Asteroids

2026AB help

Last update: 2026-01-08 13:45 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.971

Aphelion (Q)

3.779

Eccentricity (e)

0.591

Inclination (i)

5.6

deg

Orbit period (P)

1336.8

Earth MOID

0.00248

U parameter

7.6

Next Earth close approach

Date

2044-01-04

Nominal distance (from Earth center)

0.02707

4048968

Maximum Brightness

21.4

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

27.4

mag

Diameter

9 - 19*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-01-07

Observatory

JPL SynTrack Robotic Telescope, Auberry

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

2.374898

1-sigma variation

0.002149

Unit

Eccentricity (e)

Value

0.591094

1-sigma variation

0.000373

Unit

Inclination (i)

Value

5.6423

1-sigma variation

0.0026

Unit

Long. of Ascending Node (Ω)

Value

109.9862

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

17.1512

1-sigma variation

0.0015

Unit

Mean Anomaly (M)

Value

342.83672

1-sigma variation

0.02349

Unit

Perihelion distance

Value

0.971111

1-sigma variation

Unit

Aphelion distance

Value

3.778686

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.003744

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

2.531786

1-sigma variation

Unit

MOID

Value

0.002482

1-sigma variation

Unit

Orbit Period

Value

1336.7984

1-sigma variation

Unit

U parameter

Value

7.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.61838E-6	8.01177E-7	5.58040E-6	1.21435E-7	2.61014E-6	5.04904E-5
e	8.01177E-7	1.38985E-7	9.68126E-7	2.09765E-8	4.53456E-7	8.75874E-6
i	5.58040E-6	9.68126E-7	6.75233E-6	1.36058E-7	3.22239E-6	6.09962E-5
Ω	1.21435E-7	2.09765E-8	1.36058E-7	1.72546E-8	-2.66670E-8	1.34350E-6
ω	2.61014E-6	4.53456E-7	3.22239E-6	-2.66670E-8	2.17406E-6	2.84169E-5
M	5.04904E-5	8.75874E-6	6.09962E-5	1.34350E-6	2.84169E-5	5.52005E-4

Date of computation: 2026-01-08 13:45 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

27.439

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

9 - 19*

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

[-]

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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

0.850295

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-01-07.199098

Unit

Source

[2]

Last Observation

Value

2026-01-08.520926

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

30 (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 2026AB 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	1981-12-22 05:40	> 1 w	0.1012016	0.0131033	0.1839981
EARTH	2014-12-21 08:36	> 1 w	0.1490780	0.0090441	0.0906442
EARTH	2026-01-10 04:10	< 1 min	0.0053483	0.0053393	0.0000030
EARTH	2044-01-04 02:23	> 1 w	0.0270657	0.0014962	0.1144839
EARTH	2061-12-17 02:57	> 1 mo	0.1826233	0.0146692	1.6009261
EARTH	2087-03-07 22:28	> 1 mo	0.1366706	0.0684822	2.5243985
EARTH	2105-03-08 03:45	> 1 mo	0.1342232	0.0677864	1.8486512
EARTH	2123-01-08 22:12	> 1 mo	0.0208349	0.0061452	0.2217705
4 Vesta	2123-07-22 06:11	> 1 w	0.0186116	0.0173248	0.0708113

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
351.80085869	9.56658345	0.00248248	MINIMUM
0.75203797	206.76074972	1.98723640	SADDLE
180.23759634	205.98732590	2.76287152	SADDLE
180.10926464	25.91867562	4.76360187	MAXIMUM

Download:

MOID Plots

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

Level lines of the squared distance function

2026AB

Date in UTC	MJD	σ	σ_imp	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS	TS
2076-01-10.677	79312.677	0.181	0.000	0.79 ± 0.016	4.58E5	2.46E-6	5.22E-2	-6.82	0


Based on 30 optical observations (of which 0 are rejected as outliers) from 2026/01/07.199 to 2026/01/08.521.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.58 and 1.58 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 5.0, Date of computation=20260108 134921.977 UTC.

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Download Impactor Table as: