Asteroids

2013EC20 help

Last update: 2024-04-23 14:44 UTC

Orbital Properties

Epoch

60400.0

MJD

Orbit type

Apollo

Perihelion (q)

0.978

Aphelion (Q)

1.248

Eccentricity (e)

0.121

Inclination (i)

1.3

deg

Orbit period (P)

429.0

Earth MOID

0.00145

U parameter

5.6

Next Earth close approach

Date

2040-02-28

Nominal distance (from Earth center)

0.03934

5885801

Maximum Brightness

24.5

mag

Risk

Object is in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

4 - 10*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2013-03-07

Observatory

Catalina Sky Survey

Orbit Visualiser

Click the button to start Orbit Visualiser

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

60400.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.113113

1-sigma variation

0.000022

Unit

Eccentricity (e)

Value

0.121018

1-sigma variation

0.000004

Unit

Inclination (i)

Value

1.3051

1-sigma variation

0.0003

Unit

Long. of Ascending Node (Ω)

Value

165.3468

1-sigma variation

0.0206

Unit

Arg. of Perihelion (ω)

Value

33.9271

1-sigma variation

0.0339

Unit

Mean Anomaly (M)

Value

132.08301

1-sigma variation

0.01898

Unit

Perihelion distance

Value

0.978406

1-sigma variation

Unit

Aphelion distance

Value

1.247819

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.004929

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.212154

1-sigma variation

Unit

MOID

Value

0.001446

1-sigma variation

Unit

Orbit Period

Value

428.9504

1-sigma variation

Unit

U parameter

Value

5.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.77474E-10	7.88768E-11	-7.49344E-9	-4.50199E-7	7.41197E-7	4.14697E-7
e	7.88768E-11	1.31094E-11	-1.23963E-9	-7.43639E-8	1.22512E-7	6.84192E-8
i	-7.49344E-9	-1.23963E-9	1.17689E-7	7.06526E-6	-1.16338E-5	-6.50629E-6
Ω	-4.50199E-7	-7.43639E-8	7.06526E-6	4.24483E-4	-6.98851E-4	-3.91016E-4
ω	7.41197E-7	1.22512E-7	-1.16338E-5	-6.98851E-4	1.15064E-3	6.43671E-4
M	4.14697E-7	6.84192E-8	-6.50629E-6	-3.91016E-4	6.43671E-4	3.60270E-4

Date of computation: 2024-04-23 10:08 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

28.98

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

4 - 10*

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 ODIM	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

4059

Unit

Source

[1]

Normalized RMS of residuals

Value

0.430756

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2013-03-07.21579

Unit

Source

[2]

Last Observation

Value

2013-03-08.83617

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

58 (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

2013-03-13

Unit

Source

[3]

Last Observation

Value

2013-03-13

Unit

Source

[3]

Delay (Discarded)

Value

0 (0)

Unit

Source

[1]

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 ODIM	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 2013EC20 from 1950 to 2124

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possibile distance in au	Distance uncert. in au
EARTH	1956-02-20 02:24	> 1 mo	0.0886808	0.0126529	15.7365204
EARTH	1956-06-25 12:26	> 1 mo	0.1570904	0.0917240	8.6310054
EARTH	1962-03-01 11:44	> 1 mo	0.0303634	0.0042427	1.9991766
EARTH	1993-04-20 23:51	> 1 mo	0.0567762	0.0316689	0.6711735
EARTH	1999-03-13 00:17	1240.1	0.0021422	0.0007551	0.0009991
EARTH	2013-03-09 02:40	< 1 min	0.0010032	0.0010030	0.0000001
EARTH	2020-01-01 04:19	> 1 d	0.1619490	0.1599284	0.0006735
EARTH	2020-06-09 19:38	165.9	0.0672213	0.0635855	0.0012165
EARTH	2040-02-28 18:00	435.8	0.0393442	0.0326960	0.0022161
EARTH	2040-07-28 04:54	> 1 d	0.1478135	0.1440547	0.0012540
EARTH	2047-03-17 07:37	> 1 w	0.0133179	0.0003704	0.0085943
EARTH	2060-02-15 22:47	> 1 w	0.1753906	0.0025336	0.6159010
EARTH	2066-12-11 05:04	> 1 mo	0.1998838	0.0134080	0.2659510
EARTH	2067-06-14 06:48	> 1 mo	0.1517720	0.0221276	0.7391294
EARTH	2080-05-07 19:52	> 1 mo	0.0249212	0.0221273	0.1118300
EARTH	2093-02-16 14:27	> 1 mo	0.1265524	0.0031083	0.9806541
EARTH	2093-08-12 19:35	> 1 mo	0.1894315	0.0512298	0.3793750
EARTH	2100-06-14 18:06	> 1 mo	0.1688139	0.0218111	0.6323807
EARTH	2113-03-24 08:50	> 1 mo	0.0209317	0.0018863	0.1377531

Download as:

2013EC20

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE/σ	IP	Exp. energy	PS
2090-07-14.020	84611.020	-1.337	0.48 ± 0.096	4.02E6	3.44E-7	1.13E-9	-8.75
2121-03-09.683	95806.683	-1.197	1.84 ± 0.000	1.06E8	1.41E-8	4.63E-11	-10.30
2121-05-29.720	95887.720	0.563	3.68 ± 0.310	1.06E8	1.80E-8	5.90E-11	-10.19


Based on 58 optical observations (of which 0 are rejected as outliers) and on 1 radar observations (of which 0 are rejected as outliers) from 2013/03/07.216 to 2013/03/08.836.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 4.25 and 4.25 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
AstOD software version= 4.0, Date of computation=20240110 090430.676 UTC.

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