Asteroids

2025YF4 help

Last update: 2025-12-29 13:01 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.936

Aphelion (Q)

1.907

Eccentricity (e)

0.341

Inclination (i)

7.3

deg

Orbit period (P)

619.2

Earth MOID

0.02612

U parameter

7.6

Next Earth close approach

Date

2042-12-19

Nominal distance (from Earth center)

0.14835

22192471

Maximum Brightness

24.6

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.1

mag

Diameter

16 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-12-22

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.421774

1-sigma variation

0.000741

Unit

Eccentricity (e)

Value

0.341339

1-sigma variation

0.000373

Unit

Inclination (i)

Value

7.2942

1-sigma variation

0.0070

Unit

Long. of Ascending Node (Ω)

Value

270.5922

1-sigma variation

0.0015

Unit

Arg. of Perihelion (ω)

Value

230.7237

1-sigma variation

0.0027

Unit

Mean Anomaly (M)

Value

315.71000

1-sigma variation

0.03685

Unit

Perihelion distance

Value

0.936466

1-sigma variation

Unit

Aphelion distance

Value

1.907081

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.584754

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.048987

1-sigma variation

Unit

MOID

Value

0.026121

1-sigma variation

Unit

Orbit Period

Value

619.2187

1-sigma variation

Unit

U parameter

Value

7.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	5.49568E-7	2.76431E-7	5.22242E-6	-1.12371E-6	1.96940E-6	2.73148E-5
e	2.76431E-7	1.39044E-7	2.62685E-6	-5.65223E-7	9.90647E-7	1.37393E-5
i	5.22242E-6	2.62685E-6	4.96397E-5	-1.06812E-5	1.87295E-5	2.59558E-4
Ω	-1.12371E-6	-5.65223E-7	-1.06812E-5	2.29851E-6	-4.03055E-6	-5.58493E-5
ω	1.96940E-6	9.90647E-7	1.87295E-5	-4.03055E-6	7.09611E-6	9.78654E-5
M	2.73148E-5	1.37393E-5	2.59558E-4	-5.58493E-5	9.78654E-5	1.35762E-3

Date of computation: 2025-12-29 13:01 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

26.089

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

16 - 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

Unit

Source

[1]

Normalized RMS of residuals

Value

0.458311

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-12-17.218969

Unit

Source

[2]

Last Observation

Value

2025-12-29.12108

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

32 (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 2025YF4 from 1950 to 2126

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1964-12-25 14:40	> 1 d	0.0607194	0.0229014	0.0607049
EARTH	1987-01-26 17:00	> 1 mo	0.0947842	0.0178898	0.0924505
EARTH	2009-04-04 07:56	> 1 w	0.1486966	0.1280906	0.0415980
MARS	2014-08-06 03:21	> 1 d	0.0244600	0.0184221	0.0304364
EARTH	2026-01-03 22:38	< 1 min	0.0321685	0.0320689	0.0000332
EARTH	2042-12-19 20:06	> 1 d	0.1483475	0.0182081	0.0808563
EARTH	2065-03-20 05:39	> 1 w	0.1258706	0.1256381	0.0046704
EARTH	2082-01-14 07:05	> 1 mo	0.0683989	0.0161801	0.0956464
EARTH	2098-12-31 17:52	926.3	0.0289747	0.0275383	0.0015918
EARTH	2121-04-03 16:13	> 1 w	0.1355112	0.1263574	0.0314852

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
330.74117608	359.08720051	0.02612139	MINIMUM
182.34931200	221.77996272	0.90383685	SADDLE
2.64369615	222.82486517	1.94778168	SADDLE
180.49022231	40.45652144	2.89147114	MAXIMUM

Download:

MOID Plots

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