Asteroids

2019UJ3 help

Last update: 2025-09-10 00:30 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.725

Aphelion (Q)

1.352

Eccentricity (e)

0.302

Inclination (i)

1.1

deg

Orbit period (P)

386.5

Earth MOID

0.01665

U parameter

6.9

Next Earth close approach

Date

2037-10-24

Nominal distance (from Earth center)

0.15543

23252506

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.8

mag

Diameter

18 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2019-10-22

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

1.038451

1-sigma variation

0.000090

Unit

Eccentricity (e)

Value

0.301725

1-sigma variation

0.000434

Unit

Inclination (i)

Value

1.0536

1-sigma variation

0.0004

Unit

Long. of Ascending Node (Ω)

Value

303.1362

1-sigma variation

0.1729

Unit

Arg. of Perihelion (ω)

Value

193.8835

1-sigma variation

0.1860

Unit

Mean Anomaly (M)

Value

197.71125

1-sigma variation

0.39249

Unit

Perihelion distance

Value

0.725125

1-sigma variation

Unit

Aphelion distance

Value

1.351778

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.318368

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.254780

1-sigma variation

Unit

MOID

Value

0.016646

1-sigma variation

Unit

Orbit Period

Value

386.5251

1-sigma variation

Unit

U parameter

Value

6.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	8.18456E-9	3.92482E-8	3.97769E-8	1.56322E-5	-1.68184E-5	-3.55081E-5
e	3.92482E-8	1.88213E-7	1.90758E-7	7.49612E-5	-8.06488E-5	-1.70274E-4
i	3.97769E-8	1.90758E-7	1.93888E-7	7.61143E-5	-8.18749E-5	-1.72568E-4
Ω	1.56322E-5	7.49612E-5	7.61143E-5	2.99054E-2	-3.21708E-2	-6.78220E-2
ω	-1.68184E-5	-8.06488E-5	-8.18749E-5	-3.21708E-2	3.46081E-2	7.29682E-2
M	-3.55081E-5	-1.70274E-4	-1.72568E-4	-6.78220E-2	7.29682E-2	1.54050E-1

Date of computation: 2025-09-10 00:30 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

25.843

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

2157

Unit

Source

[1]

Normalized RMS of residuals

Value

0.551037

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2019-10-19.350936

Unit

Source

[2]

Last Observation

Value

2019-10-26.14992

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

28 (1)

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 2019UJ3 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	1963-10-30 19:25	> 1 w	0.0185409	0.0185388	0.0024927
EARTH	1967-05-21 15:45	> 1 d	0.0199321	0.0179078	0.0527203
EARTH	1982-11-01 12:49	> 1 d	0.1372400	0.0303316	0.0368761
VENUS	1985-02-14 02:16	> 1 d	0.0298168	0.0297458	0.0008872
EARTH	1985-04-16 03:19	> 1 w	0.1789125	0.1516030	0.0091200
EARTH	1985-06-02 22:30	> 1 d	0.1794487	0.1464724	0.0110093
EARTH	1986-05-28 09:40	685.8	0.1616309	0.1287929	0.0109610
EARTH	2000-10-26 05:30	1422.4	0.1069567	0.0431128	0.0217654
EARTH	2004-05-18 13:14	1181.9	0.0637373	0.0170012	0.0255165
EARTH	2019-10-31 12:36	< 1 min	0.0187046	0.0186167	0.0000293
EARTH	2023-05-23 02:41	273.5	0.0390187	0.0276071	0.0039911
EARTH	2037-10-24 14:49	389.7	0.1554334	0.1327392	0.0075743
EARTH	2038-10-11 12:51	> 1 d	0.1999050	0.1836443	0.0054228
EARTH	2038-12-14 06:45	> 1 d	0.1937744	0.1809950	0.0042638
EARTH	2041-05-17 20:51	207.4	0.0930224	0.0768642	0.0054061
EARTH	2056-11-03 11:44	85.9	0.0989304	0.0958863	0.0010155
EARTH	2059-04-09 19:15	> 1 d	0.1916923	0.1846084	0.0023619
EARTH	2059-06-08 21:39	> 1 d	0.1955553	0.1869561	0.0028669
VENUS	2060-03-07 11:13	> 1 d	0.0320864	0.0300082	0.0009448
EARTH	2060-05-27 17:26	170.8	0.1530819	0.1397854	0.0044350
EARTH	2074-11-01 04:14	> 1 d	0.0200242	0.0173409	0.0126904
EARTH	2078-05-25 18:46	> 1 d	0.1045202	0.0148180	0.0776242
EARTH	2092-11-03 20:58	> 1 d	0.1266292	0.0171461	0.1416977
EARTH	2095-05-18 22:52	> 1 w	0.1376731	0.0163837	0.1292470
EARTH	2109-10-25 18:19	> 1 d	0.1600486	0.0174684	0.1468630
EARTH	2110-12-16 14:48	> 1 mo	0.1953535	0.0373037	0.0881686
EARTH	2113-05-19 14:31	> 1 d	0.0705278	0.0149495	0.1897066

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
85.20133712	137.07536708	0.01667478	MINIMUM
278.43845579	296.29142215	0.01823235	MINIMUM
2.51149664	37.42713049	0.26161477	SADDLE
181.35343734	216.17835336	0.33855920	SADDLE
2.52006911	217.41864165	1.73827153	SADDLE
181.26587828	36.10271686	2.33836759	MAXIMUM

Download:

MOID Plots

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