Asteroids

2019JJ3 help

Last update: 2025-11-24 16:53 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.955

Aphelion (Q)

2.847

Eccentricity (e)

0.498

Inclination (i)

5.9

deg

Orbit period (P)

957.3

Earth MOID

0.00070

U parameter

5.4

Next Earth close approach

Date

2040-04-20

Nominal distance (from Earth center)

0.17384

26006691

Maximum Brightness

26.3

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

27.5

mag

Diameter

9 - 19*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2019-05-08

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.900982

1-sigma variation

0.000050

Unit

Eccentricity (e)

Value

0.497624

1-sigma variation

0.000014

Unit

Inclination (i)

Value

5.8950

1-sigma variation

0.0001

Unit

Long. of Ascending Node (Ω)

Value

48.7172

1-sigma variation

1.930E-5

Unit

Arg. of Perihelion (ω)

Value

213.1221

1-sigma variation

0.0002

Unit

Mean Anomaly (M)

Value

167.80379

1-sigma variation

0.03548

Unit

Perihelion distance

Value

0.955007

1-sigma variation

Unit

Aphelion distance

Value

2.846958

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.461580

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.001570

1-sigma variation

Unit

MOID

Value

0.000701

1-sigma variation

Unit

Orbit Period

Value

957.3386

1-sigma variation

Unit

U parameter

Value

5.4

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.49081E-9	7.03677E-10	4.54554E-9	-3.77064E-11	-8.97442E-9	-1.77088E-6
e	7.03677E-10	1.98888E-10	1.28496E-9	-1.07320E-11	-2.48389E-9	-5.00302E-7
i	4.54554E-9	1.28496E-9	1.18386E-8	-1.15583E-9	-1.48239E-8	-3.23184E-6
Ω	-3.77064E-11	-1.07320E-11	-1.15583E-9	3.72613E-10	-2.85844E-10	2.68221E-8
ω	-8.97442E-9	-2.48389E-9	-1.48239E-8	-2.85844E-10	6.15111E-8	6.37372E-6
M	-1.77088E-6	-5.00302E-7	-3.23184E-6	2.68221E-8	6.37372E-6	1.25903E-3

Date of computation: 2025-11-24 16:53 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

27.461

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

9 - 19*

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

2396

Unit

Source

[1]

Normalized RMS of residuals

Value

0.737121

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2019-05-08.2204

Unit

Source

[2]

Last Observation

Value

2019-05-09.291

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

13 (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

2019-05-09

Unit

Source

[3]

Last Observation

Value

2019-05-09

Unit

Source

[3]

Delay (Discarded)

Value

1 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

1 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

2 (0)

Unit

Source

[1]

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
[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 2019JJ3 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	1957-04-20 22:35	> 1 mo	0.1613951	0.0117563	1.1516653
EARTH	1970-05-07 23:48	> 1 d	0.0087746	0.0010411	0.0129082
EARTH	1988-07-15 10:40	> 1 d	0.0963133	0.0952040	0.0008549
EARTH	2019-05-10 17:36	< 1 min	0.0050404	0.0050403	0.0000000
EARTH	2040-04-20 09:09	469.7	0.1738440	0.1588726	0.0049913
EARTH	2053-08-04 05:39	718.4	0.1652832	0.1512543	0.0048121
EARTH	2074-06-30 02:58	> 1 d	0.0914615	0.0909552	0.0003388
EARTH	2095-05-13 01:07	> 1 d	0.0144563	0.0009699	0.0056315
EARTH	2124-05-03 10:27	> 1 mo	0.0512386	0.0011813	0.3338366

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
340.32151266	125.46291991	0.00049337	MINIMUM
180.44991357	339.81242116	1.86449682	SADDLE
0.81071808	340.51543092	1.93777894	SADDLE
180.07479259	159.60039161	3.86082974	MAXIMUM

Download:

MOID Plots

Click on the images to zoom-in and zoom-out