Asteroids

2020XE1 help

Last update: 2025-02-19 13:28 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.978

Aphelion (Q)

2.212

Eccentricity (e)

0.387

Inclination (i)

12.4

deg

Orbit period (P)

735.7

Earth MOID

0.00131

U parameter

7.3

Next Earth close approach

Date

Nominal distance (from Earth center)

Maximum Brightness

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

26.6

mag

Diameter

13 - 29*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2020-12-05

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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.594896

1-sigma variation

0.000519

Unit

Eccentricity (e)

Value

0.386728

1-sigma variation

0.000218

Unit

Inclination (i)

Value

12.4376

1-sigma variation

0.0145

Unit

Long. of Ascending Node (Ω)

Value

71.6353

1-sigma variation

0.0064

Unit

Arg. of Perihelion (ω)

Value

345.1741

1-sigma variation

0.0205

Unit

Mean Anomaly (M)

Value

76.75140

1-sigma variation

0.66398

Unit

Perihelion distance

Value

0.978104

1-sigma variation

Unit

Aphelion distance

Value

2.211687

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.001402

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

1.152360

1-sigma variation

Unit

MOID

Value

0.001309

1-sigma variation

Unit

Orbit Period

Value

735.6935

1-sigma variation

Unit

U parameter

Value

7.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.69754E-7	1.13296E-7	7.52791E-6	3.33307E-6	-1.06568E-5	-3.44854E-4
e	1.13296E-7	4.75842E-8	3.16167E-6	1.39992E-6	-4.47594E-6	-1.44838E-4
i	7.52791E-6	3.16167E-6	2.10088E-4	9.30041E-5	-2.97371E-4	-9.62371E-3
Ω	3.33307E-6	1.39992E-6	9.30041E-5	4.11960E-5	-1.31706E-4	-4.26100E-3
ω	-1.06568E-5	-4.47594E-6	-2.97371E-4	-1.31706E-4	4.21086E-4	1.36237E-2
M	-3.44854E-4	-1.44838E-4	-9.62371E-3	-4.26100E-3	1.36237E-2	4.40864E-1

Date of computation: 2025-02-19 13:28 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

26.564

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

13 - 29*

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

1613

Unit

Source

[1]

Normalized RMS of residuals

Value

0.842583

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2020-12-05.391941

Unit

Source

[2]

Last Observation

Value

2020-12-08.425844

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

21 (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 2020XE1 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	1970-10-22 05:18	> 1 mo	0.1904092	0.1018817	47.2677702
EARTH	1989-12-03 10:09	> 1 mo	0.0028784	0.0017189	0.1564503
EARTH	2020-12-03 08:22	< 1 min	0.0021822	0.0021762	0.0000020
EARTH	2022-12-11 04:46	> 1 d	0.0499701	0.0100203	0.0134088
EARTH	2024-12-19 15:58	> 1 d	0.1292763	0.0650797	0.0216379
4 Vesta	2039-11-07 11:47	> 1 d	0.0190289	0.0100213	0.0208649
4 Vesta	2076-02-26 09:52	> 1 w	0.0130959	0.0113025	0.0255871
4 Vesta	2094-04-20 04:43	> 1 w	0.0125096	0.0118964	0.0198223
4 Vesta	2112-06-19 05:52	> 1 w	0.0177904	0.0126199	0.0537546

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
9.75372610	330.04432289	0.00230597	MINIMUM
177.80353909	133.51385657	1.20197718	SADDLE
357.25044947	131.96931137	1.98855217	SADDLE
179.76834952	314.80928376	3.19687105	MAXIMUM

Download:

MOID Plots

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