Asteroids

2018NE1 help

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

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.831

Aphelion (Q)

3.049

Eccentricity (e)

0.572

Inclination (i)

3.1

deg

Orbit period (P)

987.0

Earth MOID

0.01011

U parameter

6.8

Next Earth close approach

Date

2026-11-19

Nominal distance (from Earth center)

0.04265

6380746

Maximum Brightness

19.6

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

23.4

mag

Diameter

50 - 120*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2018-07-08

Observatory

ATLAS-HKO, 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

1.940016

1-sigma variation

0.000397

Unit

Eccentricity (e)

Value

0.571679

1-sigma variation

0.000098

Unit

Inclination (i)

Value

3.0576

1-sigma variation

0.0004

Unit

Long. of Ascending Node (Ω)

Value

289.8451

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

70.9455

1-sigma variation

0.0004

Unit

Mean Anomaly (M)

Value

314.62123

1-sigma variation

0.31772

Unit

Perihelion distance

Value

0.830949

1-sigma variation

Unit

Aphelion distance

Value

3.049083

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.083475

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.622797

1-sigma variation

Unit

MOID

Value

0.010112

1-sigma variation

Unit

Orbit Period

Value

986.9756

1-sigma variation

Unit

U parameter

Value

6.8

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.57720E-7	3.87556E-8	1.69879E-7	5.26367E-8	-1.46836E-7	-1.26180E-4
e	3.87556E-8	9.52323E-9	4.17431E-8	1.29333E-8	-3.60540E-8	-3.10053E-5
i	1.69879E-7	4.17431E-8	1.83324E-7	5.74825E-8	-1.58941E-7	-1.35907E-4
Ω	5.26367E-8	1.29333E-8	5.74825E-8	1.96730E-8	-5.13395E-8	-4.21105E-5
ω	-1.46836E-7	-3.60540E-8	-1.58941E-7	-5.13395E-8	1.47132E-7	1.17471E-4
M	-1.26180E-4	-3.10053E-5	-1.35907E-4	-4.21105E-5	1.17471E-4	1.00947E-1

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

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

23.442

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

50 - 120*

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

Radar R

Unit

Source

[3]

Download this part as:

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	Estimation	Estimated from absolute magnitude
[3]	EARN	1.) href="http://echo.jpl.nasa.gov/asteroids/index.html">JPL's NEO Radar Detection Program Webpage

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

Unit

Source

[1]

Unobserved

Value

3020

Unit

Source

[1]

Normalized RMS of residuals

Value

0.401285

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2018-07-08.38292

Unit

Source

[2]

Last Observation

Value

2018-07-23.041016

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

96 (2)

Unit

Source

[1]

Radar Summary

First Observation
Last Observation
Delay (Discarded)
Doppler (Discarded)
Total Optical Observations (Discarded)

Radar

Value

Unit

Source

First Observation

Value

2018-07-21

Unit

Source

[3]

Last Observation

Value

2018-07-21

Unit

Source

[3]

Delay (Discarded)

Value

0 (0)

Unit

Source

[-]

Doppler (Discarded)

Value

1 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

1 (0)

Unit

Source

[1]

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
[3]	JPL Radar Observations	Jet Propulsion Laboratory: https://ssd.jpl.nasa.gov/dat/radar_data_ast.txt

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 2018NE1 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	1953-08-02 23:03	> 1 w	0.0822041	0.0051658	0.0402379
EARTH	1961-12-02 00:15	> 1 d	0.1893463	0.0472709	0.0538101
MARS	1964-10-27 19:55	> 1 d	0.0478409	0.0419739	0.0200364
EARTH	1980-10-31 13:29	> 1 w	0.1200118	0.0432953	0.0377715
EARTH	1999-08-30 06:52	> 1 w	0.1600334	0.1229126	0.0123986
EARTH	2018-07-21 11:08	< 1 s	0.0258586	0.0258471	0.0000038
EARTH	2026-11-19 02:49	> 1 d	0.0426527	0.0421968	0.0021832
EARTH	2045-08-11 05:45	> 1 w	0.1140272	0.0049461	0.0967563
EARTH	2053-12-03 17:50	> 1 w	0.1961235	0.0401780	0.1807378
EARTH	2072-09-26 21:46	> 1 mo	0.1789564	0.1427590	0.0138856
EARTH	2091-07-13 23:10	> 1 w	0.1341813	0.0113113	0.1127621
EARTH	2099-11-01 16:01	> 1 w	0.1236018	0.0442068	0.0304140
EARTH	2118-07-22 09:19	> 1 w	0.0377919	0.0133779	0.1257852
EARTH	2126-11-05 04:47	> 1 w	0.1139225	0.0401039	0.0334307

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
326.28385397	196.37041119	0.01011163	MINIMUM
31.21624457	313.42638164	0.04220536	MINIMUM
358.83928739	255.25024672	0.17913706	SADDLE
358.46031866	74.50995627	1.82623696	SADDLE
179.60193778	75.84760114	2.05492093	SADDLE
179.54395902	255.81485770	4.05217638	MAXIMUM

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MOID Plots

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