Asteroids

2026AW4 help

Last update: 2026-03-18 10:55 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.760

Aphelion (Q)

3.520

Eccentricity (e)

0.645

Inclination (i)

1.7

deg

Orbit period (P)

1143.4

Earth MOID

0.00017

U parameter

8.1

Next Earth close approach

Date

2029-05-31

Nominal distance (from Earth center)

0.08551

12791748

Maximum Brightness

23.7

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

2.139993

1-sigma variation

0.004412

Unit

Eccentricity (e)

Value

0.644686

1-sigma variation

0.000807

Unit

Inclination (i)

Value

1.7348

1-sigma variation

0.0017

Unit

Long. of Ascending Node (Ω)

Value

304.3679

1-sigma variation

0.0028

Unit

Arg. of Perihelion (ω)

Value

244.9305

1-sigma variation

0.0018

Unit

Mean Anomaly (M)

Value

30.50961

1-sigma variation

0.08874

Unit

Perihelion distance

Value

0.760370

1-sigma variation

Unit

Aphelion distance

Value

3.519616

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.705729

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.002538

1-sigma variation

Unit

MOID

Value

0.000166

1-sigma variation

Unit

Orbit Period

Value

1143.4495

1-sigma variation

Unit

U parameter

Value

8.1

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.94652E-5	3.55925E-6	7.33860E-6	1.23484E-5	-8.08933E-6	-3.91506E-4
e	3.55925E-6	6.50818E-7	1.34188E-6	2.25792E-6	-1.47899E-6	-7.15878E-5
i	7.33860E-6	1.34188E-6	2.76717E-6	4.65435E-6	-3.04720E-6	-1.47602E-4
Ω	1.23484E-5	2.25792E-6	4.65435E-6	7.83730E-6	-5.13743E-6	-2.48364E-4
ω	-8.08933E-6	-1.47899E-6	-3.04720E-6	-5.13743E-6	3.41470E-6	1.62697E-4
M	-3.91506E-4	-7.15878E-5	-1.47602E-4	-2.48364E-4	1.62697E-4	7.87442E-3

Date of computation: 2026-03-18 10:55 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

25.059

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

0.482629

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

42 (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

Note: Ephemerides requests are limited to a maximum of 1000 points and a final date not exceeding 2040/12/31 00:00.

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	1954-01-17 18:26	> 1 d	0.0833420	0.0131116	0.0234663
EARTH	1957-05-28 13:00	> 1 w	0.1015285	0.0249956	0.0642513
EARTH	1982-06-21 05:38	> 1 w	0.1756750	0.0245955	0.3279663
EARTH	2026-01-21 06:02	< 1 s	0.0418888	0.0417512	0.0000459
EARTH	2029-05-31 20:56	> 1 d	0.0855076	0.0219780	0.0524162
EARTH	2051-01-15 08:56	> 1 mo	0.1177424	0.0004698	0.5770595
EARTH	2107-06-26 02:29	> 1 w	0.1831454	0.0156798	0.5007320

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
326.88612295	19.36695931	0.00016568	MINIMUM
35.42780005	153.47713799	0.02221405	MINIMUM
1.58081427	87.03137819	0.23972519	SADDLE
1.50105011	266.85768980	1.76144235	SADDLE
180.33053731	265.30747638	2.51868021	SADDLE
180.31500644	85.29951265	4.51793504	MAXIMUM

Download:

MOID Plots

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