Asteroids

2025SZ help

Last update: 2025-09-24 14:14 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Amor

Perihelion (q)

1.021

Aphelion (Q)

1.332

Eccentricity (e)

0.132

Inclination (i)

2.2

deg

Orbit period (P)

466.2

Earth MOID

0.02300

U parameter

7.0

Next Earth close approach

Date

2025-10-01

Nominal distance (from Earth center)

0.02316

3464365

Maximum Brightness

20.7

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

28.1

mag

Diameter

6 - 14*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-09-17

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

1.176576

1-sigma variation

0.000180

Unit

Eccentricity (e)

Value

0.132134

1-sigma variation

0.000115

Unit

Inclination (i)

Value

2.1873

1-sigma variation

0.0018

Unit

Long. of Ascending Node (Ω)

Value

183.2700

1-sigma variation

0.0014

Unit

Arg. of Perihelion (ω)

Value

198.2416

1-sigma variation

0.0112

Unit

Mean Anomaly (M)

Value

29.04218

1-sigma variation

0.00208

Unit

Perihelion distance

Value

1.021110

1-sigma variation

Unit

Aphelion distance

Value

1.332042

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.323802

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.024148

1-sigma variation

Unit

MOID

Value

0.023000

1-sigma variation

Unit

Orbit Period

Value

466.1528

1-sigma variation

Unit

U parameter

Value

7.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.24991E-8	2.08119E-8	3.29234E-7	2.45279E-7	-1.96861E-6	1.64485E-7
e	2.08119E-8	1.33319E-8	2.10900E-7	1.56690E-7	-1.25512E-6	1.01499E-7
i	3.29234E-7	2.10900E-7	3.33673E-6	2.47767E-6	-1.98570E-5	1.60767E-6
Ω	2.45279E-7	1.56690E-7	2.47767E-6	1.89136E-6	-1.53651E-5	1.58822E-6
ω	-1.96861E-6	-1.25512E-6	-1.98570E-5	-1.53651E-5	1.26543E-4	-1.50028E-5
M	1.64485E-7	1.01499E-7	1.60767E-6	1.58822E-6	-1.50028E-5	4.31563E-6

Date of computation: 2025-09-24 14:14 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

28.08

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

6 - 14*

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

0.327588

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-09-17.395928

Unit

Source

[2]

Last Observation

Value

2025-09-23.94671

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

22 (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 2025SZ 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	1956-09-16 20:59	> 1 mo	0.0501274	0.0068841	1.4564516
EARTH	1970-10-05 10:37	> 1 w	0.0243833	0.0204532	0.0200567
EARTH	1993-10-27 01:59	481.1	0.1078447	0.0919676	0.0052968
EARTH	2002-09-09 20:41	> 1 d	0.1086369	0.0316923	0.0256527
EARTH	2025-10-01 09:24	1.5	0.0231518	0.0230981	0.0000179
EARTH	2048-09-06 09:40	> 1 d	0.1574075	0.0828490	0.0248583
EARTH	2048-12-25 06:40	> 1 mo	0.1709892	0.1273706	0.0146800
EARTH	2062-10-16 16:23	> 1 d	0.0409252	0.0065020	0.0119219
EARTH	2071-09-11 10:28	> 1 d	0.1157779	0.0009977	0.0519513
EARTH	2094-07-25 07:29	> 1 mo	0.1714256	0.0371665	0.0499176
EARTH	2094-11-04 02:50	> 1 d	0.1598682	0.0159980	0.0786615
EARTH	2103-09-27 14:50	> 1 w	0.0334013	0.0166495	0.0288444
EARTH	2117-10-25 17:19	> 1 w	0.0659034	0.0070033	0.1553057

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
349.62655575	269.33250958	0.02300035	MINIMUM
174.85999511	94.95303368	0.32926835	SADDLE
352.76214158	92.90609619	2.02377551	SADDLE
174.37006909	274.52567165	2.33049996	MAXIMUM

Download:

MOID Plots

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