Asteroids

2019UN13 help

Last update: 2025-07-29 02:36 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.838

Aphelion (Q)

2.061

Eccentricity (e)

0.422

Inclination (i)

1.5

deg

Orbit period (P)

637.6

Earth MOID

0.00011

U parameter

8.0

Next Earth close approach

Date

2026-10-22

Nominal distance (from Earth center)

0.11401

17055616

Maximum Brightness

30.1

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

1.0 - 2.3*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2019-10-31

Observatory

Catalina Sky 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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.449763

1-sigma variation

0.001063

Unit

Eccentricity (e)

Value

0.421721

1-sigma variation

0.000404

Unit

Inclination (i)

Value

1.5048

1-sigma variation

0.0019

Unit

Long. of Ascending Node (Ω)

Value

217.4283

1-sigma variation

0.0002

Unit

Arg. of Perihelion (ω)

Value

241.9147

1-sigma variation

0.2383

Unit

Mean Anomaly (M)

Value

30.78126

1-sigma variation

1.73515

Unit

Perihelion distance

Value

0.838368

1-sigma variation

Unit

Aphelion distance

Value

2.061158

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.481397

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.001284

1-sigma variation

Unit

MOID

Value

0.000113

1-sigma variation

Unit

Orbit Period

Value

637.5935

1-sigma variation

Unit

U parameter

Value

8.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.13064E-6	4.25681E-7	-1.88975E-6	2.30712E-7	-2.52603E-4	-1.84499E-3
e	4.25681E-7	1.63121E-7	-6.83399E-7	8.35186E-8	-9.40935E-5	-6.94176E-4
i	-1.88975E-6	-6.83399E-7	3.52877E-6	-4.10804E-7	4.32136E-4	3.08822E-3
Ω	2.30712E-7	8.35186E-8	-4.10804E-7	5.16440E-8	-5.27293E-5	-3.77014E-4
ω	-2.52603E-4	-9.40935E-5	4.32136E-4	-5.27293E-5	5.67932E-2	4.12362E-1
M	-1.84499E-3	-6.94176E-4	3.08822E-3	-3.77014E-4	4.12362E-1	3.01075E0

Date of computation: 2025-07-29 02:36 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

32.022

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

1.0 - 2.3*

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 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

0.2

Unit

Source

[1]

Unobserved

Value

2118

Unit

Source

[1]

Normalized RMS of residuals

Value

0.842194

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2019-10-31.28274

Unit

Source

[2]

Last Observation

Value

2019-10-31.435581

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

18 (2)

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 2019UN13 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	1958-06-21 03:04	332.5	0.1809487	0.1640986	0.0056197
EARTH	1959-06-16 12:55	317.9	0.0593939	0.0437025	0.0053341
EARTH	1960-06-12 20:07	62.1	0.0653816	0.0510421	0.0048369
EARTH	1961-06-25 16:55	1325.0	0.1787344	0.1684721	0.0034212
EARTH	1968-10-16 00:18	> 1 d	0.1851361	0.1745678	0.0035238
EARTH	1969-10-31 13:08	93.1	0.0733011	0.0564671	0.0056116
EARTH	1970-10-29 11:38	286.2	0.0468341	0.0277831	0.0063555
EARTH	1971-10-24 23:27	287.6	0.1708461	0.1535451	0.0057674
EARTH	2007-06-19 16:19	359.7	0.1372668	0.1162048	0.0070333
EARTH	2008-06-14 12:14	266.1	0.0239550	0.0188263	0.0040051
EARTH	2009-06-13 15:35	297.5	0.0985760	0.0804251	0.0060746
EARTH	2010-07-01 01:38	> 1 d	0.1976317	0.1848725	0.0042539
EARTH	2018-10-30 20:14	69.7	0.1094725	0.1077304	0.0005807
EARTH	2019-10-31 14:44	< 1 min	0.0000843	0.0000835	0.0000003
MARS	2023-10-26 22:04	940.1	0.0157702	0.0001779	0.0366152
EARTH	2026-10-22 01:27	> 1 d	0.1140098	0.0007787	0.0680002
EARTH	2067-03-16 18:33	> 1 d	0.1946611	0.0210054	0.1291396
EARTH	2074-03-10 02:07	> 1 d	0.0930264	0.0213426	0.0960657
EARTH	2081-03-04 08:24	> 1 d	0.0310504	0.0214491	0.0169307
EARTH	2088-03-05 05:51	> 1 d	0.0409651	0.0215091	0.0560260
EARTH	2095-03-13 03:07	> 1 d	0.1319035	0.0212582	0.0757922

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
318.37596066	296.36039355	0.00011297	MINIMUM
41.53016387	57.78729088	0.02172182	MINIMUM
0.12791093	357.35169062	0.14680123	SADDLE
179.98344858	177.06619100	1.04540491	SADDLE
359.89119875	176.98936168	1.85453223	SADDLE
179.93900359	357.03838563	3.04464373	MAXIMUM

Download:

MOID Plots

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

Level lines of the squared distance function

2019UN13

Date in UTC	MJD	σ	σ_imp	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS	TS
2109-10-31.701	91659.701	0.481	0.000	0.35 ± 0.000	6.32E7	1.65E-8	7.27E-5	-11.49	0
2111-11-01.175	92390.175	0.477	0.000	1.37 ± 0.064	1.30E6	3.28E-7	7.29E-5	-10.21	0


Based on 18 optical observations (of which 2 are rejected as outliers) from 2019/10/31.283 to 2019/10/31.436.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.48 and 1.48 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
AstOD software version= 4.0, Date of computation=20250805 130500.123 UTC.

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Download Impactor Table as: