Asteroids

2026TC94 help

Last update: 2026-10-17 13:15 UTC

Orbital Properties

Epoch

61400.0

MJD

Orbit type

Apollo

Perihelion (q)

0.938

Aphelion (Q)

3.746

Eccentricity (e)

0.600

Inclination (i)

0.3

deg

Orbit period (P)

1309.1

Earth MOID

0.00023

U parameter

7.6

Next Earth close approach

Date

2026-10-18

Nominal distance (from Earth center)

0.01686

2522748

Maximum Brightness

19.5

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

26.9

mag

Diameter

11 - 25*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-10-15

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

2.342019

1-sigma variation

0.002545

Unit

Eccentricity (e)

Value

0.599523

1-sigma variation

0.000445

Unit

Inclination (i)

Value

0.2550

1-sigma variation

0.0001

Unit

Long. of Ascending Node (Ω)

Value

210.3127

1-sigma variation

0.0018

Unit

Arg. of Perihelion (ω)

Value

209.9649

1-sigma variation

0.0021

Unit

Mean Anomaly (M)

Value

11.55685

1-sigma variation

0.01760

Unit

Perihelion distance

Value

0.937926

1-sigma variation

Unit

Aphelion distance

Value

3.746113

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

2.148011

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.009561

1-sigma variation

Unit

MOID

Value

0.000228

1-sigma variation

Unit

Orbit Period

Value

1309.1342

1-sigma variation

Unit

U parameter

Value

7.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.47932E-6	1.13372E-6	3.51791E-7	2.79618E-6	-2.69325E-6	-4.47949E-5
e	1.13372E-6	1.98377E-7	6.15723E-8	4.88784E-7	-4.69251E-7	-7.83828E-6
i	3.51791E-7	6.15723E-8	2.11582E-8	8.78240E-8	-7.23819E-8	-2.43388E-6
Ω	2.79618E-6	4.88784E-7	8.78240E-8	3.21150E-6	-3.43876E-6	-1.92827E-5
ω	-2.69325E-6	-4.69251E-7	-7.23819E-8	-3.43876E-6	4.53124E-6	1.84161E-5
M	-4.47949E-5	-7.83828E-6	-2.43388E-6	-1.92827E-5	1.84161E-5	3.09718E-4

Date of computation: 2026-10-17 13:15 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

26.907

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

[-]

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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

1.0

Unit

Source

[1]

Normalized RMS of residuals

Value

0.445037

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-10-15.308582

Unit

Source

[2]

Last Observation

Value

2026-10-17.024891

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

37 (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 2026TC94 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	1961-10-26 20:17	> 1 mo	0.0078790	0.0003745	0.3853369
EARTH	1979-12-31 17:15	> 1 mo	0.0706347	0.0033877	0.3870485
EARTH	2026-10-18 02:56	< 1 min	0.0168635	0.0168299	0.0000112
EARTH	2070-01-02 03:19	> 1 mo	0.0721408	0.0041304	0.3949158
EARTH	2087-12-18 21:59	> 1 mo	0.0040863	0.0037978	0.1172709
EARTH	2116-12-17 18:30	> 1 mo	0.0160131	0.0040388	126.2411020

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
343.64660897	286.15071011	0.00022826	MINIMUM
14.66959106	346.38825192	0.00368081	MINIMUM
359.12892584	316.24421272	0.04965455	SADDLE
359.09593510	136.19421836	1.94854594	SADDLE
179.77727745	137.04503084	2.73541433	SADDLE
179.78205195	317.05127022	4.73357624	MAXIMUM

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MOID Plots

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

Level lines of the squared distance function

2026TC94

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS	TS
2061-10-24.103	74121.103	2.537	1.45 ± 0.000	8.05E6	2.01E-9	1.14E-1	-9.48	0
2062-10-22.981	74484.981	3.581	0.63 ± 0.004	9.03E4	2.13E-8	1.16E-1	-8.47	0
2080-10-24.741	81061.741	-2.948	0.82 ± 0.014	1.75E6	7.69E-9	1.12E-1	-9.09	0
2080-10-25.718	81062.718	-0.781	0.36 ± 0.022	2.61E6	3.40E-7	1.11E-1	-7.45	0
2083-10-26.890	82158.890	-3.117	1.02 ± 0.004	9.91E4	9.11E-8	1.10E-1	-8.05	0
2084-10-23.107	82521.107	3.779	0.28 ± 0.003	4.27E5	2.20E-9	1.17E-1	-9.65	0
2084-10-24.526	82522.526	-0.788	1.48 ± 0.089	1.56E7	1.40E-8	1.13E-1	-8.86	0
2086-10-24.366	83252.366	-3.017	0.96 ± 0.008	1.30E6	7.85E-9	1.13E-1	-9.13	0
2087-10-26.569	83619.569	2.397	0.88 ± 0.004	1.02E5	6.81E-7	1.12E-1	-7.20	0
2087-10-26.803	83619.803	-0.718	0.45 ± 0.004	9.69E4	9.52E-6	1.11E-1	-6.06	0
2087-10-26.897	83619.897	2.427	1.36 ± 0.004	7.56E5	4.61E-8	1.12E-1	-8.37	0
2098-10-25.499	87636.499	-2.067	0.66 ± 0.000	1.55E6	8.38E-8	1.13E-1	-8.17	0
2098-10-25.500	87636.500	-0.160	1.31 ± 0.006	4.77E5	1.53E-6	1.13E-1	-6.91	0
2107-10-27.505	90924.505	-0.804	1.27 ± 0.000	1.43E7	3.58E-8	1.12E-1	-8.60	0
2108-10-24.502	91287.502	-2.218	1.18 ± 0.010	9.61E5	1.01E-7	1.14E-1	-8.15	0
2112-10-23.355	92747.355	-0.247	1.04 ± 0.063	1.08E7	7.78E-8	1.16E-1	-8.27	0
2115-10-28.822	93847.822	-0.822	0.80 ± 0.008	1.52E6	5.12E-7	1.10E-1	-7.49	0
2115-10-28.929	93847.929	2.457	0.43 ± 0.253	3.47E7	1.66E-9	1.11E-1	-9.97	0
2115-10-29.004	93848.004	-0.818	0.89 ± 0.000	5.91E6	1.25E-7	1.10E-1	-8.10	0
2116-10-24.750	94209.750	0.216	0.21 ± 0.008	9.97E5	1.17E-6	1.16E-1	-7.12	0
2122-10-29.421	96405.421	-3.057	0.08 ± 0.000	6.13E7	1.91E-10	1.09E-1	-10.95	0
2126-10-24.695	97861.695	-0.229	1.22 ± 0.008	5.33E5	1.46E-6	1.15E-1	-7.07	n/a
2126-10-24.702	97861.702	-0.227	0.69 ± 0.007	2.80E5	3.77E-6	1.15E-1	-6.66	n/a


Based on 37 optical observations (of which 0 are rejected as outliers) from 2026/10/15.309 to 2026/10/17.025.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.54 and 1.54 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 5.0, Date of computation=20261017 133709.816 UTC.

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