Asteroids

2025US11 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.961

Aphelion (Q)

2.479

Eccentricity (e)

0.441

Inclination (i)

3.1

deg

Orbit period (P)

823.9

Earth MOID

0.00404

U parameter

8.0

Next Earth close approach

Date

2034-11-26

Nominal distance (from Earth center)

0.00951

1422178

Maximum Brightness

19.5

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

2025-10-30

Observatory

Pan-STARRS 1, 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

1.719975

1-sigma variation

0.001915

Unit

Eccentricity (e)

Value

0.441345

1-sigma variation

0.000634

Unit

Inclination (i)

Value

3.0910

1-sigma variation

0.0034

Unit

Long. of Ascending Node (Ω)

Value

56.1652

1-sigma variation

0.0024

Unit

Arg. of Perihelion (ω)

Value

28.9632

1-sigma variation

0.0017

Unit

Mean Anomaly (M)

Value

351.52135

1-sigma variation

0.01712

Unit

Perihelion distance

Value

0.960873

1-sigma variation

Unit

Aphelion distance

Value

2.479078

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.010772

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

1.242532

1-sigma variation

Unit

MOID

Value

0.004045

1-sigma variation

Unit

Orbit Period

Value

823.9138

1-sigma variation

Unit

U parameter

Value

8.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.66877E-6	1.21410E-6	6.55358E-6	4.65536E-6	-3.15978E-6	3.27892E-5
e	1.21410E-6	4.01778E-7	2.16876E-6	1.54059E-6	-1.04563E-6	1.08508E-5
i	6.55358E-6	2.16876E-6	1.17069E-5	8.31532E-6	-5.64278E-6	5.85716E-5
Ω	4.65536E-6	1.54059E-6	8.31532E-6	5.91049E-6	-4.01431E-6	4.16073E-5
ω	-3.15978E-6	-1.04563E-6	-5.64278E-6	-4.01431E-6	2.74163E-6	-2.82452E-5
M	3.27892E-5	1.08508E-5	5.85716E-5	4.16073E-5	-2.82452E-5	2.93051E-4

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

26.021

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

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

0.44916

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-10-30.447956

Unit

Source

[2]

Last Observation

Value

2025-11-15.459381

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

27 (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 2025US11 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	1964-11-05 13:43	> 1 mo	0.0828105	0.0020170	0.3201822
EARTH	1973-12-11 08:10	> 1 mo	0.0304975	0.0142641	0.1096054
EARTH	1983-01-27 11:45	> 1 mo	0.1260241	0.0460975	0.4656939
MARS	2010-06-25 15:43	> 1 d	0.0291893	0.0282821	0.0288202
EARTH	2025-11-14 03:14	< 1 min	0.0324041	0.0322771	0.0000423
MARS	2033-01-22 17:48	> 1 d	0.0441031	0.0278360	0.0414220
EARTH	2034-11-26 08:10	> 1 w	0.0095067	0.0040100	0.0509606
EARTH	2068-12-28 14:41	> 1 mo	0.0368752	0.0365647	0.3144190
EARTH	2093-11-03 16:49	> 1 mo	0.1130781	0.0011400	17.2582901
EARTH	2103-01-31 01:12	> 1 mo	0.1361411	0.0455373	10.2635819
MARS	2110-03-03 02:49	> 1 mo	0.0314108	0.0240194	1.3460804

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
344.26273873	319.43298192	0.00404469	MINIMUM
179.86666865	163.59214901	1.46220671	SADDLE
359.45706856	163.22175644	1.97815200	SADDLE
179.73239020	343.51184853	3.46306948	MAXIMUM

Download:

MOID Plots

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