Asteroids

2026TF1 help

Last update: 2026-10-09 13:46 UTC

Orbital Properties

Epoch

61400.0

MJD

Orbit type

Apollo

Perihelion (q)

0.823

Aphelion (Q)

1.899

Eccentricity (e)

0.395

Inclination (i)

1.6

deg

Orbit period (P)

580.2

Earth MOID

0.00701

U parameter

8.0

Next Earth close approach

Date

2034-07-23

Nominal distance (from Earth center)

0.19368

28974357

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

27.2

mag

Diameter

10 - 22*

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

1.361413

1-sigma variation

0.001290

Unit

Eccentricity (e)

Value

0.395188

1-sigma variation

0.000751

Unit

Inclination (i)

Value

1.5822

1-sigma variation

0.0027

Unit

Long. of Ascending Node (Ω)

Value

201.4348

1-sigma variation

0.0017

Unit

Arg. of Perihelion (ω)

Value

97.3671

1-sigma variation

0.0012

Unit

Mean Anomaly (M)

Value

84.40137

1-sigma variation

0.13544

Unit

Perihelion distance

Value

0.823399

1-sigma variation

Unit

Aphelion distance

Value

1.899427

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.207715

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.097798

1-sigma variation

Unit

MOID

Value

0.007014

1-sigma variation

Unit

Orbit Period

Value

580.2073

1-sigma variation

Unit

U parameter

Value

8.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.66286E-6	9.69052E-7	3.51782E-6	-2.09704E-6	2.85498E-7	-1.74647E-4
e	9.69052E-7	5.64746E-7	2.04985E-6	-1.22082E-6	1.61383E-7	-1.01777E-4
i	3.51782E-6	2.04985E-6	7.44671E-6	-4.46605E-6	6.74985E-7	-3.69479E-4
Ω	-2.09704E-6	-1.22082E-6	-4.46605E-6	2.83696E-6	-8.09899E-7	2.20302E-4
ω	2.85498E-7	1.61383E-7	6.74985E-7	-8.09899E-7	1.52601E-6	-3.01975E-5
M	-1.74647E-4	-1.01777E-4	-3.69479E-4	2.20302E-4	-3.01975E-5	1.83429E-2

Date of computation: 2026-10-09 13:46 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

27.201

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 - 22*

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

0.606853

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-10-04.116514

Unit

Source

[2]

Last Observation

Value

2026-10-08.298247

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

30 (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 2026TF1 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	1950-10-11 11:43	> 1 d	0.1848229	0.0067240	0.1052600
EARTH	1958-07-31 18:41	> 1 mo	0.1901502	0.1234094	0.0222787
MARS	1958-12-05 20:08	> 1 d	0.0417171	0.0405906	0.0279184
EARTH	1966-05-04 00:09	> 1 w	0.0669278	0.0118363	0.2155200
EARTH	1977-08-10 20:20	> 1 w	0.1806603	0.1506927	0.0099957
EARTH	1985-05-04 12:48	> 1 d	0.0581304	0.0119612	0.0914378
EARTH	1996-07-26 13:22	> 1 mo	0.1938274	0.1569399	0.0123200
EARTH	2004-04-26 22:41	> 1 w	0.1838202	0.0114962	0.1540300
EARTH	2007-10-08 12:19	> 1 w	0.1137518	0.0065523	0.1547401
EARTH	2015-07-01 05:55	> 1 mo	0.1841873	0.1149099	0.0231066
EARTH	2026-10-01 15:19	< 1 min	0.0143368	0.0142635	0.0000244
EARTH	2034-07-23 22:42	> 1 w	0.1936816	0.1863033	0.0024662
EARTH	2042-05-12 05:32	> 1 w	0.0248423	0.0129944	0.1251502
EARTH	2061-09-27 14:53	> 1 mo	0.0289686	0.0063209	0.3262648
EARTH	2069-07-16 19:19	> 1 mo	0.1936267	0.1247883	0.0236053
EARTH	2077-05-09 01:27	> 1 mo	0.0175588	0.0132106	0.9305644
EARTH	2088-09-06 17:16	> 1 mo	0.1307223	0.0018922	2.5969951
EARTH	2096-05-16 12:32	> 1 mo	0.0620308	0.0130076	4.1675074
EARTH	2107-09-26 08:17	> 1 mo	0.0564727	0.0027773	1.0116740
EARTH	2115-06-03 00:11	> 1 mo	0.1274957	0.0091080	1.3159920
EARTH	2126-10-02 02:16	> 1 mo	0.0061102	0.0055733	2.1679255

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
47.95567698	264.83275513	0.00701379	MINIMUM
310.89118251	125.58645516	0.01296421	MINIMUM
359.26597838	195.02020999	0.19263479	SADDLE
179.69438261	15.51801538	0.91630735	SADDLE
359.33570637	15.11920262	1.80709898	SADDLE
179.70246996	195.51942331	2.91356165	MAXIMUM

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MOID Plots

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