Asteroids

2013FM9 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.554

Aphelion (Q)

1.060

Eccentricity (e)

0.313

Inclination (i)

14.9

deg

Orbit period (P)

264.9

Earth MOID

0.04907

U parameter

8.3

Next Earth close approach

Date

2029-04-08

Nominal distance (from Earth center)

0.14212

21261123

Maximum Brightness

22.2

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

40 - 100*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2013-03-20

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

0.807215

1-sigma variation

0.000368

Unit

Eccentricity (e)

Value

0.313397

1-sigma variation

0.000957

Unit

Inclination (i)

Value

14.8867

1-sigma variation

0.0737

Unit

Long. of Ascending Node (Ω)

Value

177.1868

1-sigma variation

0.0100

Unit

Arg. of Perihelion (ω)

Value

192.4049

1-sigma variation

0.0199

Unit

Mean Anomaly (M)

Value

326.95604

1-sigma variation

4.25452

Unit

Perihelion distance

Value

0.554237

1-sigma variation

Unit

Aphelion distance

Value

1.060194

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.052669

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.447453

1-sigma variation

Unit

MOID

Value

0.049067

1-sigma variation

Unit

Orbit Period

Value

264.9004

1-sigma variation

Unit

U parameter

Value

8.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.35277E-7	-3.52099E-7	-2.70795E-5	3.68681E-6	-7.29296E-6	-1.56481E-3
e	-3.52099E-7	9.16601E-7	7.05200E-5	-9.60236E-6	1.89619E-5	4.07292E-3
i	-2.70795E-5	7.05200E-5	5.42964E-3	-7.39525E-4	1.45499E-3	3.13249E-1
Ω	3.68681E-6	-9.60236E-6	-7.39525E-4	1.00736E-4	-1.97920E-4	-4.26483E-2
ω	-7.29296E-6	1.89619E-5	1.45499E-3	-1.97920E-4	3.96162E-4	8.43563E-2
M	-1.56481E-3	4.07292E-3	3.13249E-1	-4.26483E-2	8.43563E-2	1.81009E1

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

23.961

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

40 - 100*

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

Unit

Source

[-]

Download this part as:

Sources

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

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

Unit

Source

[1]

Unobserved

Value

4556

Unit

Source

[1]

Normalized RMS of residuals

Value

0.26977

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2013-03-20.1189

Unit

Source

[2]

Last Observation

Value

2013-03-29.09355

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

25 (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

Unit

Source

[-]

Last Observation

Value

Unit

Source

[-]

Delay (Discarded)

Value

0 (0)

Unit

Source

[-]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[-]

Total Radar Observations (Discarded)

Value

0 (0)

Unit

Source

[-]

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

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 2013FM9 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	1955-03-27 02:08	> 1 w	0.0865727	0.0687804	0.0794922
EARTH	1963-04-10 18:49	> 1 w	0.1497099	0.1132601	0.0925268
EARTH	1968-03-03 07:19	1204.4	0.1678921	0.0731239	0.1390724
EARTH	1976-03-07 16:05	> 1 w	0.0702074	0.0549480	0.0707476
EARTH	1984-03-18 03:18	> 1 w	0.0588812	0.0533976	0.0314023
EARTH	1992-04-01 23:15	> 1 w	0.1121101	0.0873713	0.0361838
EARTH	2000-04-14 15:45	> 1 d	0.1828448	0.1321257	0.0309790
EARTH	2005-03-04 14:21	1098.5	0.1202087	0.0653603	0.0251490
EARTH	2013-03-12 01:37	< 1 min	0.0509740	0.0503455	0.0002095
EARTH	2021-03-24 22:13	> 1 d	0.0809145	0.0640010	0.0142372
EARTH	2029-04-08 20:45	> 1 d	0.1421218	0.1069503	0.0334412
EARTH	2034-03-03 22:09	218.5	0.1810325	0.0752819	0.0724526
EARTH	2042-03-07 08:54	> 1 d	0.0781963	0.0564558	0.0637679
EARTH	2050-03-17 02:46	> 1 w	0.0546616	0.0513575	0.0309569
EARTH	2058-03-31 16:42	> 1 w	0.1056192	0.0813741	0.0733097
EARTH	2066-04-14 07:06	> 1 w	0.1748880	0.1261419	0.1094180
EARTH	2071-03-04 20:47	> 1 d	0.1308987	0.0666799	0.1587511
EARTH	2079-03-11 12:32	> 1 w	0.0528733	0.0504526	0.0484844
EARTH	2087-03-23 21:18	> 1 mo	0.0755843	0.0611399	0.1087208
EARTH	2095-04-07 22:09	> 1 w	0.1354036	0.1032944	0.1550964
EARTH	2100-03-04 13:25	992.3	0.1946711	0.0757722	0.2961280
EARTH	2108-03-07 04:02	> 1 w	0.0874423	0.0577928	0.2345250
EARTH	2116-03-16 04:46	> 1 mo	0.0514670	0.0499745	0.0597308
EARTH	2124-03-30 11:38	> 1 mo	0.0994744	0.0767396	0.1849839

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
156.55087705	69.60783700	0.04976488	MINIMUM
0.97598081	269.95855819	0.44814030	SADDLE
355.96400819	83.22644902	1.55237736	SADDLE
176.47749952	263.60899381	2.06075968	MAXIMUM

Download:

MOID Plots

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