Asteroids

2026TO1 help

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

Orbital Properties

Epoch

61400.0

MJD

Orbit type

Apollo

Perihelion (q)

0.732

Aphelion (Q)

2.979

Eccentricity (e)

0.605

Inclination (i)

4.3

deg

Orbit period (P)

923.4

Earth MOID

0.00632

U parameter

8.6

Next Earth close approach

Date

2054-04-28

Nominal distance (from Earth center)

0.07764

11614320

Maximum Brightness

24.4

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

27.1

mag

Diameter

10 - 23*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-10-04

Observatory

University of Arizona Catalina Sky 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

1.855735

1-sigma variation

0.006321

Unit

Eccentricity (e)

Value

0.605299

1-sigma variation

0.001587

Unit

Inclination (i)

Value

4.2943

1-sigma variation

0.0100

Unit

Long. of Ascending Node (Ω)

Value

14.0935

1-sigma variation

0.0009

Unit

Arg. of Perihelion (ω)

Value

281.9587

1-sigma variation

0.0025

Unit

Mean Anomaly (M)

Value

50.84256

1-sigma variation

0.27656

Unit

Perihelion distance

Value

0.732460

1-sigma variation

Unit

Aphelion distance

Value

2.979010

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.045779

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.345939

1-sigma variation

Unit

MOID

Value

0.006324

1-sigma variation

Unit

Orbit Period

Value

923.3630

1-sigma variation

Unit

U parameter

Value

8.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.99535E-5	1.00341E-5	6.31839E-5	5.48973E-6	-1.53828E-5	-1.74811E-3
e	1.00341E-5	2.52000E-6	1.58689E-5	1.37860E-6	-3.86474E-6	-4.39025E-4
i	6.31839E-5	1.58689E-5	1.00058E-4	8.64752E-6	-2.44730E-5	-2.76449E-3
Ω	5.48973E-6	1.37860E-6	8.64752E-6	7.65523E-7	-2.09091E-6	-2.40200E-4
ω	-1.53828E-5	-3.86474E-6	-2.44730E-5	-2.09091E-6	6.28872E-6	6.73003E-4
M	-1.74811E-3	-4.39025E-4	-2.76449E-3	-2.40200E-4	6.73003E-4	7.64857E-2

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

27.065

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

10 - 23*

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

0.530364

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-10-04.345418

Unit

Source

[2]

Last Observation

Value

2026-10-07.274995

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

21 (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 2026TO1 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	1955-04-21 07:45	> 1 mo	0.1810191	0.0298536	1.3519503
EARTH	1965-09-18 18:12	> 1 mo	0.1313068	0.0061902	2.2654381
VENUS	1988-06-28 21:35	> 1 mo	0.0350921	0.0175846	0.6146947
EARTH	2016-05-01 10:07	> 1 w	0.0370664	0.0348056	0.1095917
EARTH	2026-10-02 15:54	< 1 min	0.0073174	0.0072641	0.0000178
EARTH	2054-04-28 09:34	> 1 mo	0.0776369	0.0363766	0.5447533
EARTH	2069-09-22 23:48	> 1 w	0.1093349	0.0046940	0.0988911
VENUS	2097-06-04 23:46	> 1 mo	0.0195899	0.0177672	0.2462387
EARTH	2102-05-04 08:18	> 1 mo	0.0384846	0.0384739	0.0453119
EARTH	2117-10-10 20:34	> 1 mo	0.0967283	0.0015698	24.6409090

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
40.43856758	267.22256959	0.00632362	MINIMUM
318.80521855	117.91248779	0.03533515	MINIMUM
359.36452608	192.10596138	0.28916384	SADDLE
359.60284847	12.58979285	1.71502054	SADDLE
179.86928367	12.99350445	1.99925202	SADDLE
179.93008952	193.02146058	3.99153800	MAXIMUM

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MOID Plots

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