Asteroids

503911 2002FD6 help

Last update: 2024-05-09 16:35 UTC

Orbital Properties

Epoch

60400.0

MJD

Orbit type

Apollo

Perihelion (q)

0.811

Aphelion (Q)

1.655

Eccentricity (e)

0.342

Inclination (i)

10.1

deg

Orbit period (P)

500.2

Earth MOID

0.00479

U parameter

0.4

Next Earth close approach

Date

2028-04-14

Nominal distance (from Earth center)

0.09926

14849283

Maximum Brightness

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

22.6

mag

Diameter

80 - 180*

Taxonomic type

Rotation period (T)

2.799

Discovery Information

Discovery Date

2002-03-21

Observatory

Lincoln Laboratory ETS, New Mexico

Orbit Visualiser

Click the button to start Orbit Visualiser

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

60400.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.233213

1-sigma variation

5.563E-9

Unit

Eccentricity (e)

Value

0.342068

1-sigma variation

5.750E-8

Unit

Inclination (i)

Value

10.0643

1-sigma variation

1.312E-5

Unit

Long. of Ascending Node (Ω)

Value

15.1658

1-sigma variation

2.464E-6

Unit

Arg. of Perihelion (ω)

Value

256.8760

1-sigma variation

9.788E-6

Unit

Mean Anomaly (M)

Value

339.38231

1-sigma variation

0.00006

Unit

Perihelion distance

Value

0.811370

1-sigma variation

Unit

Aphelion distance

Value

1.655055

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.182157

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.010122

1-sigma variation

Unit

MOID

Value

0.004791

1-sigma variation

Unit

Orbit Period

Value

500.2135

1-sigma variation

Unit

U parameter

Value

0.4

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.09457E-17	2.78564E-16	-2.55762E-14	1.03471E-17	4.35739E-14	-3.08172E-13
e	2.78564E-16	3.30627E-15	-2.78641E-13	-2.71827E-15	5.39334E-13	-2.74970E-12
i	-2.55762E-14	-2.78641E-13	1.72236E-10	-1.60182E-11	-2.90892E-11	2.51357E-10
Ω	1.03471E-17	-2.71827E-15	-1.60182E-11	6.06962E-12	-7.16563E-12	8.78702E-13
ω	4.35739E-14	5.39334E-13	-2.90892E-11	-7.16563E-12	9.58084E-11	-4.30635E-10
M	-3.08172E-13	-2.74970E-12	2.51357E-10	8.78702E-13	-4.30635E-10	3.07000E-9

Date of computation: 2024-04-23 10:08 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

2.799

Unit

Source

[1]

Quality

Value

Unit

Source

[1]

Amplitude

Value

0.2

Unit

mag

Source

[1]

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

22.51

22.64

Unit

mag

Source

[2]

[3]

Slope Parameter (G)

Value

0.24

0.15**

Unit

mag

Source

[2]

[3]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[4]

Diameter

Value

80 - 180*

Unit

Source

[4]

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

[5]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Petr Pravec's Ondrejov NEO Photometric Program Webpage "Prepublished Periods" 2.) R. Behrend Courbes des lumiere, Observatoire de Geneve website 3.) href="http://echo.jpl.nasa.gov/~lance/radar.nea.periods.html"> L.Benner, JPL Radar website
[2]	EARN	1.) Pravec, P. et al. (2012) Icarus 221, 365-387 (Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations)
[3]	ESA ODIM	ESA orbit determination and impact monitoring system
[4]	Estimation	Estimated from absolute magnitude
[5]	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

5694

Unit

Source

[1]

Unobserved

Value

2391

Unit

Source

[1]

Normalized RMS of residuals

Value

0.40479

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2002-03-21.37386

Unit

Source

[2]

Last Observation

Value

2017-10-22.4945

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

594 (11)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2002-04-02

Unit

Source

[3]

Last Observation

Value

2002-04-04

Unit

Source

[3]

Delay (Discarded)

Value

4 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

2 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

6 (0)

Unit

Source

[1]

Note: The ASCII file is in a format suitable for Orbfit input.

Sources

No.	Name	Additional
[1]	ESA ODIM	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 503911 2002FD6 from 1950 to 2124

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possibile distance in au	Distance uncert. in au
EARTH	1951-04-03 05:41	< 1 min	0.0546640	0.0546590	0.0000017
EARTH	1955-09-16 13:05	< 1 min	0.0794581	0.0794563	0.0000006
EARTH	1962-04-13 07:31	< 1 min	0.0838941	0.0838854	0.0000029
EARTH	1966-09-23 00:29	< 1 min	0.1905863	0.1905776	0.0000029
EARTH	1991-03-27 14:16	< 1 min	0.1864935	0.1864902	0.0000011
EARTH	1995-09-11 17:34	< 1 min	0.1179418	0.1179400	0.0000006
EARTH	2002-04-06 03:44	< 1 s	0.0081685	0.0081685	0.0000000
EARTH	2006-09-12 02:44	< 1 min	0.1219375	0.1219371	0.0000001
EARTH	2028-04-14 15:57	< 1 min	0.0992613	0.0992570	0.0000014
EARTH	2032-09-17 01:41	< 1 min	0.0747516	0.0747509	0.0000002
EARTH	2039-03-29 21:48	< 1 min	0.1470556	0.1470507	0.0000017
EARTH	2065-04-09 06:17	< 1 min	0.0375378	0.0375329	0.0000016
EARTH	2069-09-16 10:51	< 1 s	0.0723903	0.0723900	0.0000001
EARTH	2076-03-31 15:42	< 1 min	0.1030051	0.1029955	0.0000032
EARTH	2080-09-08 11:52	< 1 min	0.1678017	0.1677888	0.0000043
EARTH	2113-04-12 20:16	1.5	0.0663536	0.0663157	0.0000126
EARTH	2117-09-19 10:20	< 1 min	0.0800362	0.0800236	0.0000042
EARTH	2124-04-05 12:22	< 1 min	0.0389893	0.0389776	0.0000039

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