Asteroids

2019AQ9 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.712

Aphelion (Q)

2.650

Eccentricity (e)

0.576

Inclination (i)

7.0

deg

Orbit period (P)

796.4

Earth MOID

0.00711

U parameter

7.7

Next Earth close approach

Date

2043-02-05

Nominal distance (from Earth center)

0.07652

11446700

Maximum Brightness

19.4

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

22.2

mag

Diameter

100 - 210*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2019-01-08

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

1.681399

1-sigma variation

0.000897

Unit

Eccentricity (e)

Value

0.576339

1-sigma variation

0.000308

Unit

Inclination (i)

Value

7.0215

1-sigma variation

0.0047

Unit

Long. of Ascending Node (Ω)

Value

292.7263

1-sigma variation

0.0008

Unit

Arg. of Perihelion (ω)

Value

283.7373

1-sigma variation

0.0001

Unit

Mean Anomaly (M)

Value

16.39992

1-sigma variation

0.89377

Unit

Perihelion distance

Value

0.712343

1-sigma variation

Unit

Aphelion distance

Value

2.650456

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.029906

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.316744

1-sigma variation

Unit

MOID

Value

0.007112

1-sigma variation

Unit

Orbit Period

Value

796.3514

1-sigma variation

Unit

U parameter

Value

7.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	8.05267E-7	2.76120E-7	4.25269E-6	7.33908E-7	-2.52349E-8	-8.02037E-4
e	2.76120E-7	9.46798E-8	1.45823E-6	2.51658E-7	-8.60654E-9	-2.75013E-4
i	4.25269E-6	1.45823E-6	2.24603E-5	3.87692E-6	-1.31104E-7	-4.23564E-3
Ω	7.33908E-7	2.51658E-7	3.87692E-6	6.70654E-7	-2.33548E-8	-7.30965E-4
ω	-2.52349E-8	-8.60654E-9	-1.31104E-7	-2.33548E-8	1.10049E-8	2.51327E-5
M	-8.02037E-4	-2.75013E-4	-4.23564E-3	-7.30965E-4	2.51327E-5	7.98820E-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

22.223

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

100 - 210*

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

2418

Unit

Source

[1]

Normalized RMS of residuals

Value

0.567881

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2019-01-08.35451

Unit

Source

[2]

Last Observation

Value

2019-02-12.1146

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

57 (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 2019AQ9 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	1958-02-10 10:00	> 1 mo	0.0714541	0.0502786	1.4034161
EARTH	1960-07-18 05:20	> 1 w	0.0071291	0.0031178	0.2135554
EARTH	1982-02-01 19:09	> 1 d	0.1166397	0.0520406	0.1081553
EARTH	1984-07-14 05:08	> 1 w	0.0503591	0.0048906	0.1523033
EARTH	2019-02-14 14:40	< 1 min	0.1031415	0.1029712	0.0000568
EARTH	2021-07-26 08:42	868.9	0.1282374	0.0951656	0.0110315
EARTH	2043-02-05 09:58	> 1 d	0.0765165	0.0556119	0.0846643
EARTH	2045-07-17 21:22	> 1 w	0.0138990	0.0078980	0.1039300
EARTH	2056-02-28 13:07	> 1 mo	0.1941695	0.0433551	0.5076176
EARTH	2058-07-29 20:16	> 1 mo	0.1810589	0.0115369	0.7475869
EARTH	2093-01-30 02:18	> 1 mo	0.1778632	0.0564392	3.2303877
EARTH	2095-07-04 23:14	> 1 mo	0.1513565	0.0205940	3.0556840
EARTH	2106-02-10 08:51	> 1 mo	0.0599331	0.0580782	0.9085206
EARTH	2108-07-21 01:20	> 1 mo	0.0203304	0.0116924	3.5956923

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
46.49268761	193.71627468	0.00665380	MINIMUM
314.93869703	36.16226210	0.05479582	MINIMUM
0.71402418	114.50022120	0.31097681	SADDLE
180.27787956	294.79136689	1.66896571	SADDLE
1.47898865	296.01729885	1.70232701	SADDLE
180.53758182	114.93096903	3.65235586	MAXIMUM

Download:

MOID Plots

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