Asteroids

2025LW help

Last update: 2026-03-17 23:26 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Aten

Perihelion (q)

0.636

Aphelion (Q)

1.271

Eccentricity (e)

0.333

Inclination (i)

4.6

deg

Orbit period (P)

340.1

Earth MOID

0.00420

U parameter

6.1

Next Earth close approach

Date

2027-09-28

Nominal distance (from Earth center)

0.17181

25701693

Maximum Brightness

23.1

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

24.9

mag

Diameter

28 - 60*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-06-14

Observatory

Pan-STARRS 2, 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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.953501

1-sigma variation

0.000029

Unit

Eccentricity (e)

Value

0.332539

1-sigma variation

0.000105

Unit

Inclination (i)

Value

4.5826

1-sigma variation

0.0019

Unit

Long. of Ascending Node (Ω)

Value

254.5130

1-sigma variation

0.0007

Unit

Arg. of Perihelion (ω)

Value

237.4974

1-sigma variation

0.0022

Unit

Mean Anomaly (M)

Value

114.88799

1-sigma variation

0.03285

Unit

Perihelion distance

Value

0.636424

1-sigma variation

Unit

Aphelion distance

Value

1.270578

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.018266

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.266278

1-sigma variation

Unit

MOID

Value

0.004199

1-sigma variation

Unit

Orbit Period

Value

340.0793

1-sigma variation

Unit

U parameter

Value

6.1

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	8.17434E-10	2.97761E-9	5.28934E-8	-2.03830E-8	6.26293E-8	-9.38489E-7
e	2.97761E-9	1.09823E-8	1.94721E-7	-7.33883E-8	2.25548E-7	-3.43333E-6
i	5.28934E-8	1.94721E-7	3.45365E-6	-1.30558E-6	4.01310E-6	-6.09491E-5
Ω	-2.03830E-8	-7.33883E-8	-1.30558E-6	5.14973E-7	-1.57896E-6	2.33078E-5
ω	6.26293E-8	2.25548E-7	4.01310E-6	-1.57896E-6	4.84887E-6	-7.16234E-5
M	-9.38489E-7	-3.43333E-6	-6.09491E-5	2.33078E-5	-7.16234E-5	1.07908E-3

Date of computation: 2026-03-17 23:26 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

24.851

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

28 - 60*

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

[-]

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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

282

Unit

Source

[1]

Normalized RMS of residuals

Value

0.495993

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-06-14.284688

Unit

Source

[2]

Last Observation

Value

2025-07-01.298726

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

48 (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

Note: Ephemerides requests are limited to a maximum of 1000 points and a final date not exceeding 2040/12/31 00:00.

Close Approaches for 2025LW from 1950 to 2126

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1957-06-11 15:51	> 1 mo	0.1207282	0.0075500	5.7247937
VENUS	1961-09-04 05:05	> 1 mo	0.0078701	0.0060672	0.8413583
EARTH	1969-10-04 23:45	> 1 mo	0.1333902	0.0666269	0.7721163
EARTH	1978-06-07 18:35	> 1 w	0.1162348	0.0031021	0.4719876
EARTH	1980-10-08 15:41	> 1 d	0.0697761	0.0690069	0.0475077
EARTH	1989-06-04 23:30	> 1 d	0.0275809	0.0026295	0.1361103
EARTH	1991-10-08 04:53	> 1 d	0.0853887	0.0683219	0.0722322
EARTH	2000-06-06 14:08	> 1 d	0.0945890	0.0036440	0.0375171
EARTH	2002-10-10 08:03	171.3	0.0768166	0.0709326	0.0047939
VENUS	2004-09-27 14:25	1239.0	0.0073942	0.0039556	0.0074417
VENUS	2006-08-03 03:51	605.1	0.0115575	0.0041899	0.0036313
EARTH	2012-06-04 17:11	170.7	0.0962343	0.0849786	0.0037525
EARTH	2014-09-22 04:32	1111.1	0.1834153	0.1784865	0.0016465
EARTH	2025-06-02 15:06	< 1 min	0.0172975	0.0172757	0.0000073
EARTH	2027-09-28 03:39	353.2	0.1718052	0.1694177	0.0007966
EARTH	2039-06-16 18:44	1268.6	0.1615453	0.1536450	0.0026348
EARTH	2041-10-09 11:24	214.5	0.0742597	0.0699464	0.0018123
VENUS	2050-04-09 05:00	1094.4	0.0198880	0.0022402	0.0066264
EARTH	2052-06-02 02:17	97.1	0.0106888	0.0035126	0.0034862
EARTH	2055-10-06 05:59	799.7	0.1670591	0.1475786	0.0065947
EARTH	2067-06-03 19:33	> 1 d	0.0880280	0.0050601	0.0462978
EARTH	2069-10-06 18:19	> 1 w	0.1500822	0.0629488	0.0421511
VENUS	2071-10-17 12:26	> 1 d	0.0203135	0.0003613	0.0637222
EARTH	2081-06-03 07:43	> 1 w	0.0369656	0.0029897	0.3851612
EARTH	2084-10-06 11:20	> 1 d	0.1537215	0.0680580	0.2071356
VENUS	2095-03-03 13:55	> 1 mo	0.0304172	0.0014438	0.4544513
EARTH	2096-06-12 00:36	> 1 mo	0.1440771	0.0041289	0.2214538
EARTH	2098-10-12 22:47	> 1 d	0.0742203	0.0658370	0.0124578
EARTH	2110-06-04 01:08	> 1 mo	0.0618652	0.0033807	1.1288491
EARTH	2112-10-10 01:35	> 1 mo	0.1395360	0.0636495	1.0426030
VENUS	2120-05-23 10:26	> 1 mo	0.0396647	0.0000676	1.3609161
EARTH	2124-06-03 10:59	> 1 d	0.0444144	0.0065808	0.0461182
EARTH	2126-10-11 21:50	> 1 mo	0.1283776	0.0668568	0.6410735

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
101.50627207	150.16131083	0.00379501	MINIMUM
263.81166072	276.64074318	0.06802805	MINIMUM
182.99917426	213.18824990	0.26653776	SADDLE
3.73969491	35.03446235	0.35410396	SADDLE
2.75987471	213.65429666	1.65099011	SADDLE
180.94406958	31.70188781	2.25528332	MAXIMUM

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MOID Plots

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

Level lines of the squared distance function

2025LW

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS
2119-06-05.560	95163.560	0.650	0.43 ± 0.507	5.52E7	1.62E-8	1.93E0	-8.01
2120-06-04.702	95528.702	0.624	1.18 ± 0.179	1.25E8	5.85E-9	1.95E0	-8.46
2122-06-05.475	96259.475	0.269	1.19 ± 0.215	6.25E7	1.12E-8	1.94E0	-8.19
2123-06-05.579	96624.579	0.666	1.41 ± 0.442	8.72E5	4.23E-7	1.93E0	-6.61


Based on 48 optical observations (of which 0 are rejected as outliers) from 2025/06/14.285 to 2025/07/01.299.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.54 and 1.54 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 5.0, Date of computation=20250805 130500.123 UTC.

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Download Impactor Table as: