Asteroids

2025SX26 help

Last update: 2025-10-11 14:45 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.898

Aphelion (Q)

2.014

Eccentricity (e)

0.383

Inclination (i)

1.1

deg

Orbit period (P)

641.8

Earth MOID

0.00114

U parameter

8.3

Next Earth close approach

Date

2032-12-01

Nominal distance (from Earth center)

0.0879

13150072

Maximum Brightness

37.6

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.1

mag

Diameter

16 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-09-29

Observatory

Pan-STARRS 2, 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

1.456207

1-sigma variation

0.002110

Unit

Eccentricity (e)

Value

0.383160

1-sigma variation

0.001014

Unit

Inclination (i)

Value

1.1393

1-sigma variation

0.0029

Unit

Long. of Ascending Node (Ω)

Value

117.7248

1-sigma variation

0.0512

Unit

Arg. of Perihelion (ω)

Value

316.3637

1-sigma variation

0.0529

Unit

Mean Anomaly (M)

Value

357.53436

1-sigma variation

0.01833

Unit

Perihelion distance

Value

0.898247

1-sigma variation

Unit

Aphelion distance

Value

2.014166

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.011981

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.703121

1-sigma variation

Unit

MOID

Value

0.001141

1-sigma variation

Unit

Orbit Period

Value

641.8491

1-sigma variation

Unit

U parameter

Value

8.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.45165E-6	2.13971E-6	6.15902E-6	1.05899E-4	-1.09265E-4	3.86704E-5
e	2.13971E-6	1.02848E-6	2.96013E-6	5.08702E-5	-5.24855E-5	1.85866E-5
i	6.15902E-6	2.96013E-6	8.52701E-6	1.47275E-4	-1.51984E-4	5.35153E-5
Ω	1.05899E-4	5.08702E-5	1.47275E-4	2.61883E-3	-2.70595E-3	9.21693E-4
ω	-1.09265E-4	-5.24855E-5	-1.51984E-4	-2.70595E-3	2.79612E-3	-9.51054E-4
M	3.86704E-5	1.85866E-5	5.35153E-5	9.21693E-4	-9.51054E-4	3.35953E-4

Date of computation: 2025-10-11 14:45 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

26.07

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

16 - 40*

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

0.281031

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-09-29.40792

Unit

Source

[2]

Last Observation

Value

2025-10-11.32486

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

15 (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 2025SX26 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	1972-01-03 04:34	> 1 mo	0.0574128	0.0035163	740.1683467
EARTH	1984-10-04 20:16	> 1 mo	0.1904592	0.0206788	710.1990229
EARTH	1996-01-20 23:34	> 1 mo	0.0017985	0.0002245	0.3806562
MARS	2016-10-18 10:40	> 1 d	0.0319442	0.0306058	0.0292134
EARTH	2025-10-16 02:11	< 1 min	0.0221404	0.0219730	0.0000558
EARTH	2032-12-01 18:42	> 1 mo	0.0879028	0.0800427	0.0037981
MARS	2036-11-08 20:55	> 1 d	0.0297401	0.0073509	0.0939245
EARTH	2040-01-21 04:13	> 1 w	0.0027299	0.0010799	0.1282545
EARTH	2051-11-12 03:10	> 1 mo	0.0807693	0.0224295	29.9241135
EARTH	2063-10-04 08:49	> 1 mo	0.0937117	0.0174380	112.2352100
EARTH	2081-01-28 13:24	> 1 mo	0.0615154	0.0012536	14.4258655
EARTH	2092-12-31 19:17	> 1 mo	0.0681136	0.0049690	50.5881383
EARTH	2104-10-30 03:47	> 1 mo	0.0586589	0.0181907	69.5014950
EARTH	2116-10-07 15:49	> 1 mo	0.0656601	0.0140469	5.6374891

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
32.26675955	19.29291656	0.00114108	MINIMUM
325.45906476	283.81808817	0.01974946	MINIMUM
358.41639876	330.94936014	0.08829029	SADDLE
179.40958674	152.16453345	0.99818278	SADDLE
358.69052166	151.36882947	1.91432138	SADDLE
179.46381719	332.20810950	2.99957307	MAXIMUM

Download:

MOID Plots

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