Asteroids

2026TS1 help

Last update: 2026-10-14 13:31 UTC

Orbital Properties

Epoch

61400.0

MJD

Orbit type

Apollo

Perihelion (q)

0.640

Aphelion (Q)

2.087

Eccentricity (e)

0.531

Inclination (i)

5.0

deg

Orbit period (P)

581.7

Earth MOID

0.00235

U parameter

8.5

Next Earth close approach

Date

2031-03-21

Nominal distance (from Earth center)

0.04399

6580481

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.7

mag

Diameter

19 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-10-04

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

1.363759

1-sigma variation

0.002696

Unit

Eccentricity (e)

Value

0.530623

1-sigma variation

0.001319

Unit

Inclination (i)

Value

5.0427

1-sigma variation

0.0113

Unit

Long. of Ascending Node (Ω)

Value

356.2855

1-sigma variation

0.0059

Unit

Arg. of Perihelion (ω)

Value

273.1630

1-sigma variation

0.0142

Unit

Mean Anomaly (M)

Value

89.75700

1-sigma variation

0.30433

Unit

Perihelion distance

Value

0.640117

1-sigma variation

Unit

Aphelion distance

Value

2.087401

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.051757

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.015204

1-sigma variation

Unit

MOID

Value

0.002353

1-sigma variation

Unit

Orbit Period

Value

581.7078

1-sigma variation

Unit

U parameter

Value

8.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	7.26622E-6	3.55251E-6	3.04163E-5	-1.07011E-5	2.80892E-5	-8.20332E-4
e	3.55251E-6	1.73918E-6	1.49259E-5	-5.02055E-6	1.32643E-5	-4.01128E-4
i	3.04163E-5	1.49259E-5	1.28632E-4	-3.97802E-5	1.06477E-4	-3.43537E-3
Ω	-1.07011E-5	-5.02055E-6	-3.97802E-5	3.49584E-5	-8.38806E-5	1.20250E-3
ω	2.80892E-5	1.32643E-5	1.06477E-4	-8.38806E-5	2.02829E-4	-3.15872E-3
M	-8.20332E-4	-4.01128E-4	-3.43537E-3	1.20250E-3	-3.15872E-3	9.26144E-2

Date of computation: 2026-10-14 13:31 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

25.699

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

19 - 40*

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

0.39602

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-10-04.131923

Unit

Source

[2]

Last Observation

Value

2026-10-09.512647

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

19 (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 2026TS1 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	1964-10-01 22:22	> 1 w	0.1523663	0.0076877	0.2313139
EARTH	1969-03-23 22:57	> 1 w	0.1018633	0.0005695	0.3493544
EARTH	1972-09-08 19:35	> 1 mo	0.1945163	0.0156462	0.3994109
EARTH	1999-09-22 22:04	> 1 w	0.0406753	0.0077760	0.1840855
EARTH	2004-03-13 17:52	> 1 w	0.0798417	0.0010206	0.2169513
EARTH	2026-09-26 06:02	2.4	0.0212177	0.0210619	0.0000519
EARTH	2031-03-21 09:02	> 1 d	0.0439878	0.0019839	0.0910354
EARTH	2034-09-10 18:41	> 1 w	0.1861536	0.0164400	0.1009753
EARTH	2039-03-11 16:20	> 1 d	0.1472717	0.0014903	0.1286116
EARTH	2069-10-05 04:11	> 1 d	0.1993426	0.0115842	0.1381994
EARTH	2077-09-25 16:05	> 1 w	0.0122356	0.0095888	0.1356778
EARTH	2082-03-27 11:23	> 1 mo	0.1289197	0.0012683	0.5970868
EARTH	2085-09-23 00:46	> 1 mo	0.0415335	0.0099373	0.8152662
EARTH	2090-03-23 14:28	> 1 mo	0.0745781	0.0035631	0.5456471
EARTH	2093-09-19 15:58	> 1 w	0.0931167	0.0110453	0.1675637
EARTH	2098-03-22 00:35	> 1 w	0.0464028	0.0037941	0.3660526
EARTH	2101-09-20 13:23	> 1 mo	0.0942894	0.0108362	0.5099971
EARTH	2106-03-25 02:28	> 1 mo	0.0799593	0.0035040	0.6521335
EARTH	2109-09-23 12:38	> 1 mo	0.0494986	0.0103425	0.5702109
EARTH	2114-03-28 06:14	> 1 w	0.1253643	0.0030790	0.2460695
EARTH	2117-09-25 15:37	> 1 d	0.0150435	0.0095889	0.0366603
EARTH	2122-03-27 15:12	> 1 w	0.1186351	0.0024296	0.3817949
EARTH	2125-09-23 06:35	> 1 mo	0.0541687	0.0102913	0.6039477

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
300.62464797	73.94494367	0.00235272	MINIMUM
59.88216602	259.61641347	0.00845874	MINIMUM
0.39980602	166.90229321	0.38107193	SADDLE
180.12077834	346.67132336	1.11083951	SADDLE
0.47187930	347.04632539	1.62233484	SADDLE
180.17592310	166.70482779	3.09930490	MAXIMUM

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MOID Plots

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