Asteroids

2018GE3 help

Last update: 2026-07-30 14:25 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.316

Aphelion (Q)

3.339

Eccentricity (e)

0.827

Inclination (i)

9.0

deg

Orbit period (P)

902.5

Earth MOID

0.00051

U parameter

8.0

Next Earth close approach

Date

2060-04-14

Nominal distance (from Earth center)

0.01064

1591079

Maximum Brightness

16.8

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

23.9

mag

Diameter

40 - 100*

Taxonomic type

Rotation period (T)

0.3040

Discovery Information

Discovery Date

2018-04-14

Observatory

University of Arizona Catalina Sky 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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.827616

1-sigma variation

0.001553

Unit

Eccentricity (e)

Value

0.827126

1-sigma variation

0.000198

Unit

Inclination (i)

Value

9.0368

1-sigma variation

0.0035

Unit

Long. of Ascending Node (Ω)

Value

25.2471

1-sigma variation

0.0019

Unit

Arg. of Perihelion (ω)

Value

300.6674

1-sigma variation

0.0014

Unit

Mean Anomaly (M)

Value

90.74456

1-sigma variation

1.52211

Unit

Perihelion distance

Value

0.315947

1-sigma variation

Unit

Aphelion distance

Value

3.339285

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.590854

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.004056

1-sigma variation

Unit

MOID

Value

0.000508

1-sigma variation

Unit

Orbit Period

Value

902.4559

1-sigma variation

Unit

U parameter

Value

8.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.41051E-6	3.08048E-7	5.42606E-6	2.95267E-6	-2.18670E-6	-2.36320E-3
e	3.08048E-7	3.93678E-8	6.93520E-7	3.77320E-7	-2.79229E-7	-3.02003E-4
i	5.42606E-6	6.93520E-7	1.22385E-5	6.64341E-6	-4.89968E-6	-5.31957E-3
Ω	2.95267E-6	3.77320E-7	6.64341E-6	3.61722E-6	-2.68169E-6	-2.89472E-3
ω	-2.18670E-6	-2.79229E-7	-4.89968E-6	-2.68169E-6	2.02974E-6	2.14379E-3
M	-2.36320E-3	-3.02003E-4	-5.31957E-3	-2.89472E-3	2.14379E-3	2.31682E0

Date of computation: 2026-07-30 14:25 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

0.3040

Unit

Source

[1]

Quality

Value

Unit

Source

[1]

Amplitude

Value

0.93

Unit

mag

Source

[1]

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

23.861

Unit

mag

Source

[2]

Slope Parameter (G)

Value

0.15**

Unit

Source

[2]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[3]

Diameter

Value

40 - 100*

Unit

Source

[3]

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]	EARN	1.) Gornea, A. I. et al. (2018) MPB 45, 315-316. (Photometric Observations of Near-Earth Asteroid 2018 GE3)
[2]	ESA Aegis	ESA orbit determination and impact monitoring system
[3]	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

3030

Unit

Source

[1]

Normalized RMS of residuals

Value

0.377623

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2018-04-11.3904

Unit

Source

[2]

Last Observation

Value

2018-04-15.050954

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

130 (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

Filters

Initial Date: *

Final Date: *

Normalised Only accepted

Max residual (arcsec):

* - these fields are required

Plot

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 2018GE3 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
MERCURY	1975-09-03 01:01	> 1 w	0.0340544	0.0260538	0.2053428
MERCURY	1993-04-02 04:40	> 1 w	0.0446586	0.0276644	0.1852935
EARTH	2000-12-09 08:59	> 1 d	0.1852401	0.1273826	0.0996988
EARTH	2005-12-16 07:56	> 1 d	0.1272116	0.1268614	0.0071343
MERCURY	2010-11-01 15:09	> 1 d	0.0360735	0.0280931	0.0491265
EARTH	2013-04-09 04:01	> 1 d	0.1341934	0.0171585	0.0390497
EARTH	2018-04-15 06:40	< 1 s	0.0012895	0.0012882	0.0000004
EARTH	2060-04-14 23:14	> 1 w	0.0106357	0.0046074	0.2714814
EARTH	2062-12-23 12:45	> 1 w	0.1897398	0.1374339	0.3895931
EARTH	2092-04-16 05:12	> 1 mo	0.0224012	0.0079667	13.8619384
EARTH	2094-12-23 16:50	> 1 mo	0.1885998	0.1395531	3.9875818
MARS	2104-06-19 22:52	> 1 mo	0.0415453	0.0415247	0.5679667
EARTH	2124-04-10 19:30	> 1 mo	0.1382046	0.0125013	60.4887471
EARTH	2126-12-17 07:54	> 1 mo	0.1491153	0.1447804	14.8045422

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
303.06237049	99.70097957	0.00050751	MINIMUM
55.28098568	340.66848872	0.13398970	MINIMUM
358.15083733	217.65868859	0.70145934	SADDLE
358.43233125	38.56891169	1.30101558	SADDLE
179.69636036	41.53818875	2.36445456	SADDLE
179.96839236	221.61729127	4.34471331	MAXIMUM

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MOID Plots

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