Asteroids

2005QK76 help

Last update: 2025-07-29 02:36 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.674

Aphelion (Q)

2.121

Eccentricity (e)

0.518

Inclination (i)

22.9

deg

Orbit period (P)

603.3

Earth MOID

0.00039

U parameter

9.0

Next Earth close approach

Date

2030-02-18

Nominal distance (from Earth center)

0.17072

25539144

Maximum Brightness

24.2

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

24.9

mag

Diameter

27 - 60*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2005-08-30

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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.397359

1-sigma variation

0.003839

Unit

Eccentricity (e)

Value

0.517577

1-sigma variation

0.002069

Unit

Inclination (i)

Value

22.8575

1-sigma variation

0.1060

Unit

Long. of Ascending Node (Ω)

Value

337.3811

1-sigma variation

0.0014

Unit

Arg. of Perihelion (ω)

Value

266.2902

1-sigma variation

0.1696

Unit

Mean Anomaly (M)

Value

5.42288

1-sigma variation

25.19520

Unit

Perihelion distance

Value

0.674118

1-sigma variation

Unit

Aphelion distance

Value

2.120600

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.049415

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.000643

1-sigma variation

Unit

MOID

Value

0.000390

1-sigma variation

Unit

Orbit Period

Value

603.3378

1-sigma variation

Unit

U parameter

Value

9.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.47416E-5	7.94453E-6	4.06687E-4	-5.22446E-6	6.51127E-4	-9.67365E-2
e	7.94453E-6	4.28154E-6	2.19143E-4	-2.81620E-6	3.50901E-4	-5.21332E-2
i	4.06687E-4	2.19143E-4	1.12376E-2	-1.43746E-4	1.79628E-2	-2.66873E0
Ω	-5.22446E-6	-2.81620E-6	-1.43746E-4	1.85984E-6	-2.30765E-4	3.42838E-2
ω	6.51127E-4	3.50901E-4	1.79628E-2	-2.30765E-4	2.87605E-2	-4.27279E0
M	-9.67365E-2	-5.21332E-2	-2.66873E0	3.42838E-2	-4.27279E0	6.34799E2

Date of computation: 2025-07-29 02:36 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

24.946

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

27 - 60*

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

Unit

Source

[-]

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Sources

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

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

Unit

Source

[1]

Unobserved

Value

7313

Unit

Source

[1]

Normalized RMS of residuals

Value

1.01595

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2005-08-30.26872

Unit

Source

[2]

Last Observation

Value

2005-08-31.94669

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

14 (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

Close Approaches for 2005QK76 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	1954-02-18 01:53	> 1 mo	0.1727731	0.0085338	1.4090342
EARTH	1967-08-26 20:29	> 1 mo	0.0414218	0.0311423	0.6170844
EARTH	1987-03-07 00:28	> 1 mo	0.1641623	0.0096744	0.6403488
EARTH	1992-02-22 02:11	> 1 w	0.0992886	0.0034328	0.5063471
EARTH	2005-08-27 01:12	< 1 min	0.0323537	0.0319523	0.0001338
EARTH	2025-03-03 16:07	> 1 mo	0.1126982	0.0034655	0.7299203
EARTH	2030-02-18 08:53	> 1 mo	0.1707186	0.0044902	0.8361112
EARTH	2038-09-04 20:53	> 1 mo	0.1792627	0.0237227	0.9731073
EARTH	2043-08-23 23:05	> 1 mo	0.0985754	0.0253947	1.0053975
EARTH	2063-02-27 06:25	> 1 mo	0.0127602	0.0016100	0.7311597
EARTH	2068-02-18 10:14	> 1 mo	0.1832319	0.0031441	4.4723441
EARTH	2081-09-01 04:35	> 1 mo	0.1050497	0.0252207	16.5047765
EARTH	2086-08-23 20:33	> 1 mo	0.0924555	0.0255419	19.5901077
EARTH	2111-03-07 06:59	> 1 mo	0.1512699	0.0016612	24.0647024
EARTH	2116-02-25 21:10	> 1 mo	0.0462437	0.0036457	22.8878112

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
304.25921033	54.34537362	0.00038983	MINIMUM
59.13975148	232.79009647	0.02844175	MINIMUM
2.14000358	144.35170706	0.47125367	SADDLE
181.06957166	322.06844568	1.26981363	SADDLE
1.62868743	323.37047665	1.62939150	SADDLE
180.15984691	141.52328412	3.07919957	MAXIMUM

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MOID Plots

Click on the images to zoom-in and zoom-out

Level lines of the squared distance function

2005QK76

Date in UTC	MJD	σ	σ_imp	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS
2030-02-26.344	62558.344	0.194	0.000	0.08 ± 0.247	2.91E4	3.01E-5	2.53E0	-3.39
2036-02-26.827	64749.827	-0.155	0.000	0.91 ± 0.261	5.71E7	8.47E-9	2.50E0	-7.29
2038-02-26.288	65480.288	-1.837	0.000	1.02 ± 0.228	6.03E5	1.39E-7	2.40E0	-6.15
2038-02-26.304	65480.304	-1.232	0.000	0.61 ± 0.240	2.20E4	1.58E-5	2.44E0	-4.09
2038-02-26.314	65480.314	-0.738	1.984	1.15 ± 0.242	7.48E5	7.72E-9	2.40E0	-7.41
2041-02-26.072	66576.072	-0.727	0.000	0.65 ± 0.196	1.04E7	6.11E-8	2.47E0	-6.59
2048-02-26.794	69132.794	-0.674	0.000	1.05 ± 0.243	7.13E4	3.79E-6	2.47E0	-4.95
2048-02-26.795	69132.795	-0.540	0.000	1.11 ± 0.243	1.67E4	1.43E-5	2.48E0	-4.37
2059-02-26.524	73150.524	-2.309	3.498	1.15 ± 0.225	8.93E4	4.52E-11	2.30E0	-10.07
2083-02-26.464	81916.464	-3.338	0.000	0.58 ± 0.222	1.25E5	2.33E-8	2.30E0	-7.59
2105-02-26.910	89951.910	-4.559	0.000	0.33 ± 0.220	1.95E6	1.36E-11	2.24E0	-10.96
2107-02-27.382	90682.382	-3.833	0.000	1.05 ± 0.222	2.52E5	1.15E-9	2.27E0	-9.04
2107-02-27.387	90682.387	-3.862	0.000	0.16 ± 0.345	3.69E5	1.37E-9	2.27E0	-8.97
2108-02-27.625	91047.625	-4.912	0.000	0.74 ± 0.216	2.32E5	1.65E-11	2.22E0	-10.90


Based on 14 optical observations (of which 0 are rejected as outliers) from 2005/08/30.269 to 2005/08/31.947.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.15 and 1.15 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
AstOD software version= 4.0, Date of computation=20250805 130500.123 UTC.

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