Asteroids

2018LU2 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.818

Aphelion (Q)

1.611

Eccentricity (e)

0.326

Inclination (i)

6.9

deg

Orbit period (P)

488.7

Earth MOID

0.00462

U parameter

6.0

Next Earth close approach

Date

2026-06-14

Nominal distance (from Earth center)

0.12415

18572061

Maximum Brightness

25.3

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.8

mag

Diameter

12 - 27*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2018-06-07

Observatory

Palomar Mountain--ZTF

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

1.214202

1-sigma variation

0.000032

Unit

Eccentricity (e)

Value

0.326404

1-sigma variation

0.000067

Unit

Inclination (i)

Value

6.9481

1-sigma variation

0.0031

Unit

Long. of Ascending Node (Ω)

Value

253.6368

1-sigma variation

0.0014

Unit

Arg. of Perihelion (ω)

Value

284.2549

1-sigma variation

0.0173

Unit

Mean Anomaly (M)

Value

252.57277

1-sigma variation

0.12972

Unit

Perihelion distance

Value

0.817882

1-sigma variation

Unit

Aphelion distance

Value

1.610521

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.011851

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.194013

1-sigma variation

Unit

MOID

Value

0.004618

1-sigma variation

Unit

Orbit Period

Value

488.6913

1-sigma variation

Unit

U parameter

Value

6.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.01179E-9	-2.13944E-9	-9.71103E-8	-4.50003E-8	5.50680E-7	4.12613E-6
e	-2.13944E-9	4.52394E-9	2.05343E-7	9.51545E-8	-1.16443E-6	-8.72477E-6
i	-9.71103E-8	2.05343E-7	9.32069E-6	4.31921E-6	-5.28541E-5	-3.96021E-4
Ω	-4.50003E-8	9.51545E-8	4.31921E-6	2.00166E-6	-2.44923E-5	-1.83514E-4
ω	5.50680E-7	-1.16443E-6	-5.28541E-5	-2.44923E-5	2.99718E-4	2.24571E-3
M	4.12613E-6	-8.72477E-6	-3.96021E-4	-1.83514E-4	2.24571E-3	1.68266E-2

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

26.752

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

12 - 27*

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

2647

Unit

Source

[1]

Normalized RMS of residuals

Value

0.698999

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2018-06-07.30821

Unit

Source

[2]

Last Observation

Value

2018-06-22.404606

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

42 (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 2018LU2 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	1957-01-29 15:46	> 1 w	0.1665048	0.1065614	0.0202018
EARTH	1961-01-05 17:37	> 1 d	0.0930095	0.0585897	0.0189081
EARTH	1964-12-31 20:16	> 1 d	0.0607806	0.0601949	0.0026686
EARTH	1968-12-27 08:25	1365.3	0.1160611	0.0693558	0.0182605
EARTH	2010-06-17 04:56	452.1	0.1726436	0.1528047	0.0066140
EARTH	2014-06-11 15:33	345.3	0.0757242	0.0637682	0.0039870
EARTH	2018-06-06 11:39	< 1 s	0.0039657	0.0039620	0.0000013
EARTH	2022-06-09 05:10	387.7	0.0379555	0.0262606	0.0039097
EARTH	2026-06-14 13:53	224.4	0.1241466	0.1152568	0.0029636
EARTH	2068-12-26 01:10	669.0	0.1776691	0.1473507	0.0102435
EARTH	2072-12-30 15:37	798.5	0.0939421	0.0720705	0.0084339
EARTH	2077-01-03 18:48	875.7	0.0625841	0.0619494	0.0014509
EARTH	2081-01-08 23:41	> 1 d	0.1031658	0.0740593	0.0109382
EARTH	2085-02-02 03:21	> 1 d	0.1658331	0.1342163	0.0106081
EARTH	2089-03-01 05:30	> 1 w	0.1987896	0.1864678	0.0041483
EARTH	2097-04-11 13:27	> 1 w	0.1926441	0.1722321	0.0070554
EARTH	2101-05-06 01:19	> 1 w	0.1548529	0.1084787	0.0159181
EARTH	2105-05-27 05:15	> 1 d	0.0930051	0.0257844	0.0230245
EARTH	2109-06-04 22:46	> 1 d	0.0302005	0.0059142	0.0197266
EARTH	2113-06-06 16:38	> 1 d	0.0122664	0.0057213	0.0137305
EARTH	2117-05-26 08:29	> 1 d	0.0983175	0.0137895	0.0356052
EARTH	2121-04-27 10:34	> 1 mo	0.1720561	0.0719623	0.0444461

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
59.47903382	152.66106885	0.00385843	MINIMUM
302.24880857	0.02184016	0.06090609	MINIMUM
0.03410154	74.70701572	0.20690895	SADDLE
180.62728541	256.78727875	0.62484521	SADDLE
2.87935646	258.69802617	1.81837611	SADDLE
181.88912726	77.69040824	2.60238617	MAXIMUM

Download:

MOID Plots

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