Asteroids

2020FH4 help

Last update: 2026-07-30 14:25 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

1.002

Aphelion (Q)

1.331

Eccentricity (e)

0.141

Inclination (i)

2.9

deg

Orbit period (P)

460.2

Earth MOID

0.00899

U parameter

6.9

Next Earth close approach

Date

2054-03-02

Nominal distance (from Earth center)

0.03231

4833530

Maximum Brightness

23.4

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

28.4

mag

Diameter

6 - 12*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2020-03-24

Observatory

University of Arizona 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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.166529

1-sigma variation

0.000171

Unit

Eccentricity (e)

Value

0.140675

1-sigma variation

0.000104

Unit

Inclination (i)

Value

2.8936

1-sigma variation

0.0023

Unit

Long. of Ascending Node (Ω)

Value

180.7197

1-sigma variation

0.0238

Unit

Arg. of Perihelion (ω)

Value

348.1411

1-sigma variation

0.0597

Unit

Mean Anomaly (M)

Value

354.93513

1-sigma variation

0.03848

Unit

Perihelion distance

Value

1.002428

1-sigma variation

Unit

Aphelion distance

Value

1.330630

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.009111

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.322121

1-sigma variation

Unit

MOID

Value

0.008993

1-sigma variation

Unit

Orbit Period

Value

460.1949

1-sigma variation

Unit

U parameter

Value

6.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.93730E-8	1.78578E-8	-3.93480E-7	-4.07804E-6	1.02389E-5	-6.59443E-6
e	1.78578E-8	1.08570E-8	-2.39221E-7	-2.47931E-6	6.22488E-6	-4.00918E-6
i	-3.93480E-7	-2.39221E-7	5.27112E-6	5.46294E-5	-1.37161E-4	8.83397E-5
Ω	-4.07804E-6	-2.47931E-6	5.46294E-5	5.66180E-4	-1.42153E-3	9.15549E-4
ω	1.02389E-5	6.22488E-6	-1.37161E-4	-1.42153E-3	3.56911E-3	-2.29872E-3
M	-6.59443E-6	-4.00918E-6	8.83397E-5	9.15549E-4	-2.29872E-3	1.48051E-3

Date of computation: 2026-07-30 14:25 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

28.416

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

6 - 12*

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

2388

Unit

Source

[1]

Normalized RMS of residuals

Value

0.592098

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2020-03-24.2948

Unit

Source

[2]

Last Observation

Value

2020-04-03.62014

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

76 (0)

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

Filters

Initial Date: *

Final Date: *

Normalised Only accepted

Max residual (arcsec):

* - these fields are required

Plot

Computation parameters

As seen from:

Initial Date: *

Final Date: *

Output option:

One line per time step

Time step:*

* - these fields are required

Note: Ephemerides requests are limited to a maximum of 1000 points and a final date not exceeding 2040/12/31 00:00.

Close Approaches for 2020FH4 from 1950 to 2126

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1977-12-14 17:26	> 1 mo	0.1696035	0.1198479	0.0173380
EARTH	1978-04-18 20:25	> 1 d	0.1267202	0.0321171	0.0317844
EARTH	1983-03-05 21:05	> 1 d	0.0237727	0.0082524	0.0052379
EARTH	1998-12-28 20:00	> 1 w	0.1475240	0.1357781	0.0039279
EARTH	1999-04-15 18:49	734.0	0.0940704	0.0768577	0.0057444
EARTH	2020-03-22 21:25	< 1 min	0.0084694	0.0084648	0.0000015
EARTH	2025-04-04 23:13	590.7	0.0327685	0.0290095	0.0012531
EARTH	2054-03-02 08:40	> 1 w	0.0323102	0.0038979	0.0264308
EARTH	2059-03-15 14:44	> 1 mo	0.0101088	0.0062580	0.0746702
EARTH	2075-04-20 17:13	> 1 mo	0.0931703	0.0174713	1.3215500
EARTH	2096-03-15 16:33	> 1 mo	0.0086864	0.0063321	1.0719989
EARTH	2113-03-06 08:45	> 1 mo	0.0311509	0.0000990	105.9745842
EARTH	2119-01-10 18:59	> 1 mo	0.1408413	0.0302870	592.2306264
EARTH	2119-04-26 21:23	> 1 mo	0.0991597	0.0265579	816.1641461

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
9.15659552	74.08755900	0.00899333	MINIMUM
184.29112219	248.86223177	0.32411757	SADDLE
6.32725089	250.84257855	2.00882137	SADDLE
184.75737625	69.26046651	2.32411465	MAXIMUM

Download:

MOID Plots

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