Asteroids

2025YU6 help

Last update: 2026-01-15 13:31 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.951

Aphelion (Q)

1.503

Eccentricity (e)

0.225

Inclination (i)

1.4

deg

Orbit period (P)

496.6

Earth MOID

0.00524

U parameter

5.9

Next Earth close approach

Date

2030-04-03

Nominal distance (from Earth center)

0.02537

3794593

Maximum Brightness

21.1

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

17 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-12-26

Observatory

Pan-STARRS 2, 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

1.227213

1-sigma variation

0.000039

Unit

Eccentricity (e)

Value

0.224825

1-sigma variation

0.000028

Unit

Inclination (i)

Value

1.4324

1-sigma variation

0.0002

Unit

Long. of Ascending Node (Ω)

Value

305.8873

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

202.4814

1-sigma variation

0.0006

Unit

Mean Anomaly (M)

Value

299.24064

1-sigma variation

0.00291

Unit

Perihelion distance

Value

0.951305

1-sigma variation

Unit

Aphelion distance

Value

1.503120

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.454426

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.020417

1-sigma variation

Unit

MOID

Value

0.005239

1-sigma variation

Unit

Orbit Period

Value

496.5674

1-sigma variation

Unit

U parameter

Value

5.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.51910E-9	1.09717E-9	6.54104E-9	1.73932E-9	2.11478E-8	1.13283E-7
e	1.09717E-9	7.92433E-10	4.72446E-9	1.25349E-9	1.52795E-8	8.18166E-8
i	6.54104E-9	4.72446E-9	2.81837E-8	7.22135E-9	9.14474E-8	4.87710E-7
Ω	1.73932E-9	1.25349E-9	7.22135E-9	6.27934E-9	1.83628E-8	1.30625E-7
ω	2.11478E-8	1.52795E-8	9.14474E-8	1.83628E-8	3.03442E-7	1.57517E-6
M	1.13283E-7	8.18166E-8	4.87710E-7	1.30625E-7	1.57517E-6	8.44830E-6

Date of computation: 2026-01-15 13:31 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

25.987

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

0.561042

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-12-17.290702

Unit

Source

[2]

Last Observation

Value

2026-01-14.551819

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

70 (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 2025YU6 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	1954-01-21 11:59	> 1 w	0.0163810	0.0076371	0.0183785
EARTH	1973-03-01 18:38	> 1 w	0.0380876	0.0343337	0.0025694
EARTH	1992-03-27 20:39	601.8	0.0227837	0.0223907	0.0001973
EARTH	2006-12-23 23:13	259.9	0.1942933	0.1819953	0.0040996
EARTH	2011-04-16 10:07	466.4	0.1062818	0.0937160	0.0042038
EARTH	2026-01-11 21:26	< 1 min	0.0106027	0.0105988	0.0000013
EARTH	2030-04-03 19:17	454.2	0.0253653	0.0248368	0.0002418
EARTH	2061-01-30 00:06	> 1 w	0.0281360	0.0070386	0.0177650
EARTH	2065-04-22 20:28	> 1 d	0.1753477	0.0540877	0.0415293
EARTH	2088-02-01 13:50	> 1 mo	0.0298715	0.0080384	0.2037235
EARTH	2111-01-19 20:38	> 1 mo	0.0106825	0.0034291	2.5682975
EARTH	2126-02-09 19:03	> 1 mo	0.0345238	0.0160119	60.5238086

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
332.35163471	12.47577876	0.00523857	MINIMUM
33.67468971	87.71706802	0.02263354	MINIMUM
5.31321201	52.90542143	0.03972567	SADDLE
182.31627048	229.40196184	0.49096539	SADDLE
3.56888050	230.72152093	1.96343746	SADDLE
182.11905452	49.23250286	2.49231149	MAXIMUM

Download:

MOID Plots

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