Asteroids

2026SB help

Last update: 2026-09-16 22:45 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.863

Aphelion (Q)

4.266

Eccentricity (e)

0.664

Inclination (i)

0.1

deg

Orbit period (P)

1499.7

Earth MOID

0.00084

U parameter

7.5

Next Earth close approach

Date

2030-07-26

Nominal distance (from Earth center)

0.15509

23201749

Maximum Brightness

53.1

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

7 - 15*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-09-16

Observatory

ATLAS-TDO

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

2.564148

1-sigma variation

0.002186

Unit

Eccentricity (e)

Value

0.663552

1-sigma variation

0.000307

Unit

Inclination (i)

Value

0.0598

1-sigma variation

0.0013

Unit

Long. of Ascending Node (Ω)

Value

302.0734

1-sigma variation

1.5483

Unit

Arg. of Perihelion (ω)

Value

0.0330

1-sigma variation

1.5453

Unit

Mean Anomaly (M)

Value

344.82437

1-sigma variation

0.01867

Unit

Perihelion distance

Value

0.862702

1-sigma variation

Unit

Aphelion distance

Value

4.265594

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.153141

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

3.279389

1-sigma variation

Unit

MOID

Value

0.000836

1-sigma variation

Unit

Orbit Period

Value

1499.7297

1-sigma variation

Unit

U parameter

Value

7.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.77817E-6	6.71967E-7	-1.68112E-6	-2.01946E-3	2.01382E-3	4.08081E-5
e	6.71967E-7	9.45086E-8	-2.39337E-7	-2.87538E-4	2.86739E-4	5.73983E-6
i	-1.68112E-6	-2.39337E-7	1.64201E-6	1.98404E-3	-1.98011E-3	-1.46721E-5
Ω	-2.01946E-3	-2.87538E-4	1.98404E-3	2.39736E0	-2.39262E0	-1.76285E-2
ω	2.01382E-3	2.86739E-4	-1.98011E-3	-2.39262E0	2.38789E0	1.75797E-2
M	4.08081E-5	5.73983E-6	-1.46721E-5	-1.76285E-2	1.75797E-2	3.48617E-4

Date of computation: 2026-09-16 22:45 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

28.011

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

7 - 15*

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

0.9

Unit

Source

[1]

Unobserved

Value

0.6

Unit

Source

[1]

Normalized RMS of residuals

Value

0.467101

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-09-16.070181

Unit

Source

[2]

Last Observation

Value

2026-09-16.9306

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

17 (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

Filters

Initial Date: *

Final Date: *

Normalised Only accepted

Max residual (arcsec):

* - these fields are required

Plot

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 2026SB 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	1981-05-24 21:32	> 1 w	0.0310417	0.0011960	0.0829888
EARTH	1985-08-12 02:46	> 1 w	0.1644292	0.0692932	0.0317179
EARTH	2022-05-26 20:40	> 1 d	0.0616448	0.0008555	0.0310787
EARTH	2026-09-15 04:51	< 1 min	0.0008444	0.0008412	0.0000011
EARTH	2030-07-26 04:53	> 1 w	0.1550941	0.1511109	0.0013316
EARTH	2034-06-07 19:52	> 1 w	0.0552484	0.0104480	0.0503941
EARTH	2038-05-14 23:37	> 1 d	0.1990626	0.0195354	0.0606806
MARS	2097-12-12 02:02	> 1 d	0.0343205	0.0038736	0.0567011
EARTH	2105-09-11 12:31	> 1 w	0.0456419	0.0002870	0.0473589
EARTH	2109-06-21 15:18	685.5	0.1207580	0.1154496	0.0017698

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
23.70456489	248.62091947	0.00083596	MINIMUM
335.65599945	145.92316478	0.00088704	MINIMUM
359.62499006	197.19813056	0.15336548	SADDLE
359.63644616	17.21345633	1.84696462	SADDLE
179.92487326	17.59893902	3.28131417	SADDLE
179.92246224	197.59571593	5.28164319	MAXIMUM

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MOID Plots

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