Asteroids

2008GX3

Last update: 2021-04-13 13:07 UTC

Orbital Properties

Epoch

59200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.99

Aphelion (Q)

2.792

Eccentricity (e)

0.476

Inclination (i)

9.5

deg

Orbit period (P)

949.8

days

Earth MOID

0.01472

Next Earth close approach

Date

2034-05-24

Nominal distance (from Earth center)

0.13562

20287966

Maximum Brightness

125

Orbit Visualiser

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Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

26.2

Diameter

21*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2008-04-08

Observatory

Lincoln Laboratory ETS, New Mexico

External links

Proper elements

Epoch

Near present day

Near middle of observation arc

Orbit properties

Epoch
Semimajor Axis
Eccentricity (e)
Inclination (i)
Ascending Node (Ω)
Arg. of Perihelion (ω)
Mean Anomaly (M)
Perihelion
Aphelion
Asc. Node-Earth Sep.
Desc. Node-Earth Sep.
MOID
Orbit Period

Value

1-sigma variation

Unit

Epoch

Value

59200.0

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.890974

1-sigma variation

0.01096

Unit

Eccentricity (e)

Value

0.476455

1-sigma variation

0.002941

Unit

Inclination (i)

Value

9.486

1-sigma variation

0.0429

Unit

Ascending Node (Ω)

Value

196.695

1-sigma variation

0.0102

Unit

Arg. of Perihelion (ω)

Value

25.346

1-sigma variation

0.01861

Unit

Mean Anomaly (M)

Value

309.451

1-sigma variation

15.27

Unit

Perihelion

Value

0.99

1-sigma variation

Unit

Aphelion

Value

2.7919

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.02

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

1.56798

1-sigma variation

Unit

MOID

Value

0.01472

1-sigma variation

Unit

Orbit Period

Value

949.7878

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.20066E-4	3.22234E-5	4.70098E-4	-1.11716E-4	2.03918E-4	-1.67271E-1
e	3.22234E-5	8.64814E-6	1.26165E-4	-2.99824E-5	5.47277E-5	-4.48923E-2
i	4.70098E-4	1.26165E-4	1.84063E-3	-4.37400E-4	7.98404E-4	-6.54921E-1
Ω	-1.11716E-4	-2.99824E-5	-4.37400E-4	1.03947E-4	-1.89738E-4	1.55638E-1
ω	2.03918E-4	5.47277E-5	7.98404E-4	-1.89738E-4	3.46358E-4	-2.84090E-1
M	-1.67271E-1	-4.48923E-2	-6.54921E-1	1.55638E-1	-2.84090E-1	2.33035E2

Date of computation: 2020-10-20 18:14 UTC

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)

Taxononomy

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

26.185

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

Unit

Source

[-]

Diameter

Value

21*

Unit

Source

[3]

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

[-]

Sources

No.	Name	Additional
[1]	ESA ODIM	ESA orbit determination and impact monitoring system
[2]	NEODyS	NEO Dynamic Site: https://newton.spacedys.com/neodys2
[3]	Estimation	Estimated from absolute magnitude

**Estimated value

Observational Information

Arc Length
Unobserved

Arc Information

Value

Unit

Source

Arc Length

Value

Unit

days

Source

[1]

Unobserved

Value

4748

Unit

days

Source

[1]

Astrometry Summary

RMS of Residuals
First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

RMS of Residuals

Value

0.644469

Unit

arcseconds

Source

[1]

First Observation

Value

2008-04-08.1911

Unit

Source

[2]

Last Observation

Value

2008-04-12.917257

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

15 (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

[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 2008GX3 from 1950 to 2150

Body	Date	MJD	Nominal distance (au)	Min possible distance (au)	Stretching (au)	Width (au)	Close approach probability
EARTH	1951-04-04.01325	33740.0	0.0405797	0.0129886	1.945E0	9.483E-8	3.42E-2
EARTH	1995-06-04.70793	49872.7	0.1701298	0.0145697	6.211E-1	2.559E-6	8.65E-2
EARTH	2008-04-11.94712	54567.9	0.0186801	0.0183720	1.019E-4	3.999E-8	1.00E0
EARTH	2021-04-12.90907	59316.9	0.0212745	0.0152468	5.649E-1	2.106E-7	1.18E-1
EARTH	2034-05-24.90453	64106.9	0.1356167	0.0151250	1.737E0	1.932E-6	3.38E-2
29	2076-10-31.03846	79607.0	0.0182483	0.0072057	2.964E0	1.736E-6	2.09E-3
EARTH	2081-03-26.42531	81214.4	0.1209915	0.0167382	5.116E0	3.133E-7	1.30E-2
EARTH	2094-04-15.92852	85982.9	0.0320921	0.0146613	1.629E0	2.509E-7	4.08E-2

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