Asteroids

2026CX4 help

Last update: 2026-02-23 13:15 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.803

Aphelion (Q)

2.357

Eccentricity (e)

0.492

Inclination (i)

0.7

deg

Orbit period (P)

725.4

Earth MOID

0.00138

U parameter

8.2

Next Earth close approach

Date

2026-03-03

Nominal distance (from Earth center)

0.0195

2916869

Maximum Brightness

19.7

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

24.5

mag

Diameter

30 - 70*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-02-11

Observatory

Crimea-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

1.580004

1-sigma variation

0.002138

Unit

Eccentricity (e)

Value

0.491797

1-sigma variation

0.000849

Unit

Inclination (i)

Value

0.6543

1-sigma variation

0.0013

Unit

Long. of Ascending Node (Ω)

Value

108.2339

1-sigma variation

0.0229

Unit

Arg. of Perihelion (ω)

Value

117.7014

1-sigma variation

0.0174

Unit

Mean Anomaly (M)

Value

287.03730

1-sigma variation

0.15735

Unit

Perihelion distance

Value

0.802963

1-sigma variation

Unit

Aphelion distance

Value

2.357045

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.573025

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.044574

1-sigma variation

Unit

MOID

Value

0.001382

1-sigma variation

Unit

Orbit Period

Value

725.4135

1-sigma variation

Unit

U parameter

Value

8.2

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.56892E-6	1.81520E-6	2.71327E-6	4.50921E-5	-3.27063E-5	3.36341E-4
e	1.81520E-6	7.21174E-7	1.07821E-6	1.79286E-5	-1.30059E-5	1.33626E-4
i	2.71327E-6	1.07821E-6	1.63356E-6	2.81145E-5	-2.06369E-5	1.99688E-4
Ω	4.50921E-5	1.79286E-5	2.81145E-5	5.26160E-4	-3.96921E-4	3.31663E-3
ω	-3.27063E-5	-1.30059E-5	-2.06369E-5	-3.96921E-4	3.02113E-4	-2.40518E-3
M	3.36341E-4	1.33626E-4	1.99688E-4	3.31663E-3	-2.40518E-3	2.47599E-2

Date of computation: 2026-02-23 13:15 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

24.526

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

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

0.6

Unit

Source

[1]

Normalized RMS of residuals

Value

0.559635

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-02-11.90124

Unit

Source

[2]

Last Observation

Value

2026-02-23.27382

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

54 (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 2026CX4 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
7 Iris	1955-06-17 19:58	> 1 mo	0.0041202	0.0029214	3869.5468746
EARTH	1973-07-17 18:15	> 1 mo	0.0118906	0.0013043	191.3681111
EARTH	1977-03-19 19:06	> 1 mo	0.1310829	0.0101427	112.6658870
EARTH	1979-02-16 04:05	> 1 mo	0.1837278	0.0104561	141.8454991
MARS	2006-02-28 15:50	> 1 mo	0.0468930	0.0438288	3.5606268
EARTH	2010-07-17 16:50	> 1 w	0.0028268	0.0013313	0.1201684
EARTH	2012-07-07 16:25	> 1 w	0.0806662	0.0017681	0.1307420
EARTH	2014-06-20 11:00	> 1 mo	0.1495458	0.0047938	0.0815742
EARTH	2016-05-30 03:32	> 1 mo	0.1918233	0.0960780	0.0320061
EARTH	2020-04-23 21:37	> 1 w	0.1986355	0.1562906	0.0141390
EARTH	2022-04-03 22:55	> 1 w	0.1643165	0.0890044	0.0251463
EARTH	2024-03-14 20:29	> 1 d	0.1031252	0.0392422	0.0214290
EARTH	2026-03-03 13:51	< 1 min	0.0194981	0.0194014	0.0000322
EARTH	2028-02-27 06:36	> 1 d	0.0402569	0.0090325	0.0247138
EARTH	2030-02-21 14:38	> 1 d	0.1176350	0.0095135	0.0379590
7 Iris	2073-06-12 00:21	329.5	0.0170810	0.0154625	0.0692073

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
43.63615923	193.75593482	0.00138220	MINIMUM
319.17654621	58.73621954	0.00901710	MINIMUM
1.74569453	126.62487776	0.20807242	SADDLE
180.59781614	305.32445339	1.36629948	SADDLE
1.73379980	306.62495774	1.79361235	SADDLE
180.61555061	125.34160258	3.36769082	MAXIMUM

Download:

MOID Plots

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