Asteroids

2020DF help

Last update: 2026-03-17 23:26 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Aten

Perihelion (q)

0.505

Aphelion (Q)

1.016

Eccentricity (e)

0.336

Inclination (i)

13.0

deg

Orbit period (P)

242.1

Earth MOID

0.00229

U parameter

7.8

Next Earth close approach

Date

2028-03-10

Nominal distance (from Earth center)

0.15216

22762414

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.1

mag

Diameter

16 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2020-02-16

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.760141

1-sigma variation

0.000184

Unit

Eccentricity (e)

Value

0.335974

1-sigma variation

0.000470

Unit

Inclination (i)

Value

13.0306

1-sigma variation

0.0429

Unit

Long. of Ascending Node (Ω)

Value

322.3757

1-sigma variation

0.0039

Unit

Arg. of Perihelion (ω)

Value

18.4935

1-sigma variation

0.0232

Unit

Mean Anomaly (M)

Value

335.51268

1-sigma variation

1.51061

Unit

Perihelion distance

Value

0.504753

1-sigma variation

Unit

Aphelion distance

Value

1.015528

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.501816

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.002743

1-sigma variation

Unit

MOID

Value

0.002289

1-sigma variation

Unit

Orbit Period

Value

242.0691

1-sigma variation

Unit

U parameter

Value

7.8

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.40147E-8	-8.67155E-8	-7.89816E-6	-7.17228E-7	-4.28101E-6	-2.78602E-4
e	-8.67155E-8	2.21123E-7	2.01494E-5	1.82396E-6	1.09234E-5	7.10241E-4
i	-7.89816E-6	2.01494E-5	1.83773E-3	1.65344E-4	9.96534E-4	6.46872E-2
Ω	-7.17228E-7	1.82396E-6	1.65344E-4	1.55120E-5	8.94754E-5	5.87574E-3
ω	-4.28101E-6	1.09234E-5	9.96534E-4	8.94754E-5	5.40506E-4	3.50616E-2
M	-2.78602E-4	7.10241E-4	6.46872E-2	5.87574E-3	3.50616E-2	2.28193E0

Date of computation: 2026-03-17 23:26 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

26.124

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

16 - 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

2267

Unit

Source

[1]

Normalized RMS of residuals

Value

0.504055

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2020-02-16.14177

Unit

Source

[2]

Last Observation

Value

2020-02-19.036404

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

22 (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

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 2020DF 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	1979-02-06 11:27	421.1	0.1225009	0.0662270	0.0189446
EARTH	1981-02-07 22:00	> 1 d	0.0416874	0.0060488	0.0370081
EARTH	1983-02-14 01:48	> 1 w	0.0219145	0.0044840	0.0715972
EARTH	1985-02-25 03:03	> 1 w	0.0843057	0.0391720	0.0584869
EARTH	1987-03-09 16:50	> 1 w	0.1423122	0.0914368	0.0576777
EARTH	2016-02-07 05:53	265.0	0.1865495	0.1481352	0.0128283
EARTH	2018-02-06 14:14	118.0	0.0913365	0.0724561	0.0063072
EARTH	2020-02-10 23:04	1.2	0.0088398	0.0087765	0.0000211
EARTH	2022-02-14 19:10	1056.6	0.0298346	0.0144616	0.0052245
EARTH	2024-02-22 16:58	> 1 d	0.0712962	0.0489915	0.0077086
EARTH	2026-03-03 02:21	> 1 d	0.1110265	0.0841611	0.0097382
EARTH	2028-03-10 08:32	> 1 d	0.1521573	0.1173867	0.0129986
EARTH	2030-03-15 10:03	996.8	0.1999670	0.1515053	0.0177722
EARTH	2067-02-07 01:11	1000.2	0.1746563	0.0213771	0.0632952
EARTH	2069-02-06 08:08	704.3	0.1058372	0.0134579	0.0593768
EARTH	2071-02-08 09:54	> 1 d	0.0443785	0.0052528	0.0516197
EARTH	2073-02-11 07:19	> 1 d	0.0036138	0.0017161	0.0298636
EARTH	2075-03-01 15:49	> 1 mo	0.1026576	0.0611042	0.2965453
EARTH	2077-03-14 12:04	> 1 w	0.1991457	0.1194905	0.7830120
EARTH	2096-02-06 18:34	> 1 w	0.1336052	0.0168927	5.6216280
EARTH	2098-02-11 03:59	> 1 mo	0.0015577	0.0014866	1.4230130
EARTH	2100-02-19 06:38	> 1 mo	0.0562702	0.0154725	425.1456763
EARTH	2102-03-02 00:59	> 1 mo	0.1096921	0.0587744	744.2175333
EARTH	2104-03-10 05:54	> 1 mo	0.1650478	0.0998532	1181.2100416

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
153.69534157	40.22311922	0.00175046	MINIMUM
0.22703784	241.18148410	0.50694828	SADDLE
356.83136431	56.35275579	1.49588515	SADDLE
176.66180739	236.00211043	2.02443653	MAXIMUM

Download:

MOID Plots

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