Asteroids

2022AA help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.962

Aphelion (Q)

1.619

Eccentricity (e)

0.255

Inclination (i)

1.9

deg

Orbit period (P)

535.3

Earth MOID

0.00227

U parameter

5.1

Next Earth close approach

Date

2044-01-16

Nominal distance (from Earth center)

0.05499

8226749

Maximum Brightness

20.7

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

24.6

mag

Diameter

30 - 70*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2022-01-01

Observatory

Purple Mountain Observatory, XuYi Station

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

1.290290

1-sigma variation

0.000013

Unit

Eccentricity (e)

Value

0.254624

1-sigma variation

0.000008

Unit

Inclination (i)

Value

1.9252

1-sigma variation

0.0001

Unit

Long. of Ascending Node (Ω)

Value

123.3671

1-sigma variation

2.045E-5

Unit

Arg. of Perihelion (ω)

Value

32.1201

1-sigma variation

0.0002

Unit

Mean Anomaly (M)

Value

199.49981

1-sigma variation

0.01446

Unit

Perihelion distance

Value

0.961752

1-sigma variation

Unit

Aphelion distance

Value

1.618829

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.007961

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.521202

1-sigma variation

Unit

MOID

Value

0.002271

1-sigma variation

Unit

Orbit Period

Value

535.3400

1-sigma variation

Unit

U parameter

Value

5.1

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.77082E-10	1.11603E-10	8.28787E-10	-9.05776E-11	2.37261E-9	-1.92355E-7
e	1.11603E-10	7.03367E-11	5.22385E-10	-5.71899E-11	1.49627E-9	-1.21229E-7
i	8.28787E-10	5.22385E-10	3.89342E-9	-4.55031E-10	1.11780E-8	-9.00294E-7
Ω	-9.05776E-11	-5.71899E-11	-4.55031E-10	4.18275E-10	-1.66821E-9	9.84414E-8
ω	2.37261E-9	1.49627E-9	1.11780E-8	-1.66821E-9	3.29198E-8	-2.57765E-6
M	-1.92355E-7	-1.21229E-7	-9.00294E-7	9.84414E-8	-2.57765E-6	2.08946E-4

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

24.566

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

30 - 70*

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

144

Unit

Source

[1]

Unobserved

Value

1286

Unit

Source

[1]

Normalized RMS of residuals

Value

0.452502

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2022-01-01.564636

Unit

Source

[2]

Last Observation

Value

2022-05-25.326672

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

121 (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

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 2022AA 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	1955-04-08 08:20	1328.9	0.0399990	0.0345517	0.0022678
EARTH	1971-03-11 16:03	> 1 d	0.0360589	0.0356322	0.0002236
EARTH	1987-02-12 00:47	596.6	0.0256472	0.0244513	0.0003987
EARTH	2003-04-15 10:54	294.0	0.0738522	0.0692718	0.0015397
EARTH	2022-02-04 21:16	< 1 min	0.0169953	0.0169937	0.0000005
EARTH	2044-01-16 16:54	350.4	0.0549924	0.0491774	0.0019384
EARTH	2063-02-02 19:07	> 1 d	0.0131207	0.0018811	0.0058906
EARTH	2088-03-29 02:57	> 1 mo	0.0295787	0.0295001	0.0270942
EARTH	2091-01-05 04:41	> 1 mo	0.1832255	0.0021759	1.3442988
EARTH	2116-03-20 15:29	> 1 mo	0.0317659	0.0303002	1.0748038

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
337.98262910	24.53667668	0.00237388	MINIMUM
25.28191851	84.75427861	0.03065635	MINIMUM
7.76644606	62.45113262	0.03531490	SADDLE
182.00809996	235.26804672	0.60989622	SADDLE
3.17062667	236.53390997	1.97107163	SADDLE
181.74023571	55.05146263	2.60909633	MAXIMUM

Download:

MOID Plots

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