Asteroids

410777 2009FD help

Last update: 2026-03-17 23:26 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.590

Aphelion (Q)

1.738

Eccentricity (e)

0.493

Inclination (i)

3.1

deg

Orbit period (P)

458.7

Earth MOID

0.00188

U parameter

0.3

A₂

74.5

10^-15au/days²

Next Earth close approach

Date

2058-03-22

Nominal distance (from Earth center)

0.13309

19910653

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

22.2

mag

Diameter

472

Taxonomic type

Rotation period (T)

5.870

Discovery Information

Discovery Date

2009-02-24

Observatory

OAM Observatory, La Sagra

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

1.164071

1-sigma variation

6.852E-9

Unit

Eccentricity (e)

Value

0.493022

1-sigma variation

8.741E-9

Unit

Inclination (i)

Value

3.1249

1-sigma variation

1.987E-6

Unit

Long. of Ascending Node (Ω)

Value

9.1531

1-sigma variation

1.145E-5

Unit

Arg. of Perihelion (ω)

Value

281.6870

1-sigma variation

1.140E-5

Unit

Mean Anomaly (M)

Value

207.34747

1-sigma variation

0.00002

Unit

Perihelion distance

Value

0.590159

1-sigma variation

Unit

Aphelion distance

Value

1.737983

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.200620

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.019037

1-sigma variation

Unit

MOID

Value

0.001876

1-sigma variation

Unit

Orbit Period

Value

458.7411

1-sigma variation

Unit

U parameter

Value

0.3

1-sigma variation

Unit

A₂

Value

74.50836

1-sigma variation

9.76666

Unit

10^-15au/days²

Covariance Matrix

	a	e	i	Ω	ω	M	A₂
a	4.69438E-17	-7.06174E-18	5.26325E-16	3.35391E-15	-1.23473E-15	-1.14224E-13	6.66961E-8
e	-7.06174E-18	7.64004E-17	5.09911E-15	-4.15759E-14	3.72434E-14	7.67095E-15	-1.59453E-8
i	5.26325E-16	5.09911E-15	3.94902E-12	1.59457E-12	-7.70041E-13	-1.37428E-12	7.48426E-7
Ω	3.35391E-15	-4.15759E-14	1.59457E-12	1.31199E-10	-1.30281E-10	-4.71222E-12	6.99664E-6
ω	-1.23473E-15	3.72434E-14	-7.70041E-13	-1.30281E-10	1.30075E-10	2.81720E-13	-3.51401E-6
M	-1.14224E-13	7.67095E-15	-1.37428E-12	-4.71222E-12	2.81720E-13	2.79410E-10	-1.61331E-4
A₂	6.66961E-8	-1.59453E-8	7.48426E-7	6.99664E-6	-3.51401E-6	-1.61331E-4	9.53876E1

Date of computation: 2026-03-17 23:26 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

5.870

Unit

Source

[3]

Quality

Value

2,B,R

Unit

Source

[3]

Amplitude

Value

0.24

Unit

mag

Source

[3]

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

[1]

Taxonomy (all)

Value

Unit

Source

[2]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

22.151

Unit

mag

Source

[4]

Slope Parameter (G)

Value

0.15**

Unit

Source

[4]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.01

Unit

Source

[5]

Diameter

Value

472

Unit

Source

[5]

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

[7]

Satellites

Satellites

Value

Unit

Source

Satellites

Value

Binary Child 1

Unit

Source

[2]

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Sources

No.	Name	Additional
[1]	EARN	1.) Michaël Marsset et al 2022 AJ 163 165
[2]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[3]	EARN	1.) Carbognani, A. (2011) MPB 38, 57-63. (LIGHTCURVES AND PERIODS OF EIGHTEEN NEAS AND MBAS) (..,68350,162900,2009FD, 2009NH) 2.) Koehn, B.W. et al. (2014) MPB 41, 286-300. (LOWELL OBSERVATORY NEAR-EARTH ASTEROID PHOTOMETRIC SURVEY (NEAPS) - 2009 JANUARY THROUGH 2009 JUNE) (433,1943,3554,5011,5604, 5620,5693,8566,14402,16834,22753,35107,52768,68350,85867, 138883,141052,143651,154244,161989,162385,163758,175706, 194386,203217,207945,208023,212546,256412,2001FE90,2004LV3, 2005BC,2005SG19,2008QT3,2008WL60,2009DE47,2009DO111,2009EP2, 2009FD,2009JM2) 3.) Naidu, S.P. et al. (2015) CBET HREF="http://www.cbat.eps.harvard.edu/iau/cbet/004100/CBET004191.txt">4121. (410777) 2009 FD (radar observations and binary asteroid detection)
[4]	ESA Aegis	ESA orbit determination and impact monitoring system
[5]	EARN	1.) Mainzer, A. et al. (2014) Astrophys. J. 784, 110. (The Population of Tiny Near-Earth Objects Observed by NEOWISE)
[6]	EARN	1.) Naidu, S.P. et al. (2015) CBET HREF="http://www.cbat.eps.harvard.edu/iau/cbet/004100/CBET004191.txt">4121. (410777) 2009 FD (radar observations and binary asteroid detection)
[7]	EARN	1.) href="http://echo.jpl.nasa.gov/asteroids/index.html">JPL's NEO Radar Detection Program Webpage 2.) Naidu, S.P. et al. (2015) CBET HREF="http://www.cbat.eps.harvard.edu/iau/cbet/004100/CBET004191.txt">4121. (410777) 2009 FD (radar observations and binary asteroid detection)

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

5523

Unit

Source

[1]

Unobserved

Value

741

Unit

Source

[1]

Normalized RMS of residuals

Value

0.441656

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2009-02-24.36493

Unit

Source

[2]

Last Observation

Value

2024-04-09.302161

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

525 (3)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2014-04-07

Unit

Source

[3]

Last Observation

Value

2015-11-04

Unit

Source

[3]

Delay (Discarded)

Value

5 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

3 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

8 (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 410777 2009FD 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	1966-03-28 11:22	< 1 min	0.0203487	0.0203435	0.0000017
EARTH	1967-10-27 12:30	< 1 min	0.0276731	0.0276700	0.0000011
EARTH	1990-04-03 18:47	< 1 min	0.1500505	0.1500417	0.0000029
EARTH	1991-11-03 00:19	< 1 min	0.1633481	0.1633400	0.0000027
EARTH	2009-03-27 15:35	< 1 s	0.0041728	0.0041728	0.0000000
EARTH	2010-10-24 14:56	< 1 s	0.0702475	0.0702474	0.0000000
VENUS	2011-12-24 00:55	< 1 s	0.0430082	0.0430081	0.0000000
EARTH	2014-04-01 09:09	< 1 s	0.1009308	0.1009307	0.0000000
EARTH	2015-10-29 10:14	< 1 s	0.0418853	0.0418853	0.0000000
EARTH	2020-11-03 17:23	< 1 s	0.1732119	0.1732115	0.0000001
EARTH	2058-03-22 14:13	< 1 min	0.1330945	0.1330868	0.0000026
EARTH	2059-10-18 20:14	< 1 min	0.1896995	0.1896916	0.0000026
EARTH	2063-03-29 06:01	< 1 min	0.0129797	0.0129715	0.0000027
EARTH	2064-10-26 09:39	< 1 min	0.0266232	0.0266185	0.0000016
EARTH	2097-03-25 04:32	5.6	0.0708388	0.0705669	0.0000907
EARTH	2098-10-22 19:17	5.6	0.1119479	0.1116903	0.0000859
EARTH	2102-04-03 17:36	3.8	0.1169015	0.1167089	0.0000642
EARTH	2103-11-01 12:03	3.3	0.0812677	0.0811188	0.0000496

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
286.69866954	84.66511854	0.00209874	MINIMUM
72.53334789	293.49141959	0.02280762	MINIMUM
359.40580007	188.77594617	0.42994238	SADDLE
179.76360508	9.30698882	0.75736819	SADDLE
359.51066365	8.95239560	1.57324598	SADDLE
179.85522947	189.35678688	2.75491959	MAXIMUM

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MOID Plots

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