Asteroids

2020KA help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.873

Aphelion (Q)

1.230

Eccentricity (e)

0.170

Inclination (i)

3.9

deg

Orbit period (P)

393.9

Earth MOID

0.00628

U parameter

6.0

Next Earth close approach

Date

2034-06-27

Nominal distance (from Earth center)

0.11914

17822687

Maximum Brightness

29.2

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

27.4

mag

Diameter

9 - 20*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2020-05-16

Observatory

Catalina Sky Survey

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

1.051626

1-sigma variation

0.000029

Unit

Eccentricity (e)

Value

0.170005

1-sigma variation

0.000058

Unit

Inclination (i)

Value

3.9361

1-sigma variation

0.0014

Unit

Long. of Ascending Node (Ω)

Value

61.9355

1-sigma variation

0.0013

Unit

Arg. of Perihelion (ω)

Value

261.6533

1-sigma variation

0.0012

Unit

Mean Anomaly (M)

Value

331.92921

1-sigma variation

0.06917

Unit

Perihelion distance

Value

0.872844

1-sigma variation

Unit

Aphelion distance

Value

1.230407

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.059573

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.017342

1-sigma variation

Unit

MOID

Value

0.006283

1-sigma variation

Unit

Orbit Period

Value

393.9039

1-sigma variation

Unit

U parameter

Value

6.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	8.33847E-10	1.67075E-9	3.81993E-8	-2.52031E-8	-3.06414E-8	-1.99750E-6
e	1.67075E-9	3.39967E-9	7.45498E-8	-4.38434E-8	-5.89339E-8	-4.00362E-6
i	3.81993E-8	7.45498E-8	1.87228E-6	-1.49910E-6	-1.40824E-6	-9.14524E-5
Ω	-2.52031E-8	-4.38434E-8	-1.49910E-6	1.79072E-6	1.06496E-6	6.01978E-5
ω	-3.06414E-8	-5.89339E-8	-1.40824E-6	1.06496E-6	1.41681E-6	7.33536E-5
M	-1.99750E-6	-4.00362E-6	-9.14524E-5	6.01978E-5	7.33536E-5	4.78511E-3

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

27.386

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

9 - 20*

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]	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

1993

Unit

Source

[1]

Normalized RMS of residuals

Value

0.616986

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2020-05-16.35075

Unit

Source

[2]

Last Observation

Value

2020-05-17.35649

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

37 (1)

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

[-]

Last Observation

Value

Unit

Source

[-]

Delay (Discarded)

Value

0 (0)

Unit

Source

[-]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[-]

Total Radar Observations (Discarded)

Value

0 (0)

Unit

Source

[-]

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

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 2020KA 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	1950-05-12 16:20	177.7	0.0979674	0.0893090	0.0028871
EARTH	1951-09-11 15:50	> 1 d	0.1424780	0.1402047	0.0007577
EARTH	1951-12-13 00:17	> 1 d	0.1661829	0.1613626	0.0016104
EARTH	1965-03-29 23:43	> 1 d	0.1997943	0.1963846	0.0011369
EARTH	1965-07-30 11:51	> 1 d	0.1513230	0.1500547	0.0004237
EARTH	1966-11-15 24:00	119.1	0.1544233	0.1479068	0.0021728
EARTH	1979-06-06 04:40	264.7	0.0891510	0.0879048	0.0004155
EARTH	1980-11-09 07:44	20.4	0.0245288	0.0244313	0.0000325
EARTH	1993-08-01 02:21	> 1 d	0.1499430	0.1492731	0.0002241
EARTH	1994-11-17 08:00	102.3	0.1881600	0.1805408	0.0025402
EARTH	2006-05-14 08:35	257.4	0.0892751	0.0781444	0.0037114
EARTH	2007-09-23 23:40	> 1 d	0.1295605	0.1244773	0.0016945
EARTH	2007-12-02 18:53	> 1 d	0.1442312	0.1358607	0.0028005
EARTH	2020-05-19 01:02	< 1 min	0.0051161	0.0051118	0.0000014
EARTH	2021-11-06 16:01	10.0	0.0382984	0.0378818	0.0001392
EARTH	2034-06-27 09:21	> 1 d	0.1191373	0.1132294	0.0019778
EARTH	2035-11-12 14:06	201.9	0.0971330	0.0865879	0.0035244
EARTH	2047-05-11 16:23	104.1	0.1359768	0.1296859	0.0020971
EARTH	2048-09-09 12:38	> 1 d	0.1423390	0.1410801	0.0004197
EARTH	2048-12-10 09:12	1368.7	0.1652661	0.1623323	0.0009795
EARTH	2061-05-21 03:08	250.9	0.0289260	0.0243707	0.0015253
EARTH	2062-11-07 18:22	116.3	0.0239666	0.0231651	0.0003029
EARTH	2074-06-05 21:25	1157.6	0.0861970	0.0806897	0.0018373
EARTH	2075-11-11 17:02	65.1	0.1050244	0.0986831	0.0021161
EARTH	2087-08-19 20:25	> 1 d	0.1503652	0.1502833	0.0000275
EARTH	2087-12-23 10:08	> 1 d	0.1974932	0.1954032	0.0006979
EARTH	2099-05-16 17:50	29.8	0.0543327	0.0526163	0.0005723
EARTH	2100-11-05 06:19	15.9	0.0574138	0.0569937	0.0001403
EARTH	2112-05-14 21:43	231.9	0.0856753	0.0783412	0.0024449
EARTH	2113-10-17 23:19	> 1 d	0.1042384	0.0976401	0.0021995

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
283.65482110	134.65913868	0.00562580	MINIMUM
72.44263574	304.19363271	0.02034238	MINIMUM
357.96640668	219.61446249	0.15333633	SADDLE
178.33352167	39.45515185	0.25416905	SADDLE
356.41319419	37.72190543	1.85914233	SADDLE
177.08814808	218.40244192	2.24156339	MAXIMUM

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MOID Plots

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