Asteroids

2026TA help

Last update: 2026-10-07 14:31 UTC

Orbital Properties

Epoch

61400.0

MJD

Orbit type

Apollo

Perihelion (q)

0.647

Aphelion (Q)

3.534

Eccentricity (e)

0.691

Inclination (i)

1.7

deg

Orbit period (P)

1104.0

Earth MOID

0.00331

U parameter

7.3

Next Earth close approach

Date

2029-10-14

Nominal distance (from Earth center)

0.13497

20190908

Maximum Brightness

25.9

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

26.7

mag

Diameter

12 - 28*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-10-01

Observatory

MAPS, San Pedro de Atacama

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

2.090426

1-sigma variation

0.001284

Unit

Eccentricity (e)

Value

0.690716

1-sigma variation

0.000223

Unit

Inclination (i)

Value

1.7186

1-sigma variation

0.0006

Unit

Long. of Ascending Node (Ω)

Value

180.3737

1-sigma variation

0.0006

Unit

Arg. of Perihelion (ω)

Value

272.0022

1-sigma variation

0.0004

Unit

Mean Anomaly (M)

Value

12.09611

1-sigma variation

0.00901

Unit

Perihelion distance

Value

0.646535

1-sigma variation

Unit

Aphelion distance

Value

3.534316

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.072892

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.116697

1-sigma variation

Unit

MOID

Value

0.003310

1-sigma variation

Unit

Orbit Period

Value

1103.9530

1-sigma variation

Unit

U parameter

Value

7.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.64980E-6	2.86153E-7	8.15589E-7	6.17027E-7	-5.06068E-7	-1.15725E-5
e	2.86153E-7	4.96325E-8	1.41484E-7	1.07113E-7	-8.78149E-8	-2.00722E-6
i	8.15589E-7	1.41484E-7	4.07431E-7	3.23009E-7	-2.62420E-7	-5.72116E-6
Ω	6.17027E-7	1.07113E-7	3.23009E-7	3.07487E-7	-2.42595E-7	-4.32905E-6
ω	-5.06068E-7	-8.78149E-8	-2.62420E-7	-2.42595E-7	1.98505E-7	3.55024E-6
M	-1.15725E-5	-2.00722E-6	-5.72116E-6	-4.32905E-6	3.55024E-6	8.11752E-5

Date of computation: 2026-10-07 14:31 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

26.658

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

12 - 28*

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

0.736641

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-10-01.17935

Unit

Source

[2]

Last Observation

Value

2026-10-03.615333

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 2026TA 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
VENUS	1954-04-02 14:20	298.9	0.0214537	0.0150707	0.0021277
EARTH	2020-09-25 14:41	> 1 d	0.1253599	0.0408342	0.0282175
EARTH	2023-09-29 15:37	> 1 d	0.0670467	0.0154753	0.0173496
EARTH	2026-10-03 19:32	< 1 s	0.0057973	0.0057918	0.0000018
EARTH	2029-10-14 18:00	> 1 d	0.1349679	0.0853151	0.0165554
EARTH	2054-03-04 17:48	> 1 w	0.1406181	0.0004849	0.1310624
EARTH	2057-03-16 11:04	> 1 w	0.0043251	0.0009283	0.1385306
16 Psyche	2059-06-06 00:54	> 1 mo	0.0116613	0.0005241	3.3679394
VENUS	2063-02-21 10:56	> 1 mo	0.0042703	0.0011177	14.8899451

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
40.58944404	70.25953512	0.00331011	MINIMUM
319.04870764	268.07739371	0.00503451	MINIMUM
359.72047423	349.02985388	0.33788500	SADDLE
359.71497535	169.02541949	1.66105611	SADDLE
179.94884135	169.35043600	2.52024708	SADDLE
179.95147851	349.35305498	4.51754110	MAXIMUM

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MOID Plots

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

Level lines of the squared distance function

2026TA

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS
2081-03-15.843	81203.843	-4.523	1.08 ± 0.002	2.59E5	4.74E-11	3.57E-1	-10.90
2081-03-15.848	81203.848	-2.315	1.15 ± 0.002	6.95E3	1.05E-6	3.57E-1	-6.55
2081-03-15.883	81203.883	-2.772	0.82 ± 0.002	1.32E3	1.06E-5	3.57E-1	-5.55
2081-03-15.906	81203.906	-4.357	0.39 ± 0.002	9.33E3	7.25E-9	3.57E-1	-8.71
2084-03-15.054	82299.054	-1.615	1.03 ± 0.089	1.35E7	1.50E-8	3.60E-1	-8.42
2087-03-16.035	83395.035	-1.068	0.24 ± 0.000	2.36E6	2.17E-7	3.58E-1	-7.28
2087-03-16.047	83395.047	-1.057	0.55 ± 0.008	2.06E6	2.44E-7	3.58E-1	-7.23
2090-03-15.862	84490.862	-1.067	0.52 ± 0.000	1.65E6	3.17E-7	3.58E-1	-7.14
2090-03-15.873	84490.873	-1.058	0.08 ± 0.000	1.17E6	4.49E-7	3.58E-1	-6.99
2091-03-16.251	84856.251	-0.412	0.62 ± 0.089	1.44E7	5.19E-8	3.56E-1	-7.93
2100-03-16.189	88143.189	-0.911	0.02 ± 0.063	1.99E7	3.07E-8	3.52E-1	-8.22
2109-03-16.154	91430.154	-0.173	1.11 ± 0.000	1.25E8	2.23E-9	3.53E-1	-9.41
2109-03-16.276	91430.276	-0.611	0.81 ± 0.253	5.09E7	1.44E-8	3.53E-1	-8.60
2118-03-16.167	94717.167	-0.870	0.14 ± 0.179	2.93E7	2.13E-8	3.51E-1	-8.48
2121-03-15.922	95812.922	-0.622	1.13 ± 0.000	5.39E7	5.97E-9	3.52E-1	-9.04
2121-03-15.974	95812.974	-0.159	1.04 ± 0.506	1.11E8	3.99E-9	3.52E-1	-9.22
2124-03-15.434	96908.434	-0.189	1.04 ± 0.045	5.67E6	1.05E-7	3.50E-1	-7.81
2124-03-15.445	96908.445	-0.333	0.50 ± 0.011	2.28E6	3.49E-7	3.50E-1	-7.29
2124-03-15.504	96908.504	-0.626	1.04 ± 0.000	2.04E6	1.74E-7	3.50E-1	-7.59


Based on 49 optical observations (of which 0 are rejected as outliers) from 2026/10/01.179 to 2026/10/03.615.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.16 and 1.16 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 5.0, Date of computation=20261007 155424.780 UTC.

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