Asteroids

2026TD help

Last update: 2026-10-03 13:45 UTC

Orbital Properties

Epoch

61400.0

MJD

Orbit type

Apollo

Perihelion (q)

0.807

Aphelion (Q)

1.344

Eccentricity (e)

0.250

Inclination (i)

17.3

deg

Orbit period (P)

407.2

Earth MOID

0.00488

U parameter

6.6

Next Earth close approach

Date

2028-03-29

Nominal distance (from Earth center)

0.04679

6999935

Maximum Brightness

23.2

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.9

mag

Diameter

11 - 25*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-10-01

Observatory

TransAstra TKO at e-EYE

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

1.075167

1-sigma variation

0.000088

Unit

Eccentricity (e)

Value

0.249878

1-sigma variation

0.000087

Unit

Inclination (i)

Value

17.2553

1-sigma variation

0.0061

Unit

Long. of Ascending Node (Ω)

Value

8.2938

1-sigma variation

1.631E-6

Unit

Arg. of Perihelion (ω)

Value

89.6181

1-sigma variation

0.0075

Unit

Mean Anomaly (M)

Value

13.91386

1-sigma variation

0.00722

Unit

Perihelion distance

Value

0.806506

1-sigma variation

Unit

Aphelion distance

Value

1.343828

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.006222

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.012074

1-sigma variation

Unit

MOID

Value

0.004876

1-sigma variation

Unit

Orbit Period

Value

407.2044

1-sigma variation

Unit

U parameter

Value

6.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	7.67685E-9	7.65574E-9	5.33737E-7	-9.29313E-11	-6.55117E-7	6.32704E-7
e	7.65574E-9	7.63612E-9	5.32371E-7	-9.27157E-11	-6.53132E-7	6.30956E-7
i	5.33737E-7	5.32371E-7	3.71294E-5	-6.42020E-9	-4.55340E-5	4.39882E-5
Ω	-9.29313E-11	-9.27157E-11	-6.42020E-9	2.65865E-12	7.92396E-9	-7.65900E-9
ω	-6.55117E-7	-6.53132E-7	-4.55340E-5	7.92396E-9	5.59293E-5	-5.39940E-5
M	6.32704E-7	6.30956E-7	4.39882E-5	-7.65900E-9	-5.39940E-5	5.21457E-5

Date of computation: 2026-10-03 13:45 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

26.894

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

11 - 25*

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

0.630958

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-10-01.708797

Unit

Source

[2]

Last Observation

Value

2026-10-02.834777

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

39 (12)

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 2026TD 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	1955-09-24 19:09	477.1	0.1843050	0.1619343	0.0074574
EARTH	1957-03-23 17:06	205.7	0.1434563	0.1131217	0.0101156
EARTH	1965-09-29 06:37	1434.6	0.0695275	0.0046982	0.0233074
EARTH	1967-03-27 08:40	1229.1	0.0365622	0.0075346	0.0229700
EARTH	1975-09-29 21:26	1302.2	0.0632412	0.0045082	0.0203517
EARTH	1977-03-26 13:44	1222.5	0.0469232	0.0069697	0.0241093
EARTH	1985-09-24 16:07	1335.4	0.1689374	0.0976293	0.0237702
EARTH	1987-03-23 21:42	342.2	0.1640844	0.0951416	0.0229891
EARTH	2006-10-08 18:22	70.2	0.1963147	0.1822905	0.0046748
EARTH	2008-04-05 07:25	174.0	0.1986596	0.1904287	0.0027437
EARTH	2016-10-03 08:54	390.1	0.0416478	0.0213469	0.0067735
EARTH	2018-03-30 15:18	415.3	0.0550241	0.0340638	0.0070309
EARTH	2026-10-02 09:15	< 1 s	0.0043490	0.0043445	0.0000015
EARTH	2028-03-29 14:14	33.2	0.0467917	0.0445234	0.0007564
EARTH	2045-09-25 00:54	649.1	0.1699253	0.1349295	0.0116653
EARTH	2047-03-24 17:39	389.1	0.1181642	0.0820450	0.0120509
EARTH	2055-10-05 20:42	642.5	0.0821295	0.0423122	0.0132922
EARTH	2057-04-02 13:44	697.2	0.1364390	0.0997884	0.0122228
EARTH	2074-09-30 10:44	25.2	0.0511335	0.0508682	0.0000888
EARTH	2076-03-27 20:41	67.1	0.0083411	0.0078825	0.0004750
EARTH	2084-10-04 15:56	> 1 d	0.0719380	0.0026849	0.0512684
EARTH	2086-04-01 23:12	> 1 d	0.1133259	0.0071522	0.0559116
EARTH	2113-09-28 09:10	> 1 d	0.1176891	0.0047242	0.0651516
EARTH	2115-03-27 00:27	> 1 d	0.0775014	0.0056587	0.0636637
EARTH	2123-10-03 19:12	979.0	0.0056668	0.0054276	0.0047186
EARTH	2125-03-31 03:54	> 1 d	0.0499267	0.0026056	0.2239129

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
285.39296133	266.78654185	0.00487593	MINIMUM
74.79417900	83.34853978	0.00944272	MINIMUM
0.08481564	355.15060712	0.32045765	SADDLE
180.10564923	174.96053219	0.48061962	SADDLE
359.71707308	174.66681156	1.80107539	SADDLE
179.64817491	354.58690829	2.30148831	MAXIMUM

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MOID Plots

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