Asteroids

2025ST6 help

Last update: 2025-09-25 13:26 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.586

Aphelion (Q)

3.376

Eccentricity (e)

0.704

Inclination (i)

4.8

deg

Orbit period (P)

1018.4

Earth MOID

0.01834

U parameter

8.1

Next Earth close approach

Date

2025-09-28

Nominal distance (from Earth center)

0.01883

2817598

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.4

mag

Diameter

22 - 50*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-09-23

Observatory

Pan-STARRS 1, Haleakala

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

1.980957

1-sigma variation

0.003476

Unit

Eccentricity (e)

Value

0.704323

1-sigma variation

0.000627

Unit

Inclination (i)

Value

4.7633

1-sigma variation

0.0051

Unit

Long. of Ascending Node (Ω)

Value

172.2212

1-sigma variation

0.0019

Unit

Arg. of Perihelion (ω)

Value

283.1490

1-sigma variation

0.0024

Unit

Mean Anomaly (M)

Value

2.22816

1-sigma variation

0.00165

Unit

Perihelion distance

Value

0.585724

1-sigma variation

Unit

Aphelion distance

Value

3.376190

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.134517

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.182471

1-sigma variation

Unit

MOID

Value

0.018336

1-sigma variation

Unit

Orbit Period

Value

1018.3824

1-sigma variation

Unit

U parameter

Value

8.1

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.20796E-5	2.17965E-6	1.77167E-5	6.49073E-6	-8.21258E-6	5.74427E-6
e	2.17965E-6	3.93297E-7	3.19679E-6	1.17118E-6	-1.48183E-6	1.03650E-6
i	1.77167E-5	3.19679E-6	2.59912E-5	9.52485E-6	-1.20514E-5	8.42345E-6
Ω	6.49073E-6	1.17118E-6	9.52485E-6	3.49230E-6	-4.41837E-6	3.08561E-6
ω	-8.21258E-6	-1.48183E-6	-1.20514E-5	-4.41837E-6	5.59571E-6	-3.90403E-6
M	5.74427E-6	1.03650E-6	8.42345E-6	3.08561E-6	-3.90403E-6	2.73195E-6

Date of computation: 2025-09-25 13:26 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

25.383

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

22 - 50*

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

0.709519

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-09-16.475513

Unit

Source

[2]

Last Observation

Value

2025-09-25.15976

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

43 (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 2025ST6 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	1958-09-27 22:25	> 1 w	0.0150519	0.0139847	0.1010532
VENUS	1961-08-10 03:50	> 1 mo	0.0314019	0.0135587	1.0131002
EARTH	1972-09-17 02:09	> 1 mo	0.1876614	0.0134167	0.7522403
VENUS	1997-11-25 21:36	> 1 w	0.0476569	0.0159671	0.3787178
EARTH	2023-03-17 16:00	> 1 d	0.1261257	0.0201439	0.0457482
EARTH	2025-09-28 07:46	< 1 min	0.0188345	0.0187827	0.0000173
EARTH	2076-03-29 09:28	> 1 mo	0.0638899	0.0222423	0.8280370
EARTH	2090-03-18 04:00	> 1 mo	0.1197716	0.0236456	0.4965981
EARTH	2092-10-04 01:06	> 1 mo	0.0780034	0.0246486	0.7058489
EARTH	2104-03-17 02:57	> 1 mo	0.1412963	0.0272757	1.3892639
EARTH	2106-09-30 21:01	> 1 mo	0.0261190	0.0255908	0.3059664
EARTH	2120-09-21 14:14	> 1 mo	0.1549410	0.0251502	14.2019132

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
314.41665446	264.50351759	0.01833638	MINIMUM
45.11324738	82.87675320	0.01876088	MINIMUM
359.59693974	353.33292960	0.40264840	SADDLE
359.75509980	173.70927890	1.60257274	SADDLE
179.93083884	174.04965437	2.36287864	SADDLE
179.98986773	354.07549493	4.35733267	MAXIMUM

Download:

MOID Plots

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