Asteroids

2026TB8 help

Last update: 2026-10-16 13:15 UTC

Orbital Properties

Epoch

61400.0

MJD

Orbit type

Apollo

Perihelion (q)

0.832

Aphelion (Q)

1.234

Eccentricity (e)

0.195

Inclination (i)

9.8

deg

Orbit period (P)

383.4

Earth MOID

0.00076

U parameter

6.5

Next Earth close approach

Date

2026-10-25

Nominal distance (from Earth center)

0.01816

2717045

Maximum Brightness

18.6

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

40 - 90*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-10-06

Observatory

Pan-STARRS 2, 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

1.032886

1-sigma variation

0.000068

Unit

Eccentricity (e)

Value

0.194714

1-sigma variation

0.000106

Unit

Inclination (i)

Value

9.7837

1-sigma variation

0.0056

Unit

Long. of Ascending Node (Ω)

Value

32.3265

1-sigma variation

0.0008

Unit

Arg. of Perihelion (ω)

Value

90.2903

1-sigma variation

0.0071

Unit

Mean Anomaly (M)

Value

350.05714

1-sigma variation

0.01262

Unit

Perihelion distance

Value

0.831769

1-sigma variation

Unit

Aphelion distance

Value

1.234003

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.001117

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.011493

1-sigma variation

Unit

MOID

Value

0.000765

1-sigma variation

Unit

Orbit Period

Value

383.4221

1-sigma variation

Unit

U parameter

Value

6.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.68943E-9	7.22405E-9	3.81650E-7	5.23066E-8	-4.82705E-7	8.63980E-7
e	7.22405E-9	1.11720E-8	5.90185E-7	7.92743E-8	-7.38594E-7	1.33236E-6
i	3.81650E-7	5.90185E-7	3.11781E-5	4.18897E-6	-3.90244E-5	7.03877E-5
Ω	5.23066E-8	7.92743E-8	4.18897E-6	6.23757E-7	-5.53511E-6	9.59432E-6
ω	-4.82705E-7	-7.38594E-7	-3.90244E-5	-5.53511E-6	5.02662E-5	-8.87722E-5
M	8.63980E-7	1.33236E-6	7.03877E-5	9.59432E-6	-8.87722E-5	1.59225E-4

Date of computation: 2026-10-16 13:15 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

24.043

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

40 - 90*

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

0.575812

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-10-05.340641

Unit

Source

[2]

Last Observation

Value

2026-10-15.45557

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

46 (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 2026TB8 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	1963-10-25 05:54	> 1 w	0.0263263	0.0020265	0.6941926
EARTH	1966-04-24 09:18	> 1 d	0.0079987	0.0065615	0.0588966
EARTH	1987-10-26 13:52	1230.9	0.0289495	0.0041305	0.0232887
EARTH	1990-04-24 06:41	224.7	0.0061788	0.0047729	0.0021164
EARTH	2007-10-31 05:32	353.1	0.1095202	0.0791909	0.0101112
EARTH	2009-04-14 14:15	983.3	0.1299272	0.0995460	0.0101503
EARTH	2026-10-25 09:26	< 1 min	0.0181623	0.0181302	0.0000107
EARTH	2029-04-25 07:28	75.2	0.0154560	0.0128736	0.0009068
EARTH	2046-10-29 06:30	312.1	0.1367732	0.1213597	0.0051380
EARTH	2048-04-16 16:21	590.7	0.1050482	0.0888375	0.0054160
EARTH	2065-10-27 01:38	180.7	0.0109890	0.0039600	0.0027169
EARTH	2067-03-15 19:41	> 1 d	0.1778092	0.1615492	0.0054577
EARTH	2068-05-02 13:17	496.5	0.1949390	0.1446212	0.0167922
EARTH	2082-10-19 16:58	> 1 d	0.1635616	0.0006626	0.1412477
EARTH	2085-04-24 08:36	> 1 w	0.0215388	0.0039283	0.1477456
EARTH	2099-10-27 00:55	> 1 mo	0.0225567	0.0073818	1.9660963
EARTH	2101-02-27 20:40	> 1 w	0.1948013	0.1930451	0.0396574
EARTH	2102-05-03 17:28	> 1 w	0.1641326	0.0255033	1.8760508
EARTH	2116-10-20 19:02	> 1 mo	0.1747599	0.0041404	23.8091367
EARTH	2117-12-24 03:37	> 1 mo	0.1977283	0.1204741	11.7155597
EARTH	2119-04-26 03:45	> 1 mo	0.0140261	0.0071753	22.4397285

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
281.10511084	290.38501524	0.00076492	MINIMUM
80.36674537	110.39918584	0.00791118	MINIMUM
0.85263297	20.33666845	0.21694964	SADDLE
180.62152753	200.44430945	0.29121577	SADDLE
1.87145340	201.56190795	1.83906425	SADDLE
181.43080176	21.11885461	2.21030202	MAXIMUM

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MOID Plots

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

Level lines of the squared distance function

2026TB8

Date in UTC	MJD	σ	σ_imp	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS	TS
2116-04-22.799	94024.799	0.925	0.000	1.66 ± 0.024	1.92E6	3.31E-7	4.90E0	-6.36	0
2120-10-26.175	95672.175	0.841	0.000	1.35 ± 0.045	8.87E6	7.99E-8	4.90E0	-7.00	0


Based on 46 optical observations (of which 0 are rejected as outliers) from 2026/10/05.341 to 2026/10/15.456.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.82 and 1.82 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 5.0, Date of computation=20261016 142530.639 UTC.

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