Asteroids

2012DW60 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.925

Aphelion (Q)

1.298

Eccentricity (e)

0.168

Inclination (i)

4.8

deg

Orbit period (P)

427.9

Earth MOID

0.00192

U parameter

0.0

Next Earth close approach

Date

2026-08-01

Nominal distance (from Earth center)

0.07885

11795409

Maximum Brightness

23.6

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.5

mag

Diameter

13 - 30*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2012-02-29

Observatory

LPL/Spacewatch II

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

1.111359

1-sigma variation

3.099E-9

Unit

Eccentricity (e)

Value

0.167941

1-sigma variation

3.491E-8

Unit

Inclination (i)

Value

4.8200

1-sigma variation

5.580E-6

Unit

Long. of Ascending Node (Ω)

Value

353.5080

1-sigma variation

1.187E-5

Unit

Arg. of Perihelion (ω)

Value

237.8494

1-sigma variation

1.383E-5

Unit

Mean Anomaly (M)

Value

203.88569

1-sigma variation

0.00002

Unit

Perihelion distance

Value

0.924716

1-sigma variation

Unit

Aphelion distance

Value

1.298002

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.180129

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.003876

1-sigma variation

Unit

MOID

Value

0.001921

1-sigma variation

Unit

Orbit Period

Value

427.9370

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	9.60458E-18	9.13471E-17	-9.38552E-15	1.23944E-14	1.23654E-14	-7.45206E-14
e	9.13471E-17	1.21877E-15	-4.92205E-14	6.06681E-14	2.56477E-13	-7.39527E-13
i	-9.38552E-15	-4.92205E-14	3.11327E-11	-4.43452E-11	3.22640E-11	6.88454E-11
Ω	1.23944E-14	6.06681E-14	-4.43452E-11	1.40801E-10	-1.08617E-10	-1.02539E-10
ω	1.23654E-14	2.56477E-13	3.22640E-11	-1.08617E-10	1.91198E-10	-1.21451E-10
M	-7.45206E-14	-7.39527E-13	6.88454E-11	-1.02539E-10	-1.21451E-10	6.00691E-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

26.493

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

13 - 30*

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

Radar R

Unit

Source

[3]

Download this part as:

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	Estimation	Estimated from absolute magnitude
[3]	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

2706

Unit

Source

[1]

Unobserved

Value

2281

Unit

Source

[1]

Normalized RMS of residuals

Value

0.468669

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2012-02-29.49427

Unit

Source

[2]

Last Observation

Value

2019-07-28.306322

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

64 (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

2012-03-09

Unit

Source

[3]

Last Observation

Value

2012-03-09

Unit

Source

[3]

Delay (Discarded)

Value

0 (0)

Unit

Source

[-]

Doppler (Discarded)

Value

2 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

2 (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 2012DW60 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	1963-07-30 12:18	1.3	0.1449923	0.1449325	0.0000199
EARTH	1969-07-17 13:32	2.5	0.0827512	0.0827334	0.0000059
EARTH	1975-04-13 14:43	3.7	0.0828640	0.0828556	0.0000028
EARTH	1981-03-08 17:53	< 1 min	0.0478454	0.0478317	0.0000046
EARTH	2000-07-30 01:22	< 1 min	0.1415569	0.1415502	0.0000022
EARTH	2006-06-10 23:32	1.4	0.1059599	0.1059590	0.0000003
EARTH	2012-03-12 14:40	< 1 s	0.0064018	0.0064018	0.0000000
EARTH	2019-02-09 08:08	< 1 min	0.1897057	0.1897052	0.0000002
EARTH	2019-05-22 01:50	< 1 min	0.1140649	0.1140647	0.0000001
EARTH	2019-08-21 17:47	< 1 min	0.1552871	0.1552868	0.0000001
EARTH	2026-08-01 05:18	< 1 min	0.0788474	0.0788470	0.0000001
EARTH	2046-03-12 12:15	< 1 min	0.0125887	0.0125862	0.0000008
EARTH	2053-02-28 11:24	1.3	0.1982375	0.1981615	0.0000253
EARTH	2068-08-05 23:54	3.5	0.1037221	0.1035583	0.0000546
EARTH	2075-07-28 18:29	7.5	0.0966594	0.0965145	0.0000483
EARTH	2082-04-11 04:34	47.1	0.0859285	0.0858099	0.0000395
EARTH	2089-03-09 12:39	2.7	0.0440008	0.0439206	0.0000268
EARTH	2104-08-08 13:51	9.6	0.1234409	0.1229141	0.0001757
EARTH	2111-06-11 04:45	275.6	0.1163131	0.1161911	0.0000407
EARTH	2111-08-16 18:02	153.7	0.1331131	0.1325265	0.0001958
EARTH	2118-03-13 10:33	34.4	0.0133314	0.0125644	0.0002557

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
309.16559177	69.50548184	0.00152994	MINIMUM
65.89359762	204.66469696	0.06637800	MINIMUM
12.50398113	143.26834619	0.11453955	SADDLE
186.00298324	314.64177516	0.32005103	SADDLE
4.73277936	313.95032847	1.91249193	SADDLE
182.73794104	131.91445454	2.30713104	MAXIMUM

Download:

MOID Plots

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