Asteroids

2025HK help

Last update: 2025-04-21 12:30 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Aten

Perihelion (q)

0.604

Aphelion (Q)

1.140

Eccentricity (e)

0.307

Inclination (i)

30.5

deg

Orbit period (P)

297.5

Earth MOID

0.02217

U parameter

7.8

Next Earth close approach

Date

2034-04-17

Nominal distance (from Earth center)

0.19433

29071868

Maximum Brightness

25.5

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

25.9

mag

Diameter

18 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-04-18

Observatory

GINOP-KHK, Piszkesteto

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

0.872204

1-sigma variation

0.000275

Unit

Eccentricity (e)

Value

0.307479

1-sigma variation

0.000280

Unit

Inclination (i)

Value

30.5464

1-sigma variation

0.0766

Unit

Long. of Ascending Node (Ω)

Value

29.4057

1-sigma variation

0.0023

Unit

Arg. of Perihelion (ω)

Value

319.3141

1-sigma variation

0.0760

Unit

Mean Anomaly (M)

Value

265.61192

1-sigma variation

0.13302

Unit

Perihelion distance

Value

0.604020

1-sigma variation

Unit

Aphelion distance

Value

1.140388

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.354489

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.025328

1-sigma variation

Unit

MOID

Value

0.022174

1-sigma variation

Unit

Orbit Period

Value

297.5264

1-sigma variation

Unit

U parameter

Value

7.8

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	7.58933E-8	7.70395E-8	2.10962E-5	-6.35084E-7	-2.09389E-5	3.66423E-5
e	7.70395E-8	7.82759E-8	2.14316E-5	-6.45187E-7	-2.12574E-5	3.72069E-5
i	2.10962E-5	2.14316E-5	5.86827E-3	-1.76661E-4	-5.82092E-3	1.01881E-2
Ω	-6.35084E-7	-6.45187E-7	-1.76661E-4	5.31828E-6	1.75234E-4	-3.06704E-4
ω	-2.09389E-5	-2.12574E-5	-5.82092E-3	1.75234E-4	5.77710E-3	-1.01099E-2
M	3.66423E-5	3.72069E-5	1.01881E-2	-3.06704E-4	-1.01099E-2	1.76931E-2

Date of computation: 2025-04-21 12:30 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

25.894

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

18 - 40*

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

Unit

Source

[1]

Normalized RMS of residuals

Value

0.618205

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-04-18.883215

Unit

Source

[2]

Last Observation

Value

2025-04-21.221257

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

42 (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 2025HK 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	1955-04-18 01:59	> 1 d	0.1594132	0.0263513	0.2476156
EARTH	1968-04-20 06:23	840.9	0.0225819	0.0219564	0.0146330
EARTH	1981-04-19 12:55	> 1 d	0.1936807	0.0460015	0.0660076
EARTH	1990-04-20 11:58	1374.4	0.0330667	0.0220890	0.0555569
EARTH	2003-04-21 05:55	609.6	0.1213159	0.0294556	0.0491028
EARTH	2012-04-18 11:12	1025.7	0.1196310	0.0290150	0.0333032
EARTH	2025-04-20 20:12	< 1 min	0.0311308	0.0309190	0.0000706
EARTH	2034-04-17 05:27	831.7	0.1943334	0.1220852	0.0242517
EARTH	2047-04-21 01:56	903.1	0.0257808	0.0223934	0.0279194
EARTH	2060-04-20 12:59	> 1 d	0.1344435	0.0315594	0.1460578
EARTH	2069-04-19 03:53	> 1 d	0.1074484	0.0249456	0.2152285
EARTH	2082-04-21 07:51	> 1 d	0.0384782	0.0230875	0.2017493
EARTH	2091-04-17 18:43	> 1 d	0.1899150	0.0287273	0.2182773
EARTH	2104-04-21 10:59	> 1 d	0.0283260	0.0226707	0.0910303
EARTH	2117-04-22 01:47	> 1 d	0.1217348	0.0298574	0.1437291

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
235.47178739	107.32577094	0.02217446	MINIMUM
43.80720369	303.21546426	0.33586438	MINIMUM
126.97032213	27.57592232	0.52625101	SADDLE
328.07450168	205.32106347	0.56231225	SADDLE
342.61547937	47.48884781	1.56219167	SADDLE
188.40001713	255.65004815	2.11851855	MAXIMUM

Download:

MOID Plots

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