Asteroids

2008CK70 help

Last update: 2026-06-04 23:11 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.585

Aphelion (Q)

1.621

Eccentricity (e)

0.469

Inclination (i)

6.1

deg

Orbit period (P)

423.2

Earth MOID

0.00005

U parameter

6.9

Next Earth close approach

Date

2030-02-17

Nominal distance (from Earth center)

0.07926

11856381

Maximum Brightness

22.5

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.2

mag

Diameter

24 - 50*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2008-02-09

Observatory

Lincoln Laboratory ETS, New Mexico

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.103090

1-sigma variation

0.000079

Unit

Eccentricity (e)

Value

0.469471

1-sigma variation

0.000063

Unit

Inclination (i)

Value

6.0666

1-sigma variation

0.0011

Unit

Long. of Ascending Node (Ω)

Value

145.6137

1-sigma variation

0.0003

Unit

Arg. of Perihelion (ω)

Value

106.0002

1-sigma variation

0.0049

Unit

Mean Anomaly (M)

Value

239.42856

1-sigma variation

0.59626

Unit

Perihelion distance

Value

0.585222

1-sigma variation

Unit

Aphelion distance

Value

1.620958

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.000266

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.251155

1-sigma variation

Unit

MOID

Value

0.000051

1-sigma variation

Unit

Orbit Period

Value

423.1698

1-sigma variation

Unit

U parameter

Value

6.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.16282E-9	4.97041E-9	8.56106E-8	-2.13364E-8	3.81225E-7	-4.68090E-5
e	4.97041E-9	4.00967E-9	6.90621E-8	-1.72211E-8	3.07554E-7	-3.77522E-5
i	8.56106E-8	6.90621E-8	1.18975E-6	-2.96701E-7	5.29735E-6	-6.50246E-4
Ω	-2.13364E-8	-1.72211E-8	-2.96701E-7	7.42444E-8	-1.32115E-6	1.62058E-4
ω	3.81225E-7	3.07554E-7	5.29735E-6	-1.32115E-6	2.35908E-5	-2.89555E-3
M	-4.68090E-5	-3.77522E-5	-6.50246E-4	1.62058E-4	-2.89555E-3	3.55532E-1

Date of computation: 2026-06-04 23:11 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

25.237

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

24 - 50*

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

[-]

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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

Unit

Source

[1]

Unobserved

Value

6707

Unit

Source

[1]

Normalized RMS of residuals

Value

0.475333

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2008-01-10.505939

Unit

Source

[2]

Last Observation

Value

2008-02-14.00589

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

87 (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

Filters

Initial Date: *

Final Date: *

Normalised Only accepted

Max residual (arcsec):

* - these fields are required

Plot

Computation parameters

As seen from:

Initial Date: *

Final Date: *

Output option:

One line per time step

Time step:*

* - these fields are required

Note: Ephemerides requests are limited to a maximum of 1000 points and a final date not exceeding 2040/12/31 00:00.

Close Approaches for 2008CK70 from 1950 to 2126

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1963-09-20 05:42	> 1 w	0.0577711	0.0529571	0.1085828
EARTH	1968-02-07 17:23	> 1 d	0.1710247	0.0019124	0.1285252
VENUS	1971-09-16 10:21	> 1 d	0.0087498	0.0081708	0.0050711
EARTH	1975-02-21 06:57	184.4	0.1933986	0.1544351	0.0129881
EARTH	1983-09-20 20:01	848.0	0.0635793	0.0535238	0.0072251
EARTH	1988-02-10 05:39	714.1	0.1146155	0.0778380	0.0122595
EARTH	2003-09-25 21:16	197.3	0.1539583	0.1450148	0.0029948
EARTH	2008-02-15 00:18	< 1 min	0.0024813	0.0024798	0.0000005
EARTH	2017-09-20 23:31	330.8	0.0578479	0.0577851	0.0002372
EARTH	2030-02-17 16:55	741.4	0.0792550	0.0352427	0.0146708
VENUS	2030-05-20 14:59	> 1 d	0.0465503	0.0464503	0.0010887
VENUS	2031-05-19 18:06	> 1 d	0.0090900	0.0088341	0.0045397
EARTH	2039-09-23 13:11	> 1 w	0.0696766	0.0585473	0.2252931
VENUS	2050-01-26 00:48	> 1 mo	0.0456501	0.0456277	0.0311056
VENUS	2051-01-24 13:58	> 1 mo	0.0148258	0.0091827	0.9518353
EARTH	2052-02-18 06:23	> 1 w	0.0761293	0.0019329	0.7394767
EARTH	2061-09-19 13:29	> 1 mo	0.0744915	0.0587747	1.1079129
EARTH	2074-02-10 04:15	> 1 mo	0.1188540	0.0005752	4.7237408
EARTH	2076-09-27 18:34	> 1 mo	0.1526121	0.0604308	4.5005806
EARTH	2089-02-15 13:40	> 1 mo	0.0190878	0.0020136	3.0634430
VENUS	2089-03-19 17:19	> 1 mo	0.0262393	0.0093122	3.3000228
EARTH	2098-09-23 23:40	> 1 mo	0.0769967	0.0593664	16.4162792
EARTH	2111-02-22 07:46	> 1 mo	0.1861702	0.0019259	51.6792405
EARTH	2118-02-13 00:08	> 1 mo	0.0812980	0.0021728	56.3768298
VENUS	2119-05-12 18:39	> 1 mo	0.0232709	0.0097670	58.8422257

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
282.79988135	43.55268783	0.00011083	MINIMUM
77.78909273	257.79156068	0.05802772	MINIMUM
0.79234499	150.88175031	0.43783911	SADDLE
180.05110671	330.72564211	0.64810107	SADDLE
1.27071320	331.72849586	1.56888654	SADDLE
180.69275606	151.11829537	2.63368024	MAXIMUM

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MOID Plots

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