Asteroids

2025SY10 help

Last update: 2025-09-29 16:33 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.847

Aphelion (Q)

1.773

Eccentricity (e)

0.353

Inclination (i)

14.6

deg

Orbit period (P)

547.6

Earth MOID

0.03737

U parameter

8.2

Next Earth close approach

Date

2028-10-04

Nominal distance (from Earth center)

0.03762

5627771

Maximum Brightness

20.9

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

2025-09-25

Observatory

Mt. Lemmon Survey

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

1.309855

1-sigma variation

0.001490

Unit

Eccentricity (e)

Value

0.353345

1-sigma variation

0.000871

Unit

Inclination (i)

Value

14.5583

1-sigma variation

0.0322

Unit

Long. of Ascending Node (Ω)

Value

184.7155

1-sigma variation

0.0009

Unit

Arg. of Perihelion (ω)

Value

256.8316

1-sigma variation

0.0228

Unit

Mean Anomaly (M)

Value

354.81951

1-sigma variation

0.03679

Unit

Perihelion distance

Value

0.847024

1-sigma variation

Unit

Aphelion distance

Value

1.772686

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.248122

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.058354

1-sigma variation

Unit

MOID

Value

0.037368

1-sigma variation

Unit

Orbit Period

Value

547.5621

1-sigma variation

Unit

U parameter

Value

8.2

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.21902E-6	1.29700E-6	4.79694E-5	-1.40033E-6	-3.38832E-5	5.48007E-5
e	1.29700E-6	7.58129E-7	2.80340E-5	-8.18300E-7	-1.98014E-5	3.20319E-5
i	4.79694E-5	2.80340E-5	1.03748E-3	-3.02962E-5	-7.32744E-4	1.18448E-3
Ω	-1.40033E-6	-8.18300E-7	-3.02962E-5	8.84992E-7	2.13960E-5	-3.45748E-5
ω	-3.38832E-5	-1.98014E-5	-7.32744E-4	2.13960E-5	5.17710E-4	-8.36719E-4
M	5.48007E-5	3.20319E-5	1.18448E-3	-3.45748E-5	-8.36719E-4	1.35342E-3

Date of computation: 2025-09-29 16:33 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

26.13

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

0.453325

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-09-25.225068

Unit

Source

[2]

Last Observation

Value

2025-09-29.25386

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

29 (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 2025SY10 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	1987-03-03 07:11	> 1 w	0.1597713	0.1344861	0.1354724
EARTH	1990-03-01 09:42	> 1 d	0.1365715	0.1344919	0.0377156
EARTH	1993-02-28 01:46	> 1 d	0.1383735	0.1345115	0.0465601
EARTH	1996-02-28 12:55	1270.1	0.1598506	0.1343912	0.1022542
EARTH	1999-03-01 04:23	> 1 d	0.1938626	0.1367748	0.1286948
EARTH	2010-10-18 12:07	> 1 w	0.1839243	0.0081402	0.1397537
EARTH	2013-10-13 02:43	> 1 w	0.1402332	0.0259347	0.1217743
EARTH	2016-10-09 12:17	> 1 d	0.0988275	0.0333926	0.0944753
EARTH	2019-10-07 23:39	> 1 d	0.0675627	0.0361123	0.0582001
EARTH	2022-10-06 04:22	> 1 d	0.0480080	0.0373024	0.0201515
EARTH	2025-10-05 00:58	< 1 min	0.0401702	0.0399016	0.0000895
EARTH	2028-10-04 00:20	> 1 d	0.0376193	0.0376079	0.0000354
EARTH	2031-10-03 17:23	> 1 d	0.0420058	0.0374188	0.0407089
EARTH	2034-10-01 12:45	> 1 w	0.0675111	0.0367747	0.1469233
EARTH	2037-09-28 15:14	> 1 w	0.1148425	0.0348843	0.2286373
EARTH	2040-09-25 04:51	> 1 w	0.1773434	0.0315462	0.2780658
EARTH	2123-03-07 09:20	> 1 mo	0.1979402	0.1280266	0.7537603

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
307.97314195	270.56173115	0.03736775	MINIMUM
58.08259716	57.72169045	0.13387787	MINIMUM
6.14901956	349.20996614	0.26712278	SADDLE
182.09662496	161.12644250	0.82529911	SADDLE
0.11110249	160.40092161	1.85002906	SADDLE
178.61376374	338.63063843	2.73810121	MAXIMUM

Download:

MOID Plots

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