Asteroids

2025SK3 help

Last update: 2025-09-24 14:14 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.940

Aphelion (Q)

1.346

Eccentricity (e)

0.178

Inclination (i)

14.3

deg

Orbit period (P)

446.2

Earth MOID

0.01612

U parameter

7.1

Next Earth close approach

Date

2036-09-19

Nominal distance (from Earth center)

0.04978

7447162

Maximum Brightness

23.1

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

27.1

mag

Diameter

10 - 23*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-09-20

Observatory

Palomar Mountain--ZTF

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

1.142815

1-sigma variation

0.000193

Unit

Eccentricity (e)

Value

0.177607

1-sigma variation

0.000145

Unit

Inclination (i)

Value

14.2585

1-sigma variation

0.0096

Unit

Long. of Ascending Node (Ω)

Value

357.5567

1-sigma variation

0.0003

Unit

Arg. of Perihelion (ω)

Value

62.5033

1-sigma variation

0.0166

Unit

Mean Anomaly (M)

Value

4.17305

1-sigma variation

0.01361

Unit

Perihelion distance

Value

0.939843

1-sigma variation

Unit

Aphelion distance

Value

1.345788

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.018206

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.209168

1-sigma variation

Unit

MOID

Value

0.016120

1-sigma variation

Unit

Orbit Period

Value

446.2337

1-sigma variation

Unit

U parameter

Value

7.1

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.72894E-8	2.79579E-8	1.84841E-6	4.84524E-8	-3.15950E-6	2.61443E-6
e	2.79579E-8	2.10201E-8	1.38703E-6	3.63562E-8	-2.34935E-6	1.94952E-6
i	1.84841E-6	1.38703E-6	9.16707E-5	2.40310E-6	-1.56216E-4	1.29375E-4
Ω	4.84524E-8	3.63562E-8	2.40310E-6	6.30097E-8	-4.09557E-6	3.39168E-6
ω	-3.15950E-6	-2.34935E-6	-1.56216E-4	-4.09557E-6	2.74213E-4	-2.25078E-4
M	2.61443E-6	1.94952E-6	1.29375E-4	3.39168E-6	-2.25078E-4	1.85248E-4

Date of computation: 2025-09-24 14:14 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

27.06

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

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

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.731924

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-09-20.368081

Unit

Source

[2]

Last Observation

Value

2025-09-21.84711

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

36 (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 2025SK3 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	1954-09-23 11:30	516.8	0.0234095	0.0156033	0.0049680
EARTH	1955-03-05 09:03	1312.4	0.1944551	0.1886100	0.0021487
EARTH	1965-09-25 15:21	364.1	0.0630363	0.0492835	0.0046191
EARTH	1966-03-01 01:25	745.6	0.1817716	0.1784977	0.0012002
EARTH	1976-10-01 10:34	146.8	0.1563386	0.1505593	0.0019264
EARTH	1977-02-21 03:11	378.6	0.1713661	0.1707786	0.0002446
EARTH	2014-09-19 01:59	1223.8	0.0699115	0.0222494	0.0168269
EARTH	2025-09-22 03:17	< 1 min	0.0170465	0.0170108	0.0000119
EARTH	2036-09-19 16:26	1252.9	0.0497812	0.0156580	0.0164055
EARTH	2047-09-13 01:05	178.0	0.1947894	0.1856462	0.0030478
EARTH	2065-02-16 18:57	1163.2	0.1912985	0.1716419	0.0094571
EARTH	2075-09-29 20:46	> 1 d	0.1261340	0.0305890	0.0320662
EARTH	2076-02-25 19:55	> 1 d	0.1666238	0.1658410	0.0029629
EARTH	2086-09-23 17:02	> 1 d	0.0259190	0.0169778	0.0289784
EARTH	2087-03-06 06:25	> 1 d	0.1937305	0.1787428	0.0149151
EARTH	2097-09-24 10:26	> 1 d	0.0413504	0.0165009	0.0219442
EARTH	2098-03-04 02:34	> 1 d	0.1881984	0.1759703	0.0091759
EARTH	2108-10-01 09:07	> 1 d	0.1460434	0.0532484	0.0309736
EARTH	2109-02-23 22:07	> 1 d	0.1675554	0.1673159	0.0012641
EARTH	2120-02-17 06:37	> 1 d	0.1995349	0.1747916	0.0369577

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
307.76489206	258.86086205	0.01611965	MINIMUM
83.19012258	52.17159527	0.16643666	MINIMUM
23.04481796	346.41994940	0.24242770	SADDLE
193.57622989	149.23927552	0.42726895	SADDLE
0.26031029	139.05320042	1.94174857	SADDLE
173.06890576	311.57916809	2.32128031	MAXIMUM

Download:

MOID Plots

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