Asteroids

2025TZ4 help

Last update: 2025-10-15 15:00 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.932

Aphelion (Q)

2.646

Eccentricity (e)

0.479

Inclination (i)

2.8

deg

Orbit period (P)

874.2

Earth MOID

0.00304

U parameter

6.7

Next Earth close approach

Date

2069-01-08

Nominal distance (from Earth center)

0.11941

17864220

Maximum Brightness

24.4

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.6

mag

Diameter

13 - 29*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-10-12

Observatory

ATLAS-TDO

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

1.789257

1-sigma variation

0.000347

Unit

Eccentricity (e)

Value

0.478836

1-sigma variation

0.000106

Unit

Inclination (i)

Value

2.7702

1-sigma variation

0.0005

Unit

Long. of Ascending Node (Ω)

Value

199.1626

1-sigma variation

4.969E-5

Unit

Arg. of Perihelion (ω)

Value

220.6403

1-sigma variation

0.0006

Unit

Mean Anomaly (M)

Value

2.98327

1-sigma variation

0.00026

Unit

Perihelion distance

Value

0.932497

1-sigma variation

Unit

Aphelion distance

Value

2.646017

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.163658

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.013180

1-sigma variation

Unit

MOID

Value

0.003043

1-sigma variation

Unit

Orbit Period

Value

874.1935

1-sigma variation

Unit

U parameter

Value

6.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.20381E-7	3.66620E-8	1.69493E-7	1.69790E-8	-1.08736E-7	-7.94103E-8
e	3.66620E-8	1.11664E-8	5.16185E-8	5.17081E-9	-3.26713E-8	-2.43061E-8
i	1.69493E-7	5.16185E-8	2.39895E-7	2.41425E-8	-1.53551E-7	-1.11752E-7
Ω	1.69790E-8	5.17081E-9	2.41425E-8	2.46899E-9	-1.54739E-8	-1.11833E-8
ω	-1.08736E-7	-3.26713E-8	-1.53551E-7	-1.54739E-8	3.05689E-7	1.48750E-8
M	-7.94103E-8	-2.43061E-8	-1.11752E-7	-1.11833E-8	1.48750E-8	6.79692E-8

Date of computation: 2025-10-15 15:00 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

26.551

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

13 - 29*

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

0.628655

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-10-12.054827

Unit

Source

[2]

Last Observation

Value

2025-10-13.935206

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

72 (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 2025TZ4 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	1963-01-12 17:26	> 1 mo	0.1876547	0.0483714	0.5164214
EARTH	1979-12-12 07:16	> 1 mo	0.0524599	0.0468562	0.0510095
EARTH	1996-10-08 09:59	> 1 d	0.0415355	0.0018220	0.0406599
EARTH	2025-10-14 10:52	< 1 s	0.0091056	0.0091001	0.0000018
EARTH	2069-01-08 06:00	> 1 d	0.1194149	0.0471746	0.0507682
EARTH	2080-12-08 05:11	> 1 w	0.0572288	0.0495047	0.0078940
EARTH	2092-10-14 00:52	1433.2	0.0126190	0.0037747	0.0052280
EARTH	2111-10-17 09:37	> 1 mo	0.0053256	0.0037680	0.2048487
EARTH	2118-12-14 08:19	> 1 mo	0.0569909	0.0218568	0.2240239

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
337.47039575	282.36721160	0.00304265	MINIMUM
18.97817466	350.10097460	0.04534039	MINIMUM
0.97829692	320.78023462	0.06306270	SADDLE
179.60966938	137.98281346	1.63312530	SADDLE
358.71664963	137.04190295	1.94587178	SADDLE
179.51269957	317.93146167	3.63354889	MAXIMUM

Download:

MOID Plots

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