Asteroids

2010FX9 help

Last update: 2026-07-30 11:21 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.716

Aphelion (Q)

1.547

Eccentricity (e)

0.367

Inclination (i)

3.8

deg

Orbit period (P)

439.6

Earth MOID

0.01349

U parameter

1.2

A₂

-242.6

10^-15au/days²

Next Earth close approach

Date

2026-09-14

Nominal distance (from Earth center)

0.02401

3592315

Maximum Brightness

19.6

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

24.1

mag

Diameter

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2010-03-21

Observatory

University of Arizona Catalina Sky 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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.131435

1-sigma variation

3.008E-8

Unit

Eccentricity (e)

Value

0.366903

1-sigma variation

0.000001

Unit

Inclination (i)

Value

3.7719

1-sigma variation

2.505E-5

Unit

Long. of Ascending Node (Ω)

Value

9.8143

1-sigma variation

4.259E-5

Unit

Arg. of Perihelion (ω)

Value

75.3867

1-sigma variation

0.0001

Unit

Mean Anomaly (M)

Value

228.56641

1-sigma variation

0.00002

Unit

Perihelion distance

Value

0.716308

1-sigma variation

Unit

Aphelion distance

Value

1.546563

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.104869

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.080152

1-sigma variation

Unit

MOID

Value

0.013485

1-sigma variation

Unit

Orbit Period

Value

439.5851

1-sigma variation

Unit

U parameter

Value

1.2

1-sigma variation

Unit

A₂

Value

-242.55937

1-sigma variation

45.13000

Unit

10^-15au/days²

Covariance Matrix

	a	e	i	Ω	ω	M	A₂
a	9.05075E-16	2.99933E-14	3.45276E-13	-2.56704E-13	-3.32902E-12	-4.66991E-13	1.35270E-6
e	2.99933E-14	1.27050E-12	2.99389E-12	2.00642E-12	-1.47738E-10	-1.22732E-11	4.36117E-5
i	3.45276E-13	2.99389E-12	6.27387E-10	-9.44722E-10	4.82153E-10	-2.36798E-10	5.12928E-4
Ω	-2.56704E-13	2.00642E-12	-9.44722E-10	1.81405E-9	-2.02715E-9	2.01785E-10	-3.23928E-4
ω	-3.32902E-12	-1.47738E-10	4.82153E-10	-2.02715E-9	1.91300E-8	1.32166E-9	-4.93440E-3
M	-4.66991E-13	-1.22732E-11	-2.36798E-10	2.01785E-10	1.32166E-9	3.09832E-10	-7.14068E-4
A₂	1.35270E-6	4.36117E-5	5.12928E-4	-3.23928E-4	-4.93440E-3	-7.14068E-4	2.03672E3

Date of computation: 2026-07-30 11:21 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

24.08

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.425

Unit

Source

[2]

Diameter

Value

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]	EARN	1.) Mainzer, A. et al. (2014) Astrophys. J. 784, 110. (The Population of Tiny Near-Earth Objects Observed by NEOWISE) 2.) Mainzer, A.; Bauer, J.; Grav, T.; Masiero, J.; et al. (2014) Astrophys. J. 784, A110.

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

4390

Unit

Source

[1]

Unobserved

Value

1608

Unit

Source

[1]

Normalized RMS of residuals

Value

0.38324

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2010-03-21.43705

Unit

Source

[2]

Last Observation

Value

2022-03-28.237886

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

101 (1)

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

Filters

Initial Date: *

Final Date: *

Normalised Only accepted

Max residual (arcsec):

* - these fields are required

Plot

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 2010FX9 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
EARTH	1955-09-19 21:14	2.3	0.0801304	0.0800629	0.0000225
EARTH	1961-10-09 12:32	8.5	0.1716478	0.1715991	0.0000162
VENUS	1971-07-07 11:44	4.6	0.0457403	0.0457329	0.0000024
MARS	1977-03-07 06:17	1.2	0.0498855	0.0498737	0.0000039
VENUS	1998-01-15 11:34	< 1 min	0.0344283	0.0344253	0.0000010
EARTH	2004-03-09 13:04	< 1 min	0.1250954	0.1250935	0.0000006
EARTH	2010-03-17 23:06	< 1 min	0.0230285	0.0230282	0.0000001
EARTH	2016-03-19 11:37	< 1 min	0.0237024	0.0237023	0.0000001
EARTH	2020-09-07 15:48	< 1 s	0.1250077	0.1249927	0.0000050
EARTH	2022-03-25 08:53	< 1 s	0.1275904	0.1275898	0.0000002
VENUS	2025-08-30 15:39	< 1 min	0.0436352	0.0436340	0.0000004
EARTH	2026-09-14 03:57	< 1 min	0.0240131	0.0240064	0.0000022
EARTH	2032-09-16 09:41	1.1	0.0384946	0.0384547	0.0000133
EARTH	2038-09-25 08:04	2.9	0.1229488	0.1228948	0.0000180
VENUS	2052-03-05 05:41	4.5	0.0320005	0.0319793	0.0000071
EARTH	2075-03-14 20:04	4.3	0.0813240	0.0811888	0.0000450
VENUS	2081-01-29 21:18	13.2	0.0282654	0.0282589	0.0000022
EARTH	2081-03-21 04:30	2.6	0.0423736	0.0422688	0.0000349
EARTH	2085-09-12 09:19	5.3	0.0547015	0.0544952	0.0000688
EARTH	2091-09-21 20:44	6.7	0.0872765	0.0871056	0.0000570
EARTH	2122-03-13 01:59	4.9	0.1145921	0.1144564	0.0000452

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
71.18383563	72.79312177	0.01348510	MINIMUM
288.08519650	248.06587267	0.02103615	MINIMUM
359.46416355	340.42038590	0.27340315	SADDLE
179.76640916	160.39828729	0.53665576	SADDLE
358.90087217	159.62303195	1.73130632	SADDLE
179.41486003	340.16276565	2.52979371	MAXIMUM

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MOID Plots

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