Asteroids

143649 2003QQ47 help

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

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.882

Aphelion (Q)

1.288

Eccentricity (e)

0.187

Inclination (i)

62.1

deg

Orbit period (P)

413.0

Earth MOID

0.00300

U parameter

0.0

Next Earth close approach

Date

2031-03-19

Nominal distance (from Earth center)

0.08654

12945776

Maximum Brightness

14.8

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

17.4

mag

Diameter

900 - 2000*

Taxonomic type

Rotation period (T)

3.679

Discovery Information

Discovery Date

2003-08-24

Observatory

Lincoln Laboratory ETS, New Mexico

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

1.085313

1-sigma variation

1.154E-9

Unit

Eccentricity (e)

Value

0.186996

1-sigma variation

2.758E-8

Unit

Inclination (i)

Value

62.1013

1-sigma variation

1.436E-5

Unit

Long. of Ascending Node (Ω)

Value

0.9834

1-sigma variation

1.952E-6

Unit

Arg. of Perihelion (ω)

Value

104.9687

1-sigma variation

9.944E-6

Unit

Mean Anomaly (M)

Value

337.12011

1-sigma variation

0.00001

Unit

Perihelion distance

Value

0.882364

1-sigma variation

Unit

Aphelion distance

Value

1.288262

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.096747

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.003055

1-sigma variation

Unit

MOID

Value

0.003000

1-sigma variation

Unit

Orbit Period

Value

412.9818

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.33229E-18	-1.48789E-17	-5.19657E-16	1.36641E-16	-3.47283E-16	-4.46523E-15
e	-1.48789E-17	7.60680E-16	4.67781E-14	9.82362E-15	6.66833E-14	4.04554E-14
i	-5.19657E-16	4.67781E-14	2.06107E-10	1.05015E-11	3.62137E-11	-3.05526E-11
Ω	1.36641E-16	9.82362E-15	1.05015E-11	3.81009E-12	-3.65098E-13	-8.63923E-13
ω	-3.47283E-16	6.66833E-14	3.62137E-11	-3.65098E-13	9.88877E-11	-8.53610E-11
M	-4.46523E-15	4.04554E-14	-3.05526E-11	-8.63923E-13	-8.53610E-11	9.72119E-11

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

3.679

Unit

Source

[1]

Quality

Value

Unit

Source

[1]

Amplitude

Value

0.19-0.53

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

17.366

Unit

mag

Source

[2]

Slope Parameter (G)

Value

0.15**

Unit

Source

[2]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[3]

Diameter

Value

900 - 2000*

Unit

Source

[3]

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

[4]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Warner, B.D. (2014) MPB 41, 213-224. (NEAR-EARTH ASTEROID LIGHTCURVE ANALYSIS AT CS3-PALMER DIVIDE STATION: 2014 MARCH-JUNE) (38 NEA lightcurve data) 2.) Carbognani, A. (2014) MPB 41, 265-270. (ASTEROIDS LIGHTCURVES AT OAVDA: 2013 DECEMBER - 2014 JUNE) (21374, 53435,143649,242708,243566,251346,2013XY8,2014CU13)
[2]	ESA Aegis	ESA orbit determination and impact monitoring system
[3]	Estimation	Estimated from absolute magnitude
[4]	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

7198

Unit

Source

[1]

Unobserved

Value

1049

Unit

Source

[1]

Normalized RMS of residuals

Value

0.483937

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2003-08-24.39941

Unit

Source

[2]

Last Observation

Value

2023-05-09.738797

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

1211 (13)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2014-03-29

Unit

Source

[3]

Last Observation

Value

2014-03-29

Unit

Source

[3]

Delay (Discarded)

Value

0 (0)

Unit

Source

[-]

Doppler (Discarded)

Value

1 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

1 (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 143649 2003QQ47 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	1952-09-27 04:03	< 1 s	0.1566159	0.1566151	0.0000002
EARTH	1953-03-15 05:15	< 1 s	0.1786658	0.1786650	0.0000003
EARTH	1962-03-23 18:39	< 1 min	0.0599812	0.0599803	0.0000003
EARTH	1969-09-21 22:30	< 1 s	0.1315313	0.1315306	0.0000002
EARTH	1978-09-28 06:43	< 1 s	0.1730871	0.1730863	0.0000003
EARTH	1979-03-16 13:50	< 1 s	0.1566893	0.1566885	0.0000003
EARTH	1988-03-24 12:06	< 1 s	0.0903677	0.0903670	0.0000002
EARTH	1995-09-23 10:13	< 1 s	0.1123154	0.1123150	0.0000001
EARTH	2005-03-17 11:00	< 1 s	0.1196948	0.1196944	0.0000001
EARTH	2014-03-26 12:35	< 1 s	0.1283181	0.1283178	0.0000001
EARTH	2021-09-23 23:03	< 1 s	0.0985137	0.0985136	0.0000000
EARTH	2031-03-19 05:26	< 1 s	0.0865372	0.0865367	0.0000002
EARTH	2040-03-27 04:32	< 1 s	0.1564602	0.1564596	0.0000002
EARTH	2047-09-25 03:42	< 1 s	0.0947102	0.0947100	0.0000000
EARTH	2057-03-19 10:41	< 1 s	0.0692928	0.0692919	0.0000003
EARTH	2066-03-28 02:42	< 1 s	0.1646261	0.1646251	0.0000003
EARTH	2073-09-24 18:43	< 1 s	0.0941796	0.0941795	0.0000000
EARTH	2083-03-19 18:39	< 1 s	0.0782204	0.0782195	0.0000003
EARTH	2092-03-27 03:58	< 1 s	0.1493129	0.1493120	0.0000003
EARTH	2099-09-24 21:26	< 1 s	0.0963199	0.0963197	0.0000001
EARTH	2109-03-19 11:13	< 1 s	0.1058513	0.1058507	0.0000002
EARTH	2118-03-27 14:54	< 1 s	0.1176046	0.1176040	0.0000002
EARTH	2125-09-24 15:40	< 1 s	0.1079948	0.1079945	0.0000001

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
64.84873548	78.69786201	0.00163156	MINIMUM
266.98285970	261.15390600	0.09464424	MINIMUM
346.92243801	348.43120829	0.96872582	SADDLE
163.76022858	172.66195873	1.20590707	SADDLE
348.80193687	173.07887874	1.63310715	SADDLE
157.17430998	340.63436922	1.94177243	SADDLE
92.96422601	273.01643020	2.04564953	MAXIMUM
238.25567147	67.91310575	2.14498653	MAXIMUM

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MOID Plots

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