Asteroids

2018QE help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.992

Aphelion (Q)

1.657

Eccentricity (e)

0.251

Inclination (i)

0.2

deg

Orbit period (P)

556.7

Earth MOID

0.00299

U parameter

0.8

Next Earth close approach

Date

2053-08-08

Nominal distance (from Earth center)

0.05905

8834285

Maximum Brightness

24.1

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

27.9

mag

Diameter

7 - 15*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2018-08-17

Observatory

ATLAS-MLO, Mauna Loa

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

1.324402

1-sigma variation

2.449E-8

Unit

Eccentricity (e)

Value

0.251335

1-sigma variation

5.597E-8

Unit

Inclination (i)

Value

0.1833

1-sigma variation

9.230E-7

Unit

Long. of Ascending Node (Ω)

Value

84.7346

1-sigma variation

0.0003

Unit

Arg. of Perihelion (ω)

Value

272.3801

1-sigma variation

0.0003

Unit

Mean Anomaly (M)

Value

274.32442

1-sigma variation

0.00003

Unit

Perihelion distance

Value

0.991533

1-sigma variation

Unit

Aphelion distance

Value

1.657271

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.238356

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.242014

1-sigma variation

Unit

MOID

Value

0.002989

1-sigma variation

Unit

Orbit Period

Value

556.7088

1-sigma variation

Unit

U parameter

Value

0.8

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	5.99858E-16	1.28567E-15	-1.49078E-14	-2.89771E-12	3.49902E-12	-6.27688E-13
e	1.28567E-15	3.13287E-15	-2.70009E-14	-3.68144E-12	5.19522E-12	-1.52214E-12
i	-1.49078E-14	-2.70009E-14	8.52005E-13	1.68921E-10	-1.80310E-10	1.32033E-11
Ω	-2.89771E-12	-3.68144E-12	1.68921E-10	7.60066E-8	-7.80030E-8	2.30462E-9
ω	3.49902E-12	5.19522E-12	-1.80310E-10	-7.80030E-8	8.07981E-8	-3.07838E-9
M	-6.27688E-13	-1.52214E-12	1.32033E-11	2.30462E-9	-3.07838E-9	7.64671E-10

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

27.925

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 - 15*

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

2291

Unit

Source

[1]

Unobserved

Value

341

Unit

Source

[1]

Normalized RMS of residuals

Value

0.806832

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2018-08-05.317385

Unit

Source

[2]

Last Observation

Value

2024-11-12.47629

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

65 (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 2018QE 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	1963-07-28 12:18	2.5	0.1591023	0.1590350	0.0000224
EARTH	1966-08-12 00:46	154.4	0.0346045	0.0331299	0.0004916
EARTH	1969-08-25 11:22	14.1	0.0034422	0.0034135	0.0000096
EARTH	1992-08-05 15:51	< 1 min	0.0581730	0.0581602	0.0000043
EARTH	1995-11-02 23:16	< 1 min	0.1866406	0.1866266	0.0000047
EARTH	2018-08-20 03:17	< 1 s	0.0071734	0.0071734	0.0000000
EARTH	2021-09-10 15:14	< 1 min	0.0150522	0.0150521	0.0000000
EARTH	2024-10-12 08:36	< 1 min	0.0111934	0.0111933	0.0000000
EARTH	2053-08-08 04:09	< 1 min	0.0590535	0.0590405	0.0000043
EARTH	2056-10-27 14:21	< 1 min	0.0865825	0.0865796	0.0000010
EARTH	2085-08-04 19:43	4.9	0.0871983	0.0871017	0.0000322
EARTH	2088-10-24 20:25	4.3	0.0609187	0.0608537	0.0000217
MARS	2106-06-26 08:26	45.8	0.0260110	0.0258284	0.0000611
EARTH	2117-08-26 01:21	130.3	0.0031291	0.0029179	0.0000785
EARTH	2120-08-06 18:56	> 1 d	0.0863570	0.0519042	0.0114968

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
12.58270848	272.05303268	0.00302629	MINIMUM
340.58476173	230.66991259	0.00303633	MINIMUM
356.53809404	251.31405545	0.01355174	SADDLE
177.93261850	72.75496421	0.66195604	SADDLE
356.57397613	71.35128493	1.98654468	SADDLE
177.91282861	252.73448520	2.66164753	MAXIMUM

Download:

MOID Plots

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