.1	0.0369166	0.0356054	0.0004390
VENUS	2114-08-01 06:24	6.4	0.0268964	0.0266613	0.0000785
EARTH	2123-02-04 10:38	32.0	0.0873873	0.0851082	0.0007671
EARTH	2124-05-12 08:37	8.4	0.0319333	0.0286778	0.0010852

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