Asteroids

2026TC6 help

Last update: 2026-10-10 14:01 UTC

Orbital Properties

Epoch

61400.0

MJD

Orbit type

Aten

Perihelion (q)

0.404

Aphelion (Q)

1.090

Eccentricity (e)

0.459

Inclination (i)

8.0

deg

Orbit period (P)

235.8

Earth MOID

0.00967

U parameter

7.4

Next Earth close approach

Date

2026-10-12

Nominal distance (from Earth center)

0.02512

3757385

Maximum Brightness

19.6

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.1

mag

Diameter

16 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-10-08

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

0.746949

1-sigma variation

0.000109

Unit

Eccentricity (e)

Value

0.458847

1-sigma variation

0.000333

Unit

Inclination (i)

Value

7.9850

1-sigma variation

0.0095

Unit

Long. of Ascending Node (Ω)

Value

16.9020

1-sigma variation

0.0005

Unit

Arg. of Perihelion (ω)

Value

157.1581

1-sigma variation

0.0042

Unit

Mean Anomaly (M)

Value

348.12973

1-sigma variation

0.04821

Unit

Perihelion distance

Value

0.404214

1-sigma variation

Unit

Aphelion distance

Value

1.089685

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.024073

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.585557

1-sigma variation

Unit

MOID

Value

0.009666

1-sigma variation

Unit

Orbit Period

Value

235.7953

1-sigma variation

Unit

U parameter

Value

7.4

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.19581E-8	-3.64167E-8	-1.03353E-6	5.52276E-8	-4.40807E-7	-5.25169E-6
e	-3.64167E-8	1.11165E-7	3.15562E-6	-1.68849E-7	1.32239E-6	1.60609E-5
i	-1.03353E-6	3.15562E-6	8.95940E-5	-4.79651E-6	3.74830E-5	4.55987E-4
Ω	5.52276E-8	-1.68849E-7	-4.79651E-6	2.57352E-7	-1.98626E-6	-2.44240E-5
ω	-4.40807E-7	1.32239E-6	3.74830E-5	-1.98626E-6	1.77718E-5	1.88453E-4
M	-5.25169E-6	1.60609E-5	4.55987E-4	-2.44240E-5	1.88453E-4	2.32374E-3

Date of computation: 2026-10-10 14:01 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

26.066

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

16 - 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

[-]

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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

0.6

Unit

Source

[1]

Normalized RMS of residuals

Value

0.732926

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-10-08.298246

Unit

Source

[2]

Last Observation

Value

2026-10-10.151678

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

59 (4)

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 2026TC6 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
MERCURY	1951-07-22 04:50	> 1 w	0.0303498	0.0275520	0.0067911
EARTH	1955-09-06 06:43	> 1 d	0.1050871	0.1041446	0.0021562
EARTH	1957-10-15 16:46	66.2	0.0731332	0.0098747	0.0305838
EARTH	1964-08-21 23:16	40.2	0.1475432	0.1136186	0.0145682
EARTH	1966-10-01 09:14	> 1 d	0.0792106	0.0559280	0.0080531
MERCURY	1967-09-10 01:20	> 1 d	0.0304977	0.0273376	0.0033855
EARTH	1975-08-30 08:57	257.1	0.1015678	0.1004757	0.0003707
EARTH	1977-10-15 00:01	273.2	0.0274666	0.0130897	0.0051170
MERCURY	1983-10-21 07:20	> 1 d	0.0239833	0.0236320	0.0025896
EARTH	1984-08-22 05:24	3.6	0.1586906	0.1315205	0.0098750
MERCURY	1985-10-06 15:54	> 1 d	0.0342396	0.0314917	0.0055856
EARTH	1986-09-30 09:16	> 1 d	0.0818776	0.0605219	0.0073925
EARTH	1995-09-03 15:45	> 1 d	0.1027067	0.1021191	0.0014872
EARTH	1997-10-15 19:12	282.3	0.0645451	0.0103305	0.0258049
MERCURY	2003-10-19 23:34	> 1 d	0.0250236	0.0233216	0.0072325
EARTH	2004-08-22 14:24	521.9	0.1280030	0.1036278	0.0126236
MERCURY	2005-10-04 10:09	> 1 d	0.0375016	0.0322873	0.0125342
EARTH	2006-10-07 14:11	> 1 d	0.0549834	0.0171311	0.0142501
EARTH	2015-09-12 06:46	> 1 d	0.1045980	0.1043763	0.0003000
EARTH	2017-10-15 15:23	192.5	0.1184401	0.0861628	0.0107847
MERCURY	2023-10-18 13:28	> 1 d	0.0275866	0.0244879	0.0011516
EARTH	2024-08-24 04:55	118.5	0.1078518	0.1059005	0.0006857
MERCURY	2025-10-02 12:30	206.5	0.0449661	0.0432691	0.0005770
EARTH	2026-10-12 03:54	< 1 min	0.0251166	0.0250503	0.0000221
EARTH	2035-09-12 05:28	> 1 d	0.1045926	0.1045524	0.0000136
EARTH	2037-10-15 19:37	190.0	0.1085089	0.0713507	0.0124333
MERCURY	2039-12-04 10:26	> 1 d	0.0247661	0.0244249	0.0024623
MERCURY	2041-11-20 23:36	> 1 d	0.0431334	0.0331719	0.0136206
EARTH	2044-08-22 16:49	543.3	0.1254606	0.1041141	0.0109657
EARTH	2046-10-06 11:07	> 1 d	0.0607757	0.0240009	0.0134934
EARTH	2055-09-02 09:23	> 1 d	0.1013363	0.1005183	0.0021047
MERCURY	2056-01-27 09:42	> 1 w	0.0289698	0.0116003	0.0086722
EARTH	2057-10-15 17:10	715.3	0.0453727	0.0112778	0.0258621
EARTH	2064-08-22 14:08	244.0	0.1624355	0.1270780	0.0134458
EARTH	2066-09-28 09:01	> 1 d	0.0867491	0.0719089	0.0051635
MERCURY	2072-03-12 21:53	> 1 d	0.0249664	0.0249040	0.0003949
MERCURY	2074-02-28 11:41	534.9	0.0418562	0.0380130	0.0014426
EARTH	2075-08-29 13:41	222.5	0.0994465	0.0983479	0.0003725
EARTH	2077-10-15 00:25	293.8	0.0211258	0.0117537	0.0038422
EARTH	2084-08-22 18:12	39.7	0.1537615	0.1318315	0.0078537
EARTH	2086-10-02 05:54	> 1 d	0.0760509	0.0577220	0.0062993
MERCURY	2092-03-08 19:58	> 1 d	0.0249319	0.0248997	0.0007433
MERCURY	2094-02-22 09:19	> 1 d	0.0348131	0.0325221	0.0061890
EARTH	2095-09-09 11:49	> 1 d	0.1025994	0.1024335	0.0004747
EARTH	2097-10-16 01:51	298.1	0.1049160	0.0341638	0.0241061
EARTH	2104-08-25 18:43	> 1 d	0.1054262	0.0992792	0.0088488
EARTH	2106-10-14 00:58	> 1 d	0.0199892	0.0117175	0.0225564
MERCURY	2112-03-04 11:02	> 1 d	0.0300500	0.0246180	0.0211778
MERCURY	2114-02-19 18:41	> 1 d	0.0352154	0.0325109	0.0067412
EARTH	2115-09-18 05:03	> 1 d	0.1014755	0.0980454	0.0016362
EARTH	2117-10-16 15:42	308.9	0.1405967	0.1071524	0.0111796
EARTH	2124-08-25 10:33	533.3	0.1065769	0.1049354	0.0008485
EARTH	2126-10-12 16:55	1413.3	0.0311921	0.0135312	0.0072706

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
222.28934110	278.47319885	0.00966620	MINIMUM
148.53682795	232.61119420	0.10058980	MINIMUM
170.12738624	246.08487420	0.10561971	SADDLE
3.08870770	74.18110029	0.59089352	SADDLE
3.76755630	255.25750409	1.40748816	SADDLE
181.87837797	73.23098655	2.08316819	MAXIMUM

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MOID Plots

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