Asteroids

2025YA3 help

Last update: 2025-12-23 13:16 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.542

Aphelion (Q)

4.475

Eccentricity (e)

0.784

Inclination (i)

11.5

deg

Orbit period (P)

1451.5

Earth MOID

0.00495

U parameter

7.9

Next Earth close approach

Date

2041-06-17

Nominal distance (from Earth center)

0.09999

14958966

Maximum Brightness

24.4

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.3

mag

Diameter

15 - 30*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-12-20

Observatory

Catalina Sky 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

2.508844

1-sigma variation

0.004873

Unit

Eccentricity (e)

Value

0.783832

1-sigma variation

0.000478

Unit

Inclination (i)

Value

11.5096

1-sigma variation

0.0069

Unit

Long. of Ascending Node (Ω)

Value

86.3053

1-sigma variation

0.0002

Unit

Arg. of Perihelion (ω)

Value

270.2408

1-sigma variation

0.0009

Unit

Mean Anomaly (M)

Value

3.71645

1-sigma variation

0.01442

Unit

Perihelion distance

Value

0.542331

1-sigma variation

Unit

Aphelion distance

Value

4.475356

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.020071

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.046715

1-sigma variation

Unit

MOID

Value

0.004946

1-sigma variation

Unit

Orbit Period

Value

1451.4727

1-sigma variation

Unit

U parameter

Value

7.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.37451E-5	2.33048E-6	3.34835E-5	6.84229E-7	3.06851E-6	-7.02587E-5
e	2.33048E-6	2.28733E-7	3.28581E-6	6.68790E-8	2.99484E-7	-6.89558E-6
i	3.34835E-5	3.28581E-6	4.72641E-5	9.88951E-7	4.43558E-6	-9.90739E-5
Ω	6.84229E-7	6.68790E-8	9.88951E-7	3.30126E-8	1.56447E-7	-2.02495E-6
ω	3.06851E-6	2.99484E-7	4.43558E-6	1.56447E-7	8.22847E-7	-9.08129E-6
M	-7.02587E-5	-6.89558E-6	-9.90739E-5	-2.02495E-6	-9.08129E-6	2.07886E-4

Date of computation: 2025-12-23 13:16 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

26.29

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

15 - 30*

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

0.666039

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-12-20.263327

Unit

Source

[2]

Last Observation

Value

2025-12-21.971814

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

41 (3)

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 2025YA3 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	1965-06-21 03:10	> 1 mo	0.0253983	0.0122027	0.4595753
EARTH	1985-12-10 07:06	> 1 w	0.0999864	0.0242059	0.3944357
EARTH	1989-12-21 18:19	> 1 w	0.1160020	0.0235121	0.4941226
EARTH	2021-12-28 02:32	> 1 d	0.1615112	0.0074626	0.0728528
EARTH	2025-12-19 11:23	< 1 min	0.0062028	0.0061915	0.0000037
EARTH	2041-06-17 04:04	> 1 w	0.0999945	0.0078533	0.2640661
EARTH	2068-12-22 05:09	> 1 w	0.0583555	0.0464566	0.1270088
EARTH	2096-01-03 22:13	> 1 d	0.1842432	0.0521157	0.1069617
EARTH	2122-12-30 05:49	> 1 w	0.0847081	0.0568110	0.1602016

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
39.10321786	346.58902759	0.00494583	MINIMUM
319.45316147	161.59644482	0.01143639	MINIMUM
358.72578250	253.30501369	0.48618457	SADDLE
358.66032806	73.09327981	1.53124693	SADDLE
179.83132295	74.96679486	3.50476337	SADDLE
179.82955827	254.96421003	5.46399272	MAXIMUM

Download:

MOID Plots

Click on the images to zoom-in and zoom-out