Asteroids

2026TR3 help

Last update: 2026-10-08 14:46 UTC

Orbital Properties

Epoch

61400.0

MJD

Orbit type

Apollo

Perihelion (q)

0.723

Aphelion (Q)

2.198

Eccentricity (e)

0.505

Inclination (i)

10.5

deg

Orbit period (P)

644.7

Earth MOID

0.01212

U parameter

7.8

Next Earth close approach

Date

2048-03-27

Nominal distance (from Earth center)

0.17359

25969236

Maximum Brightness

26.9

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

27.8

mag

Diameter

7 - 16*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-10-05

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

1.460556

1-sigma variation

0.001021

Unit

Eccentricity (e)

Value

0.504834

1-sigma variation

0.000440

Unit

Inclination (i)

Value

10.4803

1-sigma variation

0.0088

Unit

Long. of Ascending Node (Ω)

Value

12.2115

1-sigma variation

0.0003

Unit

Arg. of Perihelion (ω)

Value

83.7806

1-sigma variation

0.0039

Unit

Mean Anomaly (M)

Value

14.50013

1-sigma variation

0.00547

Unit

Perihelion distance

Value

0.723218

1-sigma variation

Unit

Aphelion distance

Value

2.197895

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.032936

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.152429

1-sigma variation

Unit

MOID

Value

0.012118

1-sigma variation

Unit

Orbit Period

Value

644.7271

1-sigma variation

Unit

U parameter

Value

7.8

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.04168E-6	4.49067E-7	8.94585E-6	2.56086E-7	-3.97998E-6	-5.58058E-6
e	4.49067E-7	1.93594E-7	3.85652E-6	1.10401E-7	-1.71562E-6	-2.40580E-6
i	8.94585E-6	3.85652E-6	7.68303E-5	2.19919E-6	-3.41853E-5	-4.79255E-5
Ω	2.56086E-7	1.10401E-7	2.19919E-6	6.29796E-8	-9.78126E-7	-1.37194E-6
ω	-3.97998E-6	-1.71562E-6	-3.41853E-5	-9.78126E-7	1.52325E-5	2.13204E-5
M	-5.58058E-6	-2.40580E-6	-4.79255E-5	-1.37194E-6	2.13204E-5	2.98970E-5

Date of computation: 2026-10-08 14:46 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

27.799

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

7 - 16*

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

1.0

Unit

Source

[1]

Normalized RMS of residuals

Value

0.578172

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-10-04.448144

Unit

Source

[2]

Last Observation

Value

2026-10-08.157638

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

32 (4)

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 2026TR3 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	1958-03-03 10:08	> 1 mo	0.1808325	0.0376642	0.4154687
EARTH	1965-03-27 19:47	> 1 w	0.1972569	0.0498928	0.1841848
EARTH	1973-10-10 20:49	> 1 w	0.0342899	0.0091525	0.1401989
EARTH	1988-03-11 01:28	> 1 w	0.1135973	0.0493473	0.1852801
EARTH	2003-10-29 17:25	> 1 w	0.1863087	0.0183763	0.1340628
EARTH	2018-03-21 22:46	> 1 d	0.0823912	0.0505175	0.0461195
EARTH	2026-10-09 02:36	< 1 s	0.0119019	0.0118720	0.0000100
EARTH	2048-03-27 01:17	> 1 d	0.1735936	0.0457981	0.1171256
EARTH	2056-10-11 09:32	> 1 w	0.0390098	0.0128856	0.1520438
EARTH	2071-03-16 18:06	> 1 d	0.0611190	0.0481231	0.0697246
EARTH	2079-10-02 18:51	> 1 w	0.1219023	0.0119290	0.3121212
EARTH	2101-03-25 10:45	> 1 w	0.1150903	0.0456416	0.4792223
EARTH	2109-10-11 02:26	> 1 w	0.0178384	0.0154224	0.2094278
EARTH	2124-03-20 14:08	> 1 mo	0.0494665	0.0459451	1.2646799

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
308.38893098	273.62075861	0.01211758	MINIMUM
52.50293086	73.78583688	0.04972348	MINIMUM
0.86048099	354.57482838	0.30203143	SADDLE
180.20899852	173.00119141	1.21374590	SADDLE
359.94086570	172.98479233	1.73109921	SADDLE
179.79948693	352.76232083	3.17009281	MAXIMUM

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MOID Plots

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