Asteroids

2026AW4 help

Last update: 2026-01-23 12:45 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.761

Aphelion (Q)

3.526

Eccentricity (e)

0.645

Inclination (i)

1.7

deg

Orbit period (P)

1146.0

Earth MOID

0.00021

U parameter

8.3

Next Earth close approach

Date

2029-06-01

Nominal distance (from Earth center)

0.07871

11774929

Maximum Brightness

23.5

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.1

mag

Diameter

26 - 60*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-01-14

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

2.143162

1-sigma variation

0.004904

Unit

Eccentricity (e)

Value

0.645132

1-sigma variation

0.000894

Unit

Inclination (i)

Value

1.7344

1-sigma variation

0.0018

Unit

Long. of Ascending Node (Ω)

Value

304.3730

1-sigma variation

0.0031

Unit

Arg. of Perihelion (ω)

Value

244.8828

1-sigma variation

0.0019

Unit

Mean Anomaly (M)

Value

327.62219

1-sigma variation

0.11733

Unit

Perihelion distance

Value

0.760539

1-sigma variation

Unit

Aphelion distance

Value

3.525784

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.708157

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.003277

1-sigma variation

Unit

MOID

Value

0.000213

1-sigma variation

Unit

Orbit Period

Value

1145.9899

1-sigma variation

Unit

U parameter

Value

8.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.40526E-5	4.38675E-6	9.06396E-6	1.50983E-5	-9.23071E-6	5.75410E-4
e	4.38675E-6	8.00063E-7	1.65311E-6	2.75364E-6	-1.68334E-6	1.04944E-4
i	9.06396E-6	1.65311E-6	3.41642E-6	5.68708E-6	-3.47436E-6	2.16837E-4
Ω	1.50983E-5	2.75364E-6	5.68708E-6	9.48755E-6	-5.80597E-6	3.61196E-4
ω	-9.23071E-6	-1.68334E-6	-3.47436E-6	-5.80597E-6	3.60713E-6	-2.20831E-4
M	5.75410E-4	1.04944E-4	2.16837E-4	3.61196E-4	-2.20831E-4	1.37655E-2

Date of computation: 2026-01-23 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

25.06

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

26 - 60*

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

0.486241

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-01-13.416919

Unit

Source

[2]

Last Observation

Value

2026-01-21.541429

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

41 (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 2026AW4 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	1954-01-16 15:09	> 1 w	0.1007789	0.0036717	0.3346627
EARTH	1957-05-25 10:34	> 1 mo	0.1201002	0.0251981	0.2895180
EARTH	1979-02-20 12:17	> 1 mo	0.1800396	0.0135937	0.2412770
EARTH	1982-06-18 14:37	> 1 w	0.1326153	0.0247267	0.4015389
EARTH	2026-01-21 06:02	< 1 s	0.0418948	0.0417421	0.0000509
EARTH	2029-06-01 18:39	> 1 w	0.0787105	0.0220086	0.0583952
EARTH	2051-01-20 14:12	> 1 mo	0.0370867	0.0008283	0.7033977
EARTH	2104-02-12 17:17	> 1 mo	0.1400473	0.0004164	11.9075578
EARTH	2107-06-17 00:27	> 1 mo	0.0417387	0.0161737	14.5068204
MARS	2110-09-05 19:32	> 1 mo	0.0400622	0.0386393	1.8132822
MARS	2122-08-30 04:07	> 1 mo	0.0126188	0.0058588	15.8547519

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
326.90616235	22.35645397	0.00021304	MINIMUM
35.49479630	156.71721169	0.02220424	MINIMUM
1.63863796	90.16474994	0.24110496	SADDLE
1.55701600	269.98901026	1.76139159	SADDLE
180.34257902	268.38059601	2.52504788	SADDLE
180.32764404	88.37337956	4.52564009	MAXIMUM

Download:

MOID Plots

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