Asteroids

2025QK17 help

Last update: 2025-11-24 16:53 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.775

Aphelion (Q)

1.847

Eccentricity (e)

0.409

Inclination (i)

2.5

deg

Orbit period (P)

548.5

Earth MOID

0.00028

U parameter

7.3

Next Earth close approach

Date

2028-08-28

Nominal distance (from Earth center)

0.02434

3641568

Maximum Brightness

24.8

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

29.9

mag

Diameter

2.7 - 6*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-08-29

Observatory

Pan-STARRS 1, Haleakala

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

1.311380

1-sigma variation

0.000393

Unit

Eccentricity (e)

Value

0.408644

1-sigma variation

0.000263

Unit

Inclination (i)

Value

2.5423

1-sigma variation

0.0014

Unit

Long. of Ascending Node (Ω)

Value

154.6746

1-sigma variation

0.0010

Unit

Arg. of Perihelion (ω)

Value

100.9655

1-sigma variation

0.0045

Unit

Mean Anomaly (M)

Value

92.50978

1-sigma variation

0.04892

Unit

Perihelion distance

Value

0.775492

1-sigma variation

Unit

Aphelion distance

Value

1.847268

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.194323

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.002473

1-sigma variation

Unit

MOID

Value

0.000282

1-sigma variation

Unit

Orbit Period

Value

548.5184

1-sigma variation

Unit

U parameter

Value

7.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.54751E-7	1.02861E-7	5.51827E-7	1.03389E-7	-2.11575E-7	-1.92449E-5
e	1.02861E-7	6.91353E-8	3.67040E-7	9.58027E-8	-2.63127E-7	-1.28001E-5
i	5.51827E-7	3.67040E-7	1.96891E-6	3.77906E-7	-7.95065E-7	-6.86280E-5
Ω	1.03389E-7	9.58027E-8	3.77906E-7	1.02873E-6	-4.47581E-6	-1.31504E-5
ω	-2.11575E-7	-2.63127E-7	-7.95065E-7	-4.47581E-6	1.98961E-5	2.76315E-5
M	-1.92449E-5	-1.28001E-5	-6.86280E-5	-1.31504E-5	2.76315E-5	2.39340E-3

Date of computation: 2025-11-24 16:53 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

29.927

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

2.7 - 6*

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

[-]

Download this part as:

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

167

Unit

Source

[1]

Normalized RMS of residuals

Value

0.300242

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-08-29.411782

Unit

Source

[2]

Last Observation

Value

2025-08-31.372614

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

15 (1)

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 2025QK17 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	1952-08-04 20:39	> 1 mo	0.1578588	0.0035170	0.2073286
VENUS	1959-06-27 22:02	> 1 mo	0.0429918	0.0257285	0.1413143
EARTH	1959-09-01 15:41	> 1 w	0.0903661	0.0005335	0.2203490
EARTH	1962-03-03 16:13	> 1 w	0.1061991	0.0070206	0.1930999
EARTH	1969-03-17 10:21	> 1 d	0.0936241	0.0081835	0.0638398
VENUS	1969-05-04 15:51	> 1 w	0.0354493	0.0311201	0.0190164
VENUS	1979-03-05 11:11	> 1 w	0.0434137	0.0259103	0.0421747
EARTH	2004-07-20 13:43	> 1 w	0.1999833	0.1394113	0.0202160
EARTH	2011-08-14 11:10	> 1 d	0.1269407	0.1029510	0.0079968
EARTH	2018-08-25 11:34	> 1 d	0.0313070	0.0004063	0.0197433
EARTH	2025-08-27 14:38	2.2	0.0006690	0.0006666	0.0000008
EARTH	2028-08-28 22:47	807.1	0.0243424	0.0003674	0.0083942
EARTH	2031-09-03 05:42	7.4	0.0974882	0.0970299	0.0001528
EARTH	2034-09-08 00:23	544.7	0.1924324	0.1680079	0.0081415
EARTH	2093-03-13 22:17	> 1 w	0.1189411	0.0187833	0.2185656
EARTH	2096-03-18 14:07	> 1 w	0.0371782	0.0192870	0.1594003
EARTH	2099-03-22 16:15	> 1 d	0.0251142	0.0194170	0.0329303
EARTH	2102-03-30 03:11	> 1 d	0.0868791	0.0183654	0.0543668
EARTH	2105-04-14 08:48	> 1 mo	0.1551334	0.0137572	0.1222402
EARTH	2123-08-07 10:56	> 1 mo	0.1503162	0.0094668	0.8641195

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
55.92268691	233.78622364	0.00028170	MINIMUM
305.70480588	76.63202039	0.01825666	MINIMUM
0.99483960	155.34277742	0.24406647	SADDLE
180.44540177	334.86219519	0.86407099	SADDLE
1.13349713	335.57846269	1.76022775	SADDLE
180.53379856	154.92611816	2.86311935	MAXIMUM

Download:

MOID Plots

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

Level lines of the squared distance function

2025QK17

Date in UTC	MJD	σ	σ_imp	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS
2052-08-27.392	70776.392	-2.977	0.000	0.34 ± 0.009	2.93E6	4.30E-9	2.14E-3	-10.41
2052-08-27.403	70776.403	-3.028	0.000	1.35 ± 0.009	1.05E6	1.56E-9	2.14E-3	-10.85
2054-08-28.006	71507.006	-2.549	0.000	0.59 ± 0.013	1.36E5	2.82E-7	2.14E-3	-8.62
2057-08-27.662	72602.662	-2.902	0.000	0.27 ± 0.021	5.79E5	2.75E-8	2.14E-3	-9.68
2057-08-27.665	72602.665	-2.890	0.000	0.84 ± 0.004	4.13E5	3.23E-8	2.13E-3	-9.61
2057-08-27.814	72602.814	-2.510	0.000	0.75 ± 0.023	4.24E4	9.31E-7	2.14E-3	-8.15
2060-08-27.612	73698.612	-2.508	0.000	0.80 ± 0.009	4.08E6	1.01E-8	2.14E-3	-10.15
2063-08-28.338	74794.338	-3.193	0.160	1.37 ± 0.023	3.34E5	1.27E-9	2.14E-3	-11.09
2065-08-27.651	75524.651	-2.689	0.000	1.02 ± 0.002	1.54E6	1.32E-8	2.14E-3	-10.09
2066-08-27.975	75889.975	-3.237	0.000	1.23 ± 0.017	7.63E6	3.33E-10	2.14E-3	-11.70
2067-08-28.308	76255.308	-2.778	0.000	1.33 ± 0.002	5.78E5	3.68E-8	2.14E-3	-9.67
2069-08-27.766	76985.766	-2.821	0.000	0.65 ± 0.010	1.58E6	1.14E-8	2.14E-3	-10.20
2075-08-28.254	79177.254	-3.246	0.000	0.72 ± 0.003	8.71E5	5.78E-9	2.14E-3	-10.55


Based on 15 optical observations (of which 1 are rejected as outliers) from 2025/08/29.412 to 2025/08/31.373.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.37 and 1.37 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 5.0, Date of computation=20250901 143942.622 UTC.

Download this part as:

Download Impactor Table as: