Asteroids

138095 2000DK79 help

Last update: 2025-10-13 13:18 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Amor

Perihelion (q)

1.040

Aphelion (Q)

2.513

Eccentricity (e)

0.415

Inclination (i)

60.7

deg

Orbit period (P)

864.9

Earth MOID

0.04901

U parameter

0.0

Next Earth close approach

Date

2058-11-08

Nominal distance (from Earth center)

0.06537

9778573

Maximum Brightness

11.7

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

1700 - 4000*

Taxonomic type

Rotation period (T)

4.243

Discovery Information

Discovery Date

2000-02-26

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.776591

1-sigma variation

3.413E-9

Unit

Eccentricity (e)

Value

0.414535

1-sigma variation

4.511E-8

Unit

Inclination (i)

Value

60.6850

1-sigma variation

7.536E-6

Unit

Long. of Ascending Node (Ω)

Value

43.4518

1-sigma variation

1.949E-6

Unit

Arg. of Perihelion (ω)

Value

2.5995

1-sigma variation

5.712E-6

Unit

Mean Anomaly (M)

Value

26.59042

1-sigma variation

0.00001

Unit

Perihelion distance

Value

1.040131

1-sigma variation

Unit

Aphelion distance

Value

2.513050

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.049013

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

1.501372

1-sigma variation

Unit

MOID

Value

0.049007

1-sigma variation

Unit

Orbit Period

Value

864.9270

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.16508E-17	8.97582E-18	-3.15755E-15	-6.78518E-16	5.68916E-15	-1.96192E-14
e	8.97582E-18	2.03509E-15	6.03759E-14	-7.60673E-14	-4.80592E-14	-1.08426E-14
i	-3.15755E-15	6.03759E-14	5.67899E-11	4.92060E-12	-1.80252E-12	-2.51871E-12
Ω	-6.78518E-16	-7.60673E-14	4.92060E-12	3.79696E-12	1.58507E-12	3.03192E-15
ω	5.68916E-15	-4.80592E-14	-1.80252E-12	1.58507E-12	3.26304E-11	-2.03368E-11
M	-1.96192E-14	-1.08426E-14	-2.51871E-12	3.03192E-15	-2.03368E-11	3.82328E-11

Date of computation: 2025-10-13 13:18 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

4.243

Unit

Source

[1]

Quality

Value

3,B,R

Unit

Source

[1]

Amplitude

Value

0.2

Unit

mag

Source

[1]

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

15.94

15.991

Unit

mag

Source

[2]

[3]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[3]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[4]

Diameter

Value

1700 - 4000*

Unit

Source

[4]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

0.3

0.45

0.77

Unit

R-I

V-R

B-V

Source

[2]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Radar R

Unit

Source

[5]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Warner, B.D. et al. (2014) MPB 41, 75-77. (LIGHTCURVE ANALYSIS OF THE NEAR-EARTH ASTEROID (138095) 2000 DK79) 2.) Hicks, M. et al. (2013) href="http://www.astronomerstelegram.org/?read=5591"> ATel#5591 (Broadband Photometry of the Large Potentially Hazardous Asteroid 138095 (2000 DK79)) 3.) href="http://echo.jpl.nasa.gov/asteroids/index.html">JPL's NEO Radar Detection Program Webpage
[2]	EARN	1.) Hicks, M. et al. (2013) href="http://www.astronomerstelegram.org/?read=5591"> ATel#5591 (Broadband Photometry of the Large Potentially Hazardous Asteroid 138095 (2000 DK79))
[3]	ESA Aegis	ESA orbit determination and impact monitoring system
[4]	Estimation	Estimated from absolute magnitude
[5]	EARN	1.) href="http://echo.jpl.nasa.gov/asteroids/index.html">JPL's NEO Radar Detection Program Webpage

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

14431

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.568607

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

1986-04-09.38333

Unit

Source

[2]

Last Observation

Value

2025-10-12.614688

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

868 (4)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2013-11-15

Unit

Source

[3]

Last Observation

Value

2013-11-21

Unit

Source

[3]

Delay (Discarded)

Value

3 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

1 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

4 (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 138095 2000DK79 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	1968-11-11 12:13	< 1 min	0.1704478	0.1704457	0.0000007
EARTH	1987-10-31 15:19	< 1 min	0.1587786	0.1587773	0.0000004
EARTH	2013-11-10 05:25	< 1 s	0.1260359	0.1260358	0.0000000
EARTH	2058-11-08 00:08	< 1 min	0.0653657	0.0653643	0.0000005
EARTH	2103-11-07 23:07	< 1 min	0.0477544	0.0477539	0.0000001

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
358.34099126	302.95318269	0.04900671	MINIMUM
189.27232627	126.04503420	1.50676893	SADDLE
36.39684741	159.32364439	2.02080303	SADDLE
321.90956077	89.50028221	2.03334327	SADDLE
355.48191768	120.81034333	2.05076603	MAXIMUM
178.78617410	302.71179676	3.50396591	MAXIMUM

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MOID Plots

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