Asteroids

2026TR8 help

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

Orbital Properties

Epoch

61400.0

MJD

Orbit type

Apollo

Perihelion (q)

0.959

Aphelion (Q)

1.276

Eccentricity (e)

0.142

Inclination (i)

16.0

deg

Orbit period (P)

431.3

Earth MOID

0.01950

U parameter

7.8

Next Earth close approach

Date

2027-03-28

Nominal distance (from Earth center)

0.1659

24818988

Maximum Brightness

23.9

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.5

mag

Diameter

13 - 29*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-10-09

Observatory

University of Arizona Mt. Lemmon 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

1.117116

1-sigma variation

0.000573

Unit

Eccentricity (e)

Value

0.141835

1-sigma variation

0.000419

Unit

Inclination (i)

Value

15.9607

1-sigma variation

0.0356

Unit

Long. of Ascending Node (Ω)

Value

19.2652

1-sigma variation

0.0019

Unit

Arg. of Perihelion (ω)

Value

57.8451

1-sigma variation

0.0717

Unit

Mean Anomaly (M)

Value

17.61966

1-sigma variation

0.04808

Unit

Perihelion distance

Value

0.958669

1-sigma variation

Unit

Aphelion distance

Value

1.275562

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.020682

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.183359

1-sigma variation

Unit

MOID

Value

0.019502

1-sigma variation

Unit

Orbit Period

Value

431.2663

1-sigma variation

Unit

U parameter

Value

7.8

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.28086E-7	2.39948E-7	2.03760E-5	1.10770E-6	-4.10901E-5	2.75382E-5
e	2.39948E-7	1.75490E-7	1.49022E-5	8.10141E-7	-3.00511E-5	2.01400E-5
i	2.03760E-5	1.49022E-5	1.26547E-3	6.87957E-5	-2.55188E-3	1.71025E-3
Ω	1.10770E-6	8.10141E-7	6.87957E-5	3.74005E-6	-1.38726E-4	9.29727E-5
ω	-4.10901E-5	-3.00511E-5	-2.55188E-3	-1.38726E-4	5.14643E-3	-3.44909E-3
M	2.75382E-5	2.01400E-5	1.71025E-3	9.29727E-5	-3.44909E-3	2.31155E-3

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

26.537

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

13 - 29*

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

0.815618

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-10-09.36214

Unit

Source

[2]

Last Observation

Value

2026-10-16.292692

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

20 (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 2026TR8 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	1955-10-16 02:36	> 1 d	0.0473808	0.0175001	0.0404527
EARTH	1956-03-23 07:16	> 1 d	0.1676843	0.1672260	0.0028282
EARTH	1968-10-15 09:12	> 1 d	0.0475048	0.0176764	0.0246824
EARTH	1969-03-23 06:47	> 1 d	0.1688849	0.1677048	0.0030672
EARTH	1981-10-19 09:13	> 1 d	0.1461788	0.0128406	0.0555033
EARTH	1982-03-17 01:05	> 1 d	0.1952403	0.1757242	0.0235871
EARTH	2013-10-10 12:01	> 1 d	0.0847709	0.0168707	0.0600558
EARTH	2014-04-02 10:02	> 1 w	0.1811258	0.1715001	0.0170822
EARTH	2026-10-13 15:50	< 1 min	0.0227636	0.0226063	0.0000524
EARTH	2027-03-28 21:48	178.4	0.1659047	0.1637018	0.0007386
EARTH	2039-10-10 10:14	> 1 d	0.0992724	0.0165362	0.0608045
EARTH	2040-04-04 00:28	> 1 w	0.1843966	0.1720070	0.0193052
EARTH	2072-10-18 04:05	> 1 d	0.1224729	0.0155387	0.0772212
EARTH	2073-03-19 10:44	> 1 d	0.1794604	0.1681635	0.0252358
EARTH	2085-10-15 06:35	> 1 d	0.0380054	0.0189990	0.0381094
EARTH	2086-03-25 03:46	> 1 d	0.1645569	0.1645514	0.0001989
EARTH	2098-10-16 12:47	> 1 d	0.0621904	0.0185143	0.0584019
EARTH	2099-03-23 08:49	> 1 d	0.1676359	0.1659401	0.0080982
EARTH	2111-10-21 08:38	> 1 d	0.1666035	0.0135365	0.1044108

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
310.02103414	278.45791261	0.01950216	MINIMUM
99.03889649	80.92891688	0.16436062	MINIMUM
29.68633386	8.08955216	0.27245005	SADDLE
203.06197435	173.66085419	0.39490410	SADDLE
4.12263560	158.34527259	1.95792846	SADDLE
170.34553447	324.24562530	2.24721305	MAXIMUM

Download:

MOID Plots

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