Asteroids

2025LK help

Last update: 2026-01-20 13:01 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.918

Aphelion (Q)

1.609

Eccentricity (e)

0.273

Inclination (i)

13.3

deg

Orbit period (P)

519.0

Earth MOID

0.00198

U parameter

4.8

Next Earth close approach

Date

2052-06-07

Nominal distance (from Earth center)

0.00807

1206537

Maximum Brightness

19.2

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

10 - 23*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-06-05

Observatory

Pan-STARRS 1, Haleakala

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

1.263862

1-sigma variation

0.000009

Unit

Eccentricity (e)

Value

0.273368

1-sigma variation

0.000007

Unit

Inclination (i)

Value

13.2747

1-sigma variation

0.0002

Unit

Long. of Ascending Node (Ω)

Value

78.0109

1-sigma variation

4.316E-6

Unit

Arg. of Perihelion (ω)

Value

235.9011

1-sigma variation

0.0001

Unit

Mean Anomaly (M)

Value

81.64512

1-sigma variation

0.00073

Unit

Perihelion distance

Value

0.918363

1-sigma variation

Unit

Aphelion distance

Value

1.609361

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.396072

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.002644

1-sigma variation

Unit

MOID

Value

0.001984

1-sigma variation

Unit

Orbit Period

Value

518.9767

1-sigma variation

Unit

U parameter

Value

4.8

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	7.46674E-11	5.63289E-11	1.38217E-9	2.90294E-11	4.18525E-10	-6.28543E-9
e	5.63289E-11	4.25029E-11	1.04221E-9	2.21194E-11	3.18270E-10	-4.74295E-9
i	1.38217E-9	1.04221E-9	2.56387E-8	5.19276E-10	7.59921E-9	-1.16275E-7
Ω	2.90294E-11	2.21194E-11	5.19276E-10	1.86245E-11	2.28107E-10	-2.47647E-9
ω	4.18525E-10	3.18270E-10	7.59921E-9	2.28107E-10	3.10770E-9	-3.56006E-8
M	-6.28543E-9	-4.74295E-9	-1.16275E-7	-2.47647E-9	-3.56006E-8	5.29282E-7

Date of computation: 2026-01-20 13:01 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

27.028

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

10 - 23*

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

202

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.655984

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-05-29.487747

Unit

Source

[2]

Last Observation

Value

2025-12-17.145272

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

118 (1)

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 2025LK 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	1954-06-01 12:44	> 1 mo	0.1004632	0.0064023	4.8300063
EARTH	1961-06-08 18:42	> 1 w	0.0028527	0.0021550	0.0601108
EARTH	1971-05-27 09:11	> 1 d	0.1884246	0.0126076	0.0867585
EARTH	1988-10-24 06:52	> 1 d	0.1938471	0.1819557	0.0170332
EARTH	1998-07-04 02:48	> 1 d	0.1516090	0.0929144	0.0204787
EARTH	2008-06-07 09:52	126.6	0.0128854	0.0097157	0.0010583
EARTH	2015-10-26 11:11	18.2	0.1956042	0.1948351	0.0002591
EARTH	2025-06-08 19:48	< 1 s	0.0006633	0.0006633	0.0000000
EARTH	2052-06-07 22:47	196.6	0.0080652	0.0031677	0.0016327
EARTH	2083-06-07 07:15	> 1 w	0.0267283	0.0000044	0.2966804
EARTH	2090-06-25 04:38	> 1 mo	0.1268662	0.0249283	0.8573659

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
316.03473676	155.97644530	0.00198357	MINIMUM
58.43864530	287.28898242	0.20565262	MINIMUM
21.37122889	241.44649934	0.23394566	SADDLE
186.00726888	36.10639936	0.67015575	SADDLE
0.52900912	33.18025338	1.89580831	SADDLE
176.90618475	209.21096835	2.61402067	MAXIMUM

Download:

MOID Plots

Click on the images to zoom-in and zoom-out

Level lines of the squared distance function

2025LK

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS
2052-06-08.619	70696.619	4.961	1.35 ± 0.000	3.56E1	6.87E-8	9.79E-2	-7.88
2059-06-09.343	73253.343	2.098	1.13 ± 0.000	4.52E3	1.97E-5	9.79E-2	-5.52
2063-06-09.359	74714.359	3.703	1.45 ± 0.000	3.89E4	8.92E-9	9.80E-2	-8.91


Based on 118 optical observations (of which 1 are rejected as outliers) from 2025/05/29.488 to 2025/12/17.145.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.51 and 1.51 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 5.0, Date of computation=20260121 105308.104 UTC.

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Download Impactor Table as: