Asteroids

322756 2001CK32 help

Last update: 2026-07-30 09:40 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Aten

Perihelion (q)

0.447

Aphelion (Q)

1.001

Eccentricity (e)

0.383

Inclination (i)

8.1

deg

Orbit period (P)

225.1

Earth MOID

0.07742

U parameter

0.9

A₂

-24.5

10^-15au/days²

Next Earth close approach

Date

2030-02-07

Nominal distance (from Earth center)

0.0782

11697827

Maximum Brightness

18.1

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

19.1

mag

Diameter

400 - 900*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2001-02-13

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

0.724147

1-sigma variation

5.665E-9

Unit

Eccentricity (e)

Value

0.382681

1-sigma variation

6.385E-8

Unit

Inclination (i)

Value

8.1482

1-sigma variation

1.332E-5

Unit

Long. of Ascending Node (Ω)

Value

109.2572

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

233.9728

1-sigma variation

0.0001

Unit

Mean Anomaly (M)

Value

147.05502

1-sigma variation

0.00004

Unit

Perihelion distance

Value

0.447030

1-sigma variation

Unit

Aphelion distance

Value

1.001264

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.186010

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.512215

1-sigma variation

Unit

MOID

Value

0.077422

1-sigma variation

Unit

Orbit Period

Value

225.0810

1-sigma variation

Unit

U parameter

Value

0.9

1-sigma variation

Unit

A₂

Value

-24.50969

1-sigma variation

6.17092

Unit

10^-15au/days²

Covariance Matrix

	a	e	i	Ω	ω	M	A₂
a	3.20977E-17	1.76570E-18	2.75195E-14	1.45003E-13	-1.41657E-13	-1.54038E-13	3.23454E-8
e	1.76570E-18	4.07657E-15	2.17253E-13	3.59793E-13	4.05336E-13	-1.63005E-12	3.48580E-8
i	2.75195E-14	2.17253E-13	1.77408E-10	7.68773E-10	-7.15849E-10	-1.65916E-10	5.27333E-6
Ω	1.45003E-13	3.59793E-13	7.68773E-10	3.88325E-9	-3.81825E-9	-5.15941E-10	3.04640E-5
ω	-1.41657E-13	4.05336E-13	-7.15849E-10	-3.81825E-9	3.94904E-9	1.05848E-10	-1.61571E-5
M	-1.54038E-13	-1.63005E-12	-1.65916E-10	-5.15941E-10	1.05848E-10	1.58574E-9	-1.89017E-4
A₂	3.23454E-8	3.48580E-8	5.27333E-6	3.04640E-5	-1.61571E-5	-1.89017E-4	3.80803E1

Date of computation: 2026-07-30 09:40 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

19.1

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

400 - 900*

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

7723

Unit

Source

[1]

Unobserved

Value

1634

Unit

Source

[1]

Normalized RMS of residuals

Value

0.445538

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2001-02-13.47491

Unit

Source

[2]

Last Observation

Value

2022-04-07.133092

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

1294 (2)

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):

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Plot

Computation parameters

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Initial Date: *

Final Date: *

Output option:

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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 322756 2001CK32 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	1951-03-22 19:05	< 1 min	0.1587080	0.1586967	0.0000038
EARTH	1959-02-19 15:34	1.8	0.1029162	0.1029080	0.0000027
EARTH	1967-02-06 14:05	< 1 min	0.1175342	0.1175211	0.0000044
EARTH	1972-03-20 04:42	< 1 min	0.1440297	0.1440244	0.0000018
EARTH	1980-02-10 14:51	< 1 min	0.0807762	0.0807735	0.0000009
EARTH	1988-02-07 11:27	< 1 min	0.1297268	0.1297243	0.0000008
EARTH	1993-03-22 16:52	< 1 min	0.1578882	0.1578873	0.0000003
EARTH	2001-02-19 04:41	< 1 min	0.1044370	0.1044367	0.0000001
EARTH	2009-02-06 03:22	< 1 s	0.1199706	0.1199700	0.0000002
EARTH	2014-03-21 06:00	< 1 min	0.1464739	0.1464733	0.0000002
EARTH	2022-02-15 12:01	< 1 min	0.0967662	0.0967660	0.0000001
VENUS	2028-02-25 22:09	< 1 min	0.0484996	0.0484987	0.0000003
VENUS	2028-10-07 15:59	< 1 min	0.0461933	0.0461923	0.0000003
VENUS	2029-05-20 09:39	< 1 min	0.0444800	0.0444790	0.0000003
VENUS	2029-12-31 03:09	< 1 min	0.0432790	0.0432780	0.0000003
EARTH	2030-02-07 09:21	< 1 min	0.0781951	0.0781950	0.0000001
VENUS	2030-08-12 20:19	< 1 min	0.0420285	0.0420274	0.0000004
VENUS	2031-03-25 13:40	< 1 min	0.0412786	0.0412773	0.0000004
VENUS	2031-11-05 07:01	< 1 min	0.0408280	0.0408265	0.0000005
VENUS	2032-06-17 00:08	< 1 min	0.0405424	0.0405407	0.0000006
VENUS	2033-01-27 17:02	< 1 min	0.0404150	0.0404128	0.0000007
VENUS	2033-09-09 09:44	< 1 min	0.0403937	0.0403910	0.0000009
VENUS	2034-04-22 02:31	< 1 min	0.0404270	0.0404234	0.0000012
VENUS	2034-12-02 19:18	< 1 min	0.0405802	0.0405754	0.0000016
VENUS	2035-07-15 11:47	< 1 min	0.0409602	0.0409537	0.0000022
VENUS	2036-02-25 03:52	< 1 min	0.0416109	0.0416018	0.0000030
VENUS	2036-10-06 19:50	< 1 min	0.0426367	0.0426239	0.0000043
VENUS	2037-05-19 11:38	< 1 min	0.0440390	0.0440211	0.0000060
VENUS	2037-12-30 03:23	< 1 min	0.0459905	0.0459659	0.0000082
EARTH	2038-02-08 08:10	1.3	0.0818283	0.0818219	0.0000022
VENUS	2038-08-11 18:49	< 1 min	0.0483811	0.0483474	0.0000112
EARTH	2046-03-03 15:09	12.6	0.1252106	0.1251742	0.0000122
EARTH	2057-02-05 22:47	2.0	0.0840786	0.0840336	0.0000150
EARTH	2065-03-14 04:53	10.0	0.1381507	0.1381063	0.0000148
EARTH	2068-02-08 07:38	2.1	0.1933126	0.1931621	0.0000502
MERCURY	2072-10-17 20:34	7.5	0.0490671	0.0490235	0.0000146
EARTH	2076-02-07 04:46	2.7	0.0803701	0.0803674	0.0000009
EARTH	2084-03-02 14:26	18.0	0.1256687	0.1256158	0.0000176
EARTH	2095-02-06 15:14	4.2	0.0836437	0.0836001	0.0000146
EARTH	2103-03-17 18:13	15.6	0.1422317	0.1421426	0.0000298
EARTH	2106-02-08 15:28	4.0	0.1831057	0.1828126	0.0000977
EARTH	2114-02-10 03:31	14.1	0.0868870	0.0868003	0.0000290
EARTH	2122-03-19 11:00	15.0	0.1461325	0.1460112	0.0000405
EARTH	2125-02-08 10:23	4.8	0.1824794	0.1821270	0.0001175

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
143.76838693	33.36464394	0.07742214	MINIMUM
358.01601978	237.39534973	0.56695365	SADDLE
356.73508807	55.40000997	1.43611657	SADDLE
177.38535615	235.98938950	2.00711804	MAXIMUM

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MOID Plots

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