Asteroids

2025QB4 help

Last update: 2025-08-25 13:30 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.876

Aphelion (Q)

3.604

Eccentricity (e)

0.609

Inclination (i)

5.4

deg

Orbit period (P)

1224.7

Earth MOID

0.00331

U parameter

7.3

Next Earth close approach

Date

2062-05-02

Nominal distance (from Earth center)

0.11267

16855294

Maximum Brightness

26.1

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

28.1

mag

Diameter

6 - 14*

Taxonomic type

Rotation period (T)

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

2.240209

1-sigma variation

0.001473

Unit

Eccentricity (e)

Value

0.608818

1-sigma variation

0.000276

Unit

Inclination (i)

Value

5.4003

1-sigma variation

0.0017

Unit

Long. of Ascending Node (Ω)

Value

150.5186

1-sigma variation

1.632E-5

Unit

Arg. of Perihelion (ω)

Value

128.0669

1-sigma variation

0.0018

Unit

Mean Anomaly (M)

Value

37.41753

1-sigma variation

0.03806

Unit

Perihelion distance

Value

0.876329

1-sigma variation

Unit

Aphelion distance

Value

3.604089

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.268155

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.012994

1-sigma variation

Unit

MOID

Value

0.003310

1-sigma variation

Unit

Orbit Period

Value

1224.7044

1-sigma variation

Unit

U parameter

Value

7.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.16965E-6	4.06707E-7	2.53193E-6	2.17515E-8	-1.32587E-6	-5.60582E-5
e	4.06707E-7	7.62558E-8	4.73906E-7	4.05576E-9	-2.55047E-7	-1.05073E-5
i	2.53193E-6	4.73906E-7	2.98890E-6	2.62899E-8	-1.28229E-6	-6.54567E-5
Ω	2.17515E-8	4.05576E-9	2.62899E-8	2.66234E-10	-5.25565E-9	-5.63164E-7
ω	-1.32587E-6	-2.55047E-7	-1.28229E-6	-5.25565E-9	3.24018E-6	3.39067E-5
M	-5.60582E-5	-1.05073E-5	-6.54567E-5	-5.63164E-7	3.39067E-5	1.44845E-3

Date of computation: 2025-08-25 13:30 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

28.137

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

6 - 14*

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

0.744327

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-08-23.260675

Unit

Source

[2]

Last Observation

Value

2025-08-24.289099

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

34 (5)

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 2025QB4 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	1972-08-29 12:40	> 1 w	0.0978759	0.0056199	0.2611917
EARTH	1982-06-23 03:54	> 1 mo	0.1645059	0.1609085	0.0103462
EARTH	2025-08-22 01:25	< 1 min	0.0051375	0.0051318	0.0000019
EARTH	2062-05-02 20:54	> 1 w	0.1126707	0.0955448	0.1175094
EARTH	2072-05-19 12:34	> 1 mo	0.1165991	0.0968023	0.1269840
EARTH	2082-07-15 08:53	> 1 mo	0.1476372	0.0725446	0.1071220
EARTH	2092-08-09 21:27	> 1 mo	0.0901895	0.0126308	0.2778666
EARTH	2102-08-30 08:23	> 1 w	0.0589866	0.0043237	0.2139943

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
25.89751139	228.01861137	0.00331026	MINIMUM
334.19096309	126.59239225	0.09327834	MINIMUM
357.92233408	173.04743076	0.15901254	SADDLE
359.90214852	357.15017172	1.85861678	SADDLE
179.89562377	357.36520269	2.62424019	SADDLE
180.08706566	177.45966435	4.62006105	MAXIMUM

Download:

MOID Plots

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