Asteroids

2025SZ27 help

Last update: 2025-10-02 13:15 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.686

Aphelion (Q)

2.544

Eccentricity (e)

0.575

Inclination (i)

7.5

deg

Orbit period (P)

749.9

Earth MOID

0.00776

U parameter

7.9

Next Earth close approach

Date

2032-03-09

Nominal distance (from Earth center)

0.09709

14524097

Maximum Brightness

23.2

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.3

mag

Diameter

24 - 50*

Taxonomic type

Rotation period (T)

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

1.615394

1-sigma variation

0.001489

Unit

Eccentricity (e)

Value

0.575138

1-sigma variation

0.000490

Unit

Inclination (i)

Value

7.4639

1-sigma variation

0.0056

Unit

Long. of Ascending Node (Ω)

Value

14.2362

1-sigma variation

0.0004

Unit

Arg. of Perihelion (ω)

Value

78.4372

1-sigma variation

0.0020

Unit

Mean Anomaly (M)

Value

359.19776

1-sigma variation

0.00946

Unit

Perihelion distance

Value

0.686319

1-sigma variation

Unit

Aphelion distance

Value

2.544468

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.030290

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.220350

1-sigma variation

Unit

MOID

Value

0.007756

1-sigma variation

Unit

Orbit Period

Value

749.9217

1-sigma variation

Unit

U parameter

Value

7.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.21720E-6	7.29820E-7	8.31283E-6	4.80022E-7	-2.96528E-6	1.40838E-5
e	7.29820E-7	2.40231E-7	2.73643E-6	1.57799E-7	-9.75669E-7	4.63588E-6
i	8.31283E-6	2.73643E-6	3.12049E-5	1.74580E-6	-1.10435E-5	5.28069E-5
Ω	4.80022E-7	1.57799E-7	1.74580E-6	1.81359E-7	-7.45293E-7	3.04436E-6
ω	-2.96528E-6	-9.75669E-7	-1.10435E-5	-7.45293E-7	4.12641E-6	-1.88305E-5
M	1.40838E-5	4.63588E-6	5.28069E-5	3.04436E-6	-1.88305E-5	8.94619E-5

Date of computation: 2025-10-02 13:15 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

25.259

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

24 - 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

0.508328

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-09-29.453201

Unit

Source

[2]

Last Observation

Value

2025-10-02.184736

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

43 (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 2025SZ27 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	1951-09-25 11:37	> 1 mo	0.1460092	0.0139921	0.8164786
EARTH	1953-10-21 14:09	> 1 mo	0.1726673	0.0266795	0.6499269
EARTH	1960-03-18 18:31	> 1 w	0.0781875	0.0462640	0.3844513
EARTH	1990-10-08 10:48	> 1 w	0.0582487	0.0102943	0.1932179
EARTH	1997-03-19 03:44	> 1 w	0.0758209	0.0444029	0.1716404
EARTH	2025-10-04 04:28	< 1 min	0.0078924	0.0078727	0.0000066
EARTH	2032-03-09 14:07	> 1 d	0.0970876	0.0419878	0.0477168
EARTH	2062-09-26 05:48	> 1 w	0.1461317	0.0079951	0.3930333
EARTH	2064-10-26 01:24	> 1 mo	0.1906083	0.0269932	0.3241001
EARTH	2069-02-26 17:16	> 1 mo	0.1832368	0.0307194	0.3156367
EARTH	2071-03-25 20:28	> 1 w	0.1716276	0.0397567	0.3223706
EARTH	2099-09-28 14:11	> 1 w	0.1138257	0.0050025	0.1541953
EARTH	2106-03-01 16:41	> 1 w	0.1756076	0.0304762	0.1975118
EARTH	2108-03-26 13:02	> 1 w	0.1710588	0.0381328	0.2254039

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
311.58660958	270.62981486	0.00775602	MINIMUM
48.92733510	73.01361669	0.04356110	MINIMUM
0.56643320	352.55794554	0.31539628	SADDLE
180.09513566	171.26241890	1.54025406	SADDLE
359.84442788	171.19826309	1.70094527	SADDLE
179.83898645	351.12951640	3.52243614	MAXIMUM

Download:

MOID Plots

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