Asteroids

2026TU help

Last update: 2026-10-21 13:15 UTC

Orbital Properties

Epoch

61400.0

MJD

Orbit type

Apollo

Perihelion (q)

0.953

Aphelion (Q)

1.418

Eccentricity (e)

0.196

Inclination (i)

12.8

deg

Orbit period (P)

471.5

Earth MOID

0.03132

U parameter

7.3

Next Earth close approach

Date

2057-04-26

Nominal distance (from Earth center)

0.19536

29225079

Maximum Brightness

23.6

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.4

mag

Diameter

22 - 50*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-10-03

Observatory

GINOP-KHK, Piszkesteto

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

1.185506

1-sigma variation

0.000321

Unit

Eccentricity (e)

Value

0.195719

1-sigma variation

0.000249

Unit

Inclination (i)

Value

12.8244

1-sigma variation

0.0123

Unit

Long. of Ascending Node (Ω)

Value

8.5664

1-sigma variation

0.0013

Unit

Arg. of Perihelion (ω)

Value

299.6480

1-sigma variation

0.0078

Unit

Mean Anomaly (M)

Value

108.10525

1-sigma variation

0.05403

Unit

Perihelion distance

Value

0.953480

1-sigma variation

Unit

Aphelion distance

Value

1.417532

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.039315

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.264688

1-sigma variation

Unit

MOID

Value

0.031316

1-sigma variation

Unit

Orbit Period

Value

471.4698

1-sigma variation

Unit

U parameter

Value

7.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.02803E-7	7.96790E-8	3.93729E-6	4.07610E-7	2.51232E-6	-1.73234E-5
e	7.96790E-8	6.17573E-8	3.05166E-6	3.15932E-7	1.94708E-6	-1.34267E-5
i	3.93729E-6	3.05166E-6	1.50807E-4	1.56114E-5	9.62021E-5	-6.63460E-4
Ω	4.07610E-7	3.15932E-7	1.56114E-5	1.61638E-6	9.96013E-6	-6.86867E-5
ω	2.51232E-6	1.94708E-6	9.62021E-5	9.96013E-6	6.14692E-5	-4.23400E-4
M	-1.73234E-5	-1.34267E-5	-6.63460E-4	-6.86867E-5	-4.23400E-4	2.91922E-3

Date of computation: 2026-10-21 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

25.387

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

22 - 50*

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

0.497846

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-10-03.047812

Unit

Source

[2]

Last Observation

Value

2026-10-20.129089

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

49 (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 2026TU 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	1964-04-30 15:44	1378.8	0.1787045	0.1776194	0.0008297
EARTH	1964-09-09 15:35	826.7	0.1995996	0.1811332	0.0061583
EARTH	1973-09-29 17:38	> 1 d	0.0637278	0.0304449	0.0323561
EARTH	1995-09-23 02:39	> 1 d	0.0891925	0.0269882	0.0637758
EARTH	2004-10-05 17:22	> 1 d	0.1942753	0.0373376	0.0541714
EARTH	2017-05-06 19:15	1030.3	0.1820612	0.1761162	0.0056419
EARTH	2026-09-26 05:37	< 1 min	0.0390197	0.0389051	0.0000382
EARTH	2057-04-26 08:23	> 1 w	0.1953576	0.1818457	0.0221805
EARTH	2057-09-18 05:09	> 1 d	0.1430991	0.0137996	0.0635913
EARTH	2066-09-30 15:38	> 1 d	0.0693685	0.0286354	0.0659434
EARTH	2088-05-01 14:25	> 1 d	0.1807866	0.1773850	0.0076213
EARTH	2097-09-29 14:36	> 1 d	0.0522978	0.0286503	0.0765057
EARTH	2119-09-23 22:18	1043.3	0.0912285	0.0582288	0.0112437

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
46.77056206	261.85362155	0.03131636	MINIMUM
287.24910348	120.00413516	0.17628520	MINIMUM
336.83014558	177.18331536	0.22593167	SADDLE
168.78373654	16.34350800	0.49498852	SADDLE
355.53373185	20.69500266	1.92841444	SADDLE
181.18701833	206.57079267	2.41983976	MAXIMUM

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MOID Plots

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