Asteroids

2020MA1 help

Last update: 2024-04-27 12:42 UTC

Orbital Properties

Epoch

60400.0

MJD

Orbit type

Aten

Perihelion (q)

0.706

Aphelion (Q)

1.060

Eccentricity (e)

0.200

Inclination (i)

4.9

deg

Orbit period (P)

303.0

Earth MOID

0.03111

U parameter

6.9

Next Earth close approach

Date

2025-07-21

Nominal distance (from Earth center)

0.05772

8634747

Maximum Brightness

20.5

mag

Risk

Object is in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

25.3

mag

Diameter

23 - 50*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2020-06-21

Observatory

Pan-STARRS 1, Haleakala

Orbit Visualiser

Click the button to start Orbit Visualiser

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

60400.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.882780

1-sigma variation

0.000081

Unit

Eccentricity (e)

Value

0.200260

1-sigma variation

0.000184

Unit

Inclination (i)

Value

4.9261

1-sigma variation

0.0058

Unit

Long. of Ascending Node (Ω)

Value

102.0838

1-sigma variation

0.0032

Unit

Arg. of Perihelion (ω)

Value

8.8422

1-sigma variation

0.0025

Unit

Mean Anomaly (M)

Value

345.37609

1-sigma variation

0.22668

Unit

Perihelion distance

Value

0.705995

1-sigma variation

Unit

Aphelion distance

Value

1.059566

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.275240

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.039715

1-sigma variation

Unit

MOID

Value

0.031114

1-sigma variation

Unit

Orbit Period

Value

302.9546

1-sigma variation

Unit

U parameter

Value

6.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.63516E-9	-1.49975E-8	-4.69688E-7	2.59040E-7	-1.99600E-7	-1.84643E-5
e	-1.49975E-8	3.38991E-8	1.06166E-6	-5.85538E-7	4.51206E-7	4.17351E-5
i	-4.69688E-7	1.06166E-6	3.32536E-5	-1.83461E-5	1.41396E-5	1.30705E-3
Ω	2.59040E-7	-5.85538E-7	-1.83461E-5	1.01298E-5	-7.80986E-6	-7.20852E-4
ω	-1.99600E-7	4.51206E-7	1.41396E-5	-7.80986E-6	6.02791E-6	5.55434E-4
M	-1.84643E-5	4.17351E-5	1.30705E-3	-7.20852E-4	5.55434E-4	5.13827E-2

Date of computation: 2024-04-23 10:08 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

25.337

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

23 - 50*

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

[-]

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Sources

No.	Name	Additional
[1]	ESA ODIM	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

1401

Unit

Source

[1]

Normalized RMS of residuals

Value

0.702801

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2020-06-11.263774

Unit

Source

[2]

Last Observation

Value

2020-06-26.30338

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

29 (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

[3]

Last Observation

Value

Unit

Source

[3]

Delay (Discarded)

Value

0 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

0 (0)

Unit

Source

[1]

Note: The ASCII file is in a format suitable for Orbfit input.

Sources

No.	Name	Additional
[1]	ESA ODIM	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 2020MA1 from 1950 to 2124

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possibile distance in au	Distance uncert. in au
EARTH	1952-08-22 17:16	938.8	0.1602687	0.0812448	0.0293764
VENUS	1953-09-16 13:39	> 1 w	0.0248257	0.0247639	0.0013991
VENUS	1970-05-02 01:25	> 1 w	0.0244951	0.0241393	0.0015799
EARTH	1976-06-05 16:53	334.0	0.1570182	0.1219513	0.0118134
EARTH	1981-06-06 20:20	149.5	0.0669811	0.0561786	0.0037670
EARTH	1986-06-15 14:54	> 1 d	0.0333510	0.0332434	0.0003157
VENUS	1986-12-20 22:09	> 1 d	0.0189009	0.0101822	0.0032188
EARTH	1991-07-13 20:49	> 1 d	0.0469965	0.0447900	0.0009126
EARTH	1996-08-13 01:55	197.7	0.0580073	0.0579849	0.0000116
EARTH	2001-08-20 16:52	249.8	0.1508360	0.1373519	0.0045395
VENUS	2003-07-07 22:49	> 1 d	0.0285264	0.0253951	0.0032112
EARTH	2015-06-06 17:46	81.4	0.1616391	0.1490633	0.0042031
EARTH	2020-06-13 06:55	< 1 min	0.0337672	0.0336606	0.0000355
VENUS	2025-02-26 22:00	> 1 d	0.0104431	0.0005470	0.0043250
EARTH	2025-07-21 04:07	426.0	0.0577197	0.0472193	0.0036334
EARTH	2030-06-10 04:58	> 1 w	0.0376952	0.0355671	0.0282948
VENUS	2034-04-08 18:12	> 1 mo	0.0405824	0.0244446	0.2241056
EARTH	2035-06-05 16:19	> 1 d	0.1658014	0.0436240	0.2011578
VENUS	2055-04-01 23:07	> 1 mo	0.0171617	0.0113746	0.1045909
EARTH	2056-08-22 08:22	> 1 w	0.1089447	0.0586621	0.1535228
EARTH	2061-08-18 01:54	> 1 mo	0.0697521	0.0632879	0.1666038
EARTH	2066-08-11 17:05	> 1 mo	0.0604481	0.0593695	0.1622228
VENUS	2066-11-29 01:55	> 1 mo	0.0212884	0.0207758	0.1602522
EARTH	2071-08-17 03:27	> 1 mo	0.0692363	0.0614008	1.5473322
EARTH	2076-08-21 03:06	> 1 mo	0.1034039	0.0652395	4.7466753
EARTH	2081-08-21 01:57	> 1 mo	0.1803075	0.0679991	5.9717428
VENUS	2100-03-25 12:57	> 1 mo	0.0433789	0.0049511	23.2005583
EARTH	2105-06-06 22:15	> 1 mo	0.1514958	0.0385327	22.7421953
EARTH	2110-06-06 23:11	> 1 mo	0.1093331	0.0373067	57.9784902
VENUS	2114-05-13 12:47	> 1 mo	0.0105608	0.0022641	80.9376457
EARTH	2115-06-05 16:25	> 1 mo	0.1225550	0.0406252	213.5383459

Download as:

2020MA1

Date in UTC	MJD	σ	σ_imp	Distance ± Width in RE	Stretching in RE/σ	IP	Exp. energy	PS	TS
2101-07-06.611	88620.611	-2.937	0.000	1.00 ± 0.000	1.67E8	1.93E-10	9.07E-11	-10.34	0


Based on 29 optical observations (of which 0 are rejected as outliers) from 2020/06/11.264 to 2020/06/26.303.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 3.17 and 3.17 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
AstOD software version= 4.0, Date of computation=20240110 090431.829 UTC.

Download this part as:

Download Impactor Table as: