Asteroids

2020NK1 help

Last update: 2025-07-29 02:36 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.492

Aphelion (Q)

2.295

Eccentricity (e)

0.647

Inclination (i)

45.4

deg

Orbit period (P)

600.5

Earth MOID

0.00248

U parameter

0.8

Next Earth close approach

Date

2043-08-04

Nominal distance (from Earth center)

0.02322

3473746

Maximum Brightness

13.2

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

18.9

mag

Diameter

400 - 1000*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2020-07-13

Observatory

ATLAS-MLO, Mauna Loa

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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.393032

1-sigma variation

2.261E-8

Unit

Eccentricity (e)

Value

0.647167

1-sigma variation

1.224E-7

Unit

Inclination (i)

Value

45.4469

1-sigma variation

1.747E-5

Unit

Long. of Ascending Node (Ω)

Value

311.0717

1-sigma variation

7.383E-7

Unit

Arg. of Perihelion (ω)

Value

107.9031

1-sigma variation

1.574E-5

Unit

Mean Anomaly (M)

Value

291.25978

1-sigma variation

0.00002

Unit

Perihelion distance

Value

0.491508

1-sigma variation

Unit

Aphelion distance

Value

2.294557

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.003632

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.310313

1-sigma variation

Unit

MOID

Value

0.002483

1-sigma variation

Unit

Orbit Period

Value

600.5376

1-sigma variation

Unit

U parameter

Value

0.8

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	5.11420E-16	1.00806E-15	1.35816E-14	2.13371E-15	1.03909E-13	-5.28716E-13
e	1.00806E-15	1.49704E-14	7.87075E-13	1.79990E-14	1.91428E-12	-7.30773E-13
i	1.35816E-14	7.87075E-13	3.05318E-10	-5.78505E-12	1.14018E-10	3.85493E-12
Ω	2.13371E-15	1.79990E-14	-5.78505E-12	5.45059E-13	1.58184E-12	-1.86341E-12
ω	1.03909E-13	1.91428E-12	1.14018E-10	1.58184E-12	2.47716E-10	-6.67679E-11
M	-5.28716E-13	-7.30773E-13	3.85493E-12	-1.86341E-12	-6.67679E-11	5.54254E-10

Date of computation: 2025-07-29 02:36 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

18.947

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

400 - 1000*

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

4928

Unit

Source

[1]

Unobserved

Value

552

Unit

Source

[1]

Normalized RMS of residuals

Value

0.477963

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2010-08-24.346779

Unit

Source

[2]

Last Observation

Value

2024-02-20.03059

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

139 (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

2020-07-31

Unit

Source

[3]

Last Observation

Value

2020-07-31

Unit

Source

[3]

Delay (Discarded)

Value

1 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

2 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

3 (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 2020NK1 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	1969-08-04 03:30	< 1 min	0.0194196	0.0194019	0.0000059
EARTH	1992-08-09 17:08	< 1 min	0.1697906	0.1697792	0.0000038
EARTH	2020-07-31 20:56	< 1 s	0.0550036	0.0550036	0.0000000
EARTH	2043-08-04 20:01	< 1 min	0.0232206	0.0232103	0.0000034
EARTH	2071-07-29 20:05	< 1 min	0.1207249	0.1206857	0.0000130
EARTH	2094-08-07 00:04	1.3	0.0838110	0.0837410	0.0000233
EARTH	2122-08-02 14:07	< 1 min	0.0518300	0.0517812	0.0000163

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
294.96444182	209.19374951	0.00248252	MINIMUM
46.77588061	38.02531569	0.26022022	MINIMUM
351.61646100	300.96631673	0.73305225	SADDLE
353.85563177	127.62481317	1.40428705	SADDLE
172.38216051	138.52392848	1.70413984	SADDLE
184.54214045	325.96224874	3.09557611	MAXIMUM

Download:

MOID Plots

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