Asteroids

2022SJ28 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.993

Aphelion (Q)

3.956

Eccentricity (e)

0.599

Inclination (i)

1.3

deg

Orbit period (P)

1421.7

Earth MOID

0.00743

U parameter

8.1

Next Earth close approach

Date

2053-12-10

Nominal distance (from Earth center)

0.13337

19951808

Maximum Brightness

24.2

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

26.3

mag

Diameter

15 - 30*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2022-09-28

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

2.474450

1-sigma variation

0.006721

Unit

Eccentricity (e)

Value

0.598895

1-sigma variation

0.001081

Unit

Inclination (i)

Value

1.2952

1-sigma variation

0.0017

Unit

Long. of Ascending Node (Ω)

Value

190.7735

1-sigma variation

0.0017

Unit

Arg. of Perihelion (ω)

Value

207.9129

1-sigma variation

0.0006

Unit

Mean Anomaly (M)

Value

284.09096

1-sigma variation

1.15431

Unit

Perihelion distance

Value

0.992514

1-sigma variation

Unit

Aphelion distance

Value

3.956387

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

2.372042

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.036881

1-sigma variation

Unit

MOID

Value

0.007434

1-sigma variation

Unit

Orbit Period

Value

1421.7279

1-sigma variation

Unit

U parameter

Value

8.1

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.51684E-5	7.26504E-6	1.12227E-5	1.12061E-5	-4.21881E-6	-7.75783E-3
e	7.26504E-6	1.16853E-6	1.80510E-6	1.80243E-6	-6.78567E-7	-1.24780E-3
i	1.12227E-5	1.80510E-6	2.78845E-6	2.78438E-6	-1.04828E-6	-1.92754E-3
Ω	1.12061E-5	1.80243E-6	2.78438E-6	2.78219E-6	-1.04824E-6	-1.92469E-3
ω	-4.21881E-6	-6.78567E-7	-1.04828E-6	-1.04824E-6	3.96158E-7	7.24595E-4
M	-7.75783E-3	-1.24780E-3	-1.92754E-3	-1.92469E-3	7.24595E-4	1.33243E0

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

26.271

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

15 - 30*

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

1055

Unit

Source

[1]

Normalized RMS of residuals

Value

0.457056

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2022-09-24.346784

Unit

Source

[2]

Last Observation

Value

2022-10-25.450564

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

31 (2)

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 2022SJ28 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	1951-11-09 04:48	> 1 mo	0.0873185	0.0010840	1.0268220
EARTH	1955-10-30 03:48	> 1 mo	0.0739766	0.0616587	0.0726437
EARTH	1959-10-17 01:17	> 1 mo	0.0761926	0.0189559	0.5095214
EARTH	2022-10-05 12:40	< 1 min	0.0381395	0.0379596	0.0000600
EARTH	2053-12-10 11:50	> 1 mo	0.1333696	0.0185504	0.6990758
EARTH	2123-09-26 08:23	> 1 mo	0.1093664	0.0024544	0.7589677

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
354.94943525	287.27488743	0.00745973	MINIMUM
358.85764790	115.02839878	1.99919383	SADDLE
179.71953353	116.09436710	2.94960325	SADDLE
179.71491373	296.09510759	4.94922097	MAXIMUM

Download:

MOID Plots

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

Level lines of the squared distance function

2022SJ28

Date in UTC	MJD	σ	σ_imp	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS	TS
2104-10-05.698	89807.698	3.197	0.000	1.00 ± 0.000	9.25E5	6.14E-9	2.23E-1	-9.10	0
2116-10-04.898	94189.898	2.887	0.000	0.47 ± 0.003	6.38E4	2.93E-7	2.24E-1	-7.48	0


Based on 31 optical observations (of which 2 are rejected as outliers) from 2022/09/24.347 to 2022/10/25.451.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.54 and 1.54 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 4.0, Date of computation=20250805 130500.123 UTC.

Download this part as:

Download Impactor Table as: