Asteroids

2025KQ4 help

Last update: 2025-05-27 23:30 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.895

Aphelion (Q)

2.236

Eccentricity (e)

0.428

Inclination (i)

4.7

deg

Orbit period (P)

715.6

Earth MOID

1.601E-6

U parameter

7.2

Next Earth close approach

Date

2036-05-16

Nominal distance (from Earth center)

0.10773

16116361

Maximum Brightness

27.6

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

29.7

mag

Diameter

3 - 7*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-05-25

Observatory

Space Surveillance Telescope, HEH Station

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

1.565770

1-sigma variation

0.000463

Unit

Eccentricity (e)

Value

0.428229

1-sigma variation

0.000194

Unit

Inclination (i)

Value

4.7033

1-sigma variation

0.0016

Unit

Long. of Ascending Node (Ω)

Value

64.9483

1-sigma variation

1.169E-5

Unit

Arg. of Perihelion (ω)

Value

232.1645

1-sigma variation

0.0007

Unit

Mean Anomaly (M)

Value

328.77568

1-sigma variation

0.01580

Unit

Perihelion distance

Value

0.895262

1-sigma variation

Unit

Aphelion distance

Value

2.236277

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.746646

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.000005

1-sigma variation

Unit

MOID

Value

0.000002

1-sigma variation

Unit

Orbit Period

Value

715.6328

1-sigma variation

Unit

U parameter

Value

7.2

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.14165E-7	8.97998E-8	7.31528E-7	2.67186E-9	2.06519E-7	7.31120E-6
e	8.97998E-8	3.76555E-8	3.06820E-7	1.10632E-9	8.73534E-8	3.06538E-6
i	7.31528E-7	3.06820E-7	2.50281E-6	8.48670E-9	7.34706E-7	2.49649E-5
Ω	2.67186E-9	1.10632E-9	8.48670E-9	1.36672E-10	-2.03712E-9	9.24905E-8
ω	2.06519E-7	8.73534E-8	7.34706E-7	-2.03712E-9	4.48794E-7	6.98069E-6
M	7.31120E-6	3.06538E-6	2.49649E-5	9.24905E-8	6.98069E-6	2.49610E-4

Date of computation: 2025-05-27 23:30 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

29.656

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

3 - 7*

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

0.5

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.724542

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-05-25.428495

Unit

Source

[2]

Last Observation

Value

2025-05-25.90752

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

9 (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 2025KQ4 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	1974-09-23 12:37	> 1 d	0.1586449	0.0807002	0.0501043
EARTH	1976-08-13 08:13	> 1 w	0.1242617	0.0952616	0.0266252
EARTH	1978-06-04 08:25	> 1 w	0.0556422	0.0040188	0.0911877
EARTH	1980-05-10 03:24	> 1 d	0.1904775	0.0063315	0.1117798
MARS	1996-06-12 09:22	> 1 d	0.0484432	0.0389028	0.0383947
EARTH	2021-09-16 04:31	1396.0	0.0906185	0.0811899	0.0048181
EARTH	2023-07-23 21:28	> 1 d	0.1358091	0.1357999	0.0000068
EARTH	2025-05-26 01:33	< 1 s	0.0010842	0.0010829	0.0000004
EARTH	2036-05-16 15:55	> 1 d	0.1077312	0.0130114	0.0316216
EARTH	2056-09-30 16:27	> 1 d	0.1579929	0.0792594	0.0508199
EARTH	2067-09-19 21:42	> 1 d	0.0797500	0.0796239	0.0029000
EARTH	2078-08-24 20:56	> 1 w	0.1291992	0.0885005	0.0339875
EARTH	2089-07-17 23:37	> 1 mo	0.1461392	0.1157661	0.0160129
EARTH	2100-06-13 00:57	> 1 w	0.0867065	0.0076227	0.0856848
EARTH	2111-05-31 21:46	> 1 w	0.0262955	0.0015156	0.0565859
EARTH	2122-06-12 08:24	> 1 mo	0.0823826	0.0057471	0.2806448

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
325.54899379	142.09616489	0.00000160	MINIMUM
33.86585520	247.17424245	0.08046333	MINIMUM
2.50949130	199.09929263	0.13606076	SADDLE
180.08969314	14.73424108	1.25579989	SADDLE
359.66355576	14.50858175	1.87844754	SADDLE
179.65235164	194.45596061	3.25058248	MAXIMUM

Download:

MOID Plots

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