Asteroids

2003LW2 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.977

Aphelion (Q)

2.716

Eccentricity (e)

0.471

Inclination (i)

2.2

deg

Orbit period (P)

916.5

Earth MOID

0.00170

U parameter

2.1

Next Earth close approach

Date

2026-06-14

Nominal distance (from Earth center)

0.079

11817677

Maximum Brightness

22.6

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.8

mag

Diameter

19 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2003-06-04

Observatory

Lincoln Laboratory ETS, New Mexico

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

1.846495

1-sigma variation

3.758E-7

Unit

Eccentricity (e)

Value

0.471035

1-sigma variation

2.358E-7

Unit

Inclination (i)

Value

2.2205

1-sigma variation

1.410E-5

Unit

Long. of Ascending Node (Ω)

Value

246.8119

1-sigma variation

2.846E-5

Unit

Arg. of Perihelion (ω)

Value

334.3811

1-sigma variation

0.0001

Unit

Mean Anomaly (M)

Value

291.89278

1-sigma variation

0.00018

Unit

Perihelion distance

Value

0.976731

1-sigma variation

Unit

Aphelion distance

Value

2.716259

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.006358

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

1.509909

1-sigma variation

Unit

MOID

Value

0.001697

1-sigma variation

Unit

Orbit Period

Value

916.4750

1-sigma variation

Unit

U parameter

Value

2.1

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.41209E-13	8.31810E-14	4.09972E-13	-7.77504E-12	-1.96266E-11	-6.62351E-11
e	8.31810E-14	5.56064E-14	8.80880E-13	-3.48705E-12	-1.67887E-11	-3.78335E-11
i	4.09972E-13	8.80880E-13	1.98781E-10	2.39161E-10	-7.28124E-10	-7.21187E-11
Ω	-7.77504E-12	-3.48705E-12	2.39161E-10	8.09934E-10	8.14195E-12	3.84800E-9
ω	-1.96266E-11	-1.67887E-11	-7.28124E-10	8.14195E-12	7.08322E-9	8.26240E-9
M	-6.62351E-11	-3.78335E-11	-7.21187E-11	3.84800E-9	8.26240E-9	3.12808E-8

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

25.779

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

19 - 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

6572

Unit

Source

[1]

Unobserved

Value

1599

Unit

Source

[1]

Normalized RMS of residuals

Value

0.553308

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2003-06-04.32665

Unit

Source

[2]

Last Observation

Value

2021-06-01.594894

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

70 (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 2003LW2 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	1993-03-28 17:16	1.3	0.0646606	0.0646443	0.0000054
EARTH	1998-04-26 04:43	1.8	0.0353448	0.0353432	0.0000005
EARTH	2003-06-01 05:15	< 1 min	0.0033098	0.0033097	0.0000000
EARTH	2021-05-29 06:59	< 1 min	0.0027478	0.0027477	0.0000000
EARTH	2026-06-14 18:18	1.5	0.0789963	0.0789703	0.0000087
EARTH	2104-03-16 06:19	3.8	0.1970225	0.1968930	0.0000432
EARTH	2109-03-29 21:33	7.1	0.0663472	0.0662543	0.0000310
EARTH	2114-04-17 20:48	4.9	0.0294212	0.0294155	0.0000019
EARTH	2119-05-18 23:00	< 1 min	0.0292321	0.0292293	0.0000009
EARTH	2124-05-29 08:56	5.0	0.0098471	0.0098231	0.0000080

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
16.84323379	146.20568141	0.00144973	MINIMUM
347.61563934	97.54146913	0.02857449	MINIMUM
359.56988215	117.41872981	0.03595176	SADDLE
180.51965243	299.60247875	1.72477350	SADDLE
1.49991365	300.67728873	1.96752718	SADDLE
180.58122000	119.64407967	3.72420669	MAXIMUM

Download:

MOID Plots

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