Asteroids

394130 2006HY51 help

Last update: 2025-07-29 02:36 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.082

Aphelion (Q)

5.096

Eccentricity (e)

0.968

Inclination (i)

33.6

deg

Orbit period (P)

1521.3

Earth MOID

0.11283

U parameter

0.0

Next Earth close approach

Date

Nominal distance (from Earth center)

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

17.3

mag

Diameter

830

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2006-04-26

Observatory

Lincoln Laboratory ETS, New Mexico

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

2.588637

1-sigma variation

1.096E-8

Unit

Eccentricity (e)

Value

0.968481

1-sigma variation

1.568E-8

Unit

Inclination (i)

Value

33.5587

1-sigma variation

1.441E-5

Unit

Long. of Ascending Node (Ω)

Value

40.6054

1-sigma variation

1.255E-5

Unit

Arg. of Perihelion (ω)

Value

341.9907

1-sigma variation

1.135E-5

Unit

Mean Anomaly (M)

Value

180.74402

1-sigma variation

0.00001

Unit

Perihelion distance

Value

0.081592

1-sigma variation

Unit

Aphelion distance

Value

5.095683

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.908398

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

1.026901

1-sigma variation

Unit

MOID

Value

0.112828

1-sigma variation

Unit

Orbit Period

Value

1521.2664

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.20097E-16	4.34497E-17	-1.54294E-14	6.22711E-14	-6.37373E-14	-5.82616E-14
e	4.34497E-17	2.45830E-16	-1.00415E-14	-2.58946E-14	5.41340E-14	-5.66635E-14
i	-1.54294E-14	-1.00415E-14	2.07768E-10	-1.02389E-10	6.87358E-11	2.03187E-11
Ω	6.22711E-14	-2.58946E-14	-1.02389E-10	1.57387E-10	-1.25271E-10	-1.67396E-11
ω	-6.37373E-14	5.41340E-14	6.87358E-11	-1.25271E-10	1.28925E-10	3.63894E-12
M	-5.82616E-14	-5.66635E-14	2.03187E-11	-1.67396E-11	3.63894E-12	4.80515E-11

Date of computation: 2025-07-29 02:36 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

[1]

Taxonomy (all)

Value

Unit

Source

[2]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

17.256

Unit

mag

Source

[3]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[3]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.326

0.071

0.157

Unit

Source

[4]

[6]

[5]

Diameter

Value

830

Unit

Source

[4]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

Unit

mag

Source

[-]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Visual S

Unit

Source

[7]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) N. G. Simion et al, Spectral properties of near-Earth objects with low-Jovian Tisserand invariant (2021)
[2]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[3]	ESA Aegis	ESA orbit determination and impact monitoring system
[4]	EARN	1.) Joseph R. Masiero et al 2021 Planet. Sci. J. 2 162
[5]	EARN	1.) Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; et al. (2011) Astrophys. J. 741, A90. See also Grav 2012b and Masiero 2012.
[6]	EARN	1.) Mainzer, A. et al. (2011) ApJ 743, 156. (NEOWISE Observations of Near-Earth Objects: Preliminary Results) (albedo and diameters of 428 NEOs)
[7]	EARN	1.) Binzel, R.P. et al. (2006) LPSC 37, 1491. (The MIT-Hawaii-IRTF joint campaign for NEO spectral reconnaissance.) 2.) Binzel, R.P. et al. href="http://smass.mit.edu/minus.html"> Webpage

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

6245

Unit

Source

[1]

Unobserved

Value

804

Unit

Source

[1]

Normalized RMS of residuals

Value

0.524702

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2006-04-26.35039

Unit

Source

[2]

Last Observation

Value

2023-06-01.126599

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

320 (2)

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 394130 2006HY51 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	1985-05-15 01:03	< 1 min	0.1087551	0.1087536	0.0000005

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
308.62654148	127.23125504	0.11282771	MINIMUM
49.51510508	73.86275649	0.41709334	MINIMUM
354.07694804	251.20467552	0.92498543	SADDLE
354.62680578	75.61440127	1.07677141	SADDLE
179.63208424	102.99246466	4.11051817	SADDLE
180.18105190	283.05350332	6.07956718	MAXIMUM

Download:

MOID Plots

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