Asteroids

2025SN29 help

Last update: 2025-10-05 13:00 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.967

Aphelion (Q)

1.986

Eccentricity (e)

0.345

Inclination (i)

11.3

deg

Orbit period (P)

655.3

Earth MOID

0.02556

U parameter

7.9

Next Earth close approach

Date

2068-12-03

Nominal distance (from Earth center)

0.19052

28501778

Maximum Brightness

25.6

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

2025-09-30

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

1.476509

1-sigma variation

0.001391

Unit

Eccentricity (e)

Value

0.344754

1-sigma variation

0.000625

Unit

Inclination (i)

Value

11.2659

1-sigma variation

0.0155

Unit

Long. of Ascending Node (Ω)

Value

14.5724

1-sigma variation

0.0014

Unit

Arg. of Perihelion (ω)

Value

40.9621

1-sigma variation

0.0098

Unit

Mean Anomaly (M)

Value

5.09775

1-sigma variation

0.00160

Unit

Perihelion distance

Value

0.967476

1-sigma variation

Unit

Aphelion distance

Value

1.985543

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.032724

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.757343

1-sigma variation

Unit

MOID

Value

0.025563

1-sigma variation

Unit

Orbit Period

Value

655.3190

1-sigma variation

Unit

U parameter

Value

7.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.93476E-6	8.68899E-7	2.15953E-5	1.89833E-6	-1.35176E-5	2.05758E-6
e	8.68899E-7	3.90236E-7	9.69901E-6	8.52350E-7	-6.06467E-6	9.21728E-7
i	2.15953E-5	9.69901E-6	2.41069E-4	2.11800E-5	-1.50625E-4	2.28684E-5
Ω	1.89833E-6	8.52350E-7	2.11800E-5	1.86559E-6	-1.33404E-5	2.04824E-6
ω	-1.35176E-5	-6.06467E-6	-1.50625E-4	-1.33404E-5	9.69236E-5	-1.53279E-5
M	2.05758E-6	9.21728E-7	2.28684E-5	2.04824E-6	-1.53279E-5	2.55396E-6

Date of computation: 2025-10-05 13:00 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

26.125

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

0.483282

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-09-30.425422

Unit

Source

[2]

Last Observation

Value

2025-10-05.286028

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 2025SN29 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	1955-10-07 15:55	> 1 w	0.0544551	0.0221183	0.0748679
MARS	2004-10-09 14:19	> 1 d	0.0458193	0.0255585	0.0682939
EARTH	2007-11-24 04:59	> 1 w	0.1722711	0.1015819	0.0724984
EARTH	2016-10-19 14:10	> 1 w	0.0595794	0.0194398	0.0674768
EARTH	2025-10-10 08:12	< 1 min	0.0319234	0.0317766	0.0000489
EARTH	2068-12-03 11:48	> 1 mo	0.1905226	0.1330001	0.1752215
EARTH	2077-10-17 19:24	> 1 mo	0.0484070	0.0231329	0.2372760
EARTH	2086-10-05 23:12	> 1 w	0.0754066	0.0221650	0.1228562
MARS	2121-05-24 17:35	> 1 w	0.0418783	0.0187681	0.5343326

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
334.07813800	278.60926929	0.02556298	MINIMUM
182.14224957	134.81197861	0.99008249	SADDLE
359.48447655	133.70203813	1.97619082	SADDLE
178.02261317	311.93606980	2.96925961	MAXIMUM

Download:

MOID Plots

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