Asteroids

2026TZ102 help

Last update: 2026-10-22 13:15 UTC

Orbital Properties

Epoch

61400.0

MJD

Orbit type

Apollo

Perihelion (q)

0.888

Aphelion (Q)

4.462

Eccentricity (e)

0.668

Inclination (i)

0.4

deg

Orbit period (P)

1598.1

Earth MOID

0.00109

U parameter

7.6

Next Earth close approach

Date

2048-07-11

Nominal distance (from Earth center)

0.0105

1570364

Maximum Brightness

17.7

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

24.5

mag

Diameter

30 - 80*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-10-15

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

2.675068

1-sigma variation

0.003676

Unit

Eccentricity (e)

Value

0.667884

1-sigma variation

0.000475

Unit

Inclination (i)

Value

0.4154

1-sigma variation

0.0002

Unit

Long. of Ascending Node (Ω)

Value

26.5426

1-sigma variation

0.0006

Unit

Arg. of Perihelion (ω)

Value

307.4524

1-sigma variation

0.0017

Unit

Mean Anomaly (M)

Value

23.60987

1-sigma variation

0.04984

Unit

Perihelion distance

Value

0.888432

1-sigma variation

Unit

Aphelion distance

Value

4.461703

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.054870

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

1.513232

1-sigma variation

Unit

MOID

Value

0.001090

1-sigma variation

Unit

Orbit Period

Value

1598.0877

1-sigma variation

Unit

U parameter

Value

7.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.35141E-5	1.74766E-6	8.05710E-7	-1.86842E-6	-5.87325E-6	-1.83210E-4
e	1.74766E-6	2.26010E-7	1.04195E-7	-2.41621E-7	-7.59697E-7	-2.36930E-5
i	8.05710E-7	1.04195E-7	4.87035E-8	-1.20094E-7	-3.41403E-7	-1.09230E-5
Ω	-1.86842E-6	-2.41621E-7	-1.20094E-7	3.77472E-7	6.90112E-7	2.53304E-5
ω	-5.87325E-6	-7.59697E-7	-3.41403E-7	6.90112E-7	2.75634E-6	7.96134E-5
M	-1.83210E-4	-2.36930E-5	-1.09230E-5	2.53304E-5	7.96134E-5	2.48378E-3

Date of computation: 2026-10-22 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

24.455

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

30 - 80*

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

0.590611

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-10-15.127197

Unit

Source

[2]

Last Observation

Value

2026-10-20.34779

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

101 (1)

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 2026TZ102 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	1952-07-28 20:40	> 1 mo	0.0764274	0.0113780	0.1109796
MARS	1983-05-22 03:19	> 1 w	0.0335229	0.0027432	0.3798823
EARTH	2013-06-21 08:22	> 1 w	0.1593391	0.0088906	0.1912979
EARTH	2026-10-14 24:00	< 1 min	0.0313901	0.0313338	0.0000188
MARS	2048-05-14 00:31	> 1 w	0.0063696	0.0047131	0.1450342
EARTH	2048-07-11 14:43	> 1 mo	0.0104972	0.0071360	0.1647673
EARTH	2061-10-24 18:20	> 1 w	0.0887796	0.0075458	0.3159218
EARTH	2083-09-05 07:15	> 1 mo	0.1227484	0.0501994	0.0600262
EARTH	2105-08-03 13:33	> 1 mo	0.0863013	0.0094990	0.3425084

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
20.14107166	275.34696024	0.00109041	MINIMUM
338.31042045	184.64196264	0.00731928	MINIMUM
359.10765819	229.82348064	0.12085075	SADDLE
359.13765902	49.87534495	1.87740701	SADDLE
179.82562721	50.80084079	3.47264301	SADDLE
179.82288731	230.79646880	5.47074100	MAXIMUM

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MOID Plots

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

Level lines of the squared distance function

2026TZ102

Date in UTC	MJD	σ	σ_imp	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS	TS
2083-10-14.864	82146.864	2.807	0.000	0.22 ± 0.015	1.37E6	1.45E-8	4.93E0	-7.52	0


Based on 101 optical observations (of which 1 are rejected as outliers) from 2026/10/15.127 to 2026/10/20.348.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.28 and 1.28 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 5.0, Date of computation=20261022 134852.821 UTC.

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