Asteroids

329614 2003KU2 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.869

Aphelion (Q)

4.510

Eccentricity (e)

0.677

Inclination (i)

5.4

deg

Orbit period (P)

1611.2

Earth MOID

0.02664

U parameter

0.0

Next Earth close approach

Date

2034-09-10

Nominal distance (from Earth center)

0.17454

26110509

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

17.7

mag

Diameter

900

Taxonomic type

Rotation period (T)

3.278

Discovery Information

Discovery Date

2003-05-22

Observatory

Steward Observatory, Kitt Peak-Spacewatch

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

2.689668

1-sigma variation

6.219E-9

Unit

Eccentricity (e)

Value

0.676808

1-sigma variation

1.792E-8

Unit

Inclination (i)

Value

5.3992

1-sigma variation

6.380E-6

Unit

Long. of Ascending Node (Ω)

Value

105.2095

1-sigma variation

4.652E-5

Unit

Arg. of Perihelion (ω)

Value

246.7995

1-sigma variation

4.707E-5

Unit

Mean Anomaly (M)

Value

1.43433

1-sigma variation

4.171E-6

Unit

Perihelion distance

Value

0.869280

1-sigma variation

Unit

Aphelion distance

Value

4.510056

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.003065

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.132967

1-sigma variation

Unit

MOID

Value

0.026640

1-sigma variation

Unit

Orbit Period

Value

1611.1888

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.86788E-17	-9.13878E-18	4.04537E-15	-2.76738E-14	4.17143E-14	-2.56507E-14
e	-9.13878E-18	3.21154E-16	-4.92821E-15	-2.94866E-14	8.49701E-14	7.88545E-15
i	4.04537E-15	-4.92821E-15	4.07083E-11	-1.04274E-10	1.05777E-10	-3.57466E-12
Ω	-2.76738E-14	-2.94866E-14	-1.04274E-10	2.16433E-9	-2.17035E-9	2.59303E-11
ω	4.17143E-14	8.49701E-14	1.05777E-10	-2.17035E-9	2.21552E-9	-3.77050E-11
M	-2.56507E-14	7.88545E-15	-3.57466E-12	2.59303E-11	-3.77050E-11	1.74010E-11

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

3.278

Unit

Source

[1]

Quality

Value

Unit

Source

[1]

Amplitude

Value

0.2

Unit

mag

Source

[1]

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

[1]

[2]

Taxonomy (all)

Value

Unit

Source

[1]

[3]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

17.61

17.687

Unit

mag

Source

[1]

[4]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[4]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.227

Unit

Source

[2]

Diameter

Value

900

Unit

Source

[2]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

0.81

0.43

0.27

Unit

B-V

V-R

R-I

Source

[1]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Radar R

Unit

Source

[5]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Hicks, M. et al. (2012) href="http://www.astronomerstelegram.org/?read=4262"> ATel#4262 (Broadband Photometry of the Potentially Hazardous Asteroid 329614 (2003 KU2))
[2]	EARN	1.) N. G. Simion et al, Spectral properties of near-Earth objects with low-Jovian Tisserand invariant (2021)
[3]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[4]	ESA Aegis	ESA orbit determination and impact monitoring system
[5]	EARN	1.) href="http://echo.jpl.nasa.gov/asteroids/index.html">JPL's NEO Radar Detection Program Webpage

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

8117

Unit

Source

[1]

Unobserved

Value

113

Unit

Source

[1]

Normalized RMS of residuals

Value

0.518794

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2003-04-05.43149

Unit

Source

[2]

Last Observation

Value

2025-06-25.303907

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

369 (3)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2012-07-22

Unit

Source

[3]

Last Observation

Value

2012-07-23

Unit

Source

[3]

Delay (Discarded)

Value

2 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[-]

Total Radar Observations (Discarded)

Value

2 (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 329614 2003KU2 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	2012-07-15 08:58	< 1 s	0.1034194	0.1034193	0.0000000
EARTH	2034-09-10 09:31	< 1 min	0.1745380	0.1745378	0.0000001
EARTH	2056-08-09 14:53	< 1 min	0.1114047	0.1114020	0.0000009
EARTH	2091-11-01 16:20	< 1 min	0.0807827	0.0807815	0.0000004
MARS	2109-07-16 08:28	< 1 min	0.0435412	0.0435393	0.0000007
EARTH	2113-09-17 14:45	1.4	0.1604212	0.1604209	0.0000001

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
336.39213972	199.09789746	0.02703194	MINIMUM
21.69722628	297.86711122	0.08581637	MINIMUM
0.30745011	251.41433368	0.15843152	SADDLE
359.02869573	68.46173290	1.86154423	SADDLE
179.84720914	69.42077037	3.52110382	SADDLE
179.75080873	249.37613367	5.51297022	MAXIMUM

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MOID Plots

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