Asteroids

2025YS3 help

Last update: 2025-12-22 15:15 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.616

Aphelion (Q)

1.319

Eccentricity (e)

0.363

Inclination (i)

18.7

deg

Orbit period (P)

347.7

Earth MOID

0.00897

U parameter

7.3

Next Earth close approach

Date

2044-12-25

Nominal distance (from Earth center)

0.13739

20553188

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

10 - 23*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-12-21

Observatory

MARGO, Nauchnyi

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

0.967682

1-sigma variation

0.000171

Unit

Eccentricity (e)

Value

0.363391

1-sigma variation

0.000273

Unit

Inclination (i)

Value

18.7022

1-sigma variation

0.0179

Unit

Long. of Ascending Node (Ω)

Value

90.5149

1-sigma variation

0.0002

Unit

Arg. of Perihelion (ω)

Value

244.1342

1-sigma variation

0.0114

Unit

Mean Anomaly (M)

Value

41.43551

1-sigma variation

0.03836

Unit

Perihelion distance

Value

0.616034

1-sigma variation

Unit

Aphelion distance

Value

1.319329

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.014229

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.292846

1-sigma variation

Unit

MOID

Value

0.008968

1-sigma variation

Unit

Orbit Period

Value

347.6940

1-sigma variation

Unit

U parameter

Value

7.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.91468E-8	4.66091E-8	3.05784E-6	-3.32529E-8	1.93901E-6	-6.54826E-6
e	4.66091E-8	7.46340E-8	4.88651E-6	-5.31393E-8	3.09598E-6	-1.04786E-5
i	3.05784E-6	4.88651E-6	3.21365E-4	-3.49494E-6	2.03551E-4	-6.86713E-4
Ω	-3.32529E-8	-5.31393E-8	-3.49494E-6	3.80145E-8	-2.21354E-6	7.46778E-6
ω	1.93901E-6	3.09598E-6	2.03551E-4	-2.21354E-6	1.29218E-4	-4.35290E-4
M	-6.54826E-6	-1.04786E-5	-6.86713E-4	7.46778E-6	-4.35290E-4	1.47168E-3

Date of computation: 2025-12-22 15:15 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

27.024

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

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

[-]

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

0.7

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.704985

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-12-21.8682

Unit

Source

[2]

Last Observation

Value

2025-12-22.558153

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

26 (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 2025YS3 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	1966-12-26 14:43	880.4	0.1706884	0.1114938	0.0197415
EARTH	1967-12-20 13:55	466.0	0.1303178	0.0623385	0.0228715
EARTH	1986-12-20 11:24	1342.2	0.0539965	0.0098369	0.0698897
EARTH	2005-12-21 21:14	1084.9	0.0293520	0.0094806	0.0276210
EARTH	2025-12-21 06:44	< 1 min	0.0090183	0.0089946	0.0000079
VENUS	2035-03-21 02:37	> 1 d	0.0178981	0.0083034	0.0167502
EARTH	2044-12-25 06:50	> 1 d	0.1373896	0.0115411	0.0424960
VENUS	2045-09-02 04:33	> 1 d	0.0479759	0.0092209	0.0549817
EARTH	2045-12-21 00:34	> 1 d	0.1644740	0.0331347	0.0448745
EARTH	2063-12-24 21:13	> 1 d	0.0987560	0.0072026	0.0363858
EARTH	2082-12-24 04:40	668.6	0.0837839	0.0379544	0.0153306
EARTH	2101-12-28 00:45	> 1 d	0.1749172	0.0784798	0.0321810
EARTH	2102-12-21 11:56	273.8	0.1222065	0.0314117	0.0305280
EARTH	2121-12-23 13:33	178.8	0.0363129	0.0179908	0.0061822

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
93.56660424	348.20836273	0.00896800	MINIMUM
285.01863755	137.34195119	0.21283448	MINIMUM
7.19635786	244.57884077	0.46143997	SADDLE
191.45351468	59.56826871	0.47599117	SADDLE
0.40011085	54.05372229	1.59007610	SADDLE
175.56162666	228.38013547	2.30733527	MAXIMUM

Download:

MOID Plots

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