Asteroids

175706 1996FG3 help

Last update: 2026-07-30 09:40 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.685

Aphelion (Q)

1.424

Eccentricity (e)

0.350

Inclination (i)

2.0

deg

Orbit period (P)

395.7

Earth MOID

0.02809

U parameter

0.0

A₂

-12.4

10^-15au/days²

Next Earth close approach

Date

2035-05-05

Nominal distance (from Earth center)

0.10605

15864760

Maximum Brightness

16.4

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

18.3

mag

Diameter

1830

Taxonomic type

C/Ch

Rotation period (T)

3.584

Discovery Information

Discovery Date

1996-03-24

Observatory

Siding Spring Observatory

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

1.054889

1-sigma variation

8.986E-10

Unit

Eccentricity (e)

Value

0.350194

1-sigma variation

6.015E-9

Unit

Inclination (i)

Value

1.9726

1-sigma variation

1.073E-6

Unit

Long. of Ascending Node (Ω)

Value

299.4691

1-sigma variation

3.939E-5

Unit

Arg. of Perihelion (ω)

Value

24.0760

1-sigma variation

3.918E-5

Unit

Mean Anomaly (M)

Value

218.56548

1-sigma variation

2.018E-6

Unit

Perihelion distance

Value

0.685473

1-sigma variation

Unit

Aphelion distance

Value

1.424304

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.315012

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.376677

1-sigma variation

Unit

MOID

Value

0.028095

1-sigma variation

Unit

Orbit Period

Value

395.7385

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

A₂

Value

-12.44230

1-sigma variation

1.26187

Unit

10^-15au/days²

Covariance Matrix

	a	e	i	Ω	ω	M	A₂
a	8.07412E-19	-4.69564E-19	-8.70544E-17	2.32588E-14	-2.31864E-14	-1.74519E-16	5.18920E-11
e	-4.69564E-19	3.61798E-17	-3.58817E-15	-4.12646E-15	2.17914E-15	7.45863E-15	-2.15948E-9
i	-8.70544E-17	-3.58817E-15	1.15070E-12	-9.40249E-12	9.28997E-12	-3.38344E-13	1.14899E-7
Ω	2.32588E-14	-4.12646E-15	-9.40249E-12	1.55137E-9	-1.54311E-9	-3.43188E-11	-6.42223E-6
ω	-2.31864E-14	2.17914E-15	9.28997E-12	-1.54311E-9	1.53515E-9	3.35729E-11	6.55834E-6
M	-1.74519E-16	7.45863E-15	-3.38344E-13	-3.43188E-11	3.35729E-11	4.07267E-12	-1.59162E-6
A₂	5.18920E-11	-2.15948E-9	1.14899E-7	-6.42223E-6	6.55834E-6	-1.59162E-6	1.59232E0

Date of computation: 2026-07-30 09:40 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

3.584

3.594

Unit

Source

[1]

[5]

Quality

Value

3,B

Unit

Source

[5]

Amplitude

Value

0.15

0.08

Unit

mag

Source

[1]

[5]

Rotation Direction

Value

Unit

Source

[-]

Spinvector L

Value

188

Unit

Source

[1]

Spinvector B

Value

-7

Unit

Source

[1]

Taxonomy
Taxonomy (all)

Taxonomy

Value

Unit

Source

Taxonomy

Value

C/Ch

Unit

Source

[3]

Taxonomy (all)

Value

Xc;B;Ch

Unit

Source

[4]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

18.329

17.833

Unit

mag

Source

[6]

[7]

Slope Parameter (G)

Value

-0.041

0.15**

Unit

Source

[7]

[6]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.039

Unit

Source

[9]

Diameter

Value

1830

Unit

Source

[8]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

0.7

0.38

Unit

B-V

V-R

Source

[10]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Visual S

Radar R

Unit

Source

[11]

[12]

Satellites

Satellites

Value

Unit

Source

Satellites

Value

Binary Child 1

Unit

Source

[13]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Lowell Observatory Near-Earth Asteroid Photometric Survey (NEAPS): Paper 4. Skiff, Brian A et al.
[2]	EARN	1.) Scheirich P. & P. Pravec (2009) Icarus 200, 531-547. (Modeling of lightcurves of binary asteroids) (175706,65803, 66391,185851,66063) 2.) Yu, L. et al. (2014) MNRAS 439, 3357-3370. (Shape, Thermal and Surface Properties determination of a Candidate Spacecraft Target Asteroid (175706) 1996 FG3)
[3]	EARN	1.) Thomas, C.A. et al. (2014) Icarus 228, 217-246. (Physical characterization of Warm Spitzer-observed near-Earth objects)
[4]	EARN	1.) Perna, D. et al. (2013) Astron. Astrophys. 555, A62. (Ultraviolet to near-infrared spectroscopy of the potentially hazardous, low delta-V asteroid (175706) 1996 FG3) 2.) Walsh, K.J. et al. (2012) Astrophys. J. 748, 104. (PHYSICAL CHARACTERIZATION AND ORIGIN OF BINARY NEAR-EARTH ASTEROID (175706) 1996 FG3) 3.) Thomas, C.A. et al. (2011) Astron. J. 142, 85. (ExploreNEOs. V. AVERAGE ALBEDO BY TAXONOMIC COMPLEX IN THE NEAR-EARTH ASTEROID POPULATION) (new albedos data for 118 NEOs) 4.) Somers, J.M. et al. (2010) DPS 42, 1316. (abstract) (Optical Characterization Of Planetary Radar Targets, Low-deltaV, And Potentially Hazardous Asteroids: Results From 2009-2010) 5.) Bus, S.J. & Binzel, R.P. (2002) Icarus 158,106-145. (Phase II of the Small Main-Belt Asteroid Spectrographic Survey: A Feature-Based Taxonomy.) 6.) Whiteley, R.J. (2001) PhD. Thesis, University of Hawaii. (A Compositional and Dynamical Survey of the Near-Earth Asteroids) 7.) Thomas, C.A. et al. (2014) Icarus 228, 217-246. (Physical characterization of Warm Spitzer-observed near-Earth objects)
[5]	EARN	1.) Mottola, S. & F. Lahulla (1998) I.A.U. Circ. HREF="http://www.cbat.eps.harvard.edu/iauc/07000/07069.html"> 7069. (1996 FG3 - complex rotation) 2.) Pravec, P. et al. (1998) I.A.U. Circ. HREF="http://www.cbat.eps.harvard.edu/iauc/07000/07074.html"> 7074. (1996 FG3 - binary asteroid) 3.) Pravec, P. et al. (2000) Icarus 146, 190-203. (Two-period lightcurves of 1996 FG3, 1998 PG and (5407) 1992 AX: One probable and two possible binary asteroids.) 4.) Mottola, S. & F. Lahulla (2000) Icarus 146, 556-567. (Mutual eclipse events in asteroidal binary system 1996 FG3: observations and a numerical model) 5.) Pravec, P. et al. (2006) Icarus 181, 63-93. (Photometric survey of binary near-Earth asteroids) 6.) Yu, L. et al. (2014) MNRAS 439, 3357-3370. (Shape, Thermal and Surface Properties determination of a Candidate Spacecraft Target Asteroid (175706) 1996 FG3) 7.) 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) 8.) Pravec, P. et al (2016) Icarus 267,267-295. (Binary asteroid population. 3. Secondary rotations and elongations) (..,..)
[6]	ESA Aegis	ESA orbit determination and impact monitoring system
[7]	EARN	1.) Wolters, S.D. et al. (2011) MNRAS 418, 1246-1257. (Physical Characterisation of low delta-V asteroid (175706) 1996 FG3) 2.) Pravec, P. et al. (2012) Icarus 221, 365-387 (Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations)
[8]	EARN	1.) Walsh, K.J. et al. (2012) Astrophys. J. 748, 104. (PHYSICAL CHARACTERIZATION AND ORIGIN OF BINARY NEAR-EARTH ASTEROID (175706) 1996 FG3) 2.) Wolters, S.D. et al. (2011) MNRAS 418, 1246-1257. (Physical Characterisation of low delta-V asteroid (175706) 1996 FG3) 3.) Mueller, M. et al. (2011) Astron. J. 141, 109. (ExploreNEOs. III. PHYSICAL CHARACTERIZATION OF 65 POTENTIAL SPACECRAFT TARGET ASTEROIDS) 4.) Binzel, R.P. et al. (2002) in "Asteroids III" (Eds. W.F.Bottke et al.), Univ.Ariz.Press, Tucson, USA, pp. 255-271. (Physical Properties of NEOs) 5.) Yu, L. et al. (2014) MNRAS 439, 3357-3370. (Shape, Thermal and Surface Properties determination of a Candidate Spacecraft Target Asteroid (175706) 1996 FG3) 6.) Mueller, M. et al. (2011) Astron. J. 141, 109. (ExploreNEOs. III. PHYSICAL CHARACTERIZATION OF 65 POTENTIAL SPACECRAFT TARGET ASTEROIDS) 7.) Mainzer, A.; Grav, T.; Masiero, J.; Bauer, J.; et al. (2012) Astrophys. J. Let. 760, L12.
[9]	EARN	1.) Walsh, K.J. et al. (2012) Astrophys. J. 748, 104. (PHYSICAL CHARACTERIZATION AND ORIGIN OF BINARY NEAR-EARTH ASTEROID (175706) 1996 FG3) 2.) Wolters, S.D. et al. (2011) MNRAS 418, 1246-1257. (Physical Characterisation of low delta-V asteroid (175706) 1996 FG3) 3.) Thomas, C.A. et al. (2011) Astron. J. 142, 85. (ExploreNEOs. V. AVERAGE ALBEDO BY TAXONOMIC COMPLEX IN THE NEAR-EARTH ASTEROID POPULATION) (new albedos data for 118 NEOs) 4.) Yu, L. et al. (2014) MNRAS 439, 3357-3370. (Shape, Thermal and Surface Properties determination of a Candidate Spacecraft Target Asteroid (175706) 1996 FG3) 5.) Mueller, M. et al. (2011) Astron. J. 141, 109. (ExploreNEOs. III. PHYSICAL CHARACTERIZATION OF 65 POTENTIAL SPACECRAFT TARGET ASTEROIDS) 6.) Mainzer, A.; Grav, T.; Masiero, J.; Bauer, J.; et al. (2012) Astrophys. J. Let. 760, L12.
[10]	EARN	1.) Pravec, P. et al. (2000) Icarus 146, 190-203. (Two-period lightcurves of 1996 FG3, 1998 PG and (5407) 1992 AX: One probable and two possible binary asteroids.)
[11]	EARN	1.) Binzel, R.P. et al. (2001) Icarus 151,139-149. (Spectral Properties of Near-Earth Objects: Palomar and IRTF Results for 48 Objects Including Spacecraft Targets (9969) Braille and (10302) 1989 ML) 2.) Perna, D. et al. (2013) Astron. Astrophys. 555, A62. (Ultraviolet to near-infrared spectroscopy of the potentially hazardous, low delta-V asteroid (175706) 1996 FG3) 3.) deLeon, J. et al. (2013) Astron. Astophys. 556, A33. (Additional spectra of asteroid 1996 FG3, backup target of the ESA MarcoPolo-R mission)
[12]	EARN	1.) href="http://echo.jpl.nasa.gov/asteroids/index.html">JPL's NEO Radar Detection Program Webpage 2.) Benner, L.A.M. et al. (2012) ACM2012, 6403. (ARECIBO AND GOLDSTONE RADAR OBSERVATIONS OF BINARY NEAR-EARTH ASTEROID AND MARCO POLO-R MISSION TARGET (175706) 1996 FG3) 3.) Benner, L.A.M. et al. (2012) DPS 44 102-06. (abstract) (Arecibo and Goldstone Radar Observations of Binary Near-Earth Asteroid and Marco Polo-R Mission Target (175706) 1996 FG3)
[13]	EARN	Earth Asteroids Research Node: https://earn.dlr.de

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

14691

Unit

Source

[1]

Unobserved

Value

151

Unit

Source

[1]

Normalized RMS of residuals

Value

0.401908

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

1985-12-17.33646

Unit

Source

[2]

Last Observation

Value

2026-03-08.256914

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

3137 (10)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2011-11-06

Unit

Source

[3]

Last Observation

Value

2011-12-17

Unit

Source

[3]

Delay (Discarded)

Value

6 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

1 (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

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Final Date: *

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Close Approaches for 175706 1996FG3 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	1956-04-22 11:23	< 1 min	0.1833276	0.1833259	0.0000006
EARTH	1959-11-30 22:48	< 1 min	0.1162947	0.1162941	0.0000002
VENUS	1965-02-06 09:50	< 1 min	0.0168805	0.0168797	0.0000003
EARTH	1969-04-22 18:39	< 1 min	0.1851505	0.1851492	0.0000004
EARTH	1972-11-28 05:48	< 1 min	0.0615279	0.0615266	0.0000004
EARTH	1985-11-26 15:20	< 1 s	0.0293135	0.0293134	0.0000000
EARTH	1998-11-25 18:25	< 1 s	0.0384492	0.0384491	0.0000000
EARTH	2009-05-06 09:08	< 1 s	0.1560835	0.1560834	0.0000000
EARTH	2011-11-23 15:42	< 1 s	0.1014239	0.1014239	0.0000000
EARTH	2022-05-03 21:51	< 1 s	0.0783159	0.0783158	0.0000000
VENUS	2023-07-24 21:23	< 1 s	0.0264496	0.0264495	0.0000000
EARTH	2024-11-25 16:27	< 1 s	0.1800218	0.1800216	0.0000000
EARTH	2035-05-05 10:14	< 1 s	0.1060494	0.1060491	0.0000001
EARTH	2037-11-22 04:56	< 1 s	0.1287644	0.1287641	0.0000001
VENUS	2046-05-02 19:46	< 1 min	0.0395073	0.0395069	0.0000001
EARTH	2048-05-05 22:07	< 1 s	0.1747071	0.1747067	0.0000001
EARTH	2050-11-24 14:28	< 1 s	0.0564631	0.0564628	0.0000001
EARTH	2063-11-28 23:58	< 1 s	0.0616333	0.0616329	0.0000001
EARTH	2073-04-24 14:47	< 1 s	0.1543229	0.1543227	0.0000001
EARTH	2076-12-02 11:21	< 1 s	0.1558156	0.1558155	0.0000000
EARTH	2086-04-29 11:17	< 1 s	0.0569716	0.0569713	0.0000001
VENUS	2087-07-22 23:15	< 1 min	0.0432095	0.0432092	0.0000001
EARTH	2099-05-04 03:08	< 1 s	0.0661142	0.0661140	0.0000001
EARTH	2101-11-24 01:21	< 1 s	0.1592874	0.1592872	0.0000001
VENUS	2105-12-24 04:43	< 1 s	0.0284210	0.0284207	0.0000001
EARTH	2112-05-06 22:38	< 1 s	0.1308214	0.1308212	0.0000001
EARTH	2114-11-24 06:19	< 1 s	0.1156817	0.1156813	0.0000001
EARTH	2125-05-07 13:26	< 1 s	0.1475680	0.1475671	0.0000003

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
79.63666849	320.24238436	0.02809451	MINIMUM
277.58409608	115.05736952	0.03411843	MINIMUM
357.91745641	216.97249148	0.32796454	SADDLE
179.05929426	38.06327322	0.43751839	SADDLE
357.83268599	36.82521481	1.67242028	SADDLE
178.85613574	217.91292595	2.43741325	MAXIMUM

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MOID Plots

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