Asteroids

468727 2010JE87 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.509

Aphelion (Q)

1.299

Eccentricity (e)

0.437

Inclination (i)

16.9

deg

Orbit period (P)

314.0

Earth MOID

0.03554

U parameter

1.3

A₂

-111.8

10^-15au/days²

Next Earth close approach

Date

2027-01-29

Nominal distance (from Earth center)

0.09774

14620985

Maximum Brightness

19.8

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

20.8

mag

Diameter

300

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2010-05-10

Observatory

WISE

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

0.904172

1-sigma variation

1.722E-8

Unit

Eccentricity (e)

Value

0.437027

1-sigma variation

8.893E-8

Unit

Inclination (i)

Value

16.9091

1-sigma variation

1.289E-5

Unit

Long. of Ascending Node (Ω)

Value

120.4709

1-sigma variation

2.894E-5

Unit

Arg. of Perihelion (ω)

Value

242.3092

1-sigma variation

2.231E-5

Unit

Mean Anomaly (M)

Value

292.88783

1-sigma variation

0.00005

Unit

Perihelion distance

Value

0.509024

1-sigma variation

Unit

Aphelion distance

Value

1.299320

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.066642

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.409138

1-sigma variation

Unit

MOID

Value

0.035543

1-sigma variation

Unit

Orbit Period

Value

314.0329

1-sigma variation

Unit

U parameter

Value

1.3

1-sigma variation

Unit

A₂

Value

-111.82037

1-sigma variation

32.37400

Unit

10^-15au/days²

Covariance Matrix

	a	e	i	Ω	ω	M	A₂
a	2.96659E-16	3.92724E-16	-1.63385E-14	-1.52986E-13	1.17984E-13	-7.69251E-13	5.43334E-7
e	3.92724E-16	7.90873E-15	4.67503E-13	1.52626E-13	-2.88858E-13	-2.00056E-12	2.60338E-7
i	-1.63385E-14	4.67503E-13	1.66148E-10	2.31478E-10	-1.99766E-10	-6.29746E-11	-4.32452E-5
Ω	-1.52986E-13	1.52626E-13	2.31478E-10	8.37601E-10	-6.29233E-10	8.42160E-11	-2.59819E-4
ω	1.17984E-13	-2.88858E-13	-1.99766E-10	-6.29233E-10	4.97697E-10	-8.00470E-11	2.09687E-4
M	-7.69251E-13	-2.00056E-12	-6.29746E-11	8.42160E-11	-8.00470E-11	2.27293E-9	-1.34730E-3
A₂	5.43334E-7	2.60338E-7	-4.32452E-5	-2.59819E-4	2.09687E-4	-1.34730E-3	1.04808E3

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

20.759

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.108

Unit

Source

[2]

[3]

Diameter

Value

300

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]	EARN	1.) Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; et al. (2011) Astrophys. J. 741, A90. See also Grav 2012b and Masiero 2012.
[3]	EARN	1.) Mainzer, A. et al. (2011) ApJ 743, 156. (NEOWISE Observations of Near-Earth Objects: Preliminary Results) (albedo and diameters of 428 NEOs)

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

4392

Unit

Source

[1]

Unobserved

Value

1246

Unit

Source

[1]

Normalized RMS of residuals

Value

0.555531

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2010-05-10.39774

Unit

Source

[2]

Last Observation

Value

2022-05-19.199452

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

194 (6)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2021-01-25

Unit

Source

[3]

Last Observation

Value

2021-01-27

Unit

Source

[3]

Delay (Discarded)

Value

0 (0)

Unit

Source

[-]

Doppler (Discarded)

Value

2 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

2 (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

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 468727 2010JE87 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	1953-01-24 23:00	1.3	0.0531209	0.0530141	0.0000356
EARTH	1959-01-30 06:05	1.9	0.1219111	0.1218076	0.0000345
EARTH	1984-01-25 15:32	< 1 min	0.0622373	0.0622125	0.0000083
EARTH	1990-01-29 11:28	< 1 min	0.1037425	0.1037238	0.0000062
EARTH	2015-01-25 06:23	< 1 min	0.1489774	0.1489765	0.0000003
EARTH	2021-01-25 18:16	< 1 min	0.0404167	0.0404164	0.0000001
EARTH	2027-01-29 16:42	< 1 min	0.0977353	0.0977328	0.0000008
EARTH	2058-01-25 14:27	< 1 min	0.1661466	0.1661109	0.0000119
EARTH	2064-01-26 01:50	< 1 min	0.0584255	0.0583884	0.0000124
EARTH	2070-01-28 17:19	< 1 min	0.0750856	0.0750377	0.0000160
EARTH	2101-01-25 18:20	< 1 min	0.1034127	0.1032831	0.0000432
EARTH	2107-01-28 14:35	2.3	0.0409201	0.0408499	0.0000235
EARTH	2113-02-01 09:10	4.3	0.1457343	0.1454936	0.0000802

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
99.00319306	23.65115644	0.03553626	MINIMUM
270.38320479	145.59571460	0.25063936	MINIMUM
189.58397300	84.92796376	0.42821141	SADDLE
3.55436357	267.23947424	0.52819772	SADDLE
359.12029610	79.92314455	1.49469642	SADDLE
176.55814669	256.56328299	2.28376067	MAXIMUM

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MOID Plots

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