Asteroids

2008WH96 help

Last update: 2025-09-10 00:30 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.817

Aphelion (Q)

1.928

Eccentricity (e)

0.404

Inclination (i)

7.3

deg

Orbit period (P)

587.4

Earth MOID

0.01690

U parameter

0.8

Next Earth close approach

Date

2029-07-25

Nominal distance (from Earth center)

0.19072

28530980

Maximum Brightness

25.2

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

22.9

mag

Diameter

70 - 150*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2008-11-30

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.372564

1-sigma variation

2.602E-8

Unit

Eccentricity (e)

Value

0.404438

1-sigma variation

3.747E-7

Unit

Inclination (i)

Value

7.2969

1-sigma variation

1.522E-5

Unit

Long. of Ascending Node (Ω)

Value

75.4357

1-sigma variation

1.318E-5

Unit

Arg. of Perihelion (ω)

Value

259.4175

1-sigma variation

0.0001

Unit

Mean Anomaly (M)

Value

241.86793

1-sigma variation

0.00002

Unit

Perihelion distance

Value

0.817447

1-sigma variation

Unit

Aphelion distance

Value

1.927681

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.254712

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.052483

1-sigma variation

Unit

MOID

Value

0.016895

1-sigma variation

Unit

Orbit Period

Value

587.3506

1-sigma variation

Unit

U parameter

Value

0.8

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.77047E-16	-9.67037E-15	-3.06200E-14	-8.85778E-14	-1.64690E-12	-4.69719E-13
e	-9.67037E-15	1.40379E-13	7.78763E-13	1.11746E-12	2.45799E-11	6.42076E-12
i	-3.06200E-14	7.78763E-13	2.31686E-10	7.33015E-11	1.27101E-10	-1.54307E-11
Ω	-8.85778E-14	1.11746E-12	7.33015E-11	1.73764E-10	-2.16969E-11	8.81585E-11
ω	-1.64690E-12	2.45799E-11	1.27101E-10	-2.16969E-11	4.81212E-9	9.38394E-10
M	-4.69719E-13	6.42076E-12	-1.54307E-11	8.81585E-11	9.38394E-10	3.93063E-10

Date of computation: 2025-09-10 00:30 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

22.933

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

70 - 150*

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

4575

Unit

Source

[1]

Unobserved

Value

1569

Unit

Source

[1]

Normalized RMS of residuals

Value

0.528687

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2008-11-30.27572

Unit

Source

[2]

Last Observation

Value

2021-06-10.610924

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

54 (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 2008WH96 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	1958-11-05 01:07	1.4	0.0744785	0.0744622	0.0000054
EARTH	1971-06-22 18:20	2.3	0.0865731	0.0865396	0.0000111
EARTH	1979-10-05 08:53	3.1	0.1847741	0.1847618	0.0000041
EARTH	1992-06-11 13:41	< 1 min	0.0291369	0.0291223	0.0000049
EARTH	2008-11-04 07:17	< 1 min	0.0774593	0.0774578	0.0000005
EARTH	2021-06-11 12:31	< 1 s	0.0351666	0.0351663	0.0000001
EARTH	2029-07-25 01:19	< 1 min	0.1907178	0.1907164	0.0000005
EARTH	2045-11-08 21:43	< 1 min	0.0686211	0.0686164	0.0000015
EARTH	2058-06-08 17:35	< 1 min	0.0845170	0.0844955	0.0000072
EARTH	2066-07-06 19:31	2.0	0.1478547	0.1478423	0.0000041
EARTH	2082-11-05 08:56	< 1 min	0.0772334	0.0772324	0.0000003
EARTH	2095-06-05 08:14	< 1 min	0.1524763	0.1524589	0.0000058
EARTH	2103-06-25 18:39	1.4	0.0957540	0.0957328	0.0000071
EARTH	2119-11-03 07:38	1.7	0.1012897	0.1012650	0.0000082

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
309.28975350	160.17374367	0.01761276	MINIMUM
49.08737338	303.67108395	0.06700499	MINIMUM
359.84913697	233.23740750	0.22319860	SADDLE
179.56642112	51.87197260	0.95356866	SADDLE
358.25858258	50.72743425	1.80393636	SADDLE
178.98886940	231.48721019	2.93242727	MAXIMUM

Download:

MOID Plots

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