Asteroids

523625 2008DG17 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

1.010

Aphelion (Q)

2.664

Eccentricity (e)

0.450

Inclination (i)

41.1

deg

Orbit period (P)

909.3

Earth MOID

0.07856

U parameter

0.0

Next Earth close approach

Date

2125-02-21

Nominal distance (from Earth center)

0.1845

27601501

Maximum Brightness

18.2

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

19.6

mag

Diameter

1030

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2008-02-29

Observatory

Catalina Sky Survey

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

1.836858

1-sigma variation

2.469E-9

Unit

Eccentricity (e)

Value

0.450225

1-sigma variation

9.703E-8

Unit

Inclination (i)

Value

41.0975

1-sigma variation

2.237E-5

Unit

Long. of Ascending Node (Ω)

Value

324.3504

1-sigma variation

3.697E-6

Unit

Arg. of Perihelion (ω)

Value

215.0744

1-sigma variation

4.984E-5

Unit

Mean Anomaly (M)

Value

32.31987

1-sigma variation

0.00002

Unit

Perihelion distance

Value

1.009858

1-sigma variation

Unit

Aphelion distance

Value

2.663858

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.305670

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.082119

1-sigma variation

Unit

MOID

Value

0.078557

1-sigma variation

Unit

Orbit Period

Value

909.3097

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.09355E-18	4.45339E-17	1.26678E-14	-1.09005E-15	2.36266E-14	-1.54366E-14
e	4.45339E-17	9.41558E-15	9.88036E-13	-5.13947E-14	4.77142E-12	-1.49593E-12
i	1.26678E-14	9.88036E-13	5.00359E-10	-1.36410E-11	4.34204E-10	-1.32865E-10
Ω	-1.09005E-15	-5.13947E-14	-1.36410E-11	1.36669E-11	-6.81106E-12	-2.48039E-12
ω	2.36266E-14	4.77142E-12	4.34204E-10	-6.81106E-12	2.48404E-9	-7.87200E-10
M	-1.54366E-14	-1.49593E-12	-1.32865E-10	-2.48039E-12	-7.87200E-10	2.63575E-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

19.561

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.024

Unit

Source

[2]

Diameter

Value

1030

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 2020 Planet. Sci. J. 1 5

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

5470

Unit

Source

[1]

Unobserved

Value

948

Unit

Source

[1]

Normalized RMS of residuals

Value

0.39567

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2008-02-29.14795

Unit

Source

[2]

Last Observation

Value

2023-02-20.43119

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

295 (1)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2013-02-18

Unit

Source

[3]

Last Observation

Value

2013-02-18

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

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 523625 2008DG17 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	2008-02-21 12:01	< 1 s	0.1907740	0.1907738	0.0000001
EARTH	2013-02-16 11:17	< 1 s	0.0957297	0.0957296	0.0000000
EARTH	2018-02-12 17:50	< 1 s	0.1001566	0.1001564	0.0000001
EARTH	2023-02-08 15:14	< 1 s	0.1929697	0.1929693	0.0000001
EARTH	2125-02-21 22:32	< 1 min	0.1845046	0.1845016	0.0000010

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
339.22124847	42.95753875	0.07883783	MINIMUM
196.73130472	259.91607870	1.80493455	SADDLE
15.92353124	274.31279861	1.94584364	SADDLE
174.09008987	67.18482208	3.60892349	MAXIMUM

Download:

MOID Plots

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