Asteroids

2025RX4 help

Last update: 2025-09-26 13:16 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.924

Aphelion (Q)

3.190

Eccentricity (e)

0.551

Inclination (i)

2.6

deg

Orbit period (P)

1077.8

Earth MOID

0.00358

U parameter

7.3

Next Earth close approach

Date

2084-11-19

Nominal distance (from Earth center)

0.06186

9253535

Maximum Brightness

24.8

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

24.6

mag

Diameter

30 - 70*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-09-15

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

2.057273

1-sigma variation

0.001162

Unit

Eccentricity (e)

Value

0.550723

1-sigma variation

0.000267

Unit

Inclination (i)

Value

2.6167

1-sigma variation

0.0011

Unit

Long. of Ascending Node (Ω)

Value

356.4675

1-sigma variation

0.0002

Unit

Arg. of Perihelion (ω)

Value

43.5416

1-sigma variation

0.0007

Unit

Mean Anomaly (M)

Value

9.19678

1-sigma variation

0.00687

Unit

Perihelion distance

Value

0.924285

1-sigma variation

Unit

Aphelion distance

Value

3.190261

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.019394

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

1.389401

1-sigma variation

Unit

MOID

Value

0.003579

1-sigma variation

Unit

Orbit Period

Value

1077.7953

1-sigma variation

Unit

U parameter

Value

7.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.35032E-6	3.10176E-7	1.27132E-6	-2.53783E-7	8.09974E-7	-7.98338E-6
e	3.10176E-7	7.12492E-8	2.92029E-7	-5.82956E-8	1.86057E-7	-1.83383E-6
i	1.27132E-6	2.92029E-7	1.19700E-6	-2.38908E-7	7.62665E-7	-7.51633E-6
Ω	-2.53783E-7	-5.82956E-8	-2.38908E-7	4.78009E-8	-1.52388E-7	1.50043E-6
ω	8.09974E-7	1.86057E-7	7.62665E-7	-1.52388E-7	4.86864E-7	-4.78893E-6
M	-7.98338E-6	-1.83383E-6	-7.51633E-6	1.50043E-6	-4.78893E-6	4.71995E-5

Date of computation: 2025-09-26 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

24.6

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

30 - 70*

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

0.60959

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-09-15.226625

Unit

Source

[2]

Last Observation

Value

2025-09-25.15581

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

74 (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 2025RX4 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	1952-12-10 16:24	> 1 mo	0.0483432	0.0464566	0.1415722
EARTH	1955-09-04 11:53	> 1 mo	0.1574534	0.0044858	0.6039210
MARS	1970-09-07 14:01	> 1 mo	0.0199907	0.0100945	0.3976281
EARTH	1987-12-05 15:21	> 1 w	0.0475702	0.0460034	0.0335768
EARTH	1990-09-02 17:37	> 1 w	0.1896851	0.0036296	0.1632343
EARTH	2022-12-26 01:33	> 1 d	0.1808235	0.1355721	0.0152754
EARTH	2025-09-25 09:03	< 1 s	0.0072521	0.0072424	0.0000032
EARTH	2084-11-19 02:33	> 1 mo	0.0618561	0.0474220	0.0727916
EARTH	2087-09-14 23:55	> 1 w	0.0867078	0.0051834	0.2165396

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
338.32315337	260.51428023	0.00357944	MINIMUM
18.44610802	332.72459204	0.04395771	MINIMUM
359.90645291	299.43099402	0.07441638	SADDLE
358.58684104	117.01620003	1.93288257	SADDLE
179.62361242	118.19846812	2.18200658	SADDLE
179.56659769	298.17219124	4.18238778	MAXIMUM

Download:

MOID Plots

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