Asteroids

2022AL help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.997

Aphelion (Q)

1.474

Eccentricity (e)

0.193

Inclination (i)

6.2

deg

Orbit period (P)

501.6

Earth MOID

0.01491

U parameter

7.0

Next Earth close approach

Date

2032-12-16

Nominal distance (from Earth center)

0.08852

13241935

Maximum Brightness

24.5

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

27.1

mag

Diameter

10 - 23*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2022-01-04

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

1.235530

1-sigma variation

0.000217

Unit

Eccentricity (e)

Value

0.192656

1-sigma variation

0.000135

Unit

Inclination (i)

Value

6.2134

1-sigma variation

0.0039

Unit

Long. of Ascending Node (Ω)

Value

286.6053

1-sigma variation

0.0006

Unit

Arg. of Perihelion (ω)

Value

173.0162

1-sigma variation

0.0011

Unit

Mean Anomaly (M)

Value

299.75281

1-sigma variation

0.26840

Unit

Perihelion distance

Value

0.997498

1-sigma variation

Unit

Aphelion distance

Value

1.473562

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.452853

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.015089

1-sigma variation

Unit

MOID

Value

0.014908

1-sigma variation

Unit

Orbit Period

Value

501.6243

1-sigma variation

Unit

U parameter

Value

7.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.70273E-8	2.91842E-8	8.36605E-7	1.22423E-7	-1.85361E-7	-5.82047E-5
e	2.91842E-8	1.81114E-8	5.19121E-7	7.59639E-8	-1.15299E-7	-3.61206E-5
i	8.36605E-7	5.19121E-7	1.49034E-5	2.18104E-6	-3.21042E-6	-1.03551E-3
Ω	1.22423E-7	7.59639E-8	2.18104E-6	3.19213E-7	-4.68837E-7	-1.51530E-4
ω	-1.85361E-7	-1.15299E-7	-3.21042E-6	-4.68837E-7	1.13349E-6	2.29150E-4
M	-5.82047E-5	-3.61206E-5	-1.03551E-3	-1.51530E-4	2.29150E-4	7.20391E-2

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

27.107

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

10 - 23*

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

1349

Unit

Source

[1]

Normalized RMS of residuals

Value

0.657707

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2022-01-04.391566

Unit

Source

[2]

Last Observation

Value

2022-01-08.40978

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

34 (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 2022AL 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	1952-12-04 17:04	> 1 d	0.1473463	0.0369175	0.0798947
EARTH	1964-01-28 21:40	> 1 d	0.1420250	0.0138628	0.0767281
EARTH	1981-12-23 00:56	> 1 d	0.0587960	0.0272791	0.0105058
EARTH	1993-01-24 16:57	> 1 d	0.1107245	0.0080734	0.0372101
EARTH	2022-01-03 12:44	< 1 min	0.0187593	0.0187219	0.0000125
EARTH	2032-12-16 04:21	> 1 d	0.0885169	0.0389243	0.0168171
MARS	2039-02-08 03:54	> 1 d	0.0176092	0.0175505	0.0007254
EARTH	2070-01-15 17:29	> 1 d	0.0485986	0.0067951	0.0200563
EARTH	2081-01-22 03:36	> 1 w	0.0875403	0.0037027	0.0640849
EARTH	2120-12-18 09:16	> 1 d	0.0857533	0.0272884	0.0197924

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
4.83943817	3.21685414	0.01494026	MINIMUM
178.73495709	176.34754664	0.45760320	SADDLE
359.51034912	176.88371364	2.01384400	SADDLE
180.02312996	357.41425428	2.45716529	MAXIMUM

Download:

MOID Plots

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