Asteroids

2025UK11 help

Last update: 2025-11-24 19:20 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.890

Aphelion (Q)

3.863

Eccentricity (e)

0.625

Inclination (i)

7.6

deg

Orbit period (P)

1338.0

Earth MOID

0.02292

U parameter

7.9

Next Earth close approach

Date

2036-10-11

Nominal distance (from Earth center)

0.06649

9946568

Maximum Brightness

24.3

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.9

mag

Diameter

17 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-10-29

Observatory

Mt. Lemmon Survey

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

2.376360

1-sigma variation

0.004479

Unit

Eccentricity (e)

Value

0.625419

1-sigma variation

0.000737

Unit

Inclination (i)

Value

7.6226

1-sigma variation

0.0064

Unit

Long. of Ascending Node (Ω)

Value

214.8885

1-sigma variation

0.0010

Unit

Arg. of Perihelion (ω)

Value

125.4936

1-sigma variation

0.0007

Unit

Mean Anomaly (M)

Value

17.11422

1-sigma variation

0.05099

Unit

Perihelion distance

Value

0.890139

1-sigma variation

Unit

Aphelion distance

Value

3.862580

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.263752

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.067857

1-sigma variation

Unit

MOID

Value

0.022922

1-sigma variation

Unit

Orbit Period

Value

1338.0324

1-sigma variation

Unit

U parameter

Value

7.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.00590E-5	3.29879E-6	2.86083E-5	-4.58994E-6	-3.04710E-6	-2.28369E-4
e	3.29879E-6	5.42502E-7	4.70478E-6	-7.54827E-7	-5.01406E-7	-3.75563E-5
i	2.86083E-5	4.70478E-6	4.08020E-5	-6.54606E-6	-4.34879E-6	-3.25702E-4
Ω	-4.58994E-6	-7.54827E-7	-6.54606E-6	1.05055E-6	6.94314E-7	5.22562E-5
ω	-3.04710E-6	-5.01406E-7	-4.34879E-6	6.94314E-7	5.53296E-7	3.46816E-5
M	-2.28369E-4	-3.75563E-5	-3.25702E-4	5.22562E-5	3.46816E-5	2.59995E-3

Date of computation: 2025-11-24 19:20 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

25.944

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

17 - 40*

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

[-]

Download this part as:

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

0.473077

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-10-29.201323

Unit

Source

[2]

Last Observation

Value

2025-11-16.410754

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

33 (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 2025UK11 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	1963-09-24 14:26	> 1 mo	0.1340117	0.0093446	0.4534968
EARTH	1974-07-21 21:07	> 1 mo	0.1355680	0.1275816	0.1642043
EARTH	1985-07-01 17:28	> 1 mo	0.1695240	0.1295600	0.3425844
EARTH	2025-10-22 15:43	< 1 min	0.0406772	0.0405590	0.0000394
EARTH	2036-10-11 02:44	> 1 w	0.0664887	0.0128553	0.1575011
EARTH	2047-07-23 10:42	> 1 mo	0.1455544	0.1358368	0.0545695
EARTH	2098-11-01 07:30	> 1 w	0.1149054	0.0031093	0.3578474
EARTH	2109-09-10 01:35	> 1 mo	0.1598554	0.1062550	0.0444857
EARTH	2120-08-06 13:06	> 1 w	0.1568081	0.1506624	0.0074429

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
22.63621040	285.37234367	0.02292229	MINIMUM
335.77523217	190.98145025	0.13219373	MINIMUM
354.39891282	228.46737971	0.16328826	SADDLE
358.53554854	57.18626405	1.87892676	SADDLE
179.52461716	58.86532907	2.87854226	SADDLE
179.84690142	239.01621162	4.86751141	MAXIMUM

Download:

MOID Plots

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