Asteroids

2020JG help

Last update: 2025-04-09 07:59 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Aten

Perihelion (q)

0.461

Aphelion (Q)

1.269

Eccentricity (e)

0.467

Inclination (i)

6.1

deg

Orbit period (P)

293.9

Earth MOID

0.00071

U parameter

6.4

Next Earth close approach

Date

2025-08-02

Nominal distance (from Earth center)

0.11865

17749697

Maximum Brightness

24.7

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

25.8

mag

Diameter

18 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2020-05-02

Observatory

ATLAS-HKO, Haleakala

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

0.865193

1-sigma variation

0.000028

Unit

Eccentricity (e)

Value

0.467049

1-sigma variation

0.000444

Unit

Inclination (i)

Value

6.1050

1-sigma variation

0.0087

Unit

Long. of Ascending Node (Ω)

Value

220.2291

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

225.6970

1-sigma variation

0.0033

Unit

Mean Anomaly (M)

Value

167.20369

1-sigma variation

0.17310

Unit

Perihelion distance

Value

0.461105

1-sigma variation

Unit

Aphelion distance

Value

1.269281

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.003284

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.482066

1-sigma variation

Unit

MOID

Value

0.000710

1-sigma variation

Unit

Orbit Period

Value

293.9465

1-sigma variation

Unit

U parameter

Value

6.4

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	7.92807E-10	1.24797E-8	2.45522E-7	4.18233E-10	-9.30840E-8	-4.87345E-6
e	1.24797E-8	1.96820E-7	3.87225E-6	8.53893E-9	-1.47179E-6	-7.67584E-5
i	2.45522E-7	3.87225E-6	7.61832E-5	1.68628E-7	-2.89569E-5	-1.51013E-3
Ω	4.18233E-10	8.53893E-9	1.68628E-7	1.14309E-8	-8.34412E-8	-2.80511E-6
ω	-9.30840E-8	-1.47179E-6	-2.89569E-5	-8.34412E-8	1.10431E-5	5.72975E-4
M	-4.87345E-6	-7.67584E-5	-1.51013E-3	-2.80511E-6	5.72975E-4	2.99628E-2

Date of computation: 2025-04-09 07:59 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

25.821

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

18 - 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

1880

Unit

Source

[1]

Normalized RMS of residuals

Value

0.448872

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2020-05-02.479231

Unit

Source

[2]

Last Observation

Value

2020-05-11.31392

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

45 (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

Close Approaches for 2020JG 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	1957-07-24 10:15	> 1 d	0.1715758	0.1561935	0.0053302
EARTH	1961-07-30 04:07	91.5	0.1369211	0.1301623	0.0024174
EARTH	1964-04-30 13:36	< 1 min	0.0076737	0.0073530	0.0001070
EARTH	1976-07-29 18:02	269.8	0.1266635	0.1176880	0.0035742
EARTH	1979-05-01 23:01	404.5	0.0529733	0.0214914	0.0104955
EARTH	1987-07-19 03:27	> 1 d	0.1923171	0.1775587	0.0050708
EARTH	1990-05-05 07:44	531.5	0.1752899	0.1408405	0.0114832
EARTH	1991-07-27 21:58	455.3	0.1855413	0.1628603	0.0078809
EARTH	1994-05-08 05:47	> 1 d	0.1385514	0.1132858	0.0084261
EARTH	2002-07-29 10:52	523.1	0.1360893	0.1263709	0.0036254
EARTH	2005-05-02 01:56	271.9	0.0732893	0.0480842	0.0084017
EARTH	2009-05-19 15:02	> 1 d	0.1997644	0.1896395	0.0033776
EARTH	2017-07-30 23:05	9.1	0.1129905	0.1125629	0.0001427
EARTH	2020-04-30 19:37	< 1 min	0.0014298	0.0014248	0.0000017
EARTH	2024-05-03 19:47	62.2	0.1356177	0.1318357	0.0012607
EARTH	2025-08-02 19:02	83.4	0.1186494	0.1154975	0.0011592
EARTH	2029-08-02 04:05	275.2	0.1351964	0.1280009	0.0025079
EARTH	2049-05-09 21:28	1372.3	0.1566335	0.1409983	0.0052134
EARTH	2053-05-01 08:27	162.7	0.0434519	0.0219767	0.0071602
EARTH	2057-05-02 07:45	175.2	0.0684610	0.0536263	0.0049450
EARTH	2058-08-01 02:06	183.9	0.1621299	0.1507841	0.0039179
EARTH	2061-05-06 03:28	70.6	0.1891024	0.1853490	0.0012511
EARTH	2062-08-03 21:41	32.3	0.1078215	0.1075350	0.0001325
EARTH	2066-07-31 03:10	209.3	0.1551288	0.1518232	0.0011192
EARTH	2086-05-14 13:59	> 1 d	0.1809210	0.1448522	0.0120405
EARTH	2090-05-03 02:34	1365.0	0.0849625	0.0292125	0.0185833
EARTH	2094-05-01 20:05	389.4	0.0233552	0.0018925	0.0194049
EARTH	2095-07-31 08:08	205.5	0.1926881	0.1698766	0.0078466
EARTH	2098-05-05 19:04	484.3	0.1687526	0.1391663	0.0098622
EARTH	2099-08-04 09:26	626.5	0.1086174	0.1076643	0.0025682
EARTH	2103-07-31 12:25	> 1 d	0.1634651	0.1080147	0.0309308
EARTH	2119-05-17 02:09	> 1 w	0.1872220	0.0215699	0.0907026
EARTH	2123-05-03 20:34	> 1 d	0.0716363	0.0015155	0.1524499

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
110.63222360	117.89902916	0.00068639	MINIMUM
249.26718402	209.73224949	0.10782887	MINIMUM
182.06162063	164.91715507	0.26775780	SADDLE
0.10985773	344.61382210	0.52478721	SADDLE
359.25037452	163.25530583	1.47608147	SADDLE
179.31929975	343.24960784	2.25092142	MAXIMUM

Download:

MOID Plots

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