Asteroids

2020PW help

Last update: 2025-04-09 07:59 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.817

Aphelion (Q)

2.870

Eccentricity (e)

0.557

Inclination (i)

3.7

deg

Orbit period (P)

914.4

Earth MOID

0.01012

U parameter

7.6

Next Earth close approach

Date

2025-08-17

Nominal distance (from Earth center)

0.0327

4891316

Maximum Brightness

22.1

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

25.7

mag

Diameter

19 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2020-08-11

Observatory

Mt. Lemmon 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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.843740

1-sigma variation

0.001340

Unit

Eccentricity (e)

Value

0.556644

1-sigma variation

0.000362

Unit

Inclination (i)

Value

3.7330

1-sigma variation

0.0021

Unit

Long. of Ascending Node (Ω)

Value

312.4455

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

71.5409

1-sigma variation

0.0011

Unit

Mean Anomaly (M)

Value

302.16093

1-sigma variation

0.71742

Unit

Perihelion distance

Value

0.817433

1-sigma variation

Unit

Aphelion distance

Value

2.870047

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.067268

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.559945

1-sigma variation

Unit

MOID

Value

0.010122

1-sigma variation

Unit

Orbit Period

Value

914.4245

1-sigma variation

Unit

U parameter

Value

7.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.79481E-6	4.84577E-7	2.79671E-6	1.80292E-7	-1.47496E-6	-9.61137E-4
e	4.84577E-7	1.30830E-7	7.55075E-7	4.86713E-8	-3.98176E-7	-2.59495E-4
i	2.79671E-6	7.55075E-7	4.35847E-6	2.81956E-7	-2.29999E-6	-1.49766E-3
Ω	1.80292E-7	4.86713E-8	2.81956E-7	2.00655E-8	-1.51590E-7	-9.65476E-5
ω	-1.47496E-6	-3.98176E-7	-2.29999E-6	-1.51590E-7	1.22771E-6	7.89849E-4
M	-9.61137E-4	-2.59495E-4	-1.49766E-3	-9.65476E-5	7.89849E-4	5.14697E-1

Date of computation: 2025-04-09 07:59 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

25.68

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

19 - 40*

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

1767

Unit

Source

[1]

Normalized RMS of residuals

Value

0.562242

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2020-08-08.479684

Unit

Source

[2]

Last Observation

Value

2020-08-12.999363

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

50 (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 2020PW 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	1952-12-04 02:22	> 1 mo	0.0915695	0.0512733	0.2337797
EARTH	1957-12-19 19:27	> 1 w	0.0863541	0.0513388	0.2988263
MARS	1975-03-16 22:22	> 1 w	0.0422554	0.0128379	0.2592357
EARTH	2015-08-01 12:07	> 1 d	0.1744126	0.0738886	0.0335464
EARTH	2020-08-12 19:08	< 1 s	0.0138765	0.0138522	0.0000081
EARTH	2025-08-17 08:26	> 1 d	0.0326964	0.0098528	0.0301548
EARTH	2030-09-02 07:43	> 1 d	0.1178729	0.0779734	0.0133013
EARTH	2035-09-24 22:26	220.4	0.1716329	0.1703922	0.0004137
EARTH	2040-10-16 01:14	> 1 d	0.1884896	0.1869354	0.0005323
EARTH	2045-11-09 15:20	> 1 w	0.1648132	0.1235536	0.0140271
EARTH	2050-12-02 00:50	> 1 w	0.1050924	0.0473328	0.0371491
EARTH	2055-12-14 15:42	> 1 d	0.0491977	0.0482393	0.0114336
EARTH	2060-12-21 15:38	> 1 w	0.0969237	0.0479309	0.1055094

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
323.87956674	219.85534923	0.01000847	MINIMUM
33.53332295	341.39807369	0.04913867	MINIMUM
358.89691328	281.18096278	0.18747939	SADDLE
358.30896141	100.08866750	1.81895208	SADDLE
179.56252042	101.51502975	1.87010247	SADDLE
179.47625520	281.47112861	3.86481434	MAXIMUM

Download:

MOID Plots

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