Asteroids

2013QC11 help

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

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.576

Aphelion (Q)

2.445

Eccentricity (e)

0.619

Inclination (i)

2.2

deg

Orbit period (P)

678.2

Earth MOID

0.03127

U parameter

1.9

Next Earth close approach

Date

2026-08-13

Nominal distance (from Earth center)

0.03706

5543600

Maximum Brightness

17.6

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

21.5

mag

Diameter

130 - 300*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2013-08-28

Observatory

University of Arizona Catalina Sky Survey

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

1.510610

1-sigma variation

1.190E-7

Unit

Eccentricity (e)

Value

0.618704

1-sigma variation

3.786E-7

Unit

Inclination (i)

Value

2.1503

1-sigma variation

1.386E-5

Unit

Long. of Ascending Node (Ω)

Value

250.4252

1-sigma variation

0.0003

Unit

Arg. of Perihelion (ω)

Value

332.7855

1-sigma variation

0.0003

Unit

Mean Anomaly (M)

Value

353.25494

1-sigma variation

0.00027

Unit

Perihelion distance

Value

0.575990

1-sigma variation

Unit

Aphelion distance

Value

2.445230

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.412310

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

1.084494

1-sigma variation

Unit

MOID

Value

0.031268

1-sigma variation

Unit

Orbit Period

Value

678.1516

1-sigma variation

Unit

U parameter

Value

1.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.41558E-14	-4.30435E-14	1.38887E-12	4.84965E-12	-1.15724E-11	-3.14820E-11
e	-4.30435E-14	1.43353E-13	-4.73289E-12	-1.69701E-11	4.07082E-11	9.06262E-11
i	1.38887E-12	-4.73289E-12	1.92123E-10	9.45256E-10	-1.78302E-9	-2.83429E-9
Ω	4.84965E-12	-1.69701E-11	9.45256E-10	8.31085E-8	-8.61192E-8	-9.68218E-9
ω	-1.15724E-11	4.07082E-11	-1.78302E-9	-8.61192E-8	9.35702E-8	2.29279E-8
M	-3.14820E-11	9.06262E-11	-2.83429E-9	-9.68218E-9	2.29279E-8	7.24691E-8

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

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

[1]

Taxonomy (all)

Value

Unit

Source

[2]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

21.515

Unit

mag

Source

[3]

Slope Parameter (G)

Value

0.15**

Unit

Source

[3]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[4]

Diameter

Value

130 - 300*

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

Unit

Source

[-]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Alexey V. Sergeyev and Benoit Carry A&A, 652 (2021) A59
[2]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[3]	ESA Aegis	ESA orbit determination and impact monitoring system
[4]	Estimation	Estimated from absolute magnitude

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

1196

Unit

Source

[1]

Unobserved

Value

3467

Unit

Source

[1]

Normalized RMS of residuals

Value

0.353907

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2013-08-28.22006

Unit

Source

[2]

Last Observation

Value

2016-12-06.41133

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

107 (0)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

Unit

Source

[-]

Last Observation

Value

Unit

Source

[-]

Delay (Discarded)

Value

0 (0)

Unit

Source

[-]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[-]

Total Radar Observations (Discarded)

Value

0 (0)

Unit

Source

[-]

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

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 2013QC11 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
VENUS	1954-01-15 18:32	3.2	0.0447281	0.0446722	0.0000186
EARTH	1987-08-03 03:08	2.3	0.1656946	0.1656373	0.0000191
EARTH	2000-08-08 07:49	1.2	0.0885024	0.0884694	0.0000110
EARTH	2013-08-11 19:17	< 1 min	0.0438767	0.0438752	0.0000005
EARTH	2017-01-19 04:23	< 1 min	0.1856803	0.1856769	0.0000011
EARTH	2026-08-13 01:32	< 1 min	0.0370567	0.0370485	0.0000027
EARTH	2030-01-19 04:22	1.2	0.1926008	0.1925491	0.0000172
EARTH	2039-08-09 07:26	3.7	0.0886078	0.0884834	0.0000415
VENUS	2043-03-27 20:53	6.8	0.0405357	0.0404719	0.0000214
EARTH	2052-08-01 14:36	7.9	0.1814959	0.1812866	0.0000698
EARTH	2106-02-10 18:45	2.6	0.1861721	0.1861058	0.0000221
EARTH	2119-02-06 05:35	< 1 min	0.1239723	0.1239649	0.0000025

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
304.15787175	26.40088196	0.03124133	MINIMUM
57.82117584	219.92057665	0.03577677	MINIMUM
1.74032189	124.07122411	0.43451792	SADDLE
180.40171858	302.46095613	1.45437606	SADDLE
1.76669082	304.15460286	1.56710014	SADDLE
180.45022753	122.49073108	3.45552693	MAXIMUM

Download:

MOID Plots

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