Asteroids

2026TM help

Last update: 2026-10-07 14:31 UTC

Orbital Properties

Epoch

61400.0

MJD

Orbit type

Apollo

Perihelion (q)

0.976

Aphelion (Q)

1.444

Eccentricity (e)

0.193

Inclination (i)

21.4

deg

Orbit period (P)

486.2

Earth MOID

0.02305

U parameter

8.1

Next Earth close approach

Date

2030-09-28

Nominal distance (from Earth center)

0.06378

9541641

Maximum Brightness

21.4

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

24.9

mag

Diameter

28 - 60*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-10-02

Observatory

University of Arizona Catalina Sky 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

61400.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.210022

1-sigma variation

0.000988

Unit

Eccentricity (e)

Value

0.193239

1-sigma variation

0.000655

Unit

Inclination (i)

Value

21.4071

1-sigma variation

0.0392

Unit

Long. of Ascending Node (Ω)

Value

188.7999

1-sigma variation

0.0018

Unit

Arg. of Perihelion (ω)

Value

135.1025

1-sigma variation

0.0482

Unit

Mean Anomaly (M)

Value

94.17262

1-sigma variation

0.15592

Unit

Perihelion distance

Value

0.976199

1-sigma variation

Unit

Aphelion distance

Value

1.443846

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.351802

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.024570

1-sigma variation

Unit

MOID

Value

0.023048

1-sigma variation

Unit

Orbit Period

Value

486.1704

1-sigma variation

Unit

U parameter

Value

8.1

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	9.76899E-7	6.47602E-7	3.86759E-5	1.82294E-6	4.76452E-5	-1.54104E-4
e	6.47602E-7	4.29341E-7	2.56289E-5	1.20803E-6	3.15754E-5	-1.02154E-4
i	3.86759E-5	2.56289E-5	1.53516E-3	7.23435E-5	1.88818E-3	-6.10170E-3
Ω	1.82294E-6	1.20803E-6	7.23435E-5	3.40923E-6	8.89876E-5	-2.87592E-4
ω	4.76452E-5	3.15754E-5	1.88818E-3	8.89876E-5	2.32674E-3	-7.51747E-3
M	-1.54104E-4	-1.02154E-4	-6.10170E-3	-2.87592E-4	-7.51747E-3	2.43104E-2

Date of computation: 2026-10-07 14:31 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

24.902

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

28 - 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

0.596396

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-10-02.382717

Unit

Source

[2]

Last Observation

Value

2026-10-04.388016

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

27 (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 2026TM 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	2010-10-07 11:39	> 1 w	0.1456371	0.0172129	0.3616535
EARTH	2014-10-04 09:18	> 1 w	0.0752678	0.0208447	0.2744728
EARTH	2018-10-02 02:04	> 1 d	0.0296017	0.0222459	0.0963818
EARTH	2022-10-01 05:00	> 1 d	0.0221510	0.0221389	0.0003844
EARTH	2026-09-30 10:59	< 1 min	0.0279054	0.0277419	0.0000545
EARTH	2030-09-28 12:43	> 1 d	0.0637819	0.0210524	0.0289254
EARTH	2034-09-25 15:12	> 1 d	0.1231782	0.0168407	0.0538107
EARTH	2038-09-22 02:26	> 1 d	0.1946796	0.0077858	0.0741358
EARTH	2111-10-09 09:05	> 1 w	0.1529956	0.0154925	0.2166417
EARTH	2115-10-06 05:16	> 1 w	0.0815119	0.0195395	0.1890841
EARTH	2119-10-03 18:29	> 1 d	0.0319072	0.0211294	0.1010510
EARTH	2123-10-02 20:31	> 1 d	0.0214676	0.0211844	0.0078421

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
36.47846520	265.59435718	0.02304828	MINIMUM
260.95204518	108.81706351	0.29877908	MINIMUM
318.27713925	170.71688738	0.37998805	SADDLE
150.54474646	17.73514358	0.59301095	SADDLE
348.34710678	29.09517846	1.94140383	SADDLE
185.86355144	227.28604856	2.43570189	MAXIMUM

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MOID Plots

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