Asteroids

2024HE2 help

Last update: 2024-05-15 18:30 UTC

Orbital Properties

Epoch

60400.0

MJD

Orbit type

Apollo

Perihelion (q)

0.899

Aphelion (Q)

2.980

Eccentricity (e)

0.536

Inclination (i)

6.2

deg

Orbit period (P)

986.8

Earth MOID

0.00803

U parameter

7.1

Next Earth close approach

Date

2051-05-18

Nominal distance (from Earth center)

0.06498

9720132

Maximum Brightness

24.7

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

25.9

mag

Diameter

17 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2024-04-29

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

1.939821

1-sigma variation

0.000685

Unit

Eccentricity (e)

Value

0.536480

1-sigma variation

0.000177

Unit

Inclination (i)

Value

6.1719

1-sigma variation

0.0015

Unit

Long. of Ascending Node (Ω)

Value

222.4337

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

51.0966

1-sigma variation

0.0005

Unit

Mean Anomaly (M)

Value

333.56546

1-sigma variation

0.01493

Unit

Perihelion distance

Value

0.899146

1-sigma variation

Unit

Aphelion distance

Value

2.980496

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.025096

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

1.093335

1-sigma variation

Unit

MOID

Value

0.008033

1-sigma variation

Unit

Orbit Period

Value

986.8270

1-sigma variation

Unit

U parameter

Value

7.1

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.69377E-7	1.21112E-7	1.03261E-6	-8.41576E-8	3.73549E-7	1.02272E-5
e	1.21112E-7	3.12503E-8	2.66441E-7	-2.17150E-8	9.63887E-8	2.63889E-6
i	1.03261E-6	2.66441E-7	2.27181E-6	-1.85119E-7	8.21809E-7	2.24992E-5
Ω	-8.41576E-8	-2.17150E-8	-1.85119E-7	1.51069E-8	-6.69992E-8	-1.83369E-6
ω	3.73549E-7	9.63887E-8	8.21809E-7	-6.69992E-8	2.98403E-7	8.13895E-6
M	1.02272E-5	2.63889E-6	2.24992E-5	-1.83369E-6	8.13895E-6	2.22837E-4

Date of computation: 2024-05-07 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

25.916

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

17 - 40*

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 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

0.658592

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2024-04-29.177424

Unit

Source

[2]

Last Observation

Value

2024-05-07.444283

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

85 (3)

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 2024HE2 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	1951-05-27 15:29	> 1 w	0.0976993	0.0192258	0.0271697
EARTH	1978-07-27 06:20	> 1 w	0.1292127	0.1139469	0.0175443
EARTH	1997-04-26 19:44	> 1 d	0.1099875	0.0043797	0.0815691
EARTH	2005-08-22 16:21	> 1 d	0.1348962	0.1084473	0.0347611
EARTH	2024-05-06 20:14	< 1 s	0.0080619	0.0080551	0.0000023
EARTH	2051-05-18 20:41	> 1 w	0.0649751	0.0055236	0.0647124
EARTH	2078-07-09 01:09	> 1 d	0.1447582	0.1418043	0.0011087
EARTH	2097-04-23 16:26	> 1 d	0.1647061	0.0055393	0.0749920
EARTH	2105-08-16 14:13	> 1 w	0.1041477	0.1041464	0.0002977
EARTH	2124-05-05 17:16	> 1 w	0.0313993	0.0123789	0.1393632

Download as: