Asteroids

462959 2011DU help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.799

Aphelion (Q)

1.544

Eccentricity (e)

0.318

Inclination (i)

2.9

deg

Orbit period (P)

463.2

Earth MOID

0.01774

U parameter

0.0

Next Earth close approach

Date

2035-10-16

Nominal distance (from Earth center)

0.10336

15462528

Maximum Brightness

19.2

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

21.1

mag

Diameter

160 - 400*

Taxonomic type

Scomp

Rotation period (T)

10.29

Discovery Information

Discovery Date

2011-02-22

Observatory

Steward Observatory, Kitt Peak-Spacewatch

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

1.171629

1-sigma variation

4.955E-10

Unit

Eccentricity (e)

Value

0.317898

1-sigma variation

2.207E-9

Unit

Inclination (i)

Value

2.9225

1-sigma variation

1.700E-6

Unit

Long. of Ascending Node (Ω)

Value

176.4800

1-sigma variation

2.735E-5

Unit

Arg. of Perihelion (ω)

Value

120.5579

1-sigma variation

2.678E-5

Unit

Mean Anomaly (M)

Value

114.94925

1-sigma variation

5.736E-7

Unit

Perihelion distance

Value

0.799171

1-sigma variation

Unit

Aphelion distance

Value

1.544088

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.260084

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.098297

1-sigma variation

Unit

MOID

Value

0.017741

1-sigma variation

Unit

Orbit Period

Value

463.2163

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.45556E-19	7.57683E-19	2.97929E-16	5.94787E-15	-6.02978E-15	-1.03736E-16
e	7.57683E-19	4.87084E-18	-1.03391E-15	-1.15291E-14	1.04008E-14	3.62410E-16
i	2.97929E-16	-1.03391E-15	2.89019E-12	4.62874E-11	-4.52377E-11	-9.59003E-13
Ω	5.94787E-15	-1.15291E-14	4.62874E-11	7.47969E-10	-7.32180E-10	-1.53854E-11
ω	-6.02978E-15	1.04008E-14	-4.52377E-11	-7.32180E-10	7.16953E-10	1.50308E-11
M	-1.03736E-16	3.62410E-16	-9.59003E-13	-1.53854E-11	1.50308E-11	3.29006E-13

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

10.29

Unit

Source

[3]

Quality

Value

Unit

Source

[3]

Amplitude

Value

0.49

Unit

mag

Source

[3]

Rotation Direction

Value

Unit

Source

[-]

Spinvector L

Value

Unit

Source

[-]

Spinvector B

Value

Unit

Source

[-]

Taxonomy
Taxonomy (all)

Taxonomy

Value

Unit

Source

Taxonomy

Value

Scomp

Unit

Source

[1]

Taxonomy (all)

Value

Unit

Source

[2]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

21.088

Unit

mag

Source

[4]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[4]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[5]

Diameter

Value

160 - 400*

Unit

Source

[5]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

Unit

mag

Source

[-]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Radar R

Unit

Source

[6]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Michaël Marsset et al 2022 AJ 163 165
[2]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[3]	EARN	1.) Warner, B.D. (2017) Minor Planet Bul. 44, 98-107.
[4]	ESA Aegis	ESA orbit determination and impact monitoring system
[5]	Estimation	Estimated from absolute magnitude
[6]	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

5179

Unit

Source

[1]

Unobserved

Value

142

Unit

Source

[1]

Normalized RMS of residuals

Value

0.540769

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2011-02-22.27706

Unit

Source

[2]

Last Observation

Value

2025-04-27.9662

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

644 (2)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2016-10-03

Unit

Source

[3]

Last Observation

Value

2025-04-27

Unit

Source

[3]

Delay (Discarded)

Value

10 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

2 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

12 (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 462959 2011DU 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	1950-09-08 02:53	< 1 min	0.1560034	0.1560019	0.0000005
EARTH	1959-04-21 02:08	< 1 min	0.0768348	0.0768340	0.0000003
EARTH	1969-10-12 02:41	< 1 min	0.0421077	0.0421065	0.0000004
EARTH	1978-05-25 14:38	< 1 min	0.1581132	0.1581126	0.0000002
EARTH	1983-09-20 06:42	< 1 min	0.1278841	0.1278836	0.0000002
EARTH	1992-04-24 18:57	< 1 s	0.0321092	0.0321092	0.0000000
EARTH	2002-10-19 18:43	< 1 s	0.1699700	0.1699699	0.0000000
EARTH	2016-10-06 20:29	< 1 s	0.0389645	0.0389645	0.0000000
EARTH	2025-04-25 15:44	< 1 s	0.0329596	0.0329596	0.0000000
EARTH	2035-10-16 17:27	< 1 s	0.1033606	0.1033605	0.0000000
EARTH	2044-05-24 06:02	< 1 min	0.1562230	0.1562229	0.0000000
EARTH	2049-09-08 03:16	< 1 min	0.1572286	0.1572285	0.0000000
EARTH	2058-04-19 20:28	< 1 s	0.1080001	0.1079999	0.0000000
EARTH	2068-10-09 19:40	< 1 s	0.0183245	0.0183245	0.0000000
EARTH	2077-04-28 20:28	< 1 s	0.0548912	0.0548911	0.0000001
EARTH	2087-10-21 09:08	< 1 s	0.1895671	0.1895667	0.0000001
EARTH	2091-04-15 16:40	< 1 s	0.1979436	0.1979432	0.0000001
EARTH	2101-10-07 22:55	< 1 min	0.0446755	0.0446751	0.0000001
EARTH	2110-04-26 22:40	< 1 s	0.0323001	0.0323001	0.0000000
EARTH	2120-10-16 13:48	< 1 s	0.0873895	0.0873889	0.0000002

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
61.79614644	275.23219574	0.01763786	MINIMUM
295.80604089	111.72132666	0.03205161	MINIMUM
358.33749423	192.78135717	0.22039202	SADDLE
179.23111447	14.13134968	0.56302887	SADDLE
359.07439670	13.81843125	1.78281218	SADDLE
179.62001525	194.40370678	2.55974075	MAXIMUM

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MOID Plots

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