Asteroids

2025DW2 help

Last update: 2025-02-23 13:00 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.858

Aphelion (Q)

2.050

Eccentricity (e)

0.410

Inclination (i)

18.8

deg

Orbit period (P)

640.4

Earth MOID

0.00885

U parameter

7.8

Next Earth close approach

Date

2032-02-25

Nominal distance (from Earth center)

0.08073

12077770

Maximum Brightness

25.2

mag

Risk

Object is not in risk list

Object is in priority list

Physical Properties

Absolute Magnitude (H)

27.8

mag

Diameter

7 - 16*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-02-21

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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.453943

1-sigma variation

0.001104

Unit

Eccentricity (e)

Value

0.409829

1-sigma variation

0.000490

Unit

Inclination (i)

Value

18.7892

1-sigma variation

0.0167

Unit

Long. of Ascending Node (Ω)

Value

152.0405

1-sigma variation

0.0002

Unit

Arg. of Perihelion (ω)

Value

300.5750

1-sigma variation

0.0114

Unit

Mean Anomaly (M)

Value

66.54978

1-sigma variation

0.08629

Unit

Perihelion distance

Value

0.858075

1-sigma variation

Unit

Aphelion distance

Value

2.049811

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.011731

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.518097

1-sigma variation

Unit

MOID

Value

0.008854

1-sigma variation

Unit

Orbit Period

Value

640.3530

1-sigma variation

Unit

U parameter

Value

7.8

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.21844E-6	5.41210E-7	1.83902E-5	2.40270E-7	1.25556E-5	-9.52479E-5
e	5.41210E-7	2.40398E-7	8.16832E-6	1.06718E-7	5.57653E-6	-4.23073E-5
i	1.83902E-5	8.16832E-6	2.77660E-4	3.62819E-6	1.89562E-4	-1.43761E-3
Ω	2.40270E-7	1.06718E-7	3.62819E-6	4.74149E-8	2.47709E-6	-1.87826E-5
ω	1.25556E-5	5.57653E-6	1.89562E-4	2.47709E-6	1.29487E-4	-9.81519E-4
M	-9.52479E-5	-4.23073E-5	-1.43761E-3	-1.87826E-5	-9.81519E-4	7.44571E-3

Date of computation: 2025-02-22 19:30 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

27.829

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

7 - 16*

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

0.748624

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-02-20.521199

Unit

Source

[2]

Last Observation

Value

2025-02-22.237941

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

17 (1)

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 2025DW2 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	1960-02-16 20:24	> 1 w	0.0526374	0.0091572	0.2227090
EARTH	1967-02-26 17:32	> 1 w	0.1094883	0.0062492	0.2932981
EARTH	2018-02-06 09:04	> 1 d	0.1616035	0.0201588	0.0490072
EARTH	2025-02-19 13:34	< 1 s	0.0097427	0.0097140	0.0000096
EARTH	2032-02-25 12:33	> 1 d	0.0807349	0.0062138	0.0504843
EARTH	2039-03-03 21:37	> 1 d	0.1997074	0.0030365	0.0795481
EARTH	2111-02-12 20:23	> 1 w	0.1120853	0.0024404	0.2022323
EARTH	2118-02-19 09:03	> 1 w	0.0277450	0.0067051	0.1646816
EARTH	2125-02-19 13:59	> 1 w	0.0216548	0.0066887	0.3167108

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
39.74448918	48.12005494	0.00885360	MINIMUM
303.89480401	270.73192241	0.25842533	MINIMUM
341.66321277	323.17357440	0.32082461	SADDLE
174.50952919	168.01790860	1.11266586	SADDLE
356.44952732	166.39558785	1.85470870	SADDLE
181.89950824	352.97557063	3.00776623	MAXIMUM

Download:

MOID Plots

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