Asteroids

234145 2000EW70 help

Last update: 2025-11-24 16:53 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.636

Aphelion (Q)

1.239

Eccentricity (e)

0.321

Inclination (i)

5.4

deg

Orbit period (P)

331.6

Earth MOID

0.01006

U parameter

0.0

Next Earth close approach

Date

2027-11-20

Nominal distance (from Earth center)

0.09975

14921689

Maximum Brightness

19.7

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

21.6

mag

Diameter

390

Taxonomic type

Rotation period (T)

<33

Discovery Information

Discovery Date

2000-03-09

Observatory

Lincoln Laboratory ETS, New Mexico

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

0.937546

1-sigma variation

5.281E-10

Unit

Eccentricity (e)

Value

0.321325

1-sigma variation

4.116E-8

Unit

Inclination (i)

Value

5.4281

1-sigma variation

3.322E-6

Unit

Long. of Ascending Node (Ω)

Value

178.0280

1-sigma variation

4.602E-6

Unit

Arg. of Perihelion (ω)

Value

125.7799

1-sigma variation

4.806E-6

Unit

Mean Anomaly (M)

Value

8.78970

1-sigma variation

4.577E-6

Unit

Perihelion distance

Value

0.636289

1-sigma variation

Unit

Aphelion distance

Value

1.238804

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.038619

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.296760

1-sigma variation

Unit

MOID

Value

0.010063

1-sigma variation

Unit

Orbit Period

Value

331.5793

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.78844E-19	-1.98906E-17	1.43949E-16	3.24046E-16	-4.28639E-16	4.79324E-16
e	-1.98906E-17	1.69382E-15	-4.24077E-15	-5.09958E-14	6.36159E-14	-1.06539E-13
i	1.43949E-16	-4.24077E-15	1.10383E-11	8.42267E-12	-8.20999E-12	-2.77874E-12
Ω	3.24046E-16	-5.09958E-14	8.42267E-12	2.11768E-11	-2.20208E-11	3.64667E-12
ω	-4.28639E-16	6.36159E-14	-8.20999E-12	-2.20208E-11	2.30972E-11	-5.08839E-12
M	4.79324E-16	-1.06539E-13	-2.77874E-12	3.64667E-12	-5.08839E-12	2.09445E-11

Date of computation: 2025-11-24 16:53 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

<33

Unit

Source

[2]

[3]

Quality

Value

Unit

Source

[3]

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

[1]

Taxonomy (all)

Value

Unit

Source

[1]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

21.647

Unit

mag

Source

[4]

Slope Parameter (G)

Value

0.15**

Unit

Source

[4]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.045

0.034

Unit

Source

[6]

[5]

Diameter

Value

390

Unit

Source

[5]

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

[7]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Whiteley, R.J. (2001) PhD. Thesis, University of Hawaii. (A Compositional and Dynamical Survey of the Near-Earth Asteroids)
[2]	EARN	1.) href="http://echo.jpl.nasa.gov/~lance/radar.nea.periods.html"> L.Benner, JPL Radar website
[3]	EARN	1.) Benner, L.A.M. (2011) http://echo.jpl.nasa.gov/~lance/radar.nea.per iods.html
[4]	ESA Aegis	ESA orbit determination and impact monitoring system
[5]	EARN	1.) Joseph R. Masiero et al 2021 Planet. Sci. J. 2 162
[6]	EARN	1.) Mainzer, A. et al. (2014) Astrophys. J. 784, 110. (The Population of Tiny Near-Earth Objects Observed by NEOWISE) 2.) Binzel, R.P. et al. (2002) in "Asteroids III" (Eds. W.F.Bottke et al.), Univ.Ariz.Press, Tucson, USA, pp. 255-271. (Physical Properties of NEOs) 3.) Mainzer, A.; Bauer, J.; Grav, T.; Masiero, J.; et al. (2014) Astrophys. J. 784, A110.
[7]	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

6939

Unit

Source

[1]

Unobserved

Value

2500

Unit

Source

[1]

Normalized RMS of residuals

Value

0.578239

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2000-03-09.42849

Unit

Source

[2]

Last Observation

Value

2019-03-09.55413

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

406 (4)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2000-03-19

Unit

Source

[3]

Last Observation

Value

2000-03-23

Unit

Source

[3]

Delay (Discarded)

Value

4 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

6 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

10 (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 234145 2000EW70 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	1951-03-23 02:21	3.3	0.0932941	0.0932013	0.0000310
EARTH	1958-11-26 23:28	< 1 min	0.1850482	0.1850240	0.0000081
VENUS	1959-09-17 00:58	1.2	0.0472841	0.0472659	0.0000061
EARTH	1961-03-24 14:10	< 1 min	0.0096293	0.0096276	0.0000006
EARTH	1968-11-25 01:14	< 1 min	0.1584885	0.1584860	0.0000008
EARTH	1971-03-24 23:02	< 1 s	0.0118416	0.0118406	0.0000003
EARTH	1978-11-21 05:14	< 1 s	0.0836162	0.0836160	0.0000001
EARTH	1981-03-19 09:17	< 1 s	0.1872151	0.1872143	0.0000003
EARTH	1990-03-08 17:23	< 1 min	0.1727914	0.1727910	0.0000001
EARTH	2000-03-24 10:09	< 1 s	0.0133193	0.0133193	0.0000000
EARTH	2007-11-24 12:35	< 1 s	0.1225013	0.1225011	0.0000001
EARTH	2010-03-23 20:00	< 1 s	0.0593190	0.0593186	0.0000001
VENUS	2013-03-29 11:02	< 1 s	0.0329848	0.0329847	0.0000000
EARTH	2017-11-21 23:05	< 1 s	0.0860470	0.0860468	0.0000000
EARTH	2020-03-21 13:19	< 1 s	0.1251777	0.1251773	0.0000001
EARTH	2027-11-20 20:12	< 1 s	0.0997453	0.0997452	0.0000001
VENUS	2032-04-22 15:09	< 1 s	0.0325640	0.0325639	0.0000000
EARTH	2037-11-28 19:17	< 1 min	0.1652678	0.1652673	0.0000002
EARTH	2049-03-17 10:33	< 1 min	0.1344568	0.1344558	0.0000003
EARTH	2059-03-25 04:36	< 1 s	0.0533383	0.0533370	0.0000004
EARTH	2066-11-26 19:39	< 1 s	0.1723565	0.1723556	0.0000003
EARTH	2069-03-25 00:59	< 1 s	0.0131122	0.0131120	0.0000001
EARTH	2079-03-24 10:46	< 1 min	0.0773331	0.0773311	0.0000007
EARTH	2089-03-13 07:57	< 1 min	0.1552125	0.1552107	0.0000006
EARTH	2097-11-26 02:32	< 1 min	0.1589251	0.1589241	0.0000003
EARTH	2107-11-21 15:52	< 1 min	0.0870729	0.0870723	0.0000002
EARTH	2110-03-22 16:28	< 1 min	0.1407767	0.1407740	0.0000009
EARTH	2117-11-24 06:49	< 1 min	0.1103750	0.1103724	0.0000009
EARTH	2120-03-25 03:29	< 1 min	0.0382237	0.0382199	0.0000013

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
257.85764058	81.62869634	0.01006341	MINIMUM
96.94926409	318.26799947	0.08235107	MINIMUM
176.56341708	19.88572506	0.26829069	SADDLE
356.68530158	198.49399818	0.38603153	SADDLE
358.00225024	20.36536331	1.61983512	SADDLE
179.42684208	201.90580258	2.25400492	MAXIMUM

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MOID Plots

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