Asteroids

2025TN8 help

Last update: 2025-10-17 13:00 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.883

Aphelion (Q)

2.987

Eccentricity (e)

0.544

Inclination (i)

5.7

deg

Orbit period (P)

982.9

Earth MOID

0.00424

U parameter

7.6

Next Earth close approach

Date

2052-06-25

Nominal distance (from Earth center)

0.11567

17303627

Maximum Brightness

23.1

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

27 - 60*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-10-14

Observatory

ATLAS-MLO, Mauna Loa

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

1.934728

1-sigma variation

0.001567

Unit

Eccentricity (e)

Value

0.543831

1-sigma variation

0.000403

Unit

Inclination (i)

Value

5.7012

1-sigma variation

0.0031

Unit

Long. of Ascending Node (Ω)

Value

196.1056

1-sigma variation

0.0006

Unit

Arg. of Perihelion (ω)

Value

134.7125

1-sigma variation

0.0020

Unit

Mean Anomaly (M)

Value

27.70474

1-sigma variation

0.03554

Unit

Perihelion distance

Value

0.882563

1-sigma variation

Unit

Aphelion distance

Value

2.986892

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.204601

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.013569

1-sigma variation

Unit

MOID

Value

0.004236

1-sigma variation

Unit

Orbit Period

Value

982.9427

1-sigma variation

Unit

U parameter

Value

7.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.45598E-6	6.32050E-7	4.85993E-6	9.56689E-8	-2.96705E-6	-5.56955E-5
e	6.32050E-7	1.62667E-7	1.25054E-6	2.29072E-8	-7.65790E-7	-1.43323E-5
i	4.85993E-6	1.25054E-6	9.62346E-6	2.28862E-7	-5.83219E-6	-1.10230E-4
Ω	9.56689E-8	2.29072E-8	2.28862E-7	3.60802E-7	3.15921E-7	-2.36370E-6
ω	-2.96705E-6	-7.65790E-7	-5.83219E-6	3.15921E-7	4.16406E-6	6.70379E-5
M	-5.56955E-5	-1.43323E-5	-1.10230E-4	-2.36370E-6	6.70379E-5	1.26314E-3

Date of computation: 2025-10-17 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

24.984

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

27 - 60*

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

0.35278

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-10-14.524251

Unit

Source

[2]

Last Observation

Value

2025-10-16.607642

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

50 (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

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 2025TN8 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
EARTH	1960-08-08 06:59	> 1 mo	0.1462447	0.1384643	0.0145093
EARTH	1979-06-29 13:05	1312.5	0.1009119	0.1000126	0.0011974
EARTH	2006-10-20 10:30	> 1 w	0.0851846	0.0063044	0.1357658
EARTH	2025-10-10 23:17	< 1 min	0.0080394	0.0080231	0.0000054
EARTH	2052-06-25 09:57	> 1 w	0.1156676	0.1015789	0.0856717
EARTH	2060-09-20 04:00	> 1 mo	0.1037134	0.0256538	0.1444090
EARTH	2095-07-16 17:20	> 1 w	0.1209413	0.1052104	0.0450066
EARTH	2103-10-13 09:44	> 1 w	0.0103595	0.0078108	0.0666195

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
26.98497541	278.11890797	0.00423614	MINIMUM
330.73571450	178.13841708	0.10048731	MINIMUM
355.37326854	221.90310120	0.14865351	SADDLE
358.50127040	47.71663576	1.87068555	SADDLE
179.40290557	49.07709504	2.00110295	SADDLE
179.71851135	229.24235253	3.99702614	MAXIMUM

Download:

MOID Plots

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