Asteroids

2024SA4 help

Last update: 2025-03-29 00:36 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.897

Aphelion (Q)

2.754

Eccentricity (e)

0.509

Inclination (i)

46.0

deg

Orbit period (P)

900.8

Earth MOID

0.15307

U parameter

5.3

Next Earth close approach

Date

2030-03-24

Nominal distance (from Earth center)

0.15572

23295894

Maximum Brightness

17.6

mag

Risk

Object is not in risk list

Object is in priority list

Physical Properties

Absolute Magnitude (H)

20.2

mag

Diameter

250 - 600*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2024-09-26

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

1.825342

1-sigma variation

0.000044

Unit

Eccentricity (e)

Value

0.508813

1-sigma variation

0.000004

Unit

Inclination (i)

Value

46.0197

1-sigma variation

0.0011

Unit

Long. of Ascending Node (Ω)

Value

8.2005

1-sigma variation

0.0003

Unit

Arg. of Perihelion (ω)

Value

107.0510

1-sigma variation

0.0012

Unit

Mean Anomaly (M)

Value

29.31515

1-sigma variation

0.00126

Unit

Perihelion distance

Value

0.896585

1-sigma variation

Unit

Aphelion distance

Value

2.754099

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.589140

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.178595

1-sigma variation

Unit

MOID

Value

0.153067

1-sigma variation

Unit

Orbit Period

Value

900.7718

1-sigma variation

Unit

U parameter

Value

5.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.96679E-9	1.79965E-10	4.78255E-8	-1.18203E-8	-5.20333E-8	-5.57038E-8
e	1.79965E-10	1.80364E-11	4.27181E-9	-1.05779E-9	-4.63006E-9	-5.05367E-9
i	4.78255E-8	4.27181E-9	1.17935E-6	-2.91514E-7	-1.27132E-6	-1.35858E-6
Ω	-1.18203E-8	-1.05779E-9	-2.91514E-7	7.22412E-8	3.13879E-7	3.35747E-7
ω	-5.20333E-8	-4.63006E-9	-1.27132E-6	3.13879E-7	1.38915E-6	1.47616E-6
M	-5.57038E-8	-5.05367E-9	-1.35858E-6	3.35747E-7	1.47616E-6	1.57999E-6

Date of computation: 2025-03-24 19:37 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

20.166

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

250 - 600*

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

179

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.545946

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2024-09-26.387873

Unit

Source

[2]

Last Observation

Value

2025-03-23.92944

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

38 (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 2024SA4 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	1956-03-27 11:35	798.2	0.1704489	0.1523247	0.0082288
EARTH	1993-03-26 13:48	338.1	0.1594540	0.1542180	0.0022226
EARTH	2030-03-24 14:37	47.6	0.1557234	0.1553096	0.0001500
EARTH	2067-03-24 09:43	377.3	0.1602893	0.1561629	0.0020978
EARTH	2104-03-23 17:24	688.3	0.1720413	0.1582993	0.0068740

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
41.52010831	81.14565286	0.15306712	MINIMUM
303.13017051	280.90210103	0.42912637	MINIMUM
348.99668888	353.09925589	0.74393979	SADDLE
354.49695973	186.42088284	1.76829601	SADDLE
172.45403888	194.12007524	2.14453402	SADDLE
186.67325710	24.91335928	3.53948013	MAXIMUM

Download:

MOID Plots

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