Asteroids

2020KN2 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.976

Aphelion (Q)

2.585

Eccentricity (e)

0.452

Inclination (i)

0.5

deg

Orbit period (P)

867.8

Earth MOID

0.00122

U parameter

7.6

Next Earth close approach

Date

2039-06-22

Nominal distance (from Earth center)

0.03077

4603282

Maximum Brightness

28.9

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

26.2

mag

Diameter

15 - 30*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2020-05-20

Observatory

Pan-STARRS 2, Haleakala

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

1.780538

1-sigma variation

0.001109

Unit

Eccentricity (e)

Value

0.452050

1-sigma variation

0.000360

Unit

Inclination (i)

Value

0.4965

1-sigma variation

0.0003

Unit

Long. of Ascending Node (Ω)

Value

83.0966

1-sigma variation

0.0005

Unit

Arg. of Perihelion (ω)

Value

201.0247

1-sigma variation

0.0002

Unit

Mean Anomaly (M)

Value

97.74704

1-sigma variation

0.76925

Unit

Perihelion distance

Value

0.975646

1-sigma variation

Unit

Aphelion distance

Value

2.585431

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.461997

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.020204

1-sigma variation

Unit

MOID

Value

0.001219

1-sigma variation

Unit

Orbit Period

Value

867.8115

1-sigma variation

Unit

U parameter

Value

7.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.23087E-6	3.99778E-7	3.00284E-7	5.49055E-7	6.07965E-9	-8.53440E-4
e	3.99778E-7	1.29846E-7	9.75305E-8	1.78329E-7	1.97865E-9	-2.77192E-4
i	3.00284E-7	9.75305E-8	7.32810E-8	1.33151E-7	2.30913E-9	-2.08206E-4
Ω	5.49055E-7	1.78329E-7	1.33151E-7	2.75555E-7	-2.85017E-8	-3.80696E-4
ω	6.07965E-9	1.97865E-9	2.30913E-9	-2.85017E-8	3.31108E-8	-4.21598E-6
M	-8.53440E-4	-2.77192E-4	-2.08206E-4	-3.80696E-4	-4.21598E-6	5.91746E-1

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

26.227

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

15 - 30*

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

[-]

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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

1931

Unit

Source

[1]

Normalized RMS of residuals

Value

0.62209

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2020-05-13.356394

Unit

Source

[2]

Last Observation

Value

2020-06-03.38263

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

87 (2)

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 2020KN2 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	1958-08-17 09:27	> 1 mo	0.0680604	0.0073675	61.0229026
EARTH	1970-05-12 09:50	> 1 mo	0.1937977	0.0046410	48.4856407
MARS	1985-01-06 00:18	> 1 mo	0.0198446	0.0125345	7.6211637
EARTH	1989-07-31 09:01	> 1 mo	0.0152408	0.0067817	2.0732341
EARTH	2008-08-05 15:38	> 1 w	0.0078988	0.0066719	0.0274878
EARTH	2020-06-02 02:37	< 1 s	0.0148644	0.0148344	0.0000100
MARS	2020-10-01 14:26	76.8	0.0154486	0.0154303	0.0000064
EARTH	2039-06-22 02:36	> 1 mo	0.0307710	0.0023051	0.0398625
EARTH	2058-08-17 20:48	> 1 mo	0.0695927	0.0070543	0.2635133
EARTH	2089-07-29 04:10	> 1 mo	0.0175560	0.0067756	0.1684376
MARS	2108-03-02 23:53	> 1 mo	0.0342212	0.0291056	1.3988631
EARTH	2108-08-09 22:57	> 1 mo	0.0175812	0.0066277	2.6383579
EARTH	2120-05-23 19:28	> 1 mo	0.0947259	0.0005609	37.7330163

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
342.10000003	152.68840569	0.00111319	MINIMUM
17.74074940	210.86436369	0.00675738	MINIMUM
0.00803836	181.92097784	0.04096102	SADDLE
179.97910013	1.85087468	1.60183684	SADDLE
359.94259780	1.81160457	1.95910989	SADDLE
179.97576799	181.84846209	3.60177578	MAXIMUM

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MOID Plots

Click on the images to zoom-in and zoom-out

Level lines of the squared distance function

2020KN2

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS
2063-06-08.378	74713.378	1.577	1.59 ± 0.001	8.07E3	3.14E-5	2.27E-1	-5.09
2068-06-07.278	76539.278	1.569	0.54 ± 0.000	1.52E6	2.64E-7	2.27E-1	-7.21
2068-06-07.367	76539.367	-0.353	1.56 ± 0.001	2.65E6	2.12E-7	2.25E-1	-7.31
2071-07-25.671	77682.671	1.556	1.71 ± 0.089	2.63E7	2.75E-9	2.26E-1	-9.22
2083-06-08.204	82018.204	-0.432	1.54 ± 0.000	3.96E7	1.48E-8	2.25E-1	-8.59
2087-06-07.842	83478.842	1.642	0.61 ± 0.001	2.12E6	1.59E-7	2.26E-1	-7.58
2091-06-08.379	84940.379	1.247	0.68 ± 0.000	1.87E7	3.18E-8	2.26E-1	-8.32
2098-06-09.312	87498.312	-0.563	1.28 ± 0.002	2.97E6	3.06E-7	2.24E-1	-7.38
2110-06-10.311	91881.311	0.822	1.15 ± 0.000	4.64E6	2.11E-7	2.25E-1	-7.61
2111-06-09.821	92245.821	0.837	1.15 ± 0.001	2.83E6	3.20E-7	2.26E-1	-7.43
2112-06-08.343	92610.343	-0.437	0.78 ± 0.000	2.46E7	5.12E-8	2.27E-1	-8.23
2117-06-09.444	94437.444	-3.915	0.83 ± 0.001	2.45E5	2.37E-9	2.21E-1	-9.59
2117-06-10.258	94438.258	-0.526	0.64 ± 0.000	1.16E8	9.80E-9	2.23E-1	-8.97
2120-06-08.893	95532.893	-0.139	0.93 ± 0.000	2.39E6	5.30E-7	2.26E-1	-7.25
2122-06-10.865	96264.865	-0.586	0.54 ± 0.000	5.22E7	2.16E-8	2.23E-1	-8.65
2122-06-10.868	96264.868	-4.826	1.58 ± 0.001	5.52E5	1.00E-11	2.21E-1	-11.99


Based on 87 optical observations (of which 2 are rejected as outliers) from 2020/05/13.356 to 2020/06/03.383.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.76 and 1.76 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 4.0, Date of computation=20250805 130500.123 UTC.

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