Asteroids

2025FN4 help

Last update: 2025-04-15 07:30 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.710

Aphelion (Q)

2.506

Eccentricity (e)

0.559

Inclination (i)

26.9

deg

Orbit period (P)

744.6

Earth MOID

0.06202

U parameter

7.2

Next Earth close approach

Date

2033-09-25

Nominal distance (from Earth center)

0.06625

9910399

Maximum Brightness

18.8

mag

Risk

Object is not in risk list

Object is in priority list

Physical Properties

Absolute Magnitude (H)

22.7

mag

Diameter

80 - 170*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-03-21

Observatory

Mt. Lemmon Survey

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

1.607679

1-sigma variation

0.000489

Unit

Eccentricity (e)

Value

0.558645

1-sigma variation

0.000154

Unit

Inclination (i)

Value

26.9383

1-sigma variation

0.0074

Unit

Long. of Ascending Node (Ω)

Value

8.8666

1-sigma variation

0.0017

Unit

Arg. of Perihelion (ω)

Value

270.4134

1-sigma variation

0.0029

Unit

Mean Anomaly (M)

Value

344.19946

1-sigma variation

0.01002

Unit

Perihelion distance

Value

0.709557

1-sigma variation

Unit

Aphelion distance

Value

2.505801

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.100848

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.111669

1-sigma variation

Unit

MOID

Value

0.062022

1-sigma variation

Unit

Orbit Period

Value

744.5561

1-sigma variation

Unit

U parameter

Value

7.2

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.39084E-7	7.51861E-8	3.60691E-6	-8.31804E-7	-1.41787E-6	4.89781E-6
e	7.51861E-8	2.36462E-8	1.13457E-6	-2.61659E-7	-4.45441E-7	1.54018E-6
i	3.60691E-6	1.13457E-6	5.44691E-5	-1.25636E-5	-2.13204E-5	7.38779E-5
Ω	-8.31804E-7	-2.61659E-7	-1.25636E-5	2.89800E-6	4.91407E-6	-1.70368E-5
ω	-1.41787E-6	-4.45441E-7	-2.13204E-5	4.91407E-6	8.50983E-6	-2.90619E-5
M	4.89781E-6	1.54018E-6	7.38779E-5	-1.70368E-5	-2.90619E-5	1.00338E-4

Date of computation: 2025-04-10 13:52 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

22.746

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

80 - 170*

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

Unit

Source

[1]

Normalized RMS of residuals

Value

0.599908

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-03-21.290173

Unit

Source

[2]

Last Observation

Value

2025-04-10.130103

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

53 (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 2025FN4 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	1970-03-30 13:02	> 1 d	0.1447280	0.0627134	0.1214525
EARTH	1972-04-09 03:49	> 1 d	0.1309394	0.0627412	0.1198131
EARTH	1980-09-23 20:40	> 1 d	0.0889050	0.0645282	0.0840530
EARTH	1982-10-04 08:59	> 1 d	0.1881359	0.0610691	0.1104513
EARTH	2023-04-01 16:03	344.9	0.1108662	0.0978612	0.0045206
EARTH	2025-04-10 23:10	< 1 min	0.1680016	0.1678726	0.0000430
EARTH	2033-09-25 15:18	1405.5	0.0662469	0.0615538	0.0085046
EARTH	2076-03-30 19:29	> 1 w	0.1351959	0.0709999	0.1509196
EARTH	2078-04-09 21:37	> 1 w	0.1421337	0.0697976	0.1596586
EARTH	2086-09-23 20:21	> 1 w	0.0916713	0.0571562	0.1431997
EARTH	2088-10-03 06:30	> 1 w	0.1711817	0.0549759	0.1683805

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
50.88113702	262.17505067	0.06202205	MINIMUM
308.96077437	91.64071632	0.06823761	MINIMUM
359.88779239	176.77467484	0.50061801	SADDLE
0.01815113	357.05937324	1.64787385	SADDLE
179.94469515	357.08373200	1.68877323	SADDLE
180.07599695	177.16221060	3.44271956	MAXIMUM

Download:

MOID Plots

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