Asteroids

2022SF4 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.446

Aphelion (Q)

1.117

Eccentricity (e)

0.429

Inclination (i)

13.9

deg

Orbit period (P)

252.3

Earth MOID

0.00880

U parameter

6.8

Next Earth close approach

Date

2031-09-25

Nominal distance (from Earth center)

0.10657

15941948

Maximum Brightness

23.9

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.9

mag

Diameter

11 - 25*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2022-09-20

Observatory

Pan-STARRS 1, 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

0.781349

1-sigma variation

0.000046

Unit

Eccentricity (e)

Value

0.429070

1-sigma variation

0.000230

Unit

Inclination (i)

Value

13.9076

1-sigma variation

0.0120

Unit

Long. of Ascending Node (Ω)

Value

355.3500

1-sigma variation

0.0002

Unit

Arg. of Perihelion (ω)

Value

208.8851

1-sigma variation

0.0018

Unit

Mean Anomaly (M)

Value

332.57959

1-sigma variation

0.12010

Unit

Perihelion distance

Value

0.446096

1-sigma variation

Unit

Aphelion distance

Value

1.116603

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.015790

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.532411

1-sigma variation

Unit

MOID

Value

0.008801

1-sigma variation

Unit

Orbit Period

Value

252.2704

1-sigma variation

Unit

U parameter

Value

6.8

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.14490E-9	-1.06584E-8	-5.56716E-7	7.81872E-9	-8.21714E-8	-5.56192E-6
e	-1.06584E-8	5.29828E-8	2.76652E-6	-3.88095E-8	4.09716E-7	2.76334E-5
i	-5.56716E-7	2.76652E-6	1.44521E-4	-2.03020E-6	2.13283E-5	1.44360E-3
Ω	7.81872E-9	-3.88095E-8	-2.03020E-6	2.86686E-8	-2.96082E-7	-2.02858E-5
ω	-8.21714E-8	4.09716E-7	2.13283E-5	-2.96082E-7	3.24954E-6	2.12737E-4
M	-5.56192E-6	2.76334E-5	1.44360E-3	-2.02858E-5	2.12737E-4	1.44237E-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

26.906

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

[-]

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

1095

Unit

Source

[1]

Normalized RMS of residuals

Value

0.731853

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2022-09-19.323401

Unit

Source

[2]

Last Observation

Value

2022-09-21.82476

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

22 (1)

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 2022SF4 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	1955-10-03 02:58	> 1 d	0.1435037	0.1109834	0.0112957
EARTH	1964-10-17 14:53	> 1 d	0.1838505	0.1735529	0.0037273
EARTH	1966-09-16 09:09	243.3	0.1060255	0.0671903	0.0130054
EARTH	1973-11-01 21:09	> 1 d	0.1994726	0.1978469	0.0006794
EARTH	1975-09-16 14:56	157.4	0.0174657	0.0102257	0.0048986
EARTH	1984-09-16 19:14	544.6	0.0199652	0.0101439	0.0082859
EARTH	1993-09-23 16:58	> 1 d	0.0977819	0.0747923	0.0077552
EARTH	2002-10-07 23:13	> 1 d	0.1608861	0.1500257	0.0037105
EARTH	2004-09-17 08:26	284.8	0.1723629	0.1475412	0.0082797
EARTH	2011-10-24 02:58	1351.9	0.1923408	0.1899277	0.0008763
EARTH	2013-09-15 23:08	40.7	0.0713164	0.0576226	0.0045786
EARTH	2022-09-16 22:02	< 1 min	0.0097769	0.0097572	0.0000066
EARTH	2031-09-25 13:58	695.3	0.1065653	0.0973276	0.0030909
EARTH	2040-10-13 20:50	> 1 d	0.1775222	0.1697798	0.0026656
EARTH	2042-09-16 21:51	205.4	0.1224036	0.0964825	0.0086540
EARTH	2051-09-17 04:50	374.6	0.0088327	0.0086144	0.0021164
EARTH	2060-09-28 00:17	> 1 w	0.1243236	0.0429607	0.1082563
EARTH	2069-10-22 04:54	> 1 mo	0.1917676	0.1774339	0.0639353
EARTH	2071-09-16 14:42	> 1 d	0.0656036	0.0099315	0.3306947
EARTH	2080-09-19 19:01	> 1 w	0.0637446	0.0128396	0.2701553
EARTH	2089-10-08 13:00	> 1 mo	0.1639958	0.1017521	0.1136906
EARTH	2091-09-17 23:44	> 1 d	0.1540918	0.0131082	0.2512896
EARTH	2100-09-17 15:12	> 1 d	0.0083746	0.0076057	0.0571513
EARTH	2109-10-08 13:31	> 1 mo	0.1611216	0.0962047	0.8426145
EARTH	2111-09-18 21:24	> 1 mo	0.1479162	0.0124408	2.3453133
EARTH	2120-09-20 16:37	> 1 mo	0.0609715	0.0113839	3.0894469

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
133.01582189	252.22170430	0.00930491	MINIMUM
10.76334213	116.21114247	0.56749590	SADDLE
6.52807253	289.50680559	1.43880709	SADDLE
180.28656156	102.29768231	2.11621198	MAXIMUM

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MOID Plots

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