Asteroids

2024WH18 help

Last update: 2025-01-21 21:01 UTC

Orbital Properties

Epoch

60600.0

MJD

Orbit type

Apollo

Perihelion (q)

0.806

Aphelion (Q)

3.813

Eccentricity (e)

0.651

Inclination (i)

9.4

deg

Orbit period (P)

1282.0

Earth MOID

0.00100

U parameter

7.3

Next Earth close approach

Date

2031-11-24

Nominal distance (from Earth center)

0.14094

21084446

Maximum Brightness

mag

Risk

Object is not in risk list

Object is in priority list

Physical Properties

Absolute Magnitude (H)

22.5

mag

Diameter

80 - 190*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2024-11-29

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

60600.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

2.309535

1-sigma variation

0.001589

Unit

Eccentricity (e)

Value

0.650970

1-sigma variation

0.000264

Unit

Inclination (i)

Value

9.4270

1-sigma variation

0.0047

Unit

Long. of Ascending Node (Ω)

Value

118.6413

1-sigma variation

0.0071

Unit

Arg. of Perihelion (ω)

Value

241.8088

1-sigma variation

0.0056

Unit

Mean Anomaly (M)

Value

2.13019

1-sigma variation

0.00304

Unit

Perihelion distance

Value

0.806098

1-sigma variation

Unit

Aphelion distance

Value

3.812972

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.938185

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.002829

1-sigma variation

Unit

MOID

Value

0.000996

1-sigma variation

Unit

Orbit Period

Value

1281.9919

1-sigma variation

Unit

U parameter

Value

7.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.52374E-6	4.20013E-7	7.46027E-6	-1.12049E-5	8.82342E-6	-4.82870E-6
e	4.20013E-7	6.99007E-8	1.24158E-6	-1.86478E-6	1.46840E-6	-8.03612E-7
i	7.46027E-6	1.24158E-6	2.20692E-5	-3.31685E-5	2.61173E-5	-1.42696E-5
Ω	-1.12049E-5	-1.86478E-6	-3.31685E-5	4.98850E-5	-3.92824E-5	2.14273E-5
ω	8.82342E-6	1.46840E-6	2.61173E-5	-3.92824E-5	3.09454E-5	-1.68746E-5
M	-4.82870E-6	-8.03612E-7	-1.42696E-5	2.14273E-5	-1.68746E-5	9.24002E-6

Date of computation: 2025-01-01 11:58 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

22.497

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

80 - 190*

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

Unit

Source

[1]

Normalized RMS of residuals

Value

0.466924

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2024-11-29.462578

Unit

Source

[2]

Last Observation

Value

2025-01-01.39366

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

33 (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 2024WH18 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	1954-11-30 07:18	> 1 mo	0.1943911	0.1493273	4.6256428
EARTH	1961-11-17 12:15	> 1 mo	0.1552465	0.1468461	1.9608586
EARTH	1989-08-11 12:01	> 1 mo	0.1446237	0.0245155	1.2938335
EARTH	1996-07-22 13:05	> 1 w	0.0131575	0.0028852	0.1105443
EARTH	2003-08-01 05:01	> 1 w	0.0893228	0.0078819	0.1104149
EARTH	2024-11-15 01:49	< 1 min	0.1588667	0.1586672	0.0000665
EARTH	2031-11-24 18:19	> 1 d	0.1409408	0.1401605	0.0046779
EARTH	2105-07-11 23:20	> 1 w	0.1696866	0.0087606	0.1743701
EARTH	2112-07-31 13:20	> 1 w	0.0833031	0.0089659	0.0999964
EARTH	2119-08-26 08:57	446.8	0.1939818	0.1915239	0.0008197

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
329.39167721	192.97597405	0.00099590	MINIMUM
29.85315792	315.51108709	0.13984439	MINIMUM
2.10676086	259.75430517	0.23731257	SADDLE
359.11585471	73.15729841	1.79574705	SADDLE
179.98997128	73.71401994	2.83271646	SADDLE
179.56152971	253.51352310	4.80823296	MAXIMUM

Download:

MOID Plots

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