Asteroids

2025FK12 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.922

Aphelion (Q)

1.515

Eccentricity (e)

0.243

Inclination (i)

6.8

deg

Orbit period (P)

491.1

Earth MOID

0.02351

U parameter

7.5

Next Earth close approach

Date

2029-06-28

Nominal distance (from Earth center)

0.1449

21676234

Maximum Brightness

26.9

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.9

mag

Diameter

18 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-03-26

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

1.218178

1-sigma variation

0.000465

Unit

Eccentricity (e)

Value

0.243377

1-sigma variation

0.000367

Unit

Inclination (i)

Value

6.7574

1-sigma variation

0.0087

Unit

Long. of Ascending Node (Ω)

Value

20.0090

1-sigma variation

0.0003

Unit

Arg. of Perihelion (ω)

Value

248.6623

1-sigma variation

0.0019

Unit

Mean Anomaly (M)

Value

120.33372

1-sigma variation

0.05971

Unit

Perihelion distance

Value

0.921701

1-sigma variation

Unit

Aphelion distance

Value

1.514655

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.259353

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.049666

1-sigma variation

Unit

MOID

Value

0.023509

1-sigma variation

Unit

Orbit Period

Value

491.0938

1-sigma variation

Unit

U parameter

Value

7.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.15970E-7	1.70744E-7	4.05982E-6	1.31065E-7	-8.66253E-7	-2.77484E-5
e	1.70744E-7	1.34989E-7	3.20963E-6	1.03653E-7	-6.84704E-7	-2.19376E-5
i	4.05982E-6	3.20963E-6	7.63175E-5	2.46287E-6	-1.62857E-5	-5.21616E-4
Ω	1.31065E-7	1.03653E-7	2.46287E-6	8.10115E-8	-5.21578E-7	-1.68408E-5
ω	-8.66253E-7	-6.84704E-7	-1.62857E-5	-5.21578E-7	3.49792E-6	1.11291E-4
M	-2.77484E-5	-2.19376E-5	-5.21616E-4	-1.68408E-5	1.11291E-4	3.56519E-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

25.9

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

[-]

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

239

Unit

Source

[1]

Normalized RMS of residuals

Value

0.613215

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-03-26.405204

Unit

Source

[2]

Last Observation

Value

2025-04-15.296545

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

29 (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 2025FK12 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	1951-04-23 01:11	> 1 w	0.0332939	0.0223076	0.0724269
EARTH	1955-07-08 11:25	> 1 mo	0.1442407	0.1342648	0.0087483
EARTH	1959-08-31 13:32	> 1 d	0.1203204	0.0932899	0.0353082
EARTH	1986-04-13 04:36	> 1 d	0.1055164	0.0205690	0.1147500
EARTH	1990-05-11 00:24	> 1 mo	0.1013961	0.0009865	0.0884649
EARTH	1994-08-23 12:23	> 1 w	0.1036037	0.0924854	0.0409437
EARTH	2025-04-20 13:33	< 1 min	0.0243401	0.0242464	0.0000312
EARTH	2029-06-28 06:29	> 1 w	0.1448967	0.1433987	0.0006323
EARTH	2033-08-30 16:28	> 1 d	0.1078021	0.0911568	0.0147413
EARTH	2060-04-12 22:26	> 1 d	0.1078480	0.0219283	0.1011691
EARTH	2064-05-10 06:05	> 1 w	0.1010277	0.0016841	0.0708012
EARTH	2068-08-23 12:21	> 1 d	0.1028683	0.0901872	0.0284833
EARTH	2072-09-05 11:05	> 1 d	0.1967380	0.1017077	0.0375598
EARTH	2099-04-20 10:58	> 1 w	0.0271098	0.0256128	0.0304560
EARTH	2103-06-10 16:37	> 1 mo	0.1377724	0.0760515	0.0959496
EARTH	2107-08-28 00:52	> 1 mo	0.0929954	0.0895938	0.1289963
EARTH	2111-09-07 05:30	> 1 w	0.1850725	0.0873876	0.6839155

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
312.55945988	107.58471775	0.02350882	MINIMUM
53.22530861	233.76597707	0.09169997	MINIMUM
7.61237541	176.97901155	0.14615495	SADDLE
182.31015173	349.16537970	0.54762543	SADDLE
1.34753892	348.76095362	1.90271009	SADDLE
180.14461136	167.49062746	2.52871950	MAXIMUM

Download:

MOID Plots

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