Asteroids

2025YB5 help

Last update: 2026-02-02 12:45 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.809

Aphelion (Q)

4.119

Eccentricity (e)

0.672

Inclination (i)

2.9

deg

Orbit period (P)

1412.9

Earth MOID

0.00703

U parameter

8.2

Next Earth close approach

Date

2029-08-12

Nominal distance (from Earth center)

0.06844

10239213

Maximum Brightness

23.2

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

2025-12-22

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

2.464161

1-sigma variation

0.007286

Unit

Eccentricity (e)

Value

0.671756

1-sigma variation

0.001034

Unit

Inclination (i)

Value

2.9264

1-sigma variation

0.0035

Unit

Long. of Ascending Node (Ω)

Value

269.7843

1-sigma variation

0.0014

Unit

Arg. of Perihelion (ω)

Value

115.7450

1-sigma variation

0.0006

Unit

Mean Anomaly (M)

Value

3.09520

1-sigma variation

0.01815

Unit

Perihelion distance

Value

0.808847

1-sigma variation

Unit

Aphelion distance

Value

4.119474

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.889758

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.063410

1-sigma variation

Unit

MOID

Value

0.007028

1-sigma variation

Unit

Orbit Period

Value

1412.8692

1-sigma variation

Unit

U parameter

Value

8.2

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	5.30903E-5	7.53428E-6	2.52928E-5	-1.01856E-5	-3.60575E-6	-1.32216E-4
e	7.53428E-6	1.06922E-6	3.58941E-6	-1.44547E-6	-5.11963E-7	-1.87634E-5
i	2.52928E-5	3.58941E-6	1.20500E-5	-4.85214E-6	-1.71889E-6	-6.29891E-5
Ω	-1.01856E-5	-1.44547E-6	-4.85214E-6	1.95643E-6	6.87294E-7	2.53663E-5
ω	-3.60575E-6	-5.11963E-7	-1.71889E-6	6.87294E-7	3.14873E-7	8.97655E-6
M	-1.32216E-4	-1.87634E-5	-6.29891E-5	2.53663E-5	8.97655E-6	3.29272E-4

Date of computation: 2026-02-02 12:45 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

26.269

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

0.320907

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-12-22.180832

Unit

Source

[2]

Last Observation

Value

2026-01-12.507958

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

20 (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 2025YB5 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	1951-09-25 22:58	> 1 mo	0.1131519	0.0448869	5.6593586
EARTH	1955-08-15 07:10	> 1 mo	0.1627271	0.0407790	15.2858190
EARTH	1994-12-14 14:07	> 1 mo	0.0319107	0.0100563	1.2677766
EARTH	1998-08-17 12:32	> 1 mo	0.0519098	0.0425592	0.5356785
EARTH	2025-12-16 16:03	< 1 min	0.0304564	0.0303318	0.0000415
EARTH	2029-08-12 22:24	> 1 w	0.0684449	0.0425056	0.0819800
EARTH	2056-11-10 03:20	> 1 mo	0.1670250	0.0163325	0.2531516
EARTH	2087-12-02 05:13	> 1 mo	0.0837013	0.0049459	0.4265322
EARTH	2091-08-11 01:10	> 1 w	0.1383062	0.0450109	0.3421470

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
26.69817879	340.90078392	0.00702782	MINIMUM
331.08779578	224.49715055	0.04263033	MINIMUM
358.35989490	281.74809240	0.19259988	SADDLE
358.64082501	102.38843317	1.81306338	SADDLE
179.72071311	103.89631564	3.11595840	SADDLE
179.75580543	283.91384372	5.11512641	MAXIMUM

Download:

MOID Plots

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