Asteroids

365071 2009AV help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.954

Aphelion (Q)

1.106

Eccentricity (e)

0.074

Inclination (i)

45.9

deg

Orbit period (P)

381.7

Earth MOID

0.02179

U parameter

0.6

Next Earth close approach

Date

2034-08-21

Nominal distance (from Earth center)

0.17763

26572352

Maximum Brightness

16.7

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

18.1

mag

Diameter

874

Taxonomic type

S/Sr

Rotation period (T)

Discovery Information

Discovery Date

2009-01-02

Observatory

Mt. Lemmon 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

1.029715

1-sigma variation

9.693E-9

Unit

Eccentricity (e)

Value

0.073939

1-sigma variation

3.841E-8

Unit

Inclination (i)

Value

45.8666

1-sigma variation

1.371E-5

Unit

Long. of Ascending Node (Ω)

Value

150.7295

1-sigma variation

4.041E-6

Unit

Arg. of Perihelion (ω)

Value

322.1214

1-sigma variation

2.227E-5

Unit

Mean Anomaly (M)

Value

97.09875

1-sigma variation

0.00007

Unit

Perihelion distance

Value

0.953579

1-sigma variation

Unit

Aphelion distance

Value

1.105851

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.021808

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.075619

1-sigma variation

Unit

MOID

Value

0.021785

1-sigma variation

Unit

Orbit Period

Value

381.6577

1-sigma variation

Unit

U parameter

Value

0.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	9.39571E-17	1.22438E-16	2.15639E-14	4.89100E-15	1.91789E-14	-6.77636E-13
e	1.22438E-16	1.47568E-15	1.16546E-13	1.29249E-14	4.78198E-13	-1.40037E-12
i	2.15639E-14	1.16546E-13	1.88055E-10	-1.20757E-11	1.69622E-11	-1.69754E-10
Ω	4.89100E-15	1.29249E-14	-1.20757E-11	1.63295E-11	-1.38418E-11	-3.10055E-11
ω	1.91789E-14	4.78198E-13	1.69622E-11	-1.38418E-11	4.96099E-10	-6.09436E-10
M	-6.77636E-13	-1.40037E-12	-1.69754E-10	-3.10055E-11	-6.09436E-10	5.35032E-9

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

S/Sr

Unit

Source

[1]

Taxonomy (all)

Value

S/Sr

Unit

Source

[1]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

18.073

Unit

mag

Source

[2]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[2]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.146

Unit

Source

[3]

Diameter

Value

874

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.) DeMeo, F.E. et al. (2014) Icarus 227, 112-122. (Mars encounters cause fresh surfaces on some near-Earth asteroids) (contains taxonomic classification of 249 NEAs)
[2]	ESA Aegis	ESA orbit determination and impact monitoring system
[3]	EARN	1.) Mainzer, A. et al. (2011) ApJ 743, 156. (NEOWISE Observations of Near-Earth Objects: Preliminary Results) (albedo and diameters of 428 NEOs) 2.) Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; et al. (2011) Astrophys. J. 741, A90. See also Grav 2012b and Masiero 2012. 3.) Mainzer, A.; Grav, T.; Masiero, J.; Bauer, J.; et al. (2012) Astrophys. J. Let. 760, L12.
[4]	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

2079

Unit

Source

[1]

Unobserved

Value

4062

Unit

Source

[1]

Normalized RMS of residuals

Value

0.344825

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2009-01-02.54066

Unit

Source

[2]

Last Observation

Value

2014-09-12.15634

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

1026 (5)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2012-02-21

Unit

Source

[3]

Last Observation

Value

2012-02-21

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 365071 2009AV 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	1965-08-22 23:43	< 1 min	0.0921112	0.0921077	0.0000012
EARTH	1966-02-17 12:51	< 1 min	0.0587397	0.0587328	0.0000023
EARTH	1988-08-22 16:52	< 1 min	0.0950803	0.0950771	0.0000010
EARTH	1989-02-17 02:38	< 1 min	0.0657934	0.0657879	0.0000018
EARTH	2011-08-22 15:21	< 1 s	0.1277965	0.1277963	0.0000001
EARTH	2012-02-16 03:11	< 1 s	0.1154185	0.1154184	0.0000000
EARTH	2012-08-26 11:30	< 1 s	0.1614796	0.1614793	0.0000001
EARTH	2013-02-25 01:16	< 1 s	0.1533199	0.1533196	0.0000001
EARTH	2034-08-21 07:08	< 1 min	0.1776252	0.1776205	0.0000016
EARTH	2035-02-13 18:00	< 1 min	0.1774424	0.1774367	0.0000019
EARTH	2035-08-26 06:58	< 1 min	0.1137685	0.1137644	0.0000014
EARTH	2036-02-23 13:58	< 1 min	0.0916380	0.0916322	0.0000019
EARTH	2058-08-25 12:11	< 1 min	0.0917635	0.0917595	0.0000013
EARTH	2059-02-22 02:44	< 1 min	0.0571103	0.0571030	0.0000024
EARTH	2080-08-20 13:10	< 1 min	0.1979316	0.1979287	0.0000010
EARTH	2081-02-12 15:49	< 1 min	0.1998649	0.1998616	0.0000011
EARTH	2081-08-25 15:15	< 1 min	0.1011761	0.1011742	0.0000006
EARTH	2082-02-22 14:13	< 1 min	0.0733012	0.0732982	0.0000010
EARTH	2103-08-23 10:43	< 1 min	0.1522261	0.1522234	0.0000009
EARTH	2104-02-16 11:31	< 1 min	0.1445085	0.1445050	0.0000012
EARTH	2104-08-27 09:55	< 1 min	0.1410275	0.1410246	0.0000010
EARTH	2105-02-25 13:11	< 1 min	0.1293170	0.1293133	0.0000012

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
35.40226162	47.83758888	0.02139458	MINIMUM
220.89661583	229.38768830	0.07678390	MINIMUM
309.50482322	316.97946642	0.76692090	SADDLE
126.48737767	140.52049478	0.81482198	SADDLE
315.84366045	146.36404040	1.83294531	SADDLE
117.26615199	307.68448079	1.89519502	SADDLE
44.04937493	234.15169903	1.98104374	MAXIMUM
212.38676271	43.71855637	2.07965943	MAXIMUM

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MOID Plots

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