Asteroids

2025TC1 help

Last update: 2025-10-04 13:00 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

1.006

Aphelion (Q)

1.770

Eccentricity (e)

0.275

Inclination (i)

7.0

deg

Orbit period (P)

597.4

Earth MOID

0.02200

U parameter

7.7

Next Earth close approach

Date

2025-10-06

Nominal distance (from Earth center)

0.02833

4237759

Maximum Brightness

20.7

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.9

mag

Diameter

11 - 25*

Taxonomic type

Rotation period (T)

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.388212

1-sigma variation

0.000812

Unit

Eccentricity (e)

Value

0.275230

1-sigma variation

0.000401

Unit

Inclination (i)

Value

6.9696

1-sigma variation

0.0080

Unit

Long. of Ascending Node (Ω)

Value

12.3106

1-sigma variation

0.0012

Unit

Arg. of Perihelion (ω)

Value

23.9578

1-sigma variation

0.0294

Unit

Mean Anomaly (M)

Value

15.16505

1-sigma variation

0.01395

Unit

Perihelion distance

Value

1.006135

1-sigma variation

Unit

Aphelion distance

Value

1.770289

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.024958

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.713312

1-sigma variation

Unit

MOID

Value

0.021997

1-sigma variation

Unit

Orbit Period

Value

597.4233

1-sigma variation

Unit

U parameter

Value

7.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.60048E-7	3.25266E-7	6.23977E-6	1.00653E-6	-1.20112E-5	-3.11253E-6
e	3.25266E-7	1.61089E-7	3.13716E-6	4.93139E-7	-5.19911E-6	-1.91345E-6
i	6.23977E-6	3.13716E-6	6.38512E-5	9.29006E-6	-5.75561E-5	-5.89500E-5
Ω	1.00653E-6	4.93139E-7	9.29006E-6	1.54621E-6	-2.08927E-5	-3.38838E-6
ω	-1.20112E-5	-5.19911E-6	-5.75561E-5	-2.08927E-5	8.65695E-4	-2.84610E-4
M	-3.11253E-6	-1.91345E-6	-5.89500E-5	-3.38838E-6	-2.84610E-4	1.94631E-4

Date of computation: 2025-10-04 13:00 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

mag

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

0.624579

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-10-02.380034

Unit

Source

[2]

Last Observation

Value

2025-10-03.473883

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

19 (1)

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

Computation parameters

As seen from:

Initial Date: *

Final Date: *

Output option:

One line per time step

Time step:*

* - these fields are required

Close Approaches for 2025TC1 from 1950 to 2125

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
MARS	1955-11-07 22:52	> 1 mo	0.0388177	0.0067822	2.3124362
EARTH	1961-11-10 21:44	> 1 mo	0.1147836	0.0413329	3.2677493
EARTH	1984-10-09 03:51	> 1 w	0.0218943	0.0216845	0.0131392
EARTH	2002-11-23 14:51	> 1 w	0.1752559	0.0676267	0.0996545
EARTH	2025-10-06 10:46	5.3	0.0283277	0.0282154	0.0000374
EARTH	2043-09-26 12:51	> 1 w	0.0905928	0.0082335	0.0916240
MARS	2057-06-01 22:40	495.9	0.0411126	0.0006809	0.0249698
EARTH	2074-11-10 15:42	> 1 w	0.1078870	0.0399533	0.0568265
EARTH	2092-10-25 14:02	> 1 w	0.0601870	0.0011375	0.0798371
MARS	2095-01-14 10:44	> 1 d	0.0325534	0.0000000	0.0625483
EARTH	2110-11-21 15:44	> 1 w	0.1486057	0.0618895	0.0862427

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
345.18795525	276.33214985	0.02199685	MINIMUM
179.65122635	114.03126811	0.76521328	SADDLE
357.28971825	112.15267585	2.01323785	SADDLE
177.84192386	292.67585618	2.76332446	MAXIMUM

Download:

MOID Plots

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