Asteroids

2026TK help

Last update: 2026-10-05 15:20 UTC

Orbital Properties

Epoch

61400.0

MJD

Orbit type

Aten

Perihelion (q)

0.721

Aphelion (Q)

1.013

Eccentricity (e)

0.169

Inclination (i)

2.4

deg

Orbit period (P)

294.9

Earth MOID

0.00799

U parameter

6.7

Next Earth close approach

Date

2030-08-25

Nominal distance (from Earth center)

0.16953

25360624

Maximum Brightness

28.5

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

4 - 9*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-10-02

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

0.867129

1-sigma variation

0.000057

Unit

Eccentricity (e)

Value

0.168795

1-sigma variation

0.000081

Unit

Inclination (i)

Value

2.4070

1-sigma variation

0.0014

Unit

Long. of Ascending Node (Ω)

Value

187.1484

1-sigma variation

0.0010

Unit

Arg. of Perihelion (ω)

Value

350.2538

1-sigma variation

0.0042

Unit

Mean Anomaly (M)

Value

299.10862

1-sigma variation

0.00795

Unit

Perihelion distance

Value

0.720762

1-sigma variation

Unit

Aphelion distance

Value

1.013496

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.275017

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.010019

1-sigma variation

Unit

MOID

Value

0.007991

1-sigma variation

Unit

Orbit Period

Value

294.9335

1-sigma variation

Unit

U parameter

Value

6.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.24544E-9	-4.59143E-9	-8.14904E-8	-5.68499E-8	-1.82315E-7	-3.92645E-7
e	-4.59143E-9	6.50234E-9	1.15072E-7	8.01992E-8	2.50846E-7	5.65737E-7
i	-8.14904E-8	1.15072E-7	2.05817E-6	1.43825E-6	4.80658E-6	9.52327E-6
Ω	-5.68499E-8	8.01992E-8	1.43825E-6	1.00619E-6	3.43472E-6	6.52538E-6
ω	-1.82315E-7	2.50846E-7	4.80658E-6	3.43472E-6	1.77627E-5	1.11737E-5
M	-3.92645E-7	5.65737E-7	9.52327E-6	6.52538E-6	1.11737E-5	6.32575E-5

Date of computation: 2026-10-05 15:20 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

28.986

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

4 - 9*

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

0.584242

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-10-02.337822

Unit

Source

[2]

Last Observation

Value

2026-10-03.941493

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

25 (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 2026TK 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	1951-08-29 02:15	1164.5	0.1596464	0.1361272	0.0079390
VENUS	1959-06-19 04:38	> 1 d	0.0313675	0.0217536	0.0386078
EARTH	1972-06-27 08:31	> 1 w	0.1861419	0.1560581	0.0100292
EARTH	1972-10-29 00:20	1349.6	0.0844662	0.0317486	0.0176047
EARTH	1976-09-25 21:26	> 1 w	0.0122648	0.0117389	0.0027169
EARTH	1980-08-26 12:06	137.3	0.1283757	0.0737646	0.0184637
VENUS	1982-10-21 16:07	> 1 d	0.0426635	0.0110422	0.0112563
VENUS	1993-04-19 12:41	> 1 d	0.0414998	0.0201994	0.0146841
EARTH	2001-07-08 23:28	> 1 d	0.1697413	0.1684168	0.0004424
EARTH	2001-10-26 22:30	34.3	0.0592517	0.0581928	0.0003556
EARTH	2005-09-05 06:15	> 1 d	0.0231392	0.0161967	0.0035730
EARTH	2022-10-27 14:16	40.2	0.1536424	0.1465559	0.0023631
EARTH	2026-10-03 14:03	< 1 min	0.0082116	0.0082001	0.0000038
EARTH	2030-08-25 18:30	36.3	0.1695253	0.1626278	0.0023003
EARTH	2047-10-12 03:17	> 1 d	0.0089400	0.0070866	0.0016504
EARTH	2051-09-28 22:58	> 1 w	0.0079301	0.0076434	0.0020728
EARTH	2055-08-28 23:11	> 1 d	0.0297707	0.0110655	0.0268564
EARTH	2059-08-24 10:03	498.9	0.1869768	0.0787800	0.0372610
VENUS	2076-04-26 00:14	> 1 mo	0.0349469	0.0179714	0.1486227
EARTH	2076-10-21 09:20	> 1 d	0.1887018	0.0153683	0.1914326
EARTH	2080-10-21 13:44	> 1 w	0.0592618	0.0128315	0.2787534
EARTH	2084-09-30 18:36	> 1 mo	0.0070312	0.0069673	0.0069300
EARTH	2088-08-25 04:08	> 1 mo	0.0346258	0.0101199	0.5951087
EARTH	2092-08-21 22:28	> 1 w	0.1886655	0.0470595	0.2525204
VENUS	2107-08-26 16:22	> 1 mo	0.0487774	0.0232750	1.6181629
EARTH	2117-06-18 11:49	> 1 mo	0.1890195	0.0395397	2.3362428
EARTH	2117-10-21 10:35	> 1 d	0.1067315	0.0142289	4.3493514
EARTH	2121-10-19 01:43	> 1 mo	0.0484870	0.0113549	2.2459270
EARTH	2125-10-19 03:44	> 1 mo	0.0496180	0.0108146	2.5365852

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
201.27462312	273.34049358	0.00799060	MINIMUM
7.21579786	81.75532016	0.27499658	SADDLE
7.29048526	261.83782666	1.72304174	SADDLE
185.16352045	79.68246525	2.00896244	MAXIMUM

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MOID Plots

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