Asteroids

349507 2008QY help

Last update: 2025-09-10 00:30 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.489

Aphelion (Q)

1.847

Eccentricity (e)

0.582

Inclination (i)

13.6

deg

Orbit period (P)

461.0

Earth MOID

0.03098

U parameter

0.0

Next Earth close approach

Date

2041-02-20

Nominal distance (from Earth center)

0.13736

20549397

Maximum Brightness

17.8

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

18.4

mag

Diameter

600 - 1200*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2008-08-21

Observatory

Steward Observatory, Kitt Peak-Spacewatch

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.167955

1-sigma variation

4.277E-10

Unit

Eccentricity (e)

Value

0.581596

1-sigma variation

1.714E-8

Unit

Inclination (i)

Value

13.5625

1-sigma variation

2.446E-6

Unit

Long. of Ascending Node (Ω)

Value

1.8760

1-sigma variation

2.291E-6

Unit

Arg. of Perihelion (ω)

Value

254.9442

1-sigma variation

2.816E-6

Unit

Mean Anomaly (M)

Value

290.65778

1-sigma variation

9.058E-7

Unit

Perihelion distance

Value

0.488677

1-sigma variation

Unit

Aphelion distance

Value

1.847233

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.092991

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.326260

1-sigma variation

Unit

MOID

Value

0.030978

1-sigma variation

Unit

Orbit Period

Value

461.0389

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.82966E-19	6.00940E-18	-5.62193E-16	-4.22638E-16	-1.85821E-16	-3.31561E-16
e	6.00940E-18	2.93718E-16	-3.29157E-16	-9.78164E-15	-1.57985E-14	-1.54320E-14
i	-5.62193E-16	-3.29157E-16	5.98085E-12	3.36954E-12	-2.78315E-12	1.51875E-13
Ω	-4.22638E-16	-9.78164E-15	3.36954E-12	5.24885E-12	-5.22946E-12	6.43504E-13
ω	-1.85821E-16	-1.57985E-14	-2.78315E-12	-5.22946E-12	7.92748E-12	6.89794E-13
M	-3.31561E-16	-1.54320E-14	1.51875E-13	6.43504E-13	6.89794E-13	8.20467E-13

Date of computation: 2025-09-10 00:30 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

18.41

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

600 - 1200*

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

Radar R

Unit

Source

[3]

Download this part as:

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	Estimation	Estimated from absolute magnitude
[3]	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

12491

Unit

Source

[1]

Unobserved

Value

688

Unit

Source

[1]

Normalized RMS of residuals

Value

0.558602

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

1989-09-30.42361

Unit

Source

[2]

Last Observation

Value

2023-12-12.322557

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

1049 (18)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2012-02-10

Unit

Source

[3]

Last Observation

Value

2023-10-07

Unit

Source

[3]

Delay (Discarded)

Value

6 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

3 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

9 (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

Close Approaches for 349507 2008QY from 1950 to 2125

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1960-09-28 18:33	< 1 s	0.0753137	0.0753136	0.0000000
VENUS	1965-07-16 21:21	< 1 s	0.0495148	0.0495145	0.0000001
EARTH	1965-10-07 23:55	< 1 s	0.1458956	0.1458955	0.0000000
VENUS	1970-10-01 08:53	< 1 s	0.0328237	0.0328237	0.0000000
EARTH	1983-02-17 03:12	< 1 s	0.1361001	0.1361000	0.0000000
EARTH	1994-10-03 16:35	< 1 s	0.0450367	0.0450364	0.0000001
EARTH	2012-02-14 22:06	< 1 s	0.1530900	0.1530899	0.0000000
VENUS	2017-03-20 11:34	< 1 s	0.0452578	0.0452576	0.0000000
EARTH	2023-10-03 20:38	< 1 s	0.0422796	0.0422795	0.0000000
EARTH	2041-02-20 07:28	< 1 s	0.1373642	0.1373641	0.0000000
VENUS	2046-05-30 22:40	< 1 s	0.0311718	0.0311716	0.0000001
EARTH	2047-09-28 13:15	< 1 s	0.1074139	0.1074137	0.0000000
EARTH	2052-10-09 01:06	< 1 s	0.1659446	0.1659446	0.0000000
EARTH	2070-02-22 09:06	< 1 s	0.1484901	0.1484899	0.0000001
EARTH	2076-09-27 15:35	< 1 s	0.1153693	0.1153690	0.0000001
EARTH	2081-10-08 05:09	< 1 s	0.1382072	0.1382069	0.0000001
VENUS	2092-11-19 00:12	< 1 s	0.0362350	0.0362349	0.0000000
EARTH	2099-02-19 12:22	< 1 s	0.1301875	0.1301874	0.0000000
EARTH	2105-09-27 18:27	< 1 s	0.1455336	0.1455335	0.0000000
EARTH	2110-10-09 09:04	< 1 s	0.1334489	0.1334487	0.0000001

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
74.87584046	267.54552667	0.03066132	MINIMUM
289.23058886	46.40950451	0.13236606	MINIMUM
2.66112486	158.74909535	0.55090731	SADDLE
181.48079017	335.16283206	0.91552279	SADDLE
1.69408935	336.78037959	1.46499187	SADDLE
179.90803672	154.34714867	2.84489727	MAXIMUM

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MOID Plots

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