Asteroids

2022SD4 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.975

Aphelion (Q)

1.886

Eccentricity (e)

0.318

Inclination (i)

14.6

deg

Orbit period (P)

624.8

Earth MOID

0.02579

U parameter

7.8

Next Earth close approach

Date

2034-09-16

Nominal distance (from Earth center)

0.17358

25967230

Maximum Brightness

25.3

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.4

mag

Diameter

14 - 30*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2022-09-19

Observatory

Kitt Peak-Bok

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

1.430291

1-sigma variation

0.000917

Unit

Eccentricity (e)

Value

0.318379

1-sigma variation

0.000437

Unit

Inclination (i)

Value

14.5516

1-sigma variation

0.0143

Unit

Long. of Ascending Node (Ω)

Value

182.4924

1-sigma variation

0.0005

Unit

Arg. of Perihelion (ω)

Value

219.8935

1-sigma variation

0.0108

Unit

Mean Anomaly (M)

Value

283.75216

1-sigma variation

0.61057

Unit

Perihelion distance

Value

0.974916

1-sigma variation

Unit

Aphelion distance

Value

1.885667

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.702869

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.029760

1-sigma variation

Unit

MOID

Value

0.025792

1-sigma variation

Unit

Orbit Period

Value

624.7916

1-sigma variation

Unit

U parameter

Value

7.8

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	8.41276E-7	4.00388E-7	1.31137E-5	4.87968E-7	-9.90693E-6	-5.60020E-4
e	4.00388E-7	1.90557E-7	6.24123E-6	2.32238E-7	-4.71464E-6	-2.66530E-4
i	1.31137E-5	6.24123E-6	2.04417E-4	7.60634E-6	-1.54417E-4	-8.72954E-3
Ω	4.87968E-7	2.32238E-7	7.60634E-6	2.83071E-7	-5.74637E-6	-3.24830E-4
ω	-9.90693E-6	-4.71464E-6	-1.54417E-4	-5.74637E-6	1.16818E-4	6.59477E-3
M	-5.60020E-4	-2.66530E-4	-8.72954E-3	-3.24830E-4	6.59477E-3	3.72794E-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

26.373

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

14 - 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

1088

Unit

Source

[1]

Normalized RMS of residuals

Value

0.416074

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2022-09-19.226255

Unit

Source

[2]

Last Observation

Value

2022-09-26.422914

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

30 (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 2022SD4 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	1957-09-20 13:00	> 1 d	0.1019524	0.0179742	0.0596753
EARTH	1998-10-25 09:59	> 1 w	0.1965743	0.0543748	0.0782338
EARTH	2010-10-04 09:30	> 1 w	0.0645623	0.0211849	0.0647990
EARTH	2022-09-27 22:17	< 1 min	0.0273023	0.0272126	0.0000299
EARTH	2034-09-16 05:14	> 1 d	0.1735802	0.0100732	0.0712844
EARTH	2075-10-06 21:51	> 1 w	0.0830441	0.0179211	0.1810034
EARTH	2087-09-26 07:39	> 1 w	0.0430066	0.0256100	0.0797178

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
332.93969389	263.95701052	0.02629969	MINIMUM
184.99031219	122.38107612	0.90739466	SADDLE
0.28324105	120.47391226	1.97628410	SADDLE
176.87857839	296.56278303	2.86984191	MAXIMUM

Download:

MOID Plots

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