Asteroids

2025DW3 help

Last update: 2025-09-10 00:30 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.912

Aphelion (Q)

1.524

Eccentricity (e)

0.251

Inclination (i)

25.0

deg

Orbit period (P)

491.1

Earth MOID

0.04408

U parameter

7.1

Next Earth close approach

Date

2029-02-22

Nominal distance (from Earth center)

0.15394

23028776

Maximum Brightness

21.6

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

70 - 150*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-02-21

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

1.218164

1-sigma variation

0.000235

Unit

Eccentricity (e)

Value

0.251271

1-sigma variation

0.000137

Unit

Inclination (i)

Value

24.9643

1-sigma variation

0.0096

Unit

Long. of Ascending Node (Ω)

Value

331.2069

1-sigma variation

0.0013

Unit

Arg. of Perihelion (ω)

Value

113.2330

1-sigma variation

0.0140

Unit

Mean Anomaly (M)

Value

245.74223

1-sigma variation

0.08157

Unit

Perihelion distance

Value

0.912075

1-sigma variation

Unit

Aphelion distance

Value

1.524253

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.254978

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.048814

1-sigma variation

Unit

MOID

Value

0.044075

1-sigma variation

Unit

Orbit Period

Value

491.0853

1-sigma variation

Unit

U parameter

Value

7.1

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	5.54481E-8	3.21440E-8	2.26867E-6	3.08953E-7	3.29490E-6	-1.92071E-5
e	3.21440E-8	1.86351E-8	1.31522E-6	1.79111E-7	1.90992E-6	-1.11345E-5
i	2.26867E-6	1.31522E-6	9.28520E-5	1.26433E-5	1.34772E-4	-7.85831E-4
Ω	3.08953E-7	1.79111E-7	1.26433E-5	1.72180E-6	1.83554E-5	-1.07018E-4
ω	3.29490E-6	1.90992E-6	1.34772E-4	1.83554E-5	1.95869E-4	-1.14139E-3
M	-1.92071E-5	-1.11345E-5	-7.85831E-4	-1.07018E-4	-1.14139E-3	6.65330E-3

Date of computation: 2025-09-10 00:30 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

22.984

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

70 - 150*

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

216

Unit

Source

[1]

Normalized RMS of residuals

Value

0.282045

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-02-21.492986

Unit

Source

[2]

Last Observation

Value

2025-03-21.03049

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

26 (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 2025DW3 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	1951-02-19 02:16	> 1 d	0.0577501	0.0454839	0.0296335
EARTH	1986-02-13 23:38	> 1 d	0.1483511	0.0434750	0.0573426
EARTH	1990-02-20 00:35	> 1 d	0.0807258	0.0444050	0.0492586
EARTH	2025-02-15 18:28	< 1 min	0.0784621	0.0783690	0.0000311
EARTH	2029-02-22 16:26	360.0	0.1539379	0.1329961	0.0070244
EARTH	2064-02-17 14:57	> 1 d	0.0537522	0.0444189	0.0349830
EARTH	2068-02-24 13:48	> 1 d	0.1806189	0.0403689	0.0758425
EARTH	2103-02-17 07:30	> 1 d	0.0825105	0.0435803	0.1426981
EARTH	2107-02-23 16:50	> 1 d	0.1349365	0.0419947	0.1576423

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
51.79979012	46.01927607	0.04445032	MINIMUM
276.45751391	243.34869519	0.21308181	MINIMUM
340.85061791	318.18495355	0.41817142	SADDLE
164.70359275	151.14183702	0.72414194	SADDLE
352.62781807	154.51758780	1.88644394	SADDLE
186.74721724	349.71809115	2.46298182	MAXIMUM

Download:

MOID Plots

Click on the images to zoom-in and zoom-out