Asteroids

458732 2011MD5 help

Last update: 2026-07-30 09:40 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.989

Aphelion (Q)

3.983

Eccentricity (e)

0.602

Inclination (i)

10.5

deg

Orbit period (P)

1431.4

Earth MOID

0.06136

U parameter

0.0

Next Earth close approach

Date

2066-10-08

Nominal distance (from Earth center)

0.0971

14526108

Maximum Brightness

16.1

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

17.9

mag

Diameter

1580

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2011-06-30

Observatory

Pan-STARRS 1, 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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

2.485675

1-sigma variation

5.604E-9

Unit

Eccentricity (e)

Value

0.602313

1-sigma variation

9.904E-9

Unit

Inclination (i)

Value

10.5482

1-sigma variation

2.383E-6

Unit

Long. of Ascending Node (Ω)

Value

170.3052

1-sigma variation

4.754E-6

Unit

Arg. of Perihelion (ω)

Value

224.9194

1-sigma variation

6.833E-6

Unit

Mean Anomaly (M)

Value

242.25848

1-sigma variation

1.277E-6

Unit

Perihelion distance

Value

0.988520

1-sigma variation

Unit

Aphelion distance

Value

3.982830

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.769024

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.103556

1-sigma variation

Unit

MOID

Value

0.061363

1-sigma variation

Unit

Orbit Period

Value

1431.4130

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.14037E-17	-1.90553E-17	-1.87495E-16	-1.18818E-15	-5.90951E-15	-3.80937E-15
e	-1.90553E-17	9.80907E-17	3.03602E-15	-1.03467E-14	2.82161E-14	1.71915E-15
i	-1.87495E-16	3.03602E-15	5.67700E-12	2.20771E-12	-1.44739E-12	-2.32010E-13
Ω	-1.18818E-15	-1.03467E-14	2.20771E-12	2.25977E-11	-2.21850E-11	2.70977E-13
ω	-5.90951E-15	2.82161E-14	-1.44739E-12	-2.21850E-11	4.66856E-11	-4.41521E-12
M	-3.80937E-15	1.71915E-15	-2.32010E-13	2.70977E-13	-4.41521E-12	1.63105E-12

Date of computation: 2026-07-30 09:40 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

17.851

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.049

Unit

Source

[2]

Diameter

Value

1580

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]	EARN	1.) Joseph R. Masiero et al 2021 Planet. Sci. J. 2 162

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

4668

Unit

Source

[1]

Unobserved

Value

905

Unit

Source

[1]

Normalized RMS of residuals

Value

0.489806

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2011-06-30.45

Unit

Source

[2]

Last Observation

Value

2024-04-10.19386

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

1468 (21)

Unit

Source

[1]

Radar Summary

First Observation
Last Observation
Delay (Discarded)
Doppler (Discarded)
Total Optical Observations (Discarded)

Radar

Value

Unit

Source

First Observation

Value

2023-09-28

Unit

Source

[3]

Last Observation

Value

2023-09-28

Unit

Source

[3]

Delay (Discarded)

Value

1 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[-]

Total Radar Observations (Discarded)

Value

1 (0)

Unit

Source

[1]

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
[3]	JPL Radar Observations	Jet Propulsion Laboratory: https://ssd.jpl.nasa.gov/dat/radar_data_ast.txt

Filters

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Max residual (arcsec):

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Computation parameters

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Note: Ephemerides requests are limited to a maximum of 1000 points and a final date not exceeding 2040/12/31 00:00.

Close Approaches for 458732 2011MD5 from 1950 to 2126

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1976-09-15 06:31	< 1 min	0.0708328	0.0708286	0.0000014
EARTH	2023-09-22 05:16	< 1 s	0.0758527	0.0758527	0.0000000
EARTH	2066-10-08 23:45	< 1 min	0.0971010	0.0970976	0.0000011
EARTH	2120-11-17 17:33	< 1 min	0.1663258	0.1663255	0.0000001

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
344.35915139	260.66999279	0.06136304	MINIMUM
359.44007341	110.13076886	1.99023889	SADDLE
180.13626901	110.17385084	2.98827598	SADDLE
179.44771895	289.83299049	4.97051963	MAXIMUM

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MOID Plots

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