Asteroids

2008PK3 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.761

Aphelion (Q)

3.017

Eccentricity (e)

0.597

Inclination (i)

17.1

deg

Orbit period (P)

948.3

Earth MOID

0.00190

U parameter

1.6

Next Earth close approach

Date

2086-02-23

Nominal distance (from Earth center)

0.19088

28555336

Maximum Brightness

20.8

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

110 - 240*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2008-08-03

Observatory

Siding Spring Survey

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

1.888964

1-sigma variation

7.871E-8

Unit

Eccentricity (e)

Value

0.597048

1-sigma variation

0.000003

Unit

Inclination (i)

Value

17.1092

1-sigma variation

0.0002

Unit

Long. of Ascending Node (Ω)

Value

122.3378

1-sigma variation

0.0002

Unit

Arg. of Perihelion (ω)

Value

109.5197

1-sigma variation

0.0006

Unit

Mean Anomaly (M)

Value

261.06895

1-sigma variation

0.00026

Unit

Perihelion distance

Value

0.761162

1-sigma variation

Unit

Aphelion distance

Value

3.016765

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.534046

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.003600

1-sigma variation

Unit

MOID

Value

0.001897

1-sigma variation

Unit

Orbit Period

Value

948.2740

1-sigma variation

Unit

U parameter

Value

1.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.19485E-15	-1.66813E-13	-1.00717E-11	7.65657E-12	4.16321E-11	-1.97498E-11
e	-1.66813E-13	6.38869E-12	3.49180E-10	-4.74681E-11	-1.54981E-9	4.56805E-10
i	-1.00717E-11	3.49180E-10	3.58915E-8	9.41078E-9	-9.97858E-8	2.89111E-8
Ω	7.65657E-12	-4.74681E-11	9.41078E-9	3.75586E-8	1.78893E-9	-3.09544E-8
ω	4.16321E-11	-1.54981E-9	-9.97858E-8	1.78893E-9	3.89773E-7	-1.15681E-7
M	-1.97498E-11	4.56805E-10	2.89111E-8	-3.09544E-8	-1.15681E-7	6.60597E-8

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

21.962

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

110 - 240*

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

Unit

Source

[-]

Download this part as:

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	Estimation	Estimated from absolute magnitude

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

4750

Unit

Source

[1]

Unobserved

Value

1541

Unit

Source

[1]

Normalized RMS of residuals

Value

0.557097

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2008-08-03.7944

Unit

Source

[2]

Last Observation

Value

2021-08-05.363939

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

40 (0)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

Unit

Source

[-]

Last Observation

Value

Unit

Source

[-]

Delay (Discarded)

Value

0 (0)

Unit

Source

[-]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[-]

Total Radar Observations (Discarded)

Value

0 (0)

Unit

Source

[-]

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

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 2008PK3 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	1974-08-02 09:30	113.2	0.1234294	0.1191358	0.0014312
EARTH	1995-07-25 19:28	< 1 min	0.0058820	0.0058582	0.0000079
EARTH	2008-07-22 09:38	< 1 min	0.0437623	0.0437567	0.0000019
EARTH	2021-07-12 20:24	< 1 min	0.1510491	0.1510314	0.0000059
EARTH	2086-02-23 12:27	1.9	0.1908806	0.1908683	0.0000041
EARTH	2104-08-02 06:47	2.2	0.1106471	0.1105764	0.0000235
EARTH	2117-07-26 20:27	2.0	0.0110127	0.0109855	0.0000091

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
39.22828194	200.70059424	0.00167851	MINIMUM
317.58213623	52.32215529	0.18139621	MINIMUM
355.63586518	120.33415496	0.35439212	SADDLE
0.04561844	309.58946001	1.73255896	SADDLE
179.27247067	310.33805666	2.08445016	SADDLE
180.88438696	131.17775466	3.99763957	MAXIMUM

Download:

MOID Plots

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