Asteroids

2022SY4 help

Last update: 2025-02-19 13:28 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.825

Aphelion (Q)

2.404

Eccentricity (e)

0.489

Inclination (i)

0.4

deg

Orbit period (P)

749.2

Earth MOID

0.00493

U parameter

7.6

Next Earth close approach

Date

2027-01-30

Nominal distance (from Earth center)

0.05009

7492806

Maximum Brightness

23.7

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

27.5

mag

Diameter

8 - 18*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2022-09-20

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

1.614355

1-sigma variation

0.000992

Unit

Eccentricity (e)

Value

0.489059

1-sigma variation

0.000370

Unit

Inclination (i)

Value

0.3516

1-sigma variation

0.0001

Unit

Long. of Ascending Node (Ω)

Value

56.9215

1-sigma variation

0.0388

Unit

Arg. of Perihelion (ω)

Value

9.3404

1-sigma variation

0.0397

Unit

Mean Anomaly (M)

Value

75.43233

1-sigma variation

0.40365

Unit

Perihelion distance

Value

0.824840

1-sigma variation

Unit

Aphelion distance

Value

2.403869

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.159585

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

1.359064

1-sigma variation

Unit

MOID

Value

0.004933

1-sigma variation

Unit

Orbit Period

Value

749.1983

1-sigma variation

Unit

U parameter

Value

7.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	9.84778E-7	3.67068E-7	6.56838E-8	3.83348E-5	-3.92194E-5	-4.00570E-4
e	3.67068E-7	1.36822E-7	2.44861E-8	1.42882E-5	-1.46179E-5	-1.49309E-4
i	6.56838E-8	2.44861E-8	4.53871E-9	2.51550E-6	-2.57379E-6	-2.67178E-5
Ω	3.83348E-5	1.42882E-5	2.51550E-6	1.50318E-3	-1.53780E-3	-1.55931E-2
ω	-3.92194E-5	-1.46179E-5	-2.57379E-6	-1.53780E-3	1.57323E-3	1.59529E-2
M	-4.00570E-4	-1.49309E-4	-2.67178E-5	-1.55931E-2	1.59529E-2	1.62937E-1

Date of computation: 2025-02-19 13:28 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

27.547

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

8 - 18*

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

956

Unit

Source

[1]

Normalized RMS of residuals

Value

0.628769

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2022-09-17.33754

Unit

Source

[2]

Last Observation

Value

2022-09-26.053965

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

24 (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 2022SY4 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
MARS	1958-06-19 09:18	> 1 w	0.0392100	0.0375346	0.0896229
EARTH	1962-09-30 11:44	> 1 mo	0.0323512	0.0050553	0.6192895
EARTH	1965-01-07 02:04	> 1 mo	0.0984876	0.0049521	0.5001247
MARS	1965-04-18 07:40	> 1 w	0.0389159	0.0284626	0.3361211
EARTH	1991-09-22 20:47	> 1 w	0.0456429	0.0049919	0.1334126
EARTH	1993-12-12 16:47	> 1 mo	0.1510436	0.0443608	0.0359071
MARS	2020-07-13 02:17	586.1	0.0418347	0.0377032	0.0046108
EARTH	2022-09-26 19:20	< 1 s	0.0061504	0.0061372	0.0000044
EARTH	2024-12-01 09:15	> 1 d	0.1610392	0.1586138	0.0008093
EARTH	2027-01-30 21:58	> 1 d	0.0500863	0.0057052	0.0234951
MARS	2049-12-07 03:36	> 1 d	0.0397649	0.0278487	0.0217420
EARTH	2059-09-16 11:48	> 1 d	0.1430525	0.0054609	0.0469390
EARTH	2061-11-02 07:51	> 1 w	0.1412664	0.0874972	0.0179485
EARTH	2064-01-17 17:31	> 1 d	0.0656931	0.0057047	0.0356844
MARS	2095-01-30 08:43	> 1 d	0.0355143	0.0277971	0.0534733
EARTH	2100-10-03 08:20	> 1 w	0.0399121	0.0047186	0.1243441
EARTH	2102-12-16 17:55	> 1 w	0.1505165	0.0903343	0.0201236
EARTH	2105-02-05 17:20	> 1 d	0.1147075	0.0889074	0.0086037

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
320.90825590	262.94716484	0.00490709	MINIMUM
37.01087325	23.50977289	0.00568834	MINIMUM
358.75202145	322.99191974	0.16097581	SADDLE
179.56879819	143.92609383	1.39066839	SADDLE
358.71327516	142.94587181	1.83825363	SADDLE
179.57998628	323.93928929	3.38989955	MAXIMUM

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MOID Plots

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