Asteroids

2022SX55 help

Last update: 2024-04-26 12:37 UTC

Orbital Properties

Epoch

60400.0

MJD

Orbit type

Aten

Perihelion (q)

0.503

Aphelion (Q)

1.169

Eccentricity (e)

0.398

Inclination (i)

10.9

deg

Orbit period (P)

279.3

Earth MOID

0.00062

U parameter

7.0

Next Earth close approach

Date

2029-12-13

Nominal distance (from Earth center)

0.18738

28031448

Maximum Brightness

29.7

mag

Risk

Object is in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

30.2

mag

Diameter

2.4 - 5*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2022-09-18

Observatory

Pan-STARRS 1, Haleakala

Orbit Visualiser

Click the button to start Orbit Visualiser

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

60400.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.836254

1-sigma variation

0.000080

Unit

Eccentricity (e)

Value

0.398441

1-sigma variation

0.001210

Unit

Inclination (i)

Value

10.9185

1-sigma variation

0.0457

Unit

Long. of Ascending Node (Ω)

Value

354.4050

1-sigma variation

0.0014

Unit

Arg. of Perihelion (ω)

Value

221.0135

1-sigma variation

0.0101

Unit

Mean Anomaly (M)

Value

103.21286

1-sigma variation

0.05962

Unit

Perihelion distance

Value

0.503056

1-sigma variation

Unit

Aphelion distance

Value

1.169451

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.001424

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.453422

1-sigma variation

Unit

MOID

Value

0.000619

1-sigma variation

Unit

Orbit Period

Value

279.3222

1-sigma variation

Unit

U parameter

Value

7.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.40902E-9	-9.68593E-8	-3.65955E-6	-1.07140E-7	-8.08471E-7	4.77060E-6
e	-9.68593E-8	1.46389E-6	5.53061E-5	1.62138E-6	1.22202E-5	-7.21103E-5
i	-3.65955E-6	5.53061E-5	2.08969E-3	6.10861E-5	4.61597E-4	-2.72377E-3
Ω	-1.07140E-7	1.62138E-6	6.10861E-5	1.93108E-6	1.36027E-5	-8.03327E-5
ω	-8.08471E-7	1.22202E-5	4.61597E-4	1.36027E-5	1.02049E-4	-6.02222E-4
M	4.77060E-6	-7.21103E-5	-2.72377E-3	-8.03327E-5	-6.02222E-4	3.55396E-3

Date of computation: 2024-04-23 10:08 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

30.183

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

2.4 - 5*

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 ODIM	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

0.9

Unit

Source

[1]

Unobserved

Value

585

Unit

Source

[1]

Normalized RMS of residuals

Value

0.32991

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2022-09-18.338153

Unit

Source

[2]

Last Observation

Value

2022-09-19.267164

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

7 (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

[3]

Last Observation

Value

Unit

Source

[3]

Delay (Discarded)

Value

0 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

0 (0)

Unit

Source

[1]

Note: The ASCII file is in a format suitable for Orbfit input.

Sources

No.	Name	Additional
[1]	ESA ODIM	ESA orbit determination and impact monitoring system
[2]	MPC	Minor Planet Center: https://www.minorplanetcenter.net
[3]	JPL Radar Observations	Jet Propulsion Laboratory: https://ssd.jpl.nasa.gov/dat/radar_data_ast.txt

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 2022SX55 from 1950 to 2124

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possibile distance in au	Distance uncert. in au
EARTH	1952-12-21 10:11	> 1 d	0.1542988	0.1507907	0.0428098
EARTH	1956-12-18 17:52	> 1 d	0.1957156	0.1504797	0.1093521
EARTH	1959-09-22 00:49	> 1 d	0.1978794	0.0034390	0.1348969
EARTH	1963-09-19 10:52	> 1 d	0.1136555	0.0027608	0.0767983
EARTH	1967-09-17 20:57	218.2	0.0306142	0.0077512	0.0076757
EARTH	1971-09-17 22:49	> 1 d	0.0295831	0.0016752	0.0662487
EARTH	1975-09-22 04:18	> 1 w	0.1082349	0.0092128	0.0725418
EARTH	1979-10-03 11:05	> 1 w	0.1745508	0.0427708	0.0576383
EARTH	1999-12-12 12:45	> 1 w	0.1954314	0.1514829	0.0263465
VENUS	2002-09-08 03:00	> 1 d	0.0420151	0.0411090	0.0088929
EARTH	2003-12-22 17:11	719.2	0.1553112	0.1499835	0.0091925
EARTH	2007-12-21 16:25	975.5	0.1631875	0.1528675	0.0104484
VENUS	2012-11-03 22:36	> 1 d	0.0470363	0.0387684	0.0139062
EARTH	2014-09-20 16:15	597.3	0.1590862	0.1170946	0.0139974
EARTH	2018-09-18 09:45	245.4	0.0728586	0.0487438	0.0080385
EARTH	2022-09-17 13:33	2.2	0.0003719	0.0003703	0.0000005
EARTH	2029-12-13 23:40	9.8	0.1873787	0.1844688	0.0010127
EARTH	2035-09-17 19:58	61.5	0.0014822	0.0000164	0.0103607
EARTH	2053-09-17 14:24	> 1 mo	0.0247333	0.0000887	14.2119463
EARTH	2060-09-20 05:11	> 1 mo	0.1671724	0.0017149	12.2575774
EARTH	2071-09-27 12:38	> 1 mo	0.1433467	0.0240984	40.7030016
EARTH	2075-12-20 04:06	> 1 mo	0.1864711	0.1863634	2.1913539
EARTH	2078-09-17 18:04	> 1 mo	0.0231113	0.0007526	76.9957601
EARTH	2089-10-07 16:25	> 1 mo	0.1908070	0.0703422	114.9035109
EARTH	2093-12-19 09:38	> 1 mo	0.1914671	0.1861393	76.9893821
EARTH	2096-09-17 05:43	> 1 mo	0.0126600	0.0010979	367.3450727
EARTH	2107-09-20 04:39	> 1 mo	0.0606712	0.0004443	4079.9609593
EARTH	2118-10-01 04:38	> 1 mo	0.1598328	0.0354001	4643.5309778
EARTH	2122-12-20 15:36	> 1 mo	0.1968231	0.1859189	2878.2098439

Download as:

2022SX55

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE/σ	IP	Exp. energy	PS
2035-09-17.831	64587.831	-0.145	0.40 ± 0.007	2.41E2	4.22E-3	4.94E-6	-4.27
2037-09-17.286	65318.286	-0.167	0.26 ± 0.006	1.17E6	9.03E-7	1.06E-9	-8.00
2038-09-17.568	65683.568	-0.310	0.99 ± 0.006	4.40E4	1.63E-5	1.91E-8	-6.77
2040-09-17.060	66414.060	-0.159	0.03 ± 0.000	2.20E8	4.88E-9	5.73E-12	-10.36
2043-09-17.820	67509.820	-0.158	0.94 ± 0.000	1.16E7	6.74E-8	7.91E-11	-9.29
2045-09-17.265	68240.265	-0.125	0.72 ± 0.000	1.59E7	6.20E-8	7.27E-11	-9.37


Based on 7 optical observations (of which 0 are rejected as outliers) from 2022/09/18.338 to 2022/09/19.267.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.36 and 1.36 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
AstOD software version= 4.0, Date of computation=20240110 090433.072 UTC.

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