Asteroids

2022AT2 help

Last update: 2025-04-09 07:59 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.964

Aphelion (Q)

1.941

Eccentricity (e)

0.337

Inclination (i)

6.2

deg

Orbit period (P)

639.4

Earth MOID

0.00073

U parameter

4.7

Next Earth close approach

Date

2029-01-19

Nominal distance (from Earth center)

0.0176

2632619

Maximum Brightness

22.7

mag

Risk

Object is in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

26.9

mag

Diameter

11 - 25*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2022-01-07

Observatory

Pan-STARRS 2, 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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.452519

1-sigma variation

0.000011

Unit

Eccentricity (e)

Value

0.336511

1-sigma variation

0.000005

Unit

Inclination (i)

Value

6.1548

1-sigma variation

0.0001

Unit

Long. of Ascending Node (Ω)

Value

113.6156

1-sigma variation

2.148E-6

Unit

Arg. of Perihelion (ω)

Value

22.6800

1-sigma variation

4.218E-5

Unit

Mean Anomaly (M)

Value

308.54990

1-sigma variation

0.00733

Unit

Perihelion distance

Value

0.963730

1-sigma variation

Unit

Aphelion distance

Value

1.941308

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.001010

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.851811

1-sigma variation

Unit

MOID

Value

0.000731

1-sigma variation

Unit

Orbit Period

Value

639.4126

1-sigma variation

Unit

U parameter

Value

4.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.12127E-10	5.33865E-11	8.27765E-10	7.92136E-12	4.39491E-10	-7.75878E-8
e	5.33865E-11	2.54186E-11	3.94126E-10	3.77100E-12	2.09315E-10	-3.69414E-8
i	8.27765E-10	3.94126E-10	6.11792E-9	5.78059E-11	3.25116E-9	-5.72784E-7
Ω	7.92136E-12	3.77100E-12	5.78059E-11	4.61416E-12	2.65330E-11	-5.48104E-9
ω	4.39491E-10	2.09315E-10	3.25116E-9	2.65330E-11	1.77917E-9	-3.04135E-7
M	-7.75878E-8	-3.69414E-8	-5.72784E-7	-5.48104E-9	-3.04135E-7	5.36877E-5

Date of computation: 2025-04-09 07:59 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

26.901

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

11 - 25*

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

Unit

Source

[1]

Unobserved

Value

1209

Unit

Source

[1]

Normalized RMS of residuals

Value

0.732396

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2022-01-07.260124

Unit

Source

[2]

Last Observation

Value

2022-03-10.361175

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

49 (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 2022AT2 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	1955-03-10 18:51	> 1 d	0.1042958	0.0826572	0.0097813
EARTH	1967-01-20 14:52	618.7	0.0204041	0.0169519	0.0011545
EARTH	1979-03-04 16:48	539.7	0.0911269	0.0887809	0.0008011
EARTH	2009-12-22 22:52	76.7	0.1681898	0.1656488	0.0008471
EARTH	2022-01-15 09:07	< 1 s	0.0048642	0.0048640	0.0000001
EARTH	2029-01-19 09:04	187.5	0.0175980	0.0165389	0.0003532
EARTH	2036-03-18 20:59	544.7	0.1412708	0.1329875	0.0028149
EARTH	2073-01-16 10:27	> 1 d	0.0087958	0.0001441	0.0134825
EARTH	2089-01-09 01:34	> 1 mo	0.0192326	0.0005087	1.4089024
EARTH	2119-03-11 18:23	> 1 mo	0.1021332	0.0766627	34.7716660

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
343.92315765	11.58182256	0.00016427	MINIMUM
181.57067416	215.72252146	0.92960196	SADDLE
2.07564481	216.64411970	1.97700709	SADDLE
180.56743467	35.00509070	2.92630960	MAXIMUM

Download:

MOID Plots

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

Level lines of the squared distance function

2022AT2

Date in UTC	MJD	σ	σ_imp	Distance ± Width in RE	Stretching in RE/σ	IP	Exp. energy	PS	TS
2080-01-14.357	80777.357	2.455	0.000	1.33 ± 0.000	1.08E2	7.22E-4	5.00E-5	-4.29	0


Based on 49 optical observations (of which 0 are rejected as outliers) from 2022/01/07.260 to 2022/03/10.361.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 2.00 and 2.00 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
AstOD software version= 4.0, Date of computation=20250305 084946.376 UTC.

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Download Impactor Table as: