Asteroids

2025JK help

Last update: 2025-09-10 00:30 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.928

Aphelion (Q)

1.091

Eccentricity (e)

0.081

Inclination (i)

9.9

deg

Orbit period (P)

370.5

Earth MOID

0.02245

U parameter

6.4

Next Earth close approach

Date

2026-04-27

Nominal distance (from Earth center)

0.1023

15304533

Maximum Brightness

23.9

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.6

mag

Diameter

13 - 28*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-05-03

Observatory

Pan-STARRS 2, 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

1.009542

1-sigma variation

0.000050

Unit

Eccentricity (e)

Value

0.080636

1-sigma variation

0.000094

Unit

Inclination (i)

Value

9.9075

1-sigma variation

0.0124

Unit

Long. of Ascending Node (Ω)

Value

42.1348

1-sigma variation

0.0004

Unit

Arg. of Perihelion (ω)

Value

297.6281

1-sigma variation

0.0311

Unit

Mean Anomaly (M)

Value

86.79842

1-sigma variation

0.02842

Unit

Perihelion distance

Value

0.928136

1-sigma variation

Unit

Aphelion distance

Value

1.090947

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.024961

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.032463

1-sigma variation

Unit

MOID

Value

0.022450

1-sigma variation

Unit

Orbit Period

Value

370.4971

1-sigma variation

Unit

U parameter

Value

6.4

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.51636E-9	4.70470E-9	6.19776E-7	-2.08442E-8	-1.55791E-6	1.42566E-6
e	4.70470E-9	8.79681E-9	1.15884E-6	-3.89742E-8	-2.91268E-6	2.66550E-6
i	6.19776E-7	1.15884E-6	1.52668E-4	-5.13472E-6	-3.83675E-4	3.51109E-4
Ω	-2.08442E-8	-3.89742E-8	-5.13472E-6	1.72718E-7	1.29031E-5	-1.18079E-5
ω	-1.55791E-6	-2.91268E-6	-3.83675E-4	1.29031E-5	9.64622E-4	-8.82750E-4
M	1.42566E-6	2.66550E-6	3.51109E-4	-1.18079E-5	-8.82750E-4	8.07836E-4

Date of computation: 2025-09-10 00:30 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

26.637

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

13 - 28*

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

145

Unit

Source

[1]

Normalized RMS of residuals

Value

0.690005

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-04-23.530688

Unit

Source

[2]

Last Observation

Value

2025-05-03.983851

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

19 (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 2025JK 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	1959-05-09 20:46	165.7	0.1398536	0.1224872	0.0058048
EARTH	1960-05-08 21:21	255.4	0.0628935	0.0573392	0.0018571
EARTH	1961-05-06 21:19	59.7	0.0323989	0.0279537	0.0016659
EARTH	1962-04-30 05:31	1415.5	0.0915252	0.0722672	0.0065254
EARTH	1963-04-13 10:50	> 1 d	0.1582053	0.1320712	0.0089652
EARTH	1963-10-18 16:37	> 1 d	0.1312836	0.0985904	0.0112463
EARTH	1964-11-01 20:53	> 1 d	0.0571586	0.0240239	0.0149333
EARTH	1965-11-09 13:13	> 1 d	0.0286234	0.0209471	0.0127030
EARTH	1966-11-16 06:54	> 1 d	0.1128802	0.0556485	0.0196531
EARTH	2023-05-09 13:04	21.1	0.1621576	0.1595945	0.0008546
EARTH	2024-05-09 00:48	3.2	0.0739774	0.0727160	0.0004210
EARTH	2025-05-06 15:48	< 1 min	0.0338566	0.0337351	0.0000405
EARTH	2026-04-27 22:54	64.8	0.1023045	0.1010066	0.0004330
EARTH	2026-09-02 17:54	334.7	0.1861759	0.1861693	0.0000022
EARTH	2027-04-03 19:57	256.7	0.1746824	0.1725926	0.0006978
EARTH	2027-10-23 11:29	203.0	0.1106834	0.1086826	0.0006678
EARTH	2028-11-05 04:09	171.0	0.0294754	0.0271371	0.0008161
EARTH	2029-11-12 04:35	138.3	0.0625370	0.0580452	0.0015062
EARTH	2030-11-18 04:38	92.1	0.1511709	0.1457958	0.0017929
EARTH	2088-05-07 07:53	83.2	0.1992621	0.1800084	0.0064299
EARTH	2089-05-08 17:17	10.2	0.1103488	0.0922392	0.0060962
EARTH	2090-05-07 23:27	264.2	0.0364895	0.0297193	0.0034606
EARTH	2091-05-04 06:04	713.4	0.0569919	0.0438828	0.0047266
EARTH	2092-04-22 06:31	1284.4	0.1244383	0.1110544	0.0045334
EARTH	2092-09-21 10:40	> 1 d	0.1749189	0.1658722	0.0030939
EARTH	2093-03-25 20:05	> 1 d	0.1852947	0.1765235	0.0029850
EARTH	2093-10-23 19:00	838.5	0.1051288	0.0950975	0.0033802
EARTH	2094-11-04 21:47	458.3	0.0339182	0.0285032	0.0020127
EARTH	2095-11-11 09:53	230.9	0.0485776	0.0434949	0.0017141
EARTH	2096-11-16 04:43	67.1	0.1283523	0.1267571	0.0005317

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
61.25599587	304.11325319	0.02304696	MINIMUM
250.90126279	123.74079559	0.03030392	MINIMUM
336.14020202	212.76139853	0.18613864	SADDLE
155.92015062	35.30166957	0.20289602	SADDLE
348.13159105	46.06095627	1.91135904	SADDLE
175.12601112	233.09422894	2.09329772	MAXIMUM

Download:

MOID Plots

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