Asteroids

2025UF4 help

Last update: 2025-10-28 14:00 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.977

Aphelion (Q)

2.656

Eccentricity (e)

0.462

Inclination (i)

12.1

deg

Orbit period (P)

894.3

Earth MOID

0.03771

U parameter

8.5

Next Earth close approach

Date

2025-10-30

Nominal distance (from Earth center)

0.03907

5845334

Maximum Brightness

18.1

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

23.4

mag

Diameter

60 - 130*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-10-21

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

1.816529

1-sigma variation

0.005370

Unit

Eccentricity (e)

Value

0.461945

1-sigma variation

0.001610

Unit

Inclination (i)

Value

12.1029

1-sigma variation

0.0304

Unit

Long. of Ascending Node (Ω)

Value

224.8313

1-sigma variation

0.0032

Unit

Arg. of Perihelion (ω)

Value

143.0649

1-sigma variation

0.0053

Unit

Mean Anomaly (M)

Value

18.54738

1-sigma variation

0.08653

Unit

Perihelion distance

Value

0.977392

1-sigma variation

Unit

Aphelion distance

Value

2.655665

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.254939

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.052526

1-sigma variation

Unit

MOID

Value

0.037709

1-sigma variation

Unit

Orbit Period

Value

894.2559

1-sigma variation

Unit

U parameter

Value

8.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.88414E-5	8.64480E-6	1.63170E-4	1.69714E-5	-2.85833E-5	-4.64709E-4
e	8.64480E-6	2.59116E-6	4.89078E-5	5.08700E-6	-8.56756E-6	-1.39290E-4
i	1.63170E-4	4.89078E-5	9.23150E-4	9.59823E-5	-1.61648E-4	-2.62909E-3
Ω	1.69714E-5	5.08700E-6	9.59823E-5	1.00395E-5	-1.69202E-5	-2.73438E-4
ω	-2.85833E-5	-8.56756E-6	-1.61648E-4	-1.69202E-5	2.85304E-5	4.60518E-4
M	-4.64709E-4	-1.39290E-4	-2.62909E-3	-2.73438E-4	4.60518E-4	7.48767E-3

Date of computation: 2025-10-28 14:00 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

23.35

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

60 - 130*

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

0.519671

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-10-21.111381

Unit

Source

[2]

Last Observation

Value

2025-10-27.76096

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

41 (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 2025UF4 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	1954-10-22 22:44	> 1 mo	0.0755916	0.0308101	0.4580907
EARTH	1976-11-11 09:24	> 1 mo	0.1347328	0.0284764	1.1561372
EARTH	2003-09-11 07:01	> 1 mo	0.1966065	0.1420154	0.3273450
EARTH	2025-10-30 12:51	< 1 min	0.0390736	0.0387370	0.0001122
EARTH	2047-11-16 01:03	> 1 mo	0.1865823	0.0200164	0.5989494
EARTH	2074-09-21 01:21	> 1 mo	0.1781509	0.1042214	0.5337407
EARTH	2096-10-28 14:08	> 1 mo	0.0439316	0.0350166	0.5447376
EARTH	2118-11-06 02:06	> 1 mo	0.0512551	0.0339092	2.5517768

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
18.55629072	297.73981559	0.03770886	MINIMUM
177.87896201	85.55213071	1.66915981	SADDLE
356.84233177	83.04070483	1.97220430	SADDLE
179.93325807	266.79010543	3.65147145	MAXIMUM

Download:

MOID Plots

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