Asteroids

2010AL30 help

Last update: 2026-06-04 23:11 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.724

Aphelion (Q)

1.368

Eccentricity (e)

0.308

Inclination (i)

3.8

deg

Orbit period (P)

390.7

Earth MOID

0.00098

U parameter

3.5

Next Earth close approach

Date

2028-08-07

Nominal distance (from Earth center)

0.07782

11641975

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

27.1

mag

Diameter

10 - 22*

Taxonomic type

Rotation period (T)

0.1466

Discovery Information

Discovery Date

2010-01-10

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.045941

1-sigma variation

3.489E-7

Unit

Eccentricity (e)

Value

0.307525

1-sigma variation

3.277E-7

Unit

Inclination (i)

Value

3.8313

1-sigma variation

1.253E-5

Unit

Long. of Ascending Node (Ω)

Value

112.3304

1-sigma variation

0.0004

Unit

Arg. of Perihelion (ω)

Value

97.8035

1-sigma variation

0.0004

Unit

Mean Anomaly (M)

Value

56.77075

1-sigma variation

0.00726

Unit

Perihelion distance

Value

0.724289

1-sigma variation

Unit

Aphelion distance

Value

1.367594

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.004794

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.107749

1-sigma variation

Unit

MOID

Value

0.000976

1-sigma variation

Unit

Orbit Period

Value

390.7145

1-sigma variation

Unit

U parameter

Value

3.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.21705E-13	-1.01710E-13	-2.94673E-12	1.27935E-10	-1.40037E-10	-2.53396E-9
e	-1.01710E-13	1.07379E-13	2.50970E-12	-1.07411E-10	1.19419E-10	2.11618E-9
i	-2.94673E-12	2.50970E-12	1.57122E-10	-3.04626E-9	3.33666E-9	6.11472E-8
Ω	1.27935E-10	-1.07411E-10	-3.04626E-9	1.34530E-7	-1.47297E-7	-2.66377E-6
ω	-1.40037E-10	1.19419E-10	3.33666E-9	-1.47297E-7	1.61428E-7	2.91562E-6
M	-2.53396E-9	2.11618E-9	6.11472E-8	-2.66377E-6	2.91562E-6	5.27590E-5

Date of computation: 2026-06-04 23:11 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

0.1466

Unit

Source

[1]

Quality

Value

Unit

Source

[1]

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

27.14

Unit

mag

Source

[2]

Slope Parameter (G)

Value

0.15**

Unit

Source

[2]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[3]

Diameter

Value

10 - 22*

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

Radar R

Unit

Source

[4]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Ryan, W. (2011) http://infohost.nmt.edu/~bryan/research/work/mro_images/
[2]	ESA Aegis	ESA orbit determination and impact monitoring system
[3]	Estimation	Estimated from absolute magnitude
[4]	EARN	1.) href="http://echo.jpl.nasa.gov/asteroids/index.html">JPL's NEO Radar Detection Program Webpage 2.) Slade, M.A. et al. (2010) DPS 42, 5701. (abstract) (First Results Of The New Goldstone Delay-Doppler Radar Chirp Imaging System) (2009UN3,2010AL30)

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

Unit

Source

[1]

Unobserved

Value

5989

Unit

Source

[1]

Normalized RMS of residuals

Value

0.430243

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2010-01-10.27372

Unit

Source

[2]

Last Observation

Value

2010-01-13.458502

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

311 (8)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2010-01-13

Unit

Source

[3]

Last Observation

Value

2010-01-13

Unit

Source

[3]

Delay (Discarded)

Value

0 (0)

Unit

Source

[-]

Doppler (Discarded)

Value

7 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

7 (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

Note: Ephemerides requests are limited to a maximum of 1000 points and a final date not exceeding 2040/12/31 00:00.

Close Approaches for 2010AL30 from 1950 to 2126

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
VENUS	1968-10-01 09:26	42.0	0.0367321	0.0364137	0.0001069
EARTH	2006-01-07 21:36	< 1 min	0.1561248	0.1560952	0.0000099
VENUS	2006-02-25 14:14	2.7	0.0111840	0.0111613	0.0000076
EARTH	2007-01-10 02:15	< 1 min	0.1052227	0.1052088	0.0000046
EARTH	2008-01-12 04:50	< 1 s	0.0562869	0.0562860	0.0000003
EARTH	2009-01-12 21:23	< 1 min	0.0139029	0.0138873	0.0000052
EARTH	2010-01-13 12:46	< 1 s	0.0008624	0.0008624	0.0000000
VENUS	2012-05-17 10:14	9.6	0.0237185	0.0236968	0.0000072
EARTH	2013-08-12 20:46	1.5	0.1944463	0.1943488	0.0000325
EARTH	2025-01-08 00:35	7.4	0.1307438	0.1303498	0.0001313
EARTH	2028-08-07 10:33	8.7	0.0778218	0.0774218	0.0001334
VENUS	2041-03-23 18:41	1.7	0.0254371	0.0254271	0.0000033
EARTH	2043-08-05 15:59	2.9	0.0261907	0.0261355	0.0000185
EARTH	2056-01-18 05:44	14.1	0.0965249	0.0953009	0.0004080
EARTH	2058-07-28 20:10	37.1	0.1247287	0.1235078	0.0004071
VENUS	2065-11-03 06:07	119.4	0.0184584	0.0178997	0.0001887
EARTH	2071-01-10 06:24	8.6	0.1025149	0.1021517	0.0001211
EARTH	2074-08-07 10:24	2.4	0.0487474	0.0487192	0.0000094
VENUS	2081-11-29 20:36	94.6	0.0349597	0.0343481	0.0002049
EARTH	2087-01-16 03:37	12.2	0.0299001	0.0291349	0.0002552
EARTH	2089-07-12 04:29	3.2	0.1725751	0.1725326	0.0000142
EARTH	2102-01-15 03:13	87.8	0.0152449	0.0109895	0.0014377
EARTH	2105-08-12 17:21	252.1	0.1319531	0.1145259	0.0058298
VENUS	2106-07-13 02:02	> 1 d	0.0401164	0.0249631	0.0060912
EARTH	2118-01-19 15:17	62.3	0.1219131	0.0878756	0.0113506
EARTH	2120-07-30 14:32	931.9	0.1240833	0.0918087	0.0108489

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
281.06668899	11.59512006	0.00094413	MINIMUM
83.79179982	211.23067499	0.02335160	MINIMUM
3.40356851	112.28322261	0.28816569	SADDLE
181.73191375	290.81347879	0.38052638	SADDLE
3.78734054	292.83335626	1.71783321	SADDLE
182.16541019	111.13666763	2.37286216	MAXIMUM

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MOID Plots

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