Asteroids

2023EK2 help

Last update: 2024-04-25 01:36 UTC

Orbital Properties

Epoch

60400.0

MJD

Orbit type

Apollo

Perihelion (q)

0.614

Aphelion (Q)

1.922

Eccentricity (e)

0.516

Inclination (i)

3.2

deg

Orbit period (P)

521.6

Earth MOID

0.00372

U parameter

7.1

Next Earth close approach

Date

2033-03-29

Nominal distance (from Earth center)

0.03142

4700968

Maximum Brightness

18.6

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

23.1

mag

Diameter

60 - 140*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2023-03-15

Observatory

Purple Mountain Observatory, XuYi Station

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

1.268067

1-sigma variation

0.000257

Unit

Eccentricity (e)

Value

0.515814

1-sigma variation

0.000170

Unit

Inclination (i)

Value

3.2057

1-sigma variation

0.0012

Unit

Long. of Ascending Node (Ω)

Value

3.4219

1-sigma variation

0.0005

Unit

Arg. of Perihelion (ω)

Value

281.3377

1-sigma variation

0.0012

Unit

Mean Anomaly (M)

Value

214.28107

1-sigma variation

0.05956

Unit

Perihelion distance

Value

0.613980

1-sigma variation

Unit

Aphelion distance

Value

1.922154

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.156950

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.038922

1-sigma variation

Unit

MOID

Value

0.003718

1-sigma variation

Unit

Orbit Period

Value

521.5689

1-sigma variation

Unit

U parameter

Value

7.1

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.62294E-8	4.38009E-8	3.02456E-7	-1.35522E-7	3.01504E-7	-1.53288E-5
e	4.38009E-8	2.89683E-8	2.00037E-7	-8.96331E-8	1.99482E-7	-1.01377E-5
i	3.02456E-7	2.00037E-7	1.38151E-6	-6.19056E-7	1.37800E-6	-7.00035E-5
Ω	-1.35522E-7	-8.96331E-8	-6.19056E-7	2.77614E-7	-6.17957E-7	3.13666E-5
ω	3.01504E-7	1.99482E-7	1.37800E-6	-6.17957E-7	1.38419E-6	-6.97826E-5
M	-1.53288E-5	-1.01377E-5	-7.00035E-5	3.13666E-5	-6.97826E-5	3.54785E-3

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

23.101

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

60 - 140*

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 ODIM	ESA orbit determination and impact monitoring system
[2]	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

393

Unit

Source

[1]

Normalized RMS of residuals

Value

0.511188

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2023-02-28.32585

Unit

Source

[2]

Last Observation

Value

2023-03-28.821649

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

196 (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

Unit

Source

[3]

Last Observation

Value

Unit

Source

[3]

Delay (Discarded)

Value

0 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

0 (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 2023EK2 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	1956-03-24 09:21	> 1 w	0.0591593	0.0024293	0.2346342
EARTH	1960-10-21 02:51	> 1 w	0.1313822	0.0179037	0.1697153
MARS	1963-02-07 07:09	1125.3	0.0168760	0.0160674	0.0266614
EARTH	1966-03-19 04:11	> 1 d	0.1841025	0.0020116	0.0935897
EARTH	1970-10-15 16:05	> 1 d	0.0181146	0.0173894	0.0061630
EARTH	1980-10-09 16:31	164.1	0.1009917	0.0936617	0.0024459
EARTH	2013-04-04 06:48	> 1 d	0.1344403	0.0786566	0.0185970
EARTH	2023-03-30 03:51	< 1 s	0.0330732	0.0330399	0.0000111
EARTH	2033-03-29 14:59	1195.5	0.0314240	0.0038083	0.0164026
EARTH	2043-04-03 00:39	1051.9	0.1025237	0.0641397	0.0127985
MARS	2045-11-10 10:11	115.8	0.0149439	0.0135135	0.0058787
EARTH	2053-04-06 18:13	> 1 d	0.1626434	0.0245181	0.0460784
VENUS	2082-02-03 08:21	> 1 w	0.0284055	0.0279622	0.0139228
EARTH	2090-10-06 21:09	> 1 w	0.1522315	0.0198399	0.2190047
EARTH	2100-10-13 15:39	> 1 w	0.0556335	0.0184804	0.3302477
EARTH	2110-10-16 10:05	> 1 w	0.0223882	0.0186733	0.2090060
EARTH	2120-10-14 02:19	> 1 mo	0.0527578	0.0188971	1.0893838

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