Asteroids

2026TB help

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

Orbital Properties

Epoch

61400.0

MJD

Orbit type

Apollo

Perihelion (q)

0.684

Aphelion (Q)

1.694

Eccentricity (e)

0.424

Inclination (i)

13.7

deg

Orbit period (P)

473.7

Earth MOID

0.00972

U parameter

8.0

Next Earth close approach

Date

2034-03-12

Nominal distance (from Earth center)

0.09132

13661037

Maximum Brightness

23.2

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

2026-10-01

Observatory

Pan-STARRS 1, Haleakala

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

1.189312

1-sigma variation

0.000851

Unit

Eccentricity (e)

Value

0.424480

1-sigma variation

0.000637

Unit

Inclination (i)

Value

13.6624

1-sigma variation

0.0199

Unit

Long. of Ascending Node (Ω)

Value

183.0062

1-sigma variation

0.0012

Unit

Arg. of Perihelion (ω)

Value

83.6785

1-sigma variation

0.0139

Unit

Mean Anomaly (M)

Value

115.99107

1-sigma variation

0.15452

Unit

Perihelion distance

Value

0.684473

1-sigma variation

Unit

Aphelion distance

Value

1.694152

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.064751

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.021281

1-sigma variation

Unit

MOID

Value

0.009723

1-sigma variation

Unit

Orbit Period

Value

473.7425

1-sigma variation

Unit

U parameter

Value

8.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	7.23359E-7	5.40442E-7	1.68853E-5	-8.30701E-7	1.13017E-5	-1.31415E-4
e	5.40442E-7	4.05278E-7	1.26522E-5	-5.95511E-7	8.28173E-6	-9.82337E-5
i	1.68853E-5	1.26522E-5	3.95055E-4	-1.87742E-5	2.59837E-4	-3.06882E-3
Ω	-8.30701E-7	-5.95511E-7	-1.87742E-5	1.37620E-6	-1.56962E-5	1.50073E-4
ω	1.13017E-5	8.28173E-6	2.59837E-4	-1.56962E-5	1.94104E-4	-2.04777E-3
M	-1.31415E-4	-9.82337E-5	-3.06882E-3	1.50073E-4	-2.04777E-3	2.38761E-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

24.909

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

[-]

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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

0.400247

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-10-01.1197

Unit

Source

[2]

Last Observation

Value

2026-10-06.373603

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 2026TB 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	1950-03-13 05:22	> 1 d	0.0690515	0.0366042	0.1097291
EARTH	1959-03-31 12:07	> 1 w	0.1910919	0.0535694	0.1387598
EARTH	1964-09-21 19:01	> 1 w	0.0442021	0.0106491	0.2692414
EARTH	1973-09-30 23:04	> 1 w	0.1552063	0.0083242	0.2173990
EARTH	1981-03-06 23:35	> 1 d	0.1854057	0.0432009	0.1492234
EARTH	1990-03-17 17:16	> 1 d	0.0422247	0.0335067	0.0230072
EARTH	2004-09-24 08:05	> 1 d	0.0144836	0.0099387	0.0967226
EARTH	2021-03-28 12:21	> 1 d	0.1686908	0.0760900	0.0326012
EARTH	2026-09-25 00:08	1.5	0.0145951	0.0145337	0.0000205
EARTH	2034-03-12 19:41	> 1 d	0.0913184	0.0329578	0.0492930
EARTH	2039-09-16 00:38	> 1 d	0.1752730	0.0010260	0.0768676
EARTH	2056-03-31 01:34	> 1 w	0.1885594	0.0497872	0.1293969
EARTH	2061-09-29 00:44	> 1 d	0.1017476	0.0071874	0.1400365
EARTH	2069-03-17 14:36	> 1 w	0.0317791	0.0307352	0.0385045
EARTH	2074-09-21 19:46	> 1 w	0.0623166	0.0076984	0.3658169
EARTH	2082-03-08 03:39	> 1 w	0.1885374	0.0357770	0.4408635
EARTH	2096-10-02 11:00	> 1 w	0.1800026	0.0036006	0.4814978
EARTH	2104-03-21 22:20	> 1 w	0.0739960	0.0307536	0.4155487
EARTH	2109-09-25 07:05	> 1 w	0.0093674	0.0070764	0.2265155
EARTH	2126-03-24 11:10	> 1 mo	0.1052784	0.0347391	2.6374993

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
68.78788122	258.91739557	0.00972348	MINIMUM
294.61528566	72.48383802	0.03187306	MINIMUM
2.06513941	166.56567819	0.38459925	SADDLE
181.18351106	344.46510862	0.77311361	SADDLE
1.08548834	344.95367992	1.65700868	SADDLE
180.04223631	163.73048650	2.69070062	MAXIMUM

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MOID Plots

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