Asteroids

2025KF2 help

Last update: 2025-05-24 15:45 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

1.007

Aphelion (Q)

2.430

Eccentricity (e)

0.414

Inclination (i)

9.3

deg

Orbit period (P)

823.0

Earth MOID

0.00109

U parameter

8.3

Next Earth close approach

Date

2034-05-11

Nominal distance (from Earth center)

0.03719

5563212

Maximum Brightness

27.2

mag

Risk

Object is in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

31.3

mag

Diameter

1.5 - 3*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-05-21

Observatory

Space Surveillance Telescope, HEH Station

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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.718700

1-sigma variation

0.003291

Unit

Eccentricity (e)

Value

0.413992

1-sigma variation

0.001116

Unit

Inclination (i)

Value

9.3377

1-sigma variation

0.0202

Unit

Long. of Ascending Node (Ω)

Value

240.6414

1-sigma variation

0.0002

Unit

Arg. of Perihelion (ω)

Value

348.4362

1-sigma variation

0.0190

Unit

Mean Anomaly (M)

Value

357.02750

1-sigma variation

0.00037

Unit

Perihelion distance

Value

1.007172

1-sigma variation

Unit

Aphelion distance

Value

2.430228

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.001140

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

1.408112

1-sigma variation

Unit

MOID

Value

0.001093

1-sigma variation

Unit

Orbit Period

Value

822.9975

1-sigma variation

Unit

U parameter

Value

8.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.08304E-5	3.67376E-6	6.65470E-5	-7.95194E-7	6.26052E-5	-7.80392E-7
e	3.67376E-6	1.24617E-6	2.25733E-5	-2.69737E-7	2.12359E-5	-2.64579E-7
i	6.65470E-5	2.25733E-5	4.08906E-4	-4.88607E-6	3.84720E-4	-4.81122E-6
Ω	-7.95194E-7	-2.69737E-7	-4.88607E-6	5.83856E-8	-4.59667E-6	5.73073E-8
ω	6.26052E-5	2.12359E-5	3.84720E-4	-4.59667E-6	3.62490E-4	-4.73487E-6
M	-7.80392E-7	-2.64579E-7	-4.81122E-6	5.73073E-8	-4.73487E-6	1.39908E-7

Date of computation: 2025-05-24 15:45 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

31.28

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

1.5 - 3*

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

0.2

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.228249

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-05-21.702191

Unit

Source

[2]

Last Observation

Value

2025-05-21.9079

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

8 (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 2025KF2 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	1955-06-11 10:15	> 1 mo	0.1033210	0.0207793	1.0005296
EARTH	2007-04-11 03:23	> 1 w	0.1659580	0.0742021	0.0754149
EARTH	2016-05-11 09:03	> 1 mo	0.0351073	0.0062316	0.1153713
EARTH	2025-05-21 17:09	< 1 min	0.0009348	0.0009290	0.0000019
EARTH	2034-05-11 16:49	> 1 mo	0.0371878	0.0060110	0.1195776
EARTH	2043-04-12 22:34	> 1 d	0.1848557	0.0667800	0.0643452
EARTH	2090-06-17 07:26	> 1 mo	0.1333913	0.0361167	0.9136476
EARTH	2099-05-20 11:49	> 1 mo	0.0060150	0.0005068	0.5939802

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
7.40334691	137.69589755	0.00109262	MINIMUM
180.21345156	307.43408131	1.44109090	SADDLE
1.29861294	308.26528941	1.99687178	SADDLE
180.84994425	127.84323673	3.43968284	MAXIMUM

Download:

MOID Plots

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

Level lines of the squared distance function

2025KF2

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE/σ	IP	Exp. energy	PS
2066-05-21.922	75791.922	4.535	1.59 ± 0.002	4.28E3	5.05E-9	1.23E-12	-11.28
2072-05-21.359	77983.359	-1.904	0.08 ± 0.000	3.22E7	7.02E-9	1.60E-12	-11.22
2072-05-21.360	77983.360	0.192	0.84 ± 0.003	5.84E5	2.03E-6	4.73E-10	-8.75
2072-05-21.422	77983.422	-1.463	0.04 ± 0.000	1.24E7	3.83E-8	8.77E-12	-10.48
2088-05-21.301	83827.301	-1.091	0.60 ± 0.000	1.92E7	3.76E-8	8.65E-12	-10.61
2090-05-21.795	84557.795	0.146	1.34 ± 0.000	7.07E5	1.90E-6	4.41E-10	-8.92
2090-05-21.871	84557.871	0.094	0.79 ± 0.002	1.81E5	6.76E-6	1.57E-9	-8.37
2090-05-21.872	84557.872	-1.035	0.82 ± 0.002	1.46E5	4.88E-6	1.12E-9	-8.51
2090-05-21.916	84557.916	-0.786	0.07 ± 0.000	4.52E6	2.25E-7	5.18E-11	-9.85
2100-05-22.319	88210.319	0.379	0.15 ± 0.310	5.11E7	2.46E-8	5.75E-12	-10.87
2100-05-22.329	88210.329	4.157	0.09 ± 0.000	2.04E7	1.19E-11	2.87E-15	-14.17
2100-05-22.347	88210.347	0.374	1.59 ± 0.000	1.36E5	8.00E-6	1.87E-9	-8.35
2100-05-22.365	88210.365	2.897	0.80 ± 0.003	1.09E6	1.68E-8	4.02E-12	-11.02
2108-05-22.310	91132.310	1.298	0.12 ± 0.000	1.67E8	3.54E-9	8.33E-13	-11.75
2114-05-22.757	93323.757	0.260	1.36 ± 0.000	3.39E7	2.69E-8	6.28E-12	-10.90
2118-05-22.868	94784.868	-4.916	0.89 ± 0.003	3.54E5	1.91E-11	4.24E-15	-14.09
2124-05-22.286	96976.286	1.105	0.87 ± 0.000	9.62E5	6.90E-7	1.62E-10	-9.54
2124-05-22.309	96976.309	0.609	0.46 ± 0.000	3.20E7	3.46E-8	8.09E-12	-10.84


Based on 8 optical observations (of which 0 are rejected as outliers) from 2025/05/21.702 to 2025/05/21.908.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.74 and 1.74 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 5.0, Date of computation=20250524 155016.317 UTC.

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