Asteroids

2019AU help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.994

Aphelion (Q)

1.220

Eccentricity (e)

0.102

Inclination (i)

5.0

deg

Orbit period (P)

425.4

Earth MOID

0.01883

U parameter

6.1

Next Earth close approach

Date

2033-04-19

Nominal distance (from Earth center)

0.19083

28547387

Maximum Brightness

24.8

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.8

mag

Diameter

12 - 26*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2019-01-03

Observatory

Pan-STARRS 1, 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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.107009

1-sigma variation

0.000039

Unit

Eccentricity (e)

Value

0.102377

1-sigma variation

0.000031

Unit

Inclination (i)

Value

5.0007

1-sigma variation

0.0011

Unit

Long. of Ascending Node (Ω)

Value

109.3107

1-sigma variation

0.0030

Unit

Arg. of Perihelion (ω)

Value

332.3398

1-sigma variation

0.0008

Unit

Mean Anomaly (M)

Value

342.51215

1-sigma variation

0.07522

Unit

Perihelion distance

Value

0.993676

1-sigma variation

Unit

Aphelion distance

Value

1.220342

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.020606

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.186686

1-sigma variation

Unit

MOID

Value

0.018832

1-sigma variation

Unit

Orbit Period

Value

425.4272

1-sigma variation

Unit

U parameter

Value

6.1

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.52964E-9	1.21379E-9	4.21002E-8	-1.17401E-7	-3.21601E-8	-2.94203E-6
e	1.21379E-9	9.63168E-10	3.34074E-8	-9.31604E-8	-2.55341E-8	-2.33453E-6
i	4.21002E-8	3.34074E-8	1.15882E-6	-3.23128E-6	-8.86001E-7	-8.09727E-5
Ω	-1.17401E-7	-9.31604E-8	-3.23128E-6	9.01078E-6	2.46952E-6	2.25803E-4
ω	-3.21601E-8	-2.55341E-8	-8.86001E-7	2.46952E-6	6.99770E-7	6.18351E-5
M	-2.94203E-6	-2.33453E-6	-8.09727E-5	2.25803E-4	6.18351E-5	5.65858E-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

26.761

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

12 - 26*

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

2531

Unit

Source

[1]

Normalized RMS of residuals

Value

0.53374

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2019-01-03.37873

Unit

Source

[2]

Last Observation

Value

2019-02-02.216708

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

51 (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 2019AU from 1950 to 2126

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1953-08-30 18:36	> 1 w	0.1318333	0.1257646	0.0024342
EARTH	1954-01-11 14:35	372.7	0.0977063	0.0715396	0.0087644
EARTH	1960-12-31 22:59	> 1 d	0.0472542	0.0152443	0.0139351
EARTH	1975-07-05 21:03	> 1 d	0.1889256	0.1868152	0.0007674
EARTH	1982-09-27 07:29	90.0	0.1146073	0.1144786	0.0000430
EARTH	1983-01-08 13:36	16.6	0.0453295	0.0450218	0.0001026
EARTH	1989-12-21 21:36	878.3	0.0896452	0.0745510	0.0050339
EARTH	2011-07-31 14:33	> 1 d	0.1653576	0.1642875	0.0003661
EARTH	2019-01-05 21:06	< 1 min	0.0199725	0.0199599	0.0000042
EARTH	2025-12-30 16:51	293.6	0.0490795	0.0445620	0.0015118
EARTH	2033-04-19 14:27	513.9	0.1908275	0.1907499	0.0000259
EARTH	2047-07-22 00:59	> 1 d	0.1771036	0.1748147	0.0008048
EARTH	2054-09-22 07:06	> 1 w	0.1230087	0.1182286	0.0018178
EARTH	2055-01-09 18:36	439.5	0.0625392	0.0474482	0.0050775
EARTH	2061-12-31 22:45	798.8	0.0386780	0.0266887	0.0041800
EARTH	2069-05-05 20:41	> 1 d	0.1986921	0.1973189	0.0004645
EARTH	2076-07-02 00:20	88.5	0.1917450	0.1914097	0.0001119
EARTH	2083-09-07 02:55	> 1 d	0.1324744	0.1315427	0.0003381
EARTH	2084-01-11 16:19	122.1	0.0934799	0.0894910	0.0013298
EARTH	2090-12-09 20:23	147.4	0.1227597	0.1167838	0.0019958
EARTH	2105-07-14 20:09	798.6	0.1832302	0.1828843	0.0001189
EARTH	2113-01-09 07:09	34.0	0.0526722	0.0500693	0.0008702
EARTH	2119-12-26 07:56	98.2	0.0731387	0.0706305	0.0008362

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
20.68614215	3.17700855	0.01883234	MINIMUM
164.96005151	146.41305180	0.21107328	SADDLE
354.88773933	155.20953571	2.01007029	SADDLE
177.94008288	338.28662259	2.20450319	MAXIMUM

Download:

MOID Plots

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