Asteroids

2024GW4 help

Last update: 2024-05-03 07:31 UTC

Orbital Properties

Epoch

60400.0

MJD

Orbit type

Apollo

Perihelion (q)

0.922

Aphelion (Q)

3.328

Eccentricity (e)

0.566

Inclination (i)

10.7

deg

Orbit period (P)

1131.2

Earth MOID

0.00110

U parameter

7.8

Next Earth close approach

Date

2049-04-27

Nominal distance (from Earth center)

0.19213

28741866

Maximum Brightness

27.9

mag

Risk

Object is in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

28.8

mag

Diameter

5 - 10*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2024-04-11

Observatory

Mt. Lemmon Survey

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

2.124741

1-sigma variation

0.002874

Unit

Eccentricity (e)

Value

0.566242

1-sigma variation

0.000605

Unit

Inclination (i)

Value

10.6867

1-sigma variation

0.0092

Unit

Long. of Ascending Node (Ω)

Value

199.7062

1-sigma variation

0.0005

Unit

Arg. of Perihelion (ω)

Value

320.7606

1-sigma variation

0.0044

Unit

Mean Anomaly (M)

Value

6.50430

1-sigma variation

0.01648

Unit

Perihelion distance

Value

0.921624

1-sigma variation

Unit

Aphelion distance

Value

3.327859

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.001759

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

1.573724

1-sigma variation

Unit

MOID

Value

0.001099

1-sigma variation

Unit

Orbit Period

Value

1131.2473

1-sigma variation

Unit

U parameter

Value

7.8

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	8.26235E-6	1.73811E-6	2.63290E-5	1.02349E-6	1.21101E-5	-4.73571E-5
e	1.73811E-6	3.65643E-7	5.53834E-6	2.16228E-7	2.54484E-6	-9.96205E-6
i	2.63290E-5	5.53834E-6	8.39226E-5	3.20579E-6	3.87548E-5	-1.50923E-4
Ω	1.02349E-6	2.16228E-7	3.20579E-6	2.75716E-7	1.06799E-6	-5.83116E-6
ω	1.21101E-5	2.54484E-6	3.87548E-5	1.06799E-6	1.90159E-5	-6.95156E-5
M	-4.73571E-5	-9.96205E-6	-1.50923E-4	-5.83116E-6	-6.95156E-5	2.71444E-4

Date of computation: 2024-04-23 11:53 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

28.806

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

5 - 10*

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

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.486404

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2024-04-11.415883

Unit

Source

[2]

Last Observation

Value

2024-04-13.393092

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

25 (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 2024GW4 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	1959-03-07 21:28	> 1 mo	0.1286639	0.0747369	1.3918299
EARTH	1990-04-04 03:38	> 1 mo	0.0382907	0.0003696	0.3571624
EARTH	2024-04-09 04:05	< 1 min	0.0010915	0.0010892	0.0000008
EARTH	2049-04-27 15:57	> 1 w	0.1921275	0.0163133	0.3034603
EARTH	2121-03-02 10:32	> 1 mo	0.1421476	0.1058041	0.1651943

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2024GW4

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE/σ	IP	Exp. energy	PS
2099-04-09.174	87802.174	0.920	0.97 ± 0.019	1.87E6	2.78E-7	2.80E-9	-8.51
2102-04-09.913	88897.913	-1.512	1.15 ± 0.000	1.99E6	1.32E-7	1.31E-9	-8.85
2102-04-09.917	88897.917	-1.425	1.10 ± 0.013	4.14E4	5.82E-6	5.74E-8	-7.21


Based on 25 optical observations (of which 0 are rejected as outliers) from 2024/04/11.416 to 2024/04/13.393.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.38 and 1.38 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 4.0, Date of computation=20240413 100708.800 UTC.

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