Asteroids

2020JM help

Last update: 2024-12-13 06:32 UTC

Orbital Properties

Epoch

60600.0

MJD

Orbit type

Apollo

Perihelion (q)

0.853

Aphelion (Q)

1.571

Eccentricity (e)

0.297

Inclination (i)

5.2

deg

Orbit period (P)

487.3

Earth MOID

0.02567

U parameter

8.9

Next Earth close approach

Date

2028-04-29

Nominal distance (from Earth center)

0.02786

4167178

Maximum Brightness

20.8

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

16 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2020-05-03

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

60600.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.211900

1-sigma variation

0.003228

Unit

Eccentricity (e)

Value

0.296522

1-sigma variation

0.001279

Unit

Inclination (i)

Value

5.1777

1-sigma variation

0.0131

Unit

Long. of Ascending Node (Ω)

Value

53.4261

1-sigma variation

0.0083

Unit

Arg. of Perihelion (ω)

Value

92.3429

1-sigma variation

0.3181

Unit

Mean Anomaly (M)

Value

169.38034

1-sigma variation

1.94960

Unit

Perihelion distance

Value

0.852546

1-sigma variation

Unit

Aphelion distance

Value

1.571255

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.130315

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.082952

1-sigma variation

Unit

MOID

Value

0.025666

1-sigma variation

Unit

Orbit Period

Value

487.3025

1-sigma variation

Unit

U parameter

Value

8.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.04184E-5	4.12697E-6	4.23117E-5	2.66607E-5	1.02662E-3	-6.29285E-3
e	4.12697E-6	1.63478E-6	1.67606E-5	1.05609E-5	4.06667E-4	-2.49273E-3
i	4.23117E-5	1.67606E-5	1.71847E-4	1.08276E-4	4.16934E-3	-2.55567E-2
Ω	2.66607E-5	1.05609E-5	1.08276E-4	6.82251E-5	2.62711E-3	-1.61034E-2
ω	1.02662E-3	4.06667E-4	4.16934E-3	2.62711E-3	1.01162E-1	-6.20090E-1
M	-6.29285E-3	-2.49273E-3	-2.55567E-2	-1.61034E-2	-6.20090E-1	3.80095E0

Date of computation: 2024-12-09 13:46 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

26.042

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

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 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

1673

Unit

Source

[1]

Normalized RMS of residuals

Value

0.6564

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2020-05-03.35845

Unit

Source

[2]

Last Observation

Value

2020-05-15.46559

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

32 (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 2020JM 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	1975-12-01 21:02	> 1 d	0.1462975	0.0344894	0.1358402
EARTH	1979-12-06 15:31	> 1 w	0.0672805	0.0363759	0.0957254
EARTH	1983-12-10 12:33	> 1 d	0.0370817	0.0370775	0.0005712
EARTH	1987-12-14 18:04	> 1 w	0.0569493	0.0365198	0.0490536
EARTH	1991-12-27 21:56	> 1 w	0.1057744	0.0266450	0.0612280
EARTH	1996-01-24 01:45	> 1 mo	0.1443516	0.0612049	0.0278290
EARTH	2000-02-15 05:49	> 1 mo	0.1573954	0.1515378	0.0020399
EARTH	2004-03-07 03:38	> 1 mo	0.1502881	0.0963978	0.0182515
EARTH	2008-03-30 06:16	> 1 w	0.1226910	0.0068713	0.0386719
EARTH	2012-04-19 01:50	> 1 w	0.0765101	0.0209794	0.0432276
EARTH	2016-04-25 16:23	> 1 d	0.0386681	0.0246377	0.0189165
EARTH	2020-04-27 12:57	< 1 min	0.0273948	0.0272076	0.0000624
EARTH	2024-04-28 06:11	> 1 d	0.0252649	0.0250887	0.0028985
EARTH	2028-04-29 13:16	> 1 w	0.0278559	0.0249769	0.0546901
EARTH	2032-05-03 18:46	> 1 w	0.0768142	0.0240586	0.3559409
EARTH	2036-05-08 23:21	> 1 w	0.1630397	0.0216489	0.4949584
EARTH	2086-12-04 01:00	> 1 mo	0.1145941	0.0384379	0.8587238
EARTH	2090-12-08 08:11	> 1 mo	0.0531812	0.0399211	0.4555088
EARTH	2094-12-11 03:07	> 1 mo	0.0405018	0.0403532	0.0353156
EARTH	2098-12-13 17:52	> 1 mo	0.0517236	0.0400918	0.4076816
EARTH	2102-12-20 18:03	> 1 mo	0.0836779	0.0369531	0.9167753
EARTH	2107-01-09 22:33	> 1 mo	0.1261075	0.0207856	0.8570290
EARTH	2111-02-02 03:55	> 1 mo	0.1518081	0.0253979	0.3834627
EARTH	2115-02-22 06:19	> 1 mo	0.1576995	0.1256570	0.0798653
EARTH	2119-03-15 02:41	> 1 mo	0.1451021	0.0303618	0.6112482
EARTH	2123-04-07 01:34	> 1 mo	0.1132136	0.0029632	1.2030041

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
56.81566443	115.66315943	0.02507005	MINIMUM
306.97775797	335.96941581	0.03780933	MINIMUM
1.84136873	45.58741619	0.15820130	SADDLE
181.26905048	225.27358834	0.57107593	SADDLE
2.63781230	226.63892889	1.86200051	SADDLE
181.44130954	45.39127132	2.55657310	MAXIMUM

Download:

MOID Plots

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