Asteroids

2026TC2 help

Last update: 2026-10-08 14:46 UTC

Orbital Properties

Epoch

61400.0

MJD

Orbit type

Aten

Perihelion (q)

0.277

Aphelion (Q)

1.568

Eccentricity (e)

0.700

Inclination (i)

8.2

deg

Orbit period (P)

323.4

Earth MOID

0.00082

U parameter

7.3

Next Earth close approach

Date

2034-10-01

Nominal distance (from Earth center)

0.17155

25662797

Maximum Brightness

25.9

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.9

mag

Diameter

18 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-10-05

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

0.922054

1-sigma variation

0.000166

Unit

Eccentricity (e)

Value

0.700098

1-sigma variation

0.000214

Unit

Inclination (i)

Value

8.1585

1-sigma variation

0.0054

Unit

Long. of Ascending Node (Ω)

Value

193.1431

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

319.4728

1-sigma variation

0.0036

Unit

Mean Anomaly (M)

Value

31.38623

1-sigma variation

0.00799

Unit

Perihelion distance

Value

0.276525

1-sigma variation

Unit

Aphelion distance

Value

1.567582

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.692070

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.005624

1-sigma variation

Unit

MOID

Value

0.000822

1-sigma variation

Unit

Orbit Period

Value

323.3945

1-sigma variation

Unit

U parameter

Value

7.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.76078E-8	3.54994E-8	8.93727E-7	-2.17046E-8	6.04875E-7	1.32700E-6
e	3.54994E-8	4.56558E-8	1.14944E-6	-2.79166E-8	7.78381E-7	1.70692E-6
i	8.93727E-7	1.14944E-6	2.89407E-5	-7.02993E-7	1.95974E-5	4.29741E-5
Ω	-2.17046E-8	-2.79166E-8	-7.02993E-7	1.70870E-8	-4.76083E-7	-1.04378E-6
ω	6.04875E-7	7.78381E-7	1.95974E-5	-4.76083E-7	1.32931E-5	2.91144E-5
M	1.32700E-6	1.70692E-6	4.29741E-5	-1.04378E-6	2.91144E-5	6.38242E-5

Date of computation: 2026-10-08 14:46 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

25.89

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

18 - 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

[-]

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

0.602407

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-10-04.317708

Unit

Source

[2]

Last Observation

Value

2026-10-07.200021

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

83 (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 2026TC2 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	1963-07-13 20:30	> 1 mo	0.1834960	0.1365148	21.1017018
EARTH	1966-10-02 18:55	> 1 mo	0.1215620	0.0006991	32.3937201
EARTH	1970-07-15 16:16	> 1 mo	0.1415218	0.1406837	2.6344057
VENUS	1972-01-24 10:25	> 1 mo	0.0141844	0.0026807	30.2568918
EARTH	1973-10-06 13:50	> 1 mo	0.0026049	0.0006890	1.1555528
EARTH	1981-09-29 17:25	> 1 w	0.1962618	0.0012981	0.3828121
EARTH	1985-07-18 03:23	> 1 d	0.1733809	0.1050647	0.0235853
VENUS	1986-03-18 22:36	> 1 d	0.0058288	0.0032966	0.0874021
EARTH	1996-10-03 17:25	> 1 d	0.0859661	0.0000537	0.0407453
VENUS	2006-07-07 20:58	584.2	0.0191105	0.0037063	0.0114694
EARTH	2011-10-06 11:37	955.6	0.0270538	0.0004265	0.0222384
EARTH	2023-07-13 18:04	95.4	0.1725607	0.1630907	0.0033670
EARTH	2026-10-07 06:06	< 1 s	0.0070741	0.0070647	0.0000032
EARTH	2034-10-01 06:18	672.3	0.1715452	0.1350048	0.0121802
EARTH	2038-07-19 23:25	885.5	0.1947047	0.1652224	0.0111251
EARTH	2046-07-14 08:26	855.3	0.1484663	0.1426995	0.0071564
VENUS	2048-12-16 14:10	> 1 d	0.0286604	0.0046152	0.0373433
EARTH	2049-10-09 01:37	223.7	0.1178259	0.0378263	0.0266730
EARTH	2057-10-04 13:55	6.4	0.0788195	0.0785383	0.0000937
VENUS	2063-02-12 00:12	1087.7	0.0396785	0.0048625	0.0227075
EARTH	2069-07-15 21:44	1277.8	0.1437938	0.1426852	0.0039740
EARTH	2072-10-08 19:41	605.2	0.1737929	0.0640861	0.0365865
EARTH	2080-10-06 16:30	> 1 d	0.0076998	0.0020450	0.0516350
VENUS	2091-06-01 06:08	> 1 mo	0.0407415	0.0052812	1.1278189
EARTH	2092-07-13 22:43	> 1 w	0.1559243	0.1429515	0.3689523
EARTH	2095-10-08 23:53	> 1 w	0.0536767	0.0025768	1.0237280
EARTH	2107-07-18 09:59	> 1 w	0.1468707	0.1422402	0.1902663
EARTH	2110-10-10 16:17	> 1 d	0.1531186	0.0044712	0.5720557
EARTH	2118-10-04 12:40	> 1 d	0.1260679	0.0030916	0.1439307
EARTH	2122-07-21 13:15	> 1 d	0.1912735	0.1541035	0.0426705
VENUS	2125-11-13 10:44	> 1 w	0.0392910	0.0063217	0.3488563

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
263.16633424	271.44135456	0.00082170	MINIMUM
97.66218406	189.56721837	0.14217395	MINIMUM
179.40017142	230.14143997	0.57035045	SADDLE
1.82480626	51.71700221	0.71402462	SADDLE
2.24327067	232.62799286	1.28467501	SADDLE
180.67667988	50.67105353	2.55396294	MAXIMUM

Download:

MOID Plots

Click on the images to zoom-in and zoom-out